Eliza Simiz | University of Life Sciences "King Michael I" from Timisoara (original) (raw)

Papers by Eliza Simiz

Pastoral beekeeping imply carefully selection of the hive type because of the highcosts of this t... more Pastoral beekeeping imply carefully selection of the hive type because of the highcosts of this type of exploitation. The hives must be able to produce a high amount ofhoney to compensate with the production costs. In this paper we made a study forestablishing the necessary hive type to be used in pastoral beekeeping. Three hivetypes were used (horizontal, multileveled and vertical) during the linden andsunflower harvests. The study showed the utility of using the last hive type for thiskind of beekeeping.

Carrying out a research on a topic of this kind completes the missing elements from the literatur... more Carrying out a research on a topic of this kind completes the missing elements from the literature in Romania and also depicts the native Schneider population from the Nădrag River basin. The biological material aged 3-5 has been collected through an electric fishing device from the basin of the Nădrag River, a river from the Banat Hydrographical Space, Timis Hydrographical Basin. The number of collected individuals from the aquatic environment for the investigation was 60. After the collection, the biological material has been anesthetized with MS-222 for reducing stress induced by actions undergone within the working protocol. Any characteristic that regards the body development at Schneider females in the Nădrag River is directly proportional to the development of another characteristic. Thus one of the characters change, entails the change of other in the same direction. The most connections of Schneider females are positively connected with thresholds between p 0.05).

The aim of this paper was to analyze, within a group of 26 males from Romanian Mioritic Shepherd ... more The aim of this paper was to analyze, within a group of 26 males from Romanian Mioritic Shepherd Dog breed, 13 characters of genetically improved, characters stipulated in, „Selection sheet and body measurements for Romanian shepherds".The animals were registered with the Romanian Mioritic Association Club fromRomania. Romanian Mioritic Shepherd Dog, was selected from a natural population breed inCarpathian Mountains. In order to develop a genetic improvement program at this effective of 26 males from Romanian Sheperd Dog breed, found in evidence of Romanian Mioritic Association Club from Romania, should be considered the following conclusions on variance those 13 characters studied in this paper, respectively, the variability was middle for the width of skull and ear and low for the other 11 characters analyzed. Also, this paper highlighted the following reports of the characters analyzed at the males taken in the study: the ratio between the average of length and width skul...

The objective of this experiment was to determine the protocol of enzymatic products utilization ... more The objective of this experiment was to determine the protocol of enzymatic products utilization according to the wheat and barley proportion in the compound feed used in broilers. We used this experiment to analyze the anti-nutritional NSP’s effect of the wheat introduced in the compound feed in a proportion of 60 % and also of the compound feed including wheat in a proportion of 30 % and barley in a proportion of 30 %, on the digestive indices in broilers. To these, we added the variants with introduction of xylanase, in an amount of 100 ppm, and to counteract the anti-nutritional effect of the wheat and barley-based NSP, we introduced 50 ppm xylanase and 50 ppm beta glucanase. We also determined the coefficients of correlation between the digestive coefficient values (intestinal viscosity) and the soluble, insoluble and total NSP contents. The introduction of the wheat-specific enzyme in compound feed in a proportion of 60 % (LE3) or 30 % wheat and 30 % barley (LE5) determine vis...

The objective of this experiment was to assess the effect exerted by different levels and categor... more The objective of this experiment was to assess the effect exerted by different levels and categories of non-starch polysaccharides (NSP) from wheat grains on viscosity in broilers. Wheat's percentage of participation in the forage mixture was between 0 and 40 %. The experiment was performed during 6 weeks, on 120 broilers distributed in four experimental variants (CG, EG1, EG2, and EG3). Between eclosion and 3-week old, the content in soluble non-starch polysaccharides (NSPs) increases directly proportional with the wheat proportion in the structure of the forage mixture, becoming 0.718 percentage points bigger in EG3 than in the EG1. During the second period of growth, respectively from 3 to 6 weeks, the NSPs content has the same evolution, with 0.7 percentage points in EG3. At the age of 3 weeks, viscosity increases with the increase of wheat percentage in the structure of the combined forage, being 53.07 % bigger in the group that was fed on the 40%-wheat forage. At 6 weeks, ...

Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mounta... more Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mountains. The aim of this paper was to estimate variance at 12 body measurements using 26 males from Romanian Mioritic Shepherd Dog breed. The animals were registered with the Romanian Mioritic Association Club from Romania. The statistical data showed that there is a large variance for body length and tail length, a middle variance for the croup width and thorax width and a small variance for height at withers, height at middle of back, height at croup, height at the base of the tail, depth of thorax, thoracic perimeter, elbow height and height of the hock. We recommend of breeders dogs from this breed to take account in genetic improvement programs, of values presented in this paper.

The study of the main body mass indices in the Giant German Lop breed was performed between 6.06.... more The study of the main body mass indices in the Giant German Lop breed was performed between 6.06.2014 and 10.06.2014 in a rabbitry from Diniaș town, Timiș County. The biological material was represented by 16 adult rabbit females and 10 adult males, with the average body weight of 7 kg, raised in semi-intensive system. There have been performed the following body measurements: oblique and horizontal length of the trunk, the length of thorax, the length of head, the length of ears, of neck, and of tail, the height at withers and rump, the height of thorax and stern, the width of chest, of thorax, of rump at hip and ischia, the wide width of forehead, the thoracic circumference and the circumference of shin. Giant German Lop males have registered higher values in the body size index, in the pelvic-thoracic index, and in the rump angle index compared to females from the same breed, which have registered higher values in the index of transverse body size, in the index of massiveness, in...

Insects

The quantity and quality of the honey bee drone semen have a significant determination on the per... more The quantity and quality of the honey bee drone semen have a significant determination on the performance of bee colonies. The existence of a smaller number of mature drones to participate in the mating of queens, as well as a sufficient number of drones but with poor quality semen can have serious implications for the productivity of bee colonies. Our study aimed to investigate the correlation between two body weight ranges of drones and semen parameters in the Buckfast honey bee, data that could be integrated into the optimization of instrumental insemination in been queens. Semen was collected from two groups of drones with different body weights (200–240 mg and 240–280 mg). Semen volume, semen concentration, motility, morphology and membrane integrity of spermatozoa were analyzed. The phenotype indicator related to body weight in correlation with the main semen parameters studied gives a weak influence or causality ratio. In drones with 240–280 mg body weight, a higher percentag...

Agriculture

The aim of the study was to investigate the impact of lameness on nitrogen (N) metabolism and exc... more The aim of the study was to investigate the impact of lameness on nitrogen (N) metabolism and excretion. Two treatment groups of 20 multiparous Holstein–Friesian dairy cows were included in study; the control group consisted of cows with locomotion score ≤2, while the experimental group consisted of cows with locomotion scores 3 and 4. Fodder, milk, feces, and urine were collected to determine nitrogen emissions. The milk yield, the energy-corrected milk, the fat and protein yield were higher for lame animals compare with non-lame cows. Differences were also detected in the milk urea nitrogen (MUN) between groups where lame cows had a 15% lower MUN than non-lame animals. Urine volume was lower (p < 0.008), while urinary creatinine concentration was higher (p < 0.05) in lame animals compare with those in the non-lame group. Consequently, the creatinine/urea ratio was significantly higher (p < 0.001) in the lame vs. no-lame animals. Nitrogen excretion in milk was higher (p = ...

DOAJ: Directory of Open Access Journals - DOAJ, Oct 1, 2021

Molecules

Honey is a natural product with multiple health benefits. The paper presents the chemical charact... more Honey is a natural product with multiple health benefits. The paper presents the chemical characterization and the antioxidant and antimicrobial potential of ten types of honey (knotweed, linden, wild cherry, acacia, honeydew, oilseed rape, sunflower, phacelia, plain polyflora and hill polyflora) from the Banat region, Romania. We studied the water content, dry matter, impurities, acidity and pH of honey. We also determined the content of reducing sugar, minerals and flavonoids and the total phenolic content. All honey samples analysed showed good nutritional characteristics according to the standard codex for honey. From the analysis of the mineral content of the honey samples, we observed a variability in the macro and microminerals, influenced by the botanical origin, ranging between 0.25% (wild cherry honey) and 0.54% (honeydew). The toxic metals’ (Cd and Pb) levels met the standard for almost all samples analysed except for knotweed. The flavonoid content of the samples ranged ...

