Ioana Andronie | Spiru Haret University (Bucharest) (original) (raw)

Papers by Ioana Andronie

isah-soc.org

In Romania there is a poultry breed raised in the hill region of Transylvania which has a better ... more In Romania there is a poultry breed raised in the hill region of Transylvania which has a better thermolysis than other breeds because its body plumage is up to 30% less than the normal one. The study presents the adaptive capacity to heat stress specific to this breed by analysing the growth performance of chicks and some physiological indicators.

Scientific Works - University of Agronomical Sciences and Veterinary Medicine, Bucharest. Series C, Veterinary Medicine, 2009

EPC 2006 - 12th European Poultry Conference, Verona, Italy, 10-14 September, 2006, 2006

Under stress-conditions the decomposition of ascorbic acid increases, as was shown by the applica... more Under stress-conditions the decomposition of ascorbic acid increases, as was shown by the application of 14 C-ascorbic acid. There is an increased consumption especially in the leukocytes and the liver. The byosinthesis in stress conditions is not augmented to the necessary degree, so the concentration of ascorbic acid in the plasma is lowered. The administration of ascorbic acid increases the concentration in the plasma and the uptake into the adrenal cortex, into the cells of the immune system and into other cell types.The literature points out that addition of ascorbic acid to the feed of poultry has positive effects, such as increased weight gain, higher resistance to some infections and contagious diseases, more suitable eggshell thickness, better summer egg quality etc. The experiments were conducted with meat chickens, 10 days old, whose feed rations were supplemented with 2 g of ascorbic acid / kg of combined feed, along with another lot receiving 2 g of sodium ascorbate/kg of combined feed, while a third lot received unsupplemented feed. The surrounding temperature was 28-32 0 C, compared to 26-22 0 C, the normal temperature for this age group. After four weeks, blood samples were taken by puncture of the cubital vein and hematologic and biochemical investigations were conducted, as well as dosing of ascorbic acid in tissues and organs. The data were processed biostatistically and plotted by a PC 386 Sx calculation system, using the Lotus R-23 program packet. The significance of difference (t) was then determined. After four weeks supplemented feeding with 2 g of ascorbic acid / kg of combined feed, the average weight of meat chickens was 1035.41 g against only 866.50 g in the controls, hence 19.49% greater. The hematologic and biochemical findings included a drop in the hematocrit (P<0.05) and in the amount of ascorbic acid contained in the bursa of Fabricius (P < 0.01). In the lot supplemented with 2 g of sodium ascorbate / kg of combined feed, after 4 weeks, the average weight was 977.00 g against only 866.50 g in the control, hence an increase of 12,75%. The hematologic an biochemical findings included a rise in the SO 4 Zn turbidity test values (P<0.05), ascorbinemia (P<0.01) and the content of ascorbic acid in the kidneys (P<0.05), liver (P<0.05), and the bursa of Fabricius (P<0.05).

Lucrări Ştiinţifice - Zootehnie şi Biotehnologii, Universitatea de Ştiinţe Agricole şi Medicină Veterinară a Banatului Timişoara, Oct 31, 2009

The study was conducted on bee families of Apis mellifera carpatica and Apis mellifera ligustica ... more The study was conducted on bee families of Apis mellifera carpatica and Apis mellifera ligustica breeds. The bees were housed in multi-storey hives. The experimental period was of 6 months. The resistance to wintering was evaluated on the basis of several apicultural indicators: mortality, feed intake during the winter, general state of the family. Mortality was 35% during wintering for the Carpathian bee and 52% for the Italian bee. The differences were very significant (p≤0.001). When wintering finished all bee families were in good strength. The general state of the bee family was as follows: the Carpathian bee had a strong family when wintering started and ended with a median power; it had a large number of young bees and sufficient reserves; no diarrhoea or mould were noticed; relative humidity was 74%. The Italian bee had a strong family when wintering started and ended with half of the power because of the high mortality during the winter; no diarrhoea or mould were noticed; relative humidity was 69%.