This paper shows a bio-economic analysis model in Tetra H hybrid, raised in organic system, in li... more This paper shows a bio-economic analysis model in Tetra H hybrid, raised in organic system, in line with the protein intake and of the body weight registered during the experimental period. The mathematic model y=a/(l+bx+cx2) allows the assessment of the expenses recorded with chicken feeding depending on crude protein intake. The model also validates the possibility to simplify the chickens' nutrition technology (starting from a triphase fodder feeding to a diphase fodder feeding) and at nutritional (protein) levels adapted to the desired body weight. The indices of correlation between the expenses registered with fodder feeding and crude protein intake show us that between them there is a strongly positive correlation, thus: 0.958 (in Tl), 0.980 (in T2) and 0.972 (in T3). The indices of determination (R2) corresponding to the three experimental variants are higher, with values over 0.963, and the error percentage of the mathematical model is reduced (below 6%). Based on the re...

The purpose of this paper was to assess the possibility of grow mixed breed broilers in free rang... more The purpose of this paper was to assess the possibility of grow mixed breed broilers in free range system fed according to the slow feeding rate, with nutritional requirements mainly consisting of feed concentrate mixtures starting from the premises that currently there are no nutritional standards especially created for maintenance alternative systems. The experiment for the quantification of impact of nutritional features and of the CM administration intake on bio productive and economic performances of Barred Plymouth Rock avian youth has been reared during 10 weeks on two experimental variants. The elaborated experimental design was intended to assess the effect of a good nutritional start in both variants, but with a different time. Considering the same start, both in Vi and V2, by administering an CM with 2960 kcal ME and 22.04% CP, for 14 days in V| and 21 days in V2.Vi received a tri-phase feeding by using an intermediary „growing" phase during 36 days when CM was admin...

Each amino acid has a specific function, and the number and type of the amino acids included with... more Each amino acid has a specific function, and the number and type of the amino acids included within the protein structure, beside their way of grouping, determine the so-called protein specificity. In this sense, these researches have been carried out in the Poultry Sector from the, BUASVM Timisoara, during 2005-2006, in permanent bedding shed. The researches concerning the study of synthetic amino acid optimization within laying hens food were performed on 269"Shaver 579" hens' hybrid. In the ascendant part of the laying curve, there were being observed 69 laying hens, shared in 3 lots. The experiment used 3 different fodder recipes, with the afferent protein levels, situated at 17%, 16% and respectively 15%. Methionine (0.38%) and lysine (0.80%) levels were maintained as NRC (1994) requirements by supplying with different percents of synthesis amino acids. The egg production weight produced by the hens fed with the recipe with 16% BP, 0.81% lysine and 0.38% methionine has recorded an insignificant increase (p>0.05) compared to the egg production weight produced by the hens from the other groups (with 17 and respectively 15% BP). In the plateau phase, there were used 4 experimental lots by 25-hens/group. Among the experimental period (8 weeks) the poultries age was between 32 and 39 weeks. The used combined fodders contained different levels for protein (16.2%-group 1, respectively 15.2%-groups 2, 3 and 4), and for amino acids as follows: group 1 and 2-0.75% lysine and 0.38% methionine; group 3a decreased amino acids contain 0.70% lysine and 0.34% methionine; group 4-an increased amino acids contain 0.82% lysine and 0.42% methionine. The highest egg-mass production (50.07 g) was registered in group 4, where the diet contained a lower protein percent (15.2%), but the lysine was 0.82% and the methionine 0.42%. On the other side, the lowest egg-mass production (44.14 g) was obtained in lot 3, where the administrated fodder contains only 0.70% lysine and 0.34% methionine. Obvisiously the statistical differences were significant (p<0.001). The highest egg production weight was recorded in group 1 (41.14 g), whose combined fodder had a content of 14.9% BP, 0.70% lysine and 0.32% methionine. The lower egg production weight (39.41 g) was recorded in group 4, too, which was fed with a methionine-deficient fodder. In this phase, we do not recommend a supplementation with amino acids for the combined fodder.

Scientific Papers Animal Science and Biotechnologies, 2020

Egg production is an excellent solution to the acute shortage of animal protein. Despite its abil... more Egg production is an excellent solution to the acute shortage of animal protein. Despite its ability to be stored for several days at room temperature, eggs are an extremely perishable foodstuff whose optimal conservation standards must be mastered. The present study was carried out with the aim of evaluating the effect of storage time at low temperature on the physico-chemical characteristics of eggs from hens kept in backyard systems in the city of Iasi in Romania. For this purpose, 180 hen eggs were purchased on the local market. Once in the laboratory, the eggs were cleaned, marked and then stored in the refrigerator at a temperature of approximately 5ºC. The next day and every 7 days after, external characteristics (weight, measurements, shape indexes, volume and density) of all the eggs were evaluated and 60 eggs were then used for the analysis of internal characteristics (yolk and albumen indexes, Haugh unit, proportion of white, yolk, shell, edible parts...) and chemical cha...

Scientific Papers Animal Science and Biotechnologies, 2020

Medicinal plants are used in poultry feed due to their beneficial effects on the intestinal micro... more Medicinal plants are used in poultry feed due to their beneficial effects on the intestinal microflora, digestibility of nutrients, intestinal morphology, aspects that are found in the quality of meat and eggs. Currently, due to its characteristics, coriander is widely used in the food, pharmaceutical and medical industry, in the cosmetics and perfume industry, but also in the zootechnical field, as an alternative to antibiotics, in raising young animals and birds. In this context, the aim of this study was to evaluate the additional effects of the diet of chickens with coriander powder on intestinal and liver morphology. The study was performed on a number of 24 broilers (ROS 308 hybrids), male, divided into two groups, each group with two replications, 6 individuals / group: Control group (CG) fed only by the basic diet and the experimental group (CoG) in which the basic diet was supplemented with 1% coriander powder. The duration of the experiment was 42 days. Supplementation of ...

The aim of this paper was to analyze, within a group of 21 females from Romanian Mioritic Shepher... more The aim of this paper was to analyze, within a group of 21 females from Romanian Mioritic Shepherd Dog breed, 13 characters of genetically improved, characters stipulated in „Selection sheet and body measurements for Romanian shepherds". The animals were registered with the Romanian Mioritic Association Club from Romania. Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mountains. Following the analysis for the mean value and dispersion indices for those 13 body measurement was realized a better knowledge of the genetic structure of the population for these characters and was created the possibility of estimating sexual dimorphism. Also, this paper highlighted the following reports of the characters analyzed at the males taken in the study: the ratio between the average of length and width skull was 1.00:1.02 the ratio between the average of length skull and the average of length muzzle was 1.36:1.00 and between average of the width...

The aim of this work was to investigate the calcium and magnesium tissue distribution in selected... more The aim of this work was to investigate the calcium and magnesium tissue distribution in selected organs of Prussian carp specimens before and after experimental lead intoxication, with and without cilantro and spirulina powder addition in fish diet. The study involved 120 individuals with similar biometric measurements, caught from a local fish farm and equally divided in four experimental groups, as follows: C group (without treatment), E1 group (75 ppm Pb into water as Pb(NO 3 ) 2 x ½H 2 O), E2 group (75 ppm Pb into water+2% lyophilized cilantro in feed), E3 group (75 ppm Pb into water+2% lyophilized spirulina in feed). Tissue samples (gills, muscle myotomers–epaxial, heart, skin and scales, intestine, liver, brain, gonads, kidney) were collected at the end of a 21 days experimental period. Atomic absorption measurements of the analytes were carried out with a AAS-VARIAN model. Data analyses were performed using a SPPS IBM 22 software package. Significance of differences in the m...