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine, Nov 21, 2008

Research has monitored the manner under which growing conditions in the pig shelters may influenc... more Research has monitored the manner under which growing conditions in the pig shelters may influence the behavioural and productivity indicators as mean s of assessing fattening pigs' welfare. We simultaneously monitored the evolution of factor s such as microclimate; animal behaviour and productivity in two different farming systems. We r ecorded the animal body weight at the beginning of their fattening period (28-29;5kg) and at its end (104;6- 119kg). The growth varied and it was 12% lower in the shelter were we did not monitor the microclimate. The shelt er air temperature varied greatly over the study pe riod in the shelter where it could not be controlled and monito red (5-9 0 C); thus compelling the pigs to spend most of their time lying down (both in the cold and the hot seas on) in order to keep their homeostasis. All these aspects indicate that monitoring the micr oclimate factors and particularly the shelter air temperature is very important in the case of raisin g fattening pigs as great variations may influence productivity and behaviour; and inherently their welfare level.

Journal of Biotechnology, Aug 1, 2017

reared in organic farming, the quantity of milk increased slightly, while the somatic cell count ... more reared in organic farming, the quantity of milk increased slightly, while the somatic cell count and the quantity of fat, protein and lactose decreased. The increased microbiological load of milk was correlated simultaneously with the increased number of somatic cells in milk, but cannot be correlated with one specific rearing system. The other analyzed parameters showed normal variation, without particular attention.

The aim of the research was to monitor the growth process of the Limousin calves from birth to we... more The aim of the research was to monitor the growth process of the Limousin calves from birth to weaning (six months old). The research was performed on S.C.TAOS.S.R.L situated in Covasna. In this farm, the rearing of the calves was not made by a technological guide. The maintaining system was outdoor, during summer on pasture, and in the winter season, in free stabulation. The calves had been grown along with the mother cows, having free access to the paddock. The base of feeding was represented by semi-hay, corn silage, barley straw and cereals (barley, wheat and corn) and grazing is made on lowland meadow. The introduction of vegetal food into the calves ration is done at 3 weeks old. In the first period (first month old), the daily gain was 666.7 g at heifers and 800 g at calves. In the second period (from one month old until weaning), the daily gain was 1120 g at heifers and 1200 g at calves. The stress of weaning was present only to the young females; for ten days, these were restless, having the desire for sucking and the appetite for feed has decreased. Their bodyweight has decreased with 12%, the differences being significantly (p ≤ 0.05).

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2011

The purpose of researches was to develop a mathematical model to simulate the growth process in p... more The purpose of researches was to develop a mathematical model to simulate the growth process in piglets. The experiment was conducted on 53 Mangalitsa piglets, with initial weight (Wi) of 0.95 kg. The final weight was 30.7 kg. The piglets have been fed ad libitum with standard diets. Body weight, compound feed intake and feed conversion ratio were monitored throughout the experimental period. Housing environmental parameters were according to the growth technology. The feed samples were analyzed according the Weende scheme. The crude protein was determined by Tecator-Kyeltec Auto Analyze, the ether extract by Soxtec System HT and the brute cellulose by gravimetric method. The Gompertz-type functions were used for the mathematical modelling of the growth process. Gompertz function is a type of mathematical model for a time series, with sigmoid appearance. The weight evolution was evaluated from the initial weight (Wi). Based on data on the evolution of body weight was made a mathematical model that allows estimation of growth in standard conditions of maintenance.

Scientific Works - University of Agronomical Sciences and Veterinary Medicine, Bucharest. Series C, Veterinary Medicine, 2009

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2006

The change of body composition, energy content and energy and protein balance was studied in Rhod... more The change of body composition, energy content and energy and protein balance was studied in Rhode Island pullets from hatching to 140 days of age. The animals received standard diets ensuring maximal growth. Correlations were established between ingested feed and body weight gain both from the point of view of quantity and quality, determining the content of protein, fat, ash, water and energy in the total body and in feathers, separately. On the basis of digestibility and comparative slaughtering the energy and protein requirements for maintenance and for protein and fat retention were calculated. The obtained results can be utilised to develop a mathematical model for energy and protein retention in growing Rhode Island pullets.