Pastoral beekeeping imply carefully selection of the hive type because of the highcosts of this t... more Pastoral beekeeping imply carefully selection of the hive type because of the highcosts of this type of exploitation. The hives must be able to produce a high amount ofhoney to compensate with the production costs. In this paper we made a study forestablishing the necessary hive type to be used in pastoral beekeeping. Three hivetypes were used (horizontal, multileveled and vertical) during the linden andsunflower harvests. The study showed the utility of using the last hive type for thiskind of beekeeping.

Carrying out a research on a topic of this kind completes the missing elements from the literatur... more Carrying out a research on a topic of this kind completes the missing elements from the literature in Romania and also depicts the native Schneider population from the Nădrag River basin. The biological material aged 3-5 has been collected through an electric fishing device from the basin of the Nădrag River, a river from the Banat Hydrographical Space, Timis Hydrographical Basin. The number of collected individuals from the aquatic environment for the investigation was 60. After the collection, the biological material has been anesthetized with MS-222 for reducing stress induced by actions undergone within the working protocol. Any characteristic that regards the body development at Schneider females in the Nădrag River is directly proportional to the development of another characteristic. Thus one of the characters change, entails the change of other in the same direction. The most connections of Schneider females are positively connected with thresholds between p 0.05).

The aim of this paper was to analyze, within a group of 26 males from Romanian Mioritic Shepherd ... more The aim of this paper was to analyze, within a group of 26 males from Romanian Mioritic Shepherd Dog breed, 13 characters of genetically improved, characters stipulated in, „Selection sheet and body measurements for Romanian shepherds".The animals were registered with the Romanian Mioritic Association Club fromRomania. Romanian Mioritic Shepherd Dog, was selected from a natural population breed inCarpathian Mountains. In order to develop a genetic improvement program at this effective of 26 males from Romanian Sheperd Dog breed, found in evidence of Romanian Mioritic Association Club from Romania, should be considered the following conclusions on variance those 13 characters studied in this paper, respectively, the variability was middle for the width of skull and ear and low for the other 11 characters analyzed. Also, this paper highlighted the following reports of the characters analyzed at the males taken in the study: the ratio between the average of length and width skul...

The objective of this experiment was to determine the protocol of enzymatic products utilization ... more The objective of this experiment was to determine the protocol of enzymatic products utilization according to the wheat and barley proportion in the compound feed used in broilers. We used this experiment to analyze the anti-nutritional NSP’s effect of the wheat introduced in the compound feed in a proportion of 60 % and also of the compound feed including wheat in a proportion of 30 % and barley in a proportion of 30 %, on the digestive indices in broilers. To these, we added the variants with introduction of xylanase, in an amount of 100 ppm, and to counteract the anti-nutritional effect of the wheat and barley-based NSP, we introduced 50 ppm xylanase and 50 ppm beta glucanase. We also determined the coefficients of correlation between the digestive coefficient values (intestinal viscosity) and the soluble, insoluble and total NSP contents. The introduction of the wheat-specific enzyme in compound feed in a proportion of 60 % (LE3) or 30 % wheat and 30 % barley (LE5) determine vis...

The objective of this experiment was to assess the effect exerted by different levels and categor... more The objective of this experiment was to assess the effect exerted by different levels and categories of non-starch polysaccharides (NSP) from wheat grains on viscosity in broilers. Wheat's percentage of participation in the forage mixture was between 0 and 40 %. The experiment was performed during 6 weeks, on 120 broilers distributed in four experimental variants (CG, EG1, EG2, and EG3). Between eclosion and 3-week old, the content in soluble non-starch polysaccharides (NSPs) increases directly proportional with the wheat proportion in the structure of the forage mixture, becoming 0.718 percentage points bigger in EG3 than in the EG1. During the second period of growth, respectively from 3 to 6 weeks, the NSPs content has the same evolution, with 0.7 percentage points in EG3. At the age of 3 weeks, viscosity increases with the increase of wheat percentage in the structure of the combined forage, being 53.07 % bigger in the group that was fed on the 40%-wheat forage. At 6 weeks, ...

Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mounta... more Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mountains. The aim of this paper was to estimate variance at 12 body measurements using 26 males from Romanian Mioritic Shepherd Dog breed. The animals were registered with the Romanian Mioritic Association Club from Romania. The statistical data showed that there is a large variance for body length and tail length, a middle variance for the croup width and thorax width and a small variance for height at withers, height at middle of back, height at croup, height at the base of the tail, depth of thorax, thoracic perimeter, elbow height and height of the hock. We recommend of breeders dogs from this breed to take account in genetic improvement programs, of values presented in this paper.

The study of the main body mass indices in the Giant German Lop breed was performed between 6.06.... more The study of the main body mass indices in the Giant German Lop breed was performed between 6.06.2014 and 10.06.2014 in a rabbitry from Diniaș town, Timiș County. The biological material was represented by 16 adult rabbit females and 10 adult males, with the average body weight of 7 kg, raised in semi-intensive system. There have been performed the following body measurements: oblique and horizontal length of the trunk, the length of thorax, the length of head, the length of ears, of neck, and of tail, the height at withers and rump, the height of thorax and stern, the width of chest, of thorax, of rump at hip and ischia, the wide width of forehead, the thoracic circumference and the circumference of shin. Giant German Lop males have registered higher values in the body size index, in the pelvic-thoracic index, and in the rump angle index compared to females from the same breed, which have registered higher values in the index of transverse body size, in the index of massiveness, in...

Insects

The quantity and quality of the honey bee drone semen have a significant determination on the per... more The quantity and quality of the honey bee drone semen have a significant determination on the performance of bee colonies. The existence of a smaller number of mature drones to participate in the mating of queens, as well as a sufficient number of drones but with poor quality semen can have serious implications for the productivity of bee colonies. Our study aimed to investigate the correlation between two body weight ranges of drones and semen parameters in the Buckfast honey bee, data that could be integrated into the optimization of instrumental insemination in been queens. Semen was collected from two groups of drones with different body weights (200–240 mg and 240–280 mg). Semen volume, semen concentration, motility, morphology and membrane integrity of spermatozoa were analyzed. The phenotype indicator related to body weight in correlation with the main semen parameters studied gives a weak influence or causality ratio. In drones with 240–280 mg body weight, a higher percentag...

Agriculture

The aim of the study was to investigate the impact of lameness on nitrogen (N) metabolism and exc... more The aim of the study was to investigate the impact of lameness on nitrogen (N) metabolism and excretion. Two treatment groups of 20 multiparous Holstein–Friesian dairy cows were included in study; the control group consisted of cows with locomotion score ≤2, while the experimental group consisted of cows with locomotion scores 3 and 4. Fodder, milk, feces, and urine were collected to determine nitrogen emissions. The milk yield, the energy-corrected milk, the fat and protein yield were higher for lame animals compare with non-lame cows. Differences were also detected in the milk urea nitrogen (MUN) between groups where lame cows had a 15% lower MUN than non-lame animals. Urine volume was lower (p < 0.008), while urinary creatinine concentration was higher (p < 0.05) in lame animals compare with those in the non-lame group. Consequently, the creatinine/urea ratio was significantly higher (p < 0.001) in the lame vs. no-lame animals. Nitrogen excretion in milk was higher (p = ...

DOAJ: Directory of Open Access Journals - DOAJ, Oct 1, 2021

Molecules

Honey is a natural product with multiple health benefits. The paper presents the chemical charact... more Honey is a natural product with multiple health benefits. The paper presents the chemical characterization and the antioxidant and antimicrobial potential of ten types of honey (knotweed, linden, wild cherry, acacia, honeydew, oilseed rape, sunflower, phacelia, plain polyflora and hill polyflora) from the Banat region, Romania. We studied the water content, dry matter, impurities, acidity and pH of honey. We also determined the content of reducing sugar, minerals and flavonoids and the total phenolic content. All honey samples analysed showed good nutritional characteristics according to the standard codex for honey. From the analysis of the mineral content of the honey samples, we observed a variability in the macro and microminerals, influenced by the botanical origin, ranging between 0.25% (wild cherry honey) and 0.54% (honeydew). The toxic metals’ (Cd and Pb) levels met the standard for almost all samples analysed except for knotweed. The flavonoid content of the samples ranged ...