In our country the beef cattle rearing is considered to be a sustainable and future activity. The... more In our country the beef cattle rearing is considered to be a sustainable and future activity. The study carried out how shelter conditions can influence the beef cattle welfare raised in a semi-intensive system. The research was carried out in two types of shelters, constructively different (A and B) used for fattening calves (n: 140). In assessing housing conditions, health status and animal behaviour, there were different values between the two lots, the animals welfare being affected. The percentage of dirty animals was high in B lot (18.3%) compared to A lot (8.7%), and the animal rest behaviour were higher in B lot (70%) than A lot (63.7%). The assessed health status was better in lot B than lot A. The use of a suitable bedding material and flooring for beef cattle can make a difference in welfare, health and productivity performance. Housing conditions that may affect animal welfare must be known by all breeders, being important from the point of view of investments and acquired production. Key words: animal welfare, beef cattle, housing conditions

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2000

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, Oct 17, 2010

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine, Nov 1, 2011

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2013

The aim was to clarify some aspects of the biological evolution of bee families under the influen... more The aim was to clarify some aspects of the biological evolution of bee families under the influence of environmental temperature and subsequent reporting of behavioural change. The experiment was conducted in a private apiary in Giurgiu County, during three years, in May and June. The biological material was represented by 14 strong colonies. The bees were maintained in vertical hives. The biological evolution of bees was analyzed in population growth period. Bee indicators were the following: egg-laying activities of the queen bee, honey bee flight activity, gentleness of bees, swarming behaviour. It was found out that by lowering the temperature with about 3°C, the number of eggs laid decreased by 11%, the differences being significant (p≤0.05). In rainy years, it has been a tendency of swarming, 41.7% of bee colonies showing this trend. The irritability of bees was significantly higher in periods of warm temperatures, this occurring in the early morning hours.

isah-soc.org

In Romania there is a poultry breed raised in the hill region of Transylvania which has a better ... more In Romania there is a poultry breed raised in the hill region of Transylvania which has a better thermolysis than other breeds because its body plumage is up to 30% less than the normal one. The study presents the adaptive capacity to heat stress specific to this breed by analysing the growth performance of chicks and some physiological indicators.

Scientific Works - University of Agronomical Sciences and Veterinary Medicine, Bucharest. Series C, Veterinary Medicine, 2009

EPC 2006 - 12th European Poultry Conference, Verona, Italy, 10-14 September, 2006, 2006

Under stress-conditions the decomposition of ascorbic acid increases, as was shown by the applica... more Under stress-conditions the decomposition of ascorbic acid increases, as was shown by the application of 14 C-ascorbic acid. There is an increased consumption especially in the leukocytes and the liver. The byosinthesis in stress conditions is not augmented to the necessary degree, so the concentration of ascorbic acid in the plasma is lowered. The administration of ascorbic acid increases the concentration in the plasma and the uptake into the adrenal cortex, into the cells of the immune system and into other cell types.The literature points out that addition of ascorbic acid to the feed of poultry has positive effects, such as increased weight gain, higher resistance to some infections and contagious diseases, more suitable eggshell thickness, better summer egg quality etc. The experiments were conducted with meat chickens, 10 days old, whose feed rations were supplemented with 2 g of ascorbic acid / kg of combined feed, along with another lot receiving 2 g of sodium ascorbate/kg of combined feed, while a third lot received unsupplemented feed. The surrounding temperature was 28-32 0 C, compared to 26-22 0 C, the normal temperature for this age group. After four weeks, blood samples were taken by puncture of the cubital vein and hematologic and biochemical investigations were conducted, as well as dosing of ascorbic acid in tissues and organs. The data were processed biostatistically and plotted by a PC 386 Sx calculation system, using the Lotus R-23 program packet. The significance of difference (t) was then determined. After four weeks supplemented feeding with 2 g of ascorbic acid / kg of combined feed, the average weight of meat chickens was 1035.41 g against only 866.50 g in the controls, hence 19.49% greater. The hematologic and biochemical findings included a drop in the hematocrit (P<0.05) and in the amount of ascorbic acid contained in the bursa of Fabricius (P < 0.01). In the lot supplemented with 2 g of sodium ascorbate / kg of combined feed, after 4 weeks, the average weight was 977.00 g against only 866.50 g in the control, hence an increase of 12,75%. The hematologic an biochemical findings included a rise in the SO 4 Zn turbidity test values (P<0.05), ascorbinemia (P<0.01) and the content of ascorbic acid in the kidneys (P<0.05), liver (P<0.05), and the bursa of Fabricius (P<0.05).