This paper shows a bio-economic analysis model in Tetra H hybrid, raised in organic system, in li... more This paper shows a bio-economic analysis model in Tetra H hybrid, raised in organic system, in line with the protein intake and of the body weight registered during the experimental period. The mathematic model y=a/(l+bx+cx2) allows the assessment of the expenses recorded with chicken feeding depending on crude protein intake. The model also validates the possibility to simplify the chickens' nutrition technology (starting from a triphase fodder feeding to a diphase fodder feeding) and at nutritional (protein) levels adapted to the desired body weight. The indices of correlation between the expenses registered with fodder feeding and crude protein intake show us that between them there is a strongly positive correlation, thus: 0.958 (in Tl), 0.980 (in T2) and 0.972 (in T3). The indices of determination (R2) corresponding to the three experimental variants are higher, with values over 0.963, and the error percentage of the mathematical model is reduced (below 6%). Based on the re...

The purpose of this paper was to assess the possibility of grow mixed breed broilers in free rang... more The purpose of this paper was to assess the possibility of grow mixed breed broilers in free range system fed according to the slow feeding rate, with nutritional requirements mainly consisting of feed concentrate mixtures starting from the premises that currently there are no nutritional standards especially created for maintenance alternative systems. The experiment for the quantification of impact of nutritional features and of the CM administration intake on bio productive and economic performances of Barred Plymouth Rock avian youth has been reared during 10 weeks on two experimental variants. The elaborated experimental design was intended to assess the effect of a good nutritional start in both variants, but with a different time. Considering the same start, both in Vi and V2, by administering an CM with 2960 kcal ME and 22.04% CP, for 14 days in V| and 21 days in V2.Vi received a tri-phase feeding by using an intermediary „growing" phase during 36 days when CM was admin...

Each amino acid has a specific function, and the number and type of the amino acids included with... more Each amino acid has a specific function, and the number and type of the amino acids included within the protein structure, beside their way of grouping, determine the so-called protein specificity. In this sense, these researches have been carried out in the Poultry Sector from the, BUASVM Timisoara, during 2005-2006, in permanent bedding shed. The researches concerning the study of synthetic amino acid optimization within laying hens food were performed on 269"Shaver 579" hens' hybrid. In the ascendant part of the laying curve, there were being observed 69 laying hens, shared in 3 lots. The experiment used 3 different fodder recipes, with the afferent protein levels, situated at 17%, 16% and respectively 15%. Methionine (0.38%) and lysine (0.80%) levels were maintained as NRC (1994) requirements by supplying with different percents of synthesis amino acids. The egg production weight produced by the hens fed with the recipe with 16% BP, 0.81% lysine and 0.38% methionine has recorded an insignificant increase (p>0.05) compared to the egg production weight produced by the hens from the other groups (with 17 and respectively 15% BP). In the plateau phase, there were used 4 experimental lots by 25-hens/group. Among the experimental period (8 weeks) the poultries age was between 32 and 39 weeks. The used combined fodders contained different levels for protein (16.2%-group 1, respectively 15.2%-groups 2, 3 and 4), and for amino acids as follows: group 1 and 2-0.75% lysine and 0.38% methionine; group 3a decreased amino acids contain 0.70% lysine and 0.34% methionine; group 4-an increased amino acids contain 0.82% lysine and 0.42% methionine. The highest egg-mass production (50.07 g) was registered in group 4, where the diet contained a lower protein percent (15.2%), but the lysine was 0.82% and the methionine 0.42%. On the other side, the lowest egg-mass production (44.14 g) was obtained in lot 3, where the administrated fodder contains only 0.70% lysine and 0.34% methionine. Obvisiously the statistical differences were significant (p<0.001). The highest egg production weight was recorded in group 1 (41.14 g), whose combined fodder had a content of 14.9% BP, 0.70% lysine and 0.32% methionine. The lower egg production weight (39.41 g) was recorded in group 4, too, which was fed with a methionine-deficient fodder. In this phase, we do not recommend a supplementation with amino acids for the combined fodder.

Scientific Papers Animal Science and Biotechnologies, 2020

Egg production is an excellent solution to the acute shortage of animal protein. Despite its abil... more Egg production is an excellent solution to the acute shortage of animal protein. Despite its ability to be stored for several days at room temperature, eggs are an extremely perishable foodstuff whose optimal conservation standards must be mastered. The present study was carried out with the aim of evaluating the effect of storage time at low temperature on the physico-chemical characteristics of eggs from hens kept in backyard systems in the city of Iasi in Romania. For this purpose, 180 hen eggs were purchased on the local market. Once in the laboratory, the eggs were cleaned, marked and then stored in the refrigerator at a temperature of approximately 5ºC. The next day and every 7 days after, external characteristics (weight, measurements, shape indexes, volume and density) of all the eggs were evaluated and 60 eggs were then used for the analysis of internal characteristics (yolk and albumen indexes, Haugh unit, proportion of white, yolk, shell, edible parts...) and chemical cha...

Scientific Papers Animal Science and Biotechnologies, 2020

Medicinal plants are used in poultry feed due to their beneficial effects on the intestinal micro... more Medicinal plants are used in poultry feed due to their beneficial effects on the intestinal microflora, digestibility of nutrients, intestinal morphology, aspects that are found in the quality of meat and eggs. Currently, due to its characteristics, coriander is widely used in the food, pharmaceutical and medical industry, in the cosmetics and perfume industry, but also in the zootechnical field, as an alternative to antibiotics, in raising young animals and birds. In this context, the aim of this study was to evaluate the additional effects of the diet of chickens with coriander powder on intestinal and liver morphology. The study was performed on a number of 24 broilers (ROS 308 hybrids), male, divided into two groups, each group with two replications, 6 individuals / group: Control group (CG) fed only by the basic diet and the experimental group (CoG) in which the basic diet was supplemented with 1% coriander powder. The duration of the experiment was 42 days. Supplementation of ...

The aim of this paper was to analyze, within a group of 21 females from Romanian Mioritic Shepher... more The aim of this paper was to analyze, within a group of 21 females from Romanian Mioritic Shepherd Dog breed, 13 characters of genetically improved, characters stipulated in „Selection sheet and body measurements for Romanian shepherds". The animals were registered with the Romanian Mioritic Association Club from Romania. Romanian Mioritic Shepherd Dog, was selected from a natural population breed in Carpathian Mountains. Following the analysis for the mean value and dispersion indices for those 13 body measurement was realized a better knowledge of the genetic structure of the population for these characters and was created the possibility of estimating sexual dimorphism. Also, this paper highlighted the following reports of the characters analyzed at the males taken in the study: the ratio between the average of length and width skull was 1.00:1.02 the ratio between the average of length skull and the average of length muzzle was 1.36:1.00 and between average of the width...

The aim of this work was to investigate the calcium and magnesium tissue distribution in selected... more The aim of this work was to investigate the calcium and magnesium tissue distribution in selected organs of Prussian carp specimens before and after experimental lead intoxication, with and without cilantro and spirulina powder addition in fish diet. The study involved 120 individuals with similar biometric measurements, caught from a local fish farm and equally divided in four experimental groups, as follows: C group (without treatment), E1 group (75 ppm Pb into water as Pb(NO 3 ) 2 x ½H 2 O), E2 group (75 ppm Pb into water+2% lyophilized cilantro in feed), E3 group (75 ppm Pb into water+2% lyophilized spirulina in feed). Tissue samples (gills, muscle myotomers–epaxial, heart, skin and scales, intestine, liver, brain, gonads, kidney) were collected at the end of a 21 days experimental period. Atomic absorption measurements of the analytes were carried out with a AAS-VARIAN model. Data analyses were performed using a SPPS IBM 22 software package. Significance of differences in the m...