Lucrări Ştiinţifice - Zootehnie şi Biotehnologii, Universitatea de Ştiinţe Agricole şi Medicină Veterinară a Banatului Timişoara, Oct 31, 2009

The study was conducted on bee families of Apis mellifera carpatica and Apis mellifera ligustica ... more The study was conducted on bee families of Apis mellifera carpatica and Apis mellifera ligustica breeds. The bees were housed in multi-storey hives. The experimental period was of 6 months. The resistance to wintering was evaluated on the basis of several apicultural indicators: mortality, feed intake during the winter, general state of the family. Mortality was 35% during wintering for the Carpathian bee and 52% for the Italian bee. The differences were very significant (p≤0.001). When wintering finished all bee families were in good strength. The general state of the bee family was as follows: the Carpathian bee had a strong family when wintering started and ended with a median power; it had a large number of young bees and sufficient reserves; no diarrhoea or mould were noticed; relative humidity was 74%. The Italian bee had a strong family when wintering started and ended with half of the power because of the high mortality during the winter; no diarrhoea or mould were noticed; relative humidity was 69%.

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine, Nov 21, 2008

Research has monitored the manner under which growing conditions in the pig shelters may influenc... more Research has monitored the manner under which growing conditions in the pig shelters may influence the behavioural and productivity indicators as mean s of assessing fattening pigs' welfare. We simultaneously monitored the evolution of factor s such as microclimate; animal behaviour and productivity in two different farming systems. We r ecorded the animal body weight at the beginning of their fattening period (28-29;5kg) and at its end (104;6- 119kg). The growth varied and it was 12% lower in the shelter were we did not monitor the microclimate. The shelt er air temperature varied greatly over the study pe riod in the shelter where it could not be controlled and monito red (5-9 0 C); thus compelling the pigs to spend most of their time lying down (both in the cold and the hot seas on) in order to keep their homeostasis. All these aspects indicate that monitoring the micr oclimate factors and particularly the shelter air temperature is very important in the case of raisin g fattening pigs as great variations may influence productivity and behaviour; and inherently their welfare level.

Journal of Biotechnology, Aug 1, 2017

reared in organic farming, the quantity of milk increased slightly, while the somatic cell count ... more reared in organic farming, the quantity of milk increased slightly, while the somatic cell count and the quantity of fat, protein and lactose decreased. The increased microbiological load of milk was correlated simultaneously with the increased number of somatic cells in milk, but cannot be correlated with one specific rearing system. The other analyzed parameters showed normal variation, without particular attention.

The aim of the research was to monitor the growth process of the Limousin calves from birth to we... more The aim of the research was to monitor the growth process of the Limousin calves from birth to weaning (six months old). The research was performed on S.C.TAOS.S.R.L situated in Covasna. In this farm, the rearing of the calves was not made by a technological guide. The maintaining system was outdoor, during summer on pasture, and in the winter season, in free stabulation. The calves had been grown along with the mother cows, having free access to the paddock. The base of feeding was represented by semi-hay, corn silage, barley straw and cereals (barley, wheat and corn) and grazing is made on lowland meadow. The introduction of vegetal food into the calves ration is done at 3 weeks old. In the first period (first month old), the daily gain was 666.7 g at heifers and 800 g at calves. In the second period (from one month old until weaning), the daily gain was 1120 g at heifers and 1200 g at calves. The stress of weaning was present only to the young females; for ten days, these were restless, having the desire for sucking and the appetite for feed has decreased. Their bodyweight has decreased with 12%, the differences being significantly (p ≤ 0.05).

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2011

The purpose of researches was to develop a mathematical model to simulate the growth process in p... more The purpose of researches was to develop a mathematical model to simulate the growth process in piglets. The experiment was conducted on 53 Mangalitsa piglets, with initial weight (Wi) of 0.95 kg. The final weight was 30.7 kg. The piglets have been fed ad libitum with standard diets. Body weight, compound feed intake and feed conversion ratio were monitored throughout the experimental period. Housing environmental parameters were according to the growth technology. The feed samples were analyzed according the Weende scheme. The crude protein was determined by Tecator-Kyeltec Auto Analyze, the ether extract by Soxtec System HT and the brute cellulose by gravimetric method. The Gompertz-type functions were used for the mathematical modelling of the growth process. Gompertz function is a type of mathematical model for a time series, with sigmoid appearance. The weight evolution was evaluated from the initial weight (Wi). Based on data on the evolution of body weight was made a mathematical model that allows estimation of growth in standard conditions of maintenance.

Scientific Works - University of Agronomical Sciences and Veterinary Medicine, Bucharest. Series C, Veterinary Medicine, 2009

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2006

The change of body composition, energy content and energy and protein balance was studied in Rhod... more The change of body composition, energy content and energy and protein balance was studied in Rhode Island pullets from hatching to 140 days of age. The animals received standard diets ensuring maximal growth. Correlations were established between ingested feed and body weight gain both from the point of view of quantity and quality, determining the content of protein, fat, ash, water and energy in the total body and in feathers, separately. On the basis of digestibility and comparative slaughtering the energy and protein requirements for maintenance and for protein and fat retention were calculated. The obtained results can be utilised to develop a mathematical model for energy and protein retention in growing Rhode Island pullets.

In our country the beef cattle rearing is considered to be a sustainable and future activity. The... more In our country the beef cattle rearing is considered to be a sustainable and future activity. The study carried out how shelter conditions can influence the beef cattle welfare raised in a semi-intensive system. The research was carried out in two types of shelters, constructively different (A and B) used for fattening calves (n: 140). In assessing housing conditions, health status and animal behaviour, there were different values between the two lots, the animals welfare being affected. The percentage of dirty animals was high in B lot (18.3%) compared to A lot (8.7%), and the animal rest behaviour were higher in B lot (70%) than A lot (63.7%). The assessed health status was better in lot B than lot A. The use of a suitable bedding material and flooring for beef cattle can make a difference in welfare, health and productivity performance. Housing conditions that may affect animal welfare must be known by all breeders, being important from the point of view of investments and acquired production. Key words: animal welfare, beef cattle, housing conditions

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2000

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, Oct 17, 2010

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine, Nov 1, 2011

DOAJ (DOAJ: Directory of Open Access Journals), Oct 1, 2013

The aim was to clarify some aspects of the biological evolution of bee families under the influen... more The aim was to clarify some aspects of the biological evolution of bee families under the influence of environmental temperature and subsequent reporting of behavioural change. The experiment was conducted in a private apiary in Giurgiu County, during three years, in May and June. The biological material was represented by 14 strong colonies. The bees were maintained in vertical hives. The biological evolution of bees was analyzed in population growth period. Bee indicators were the following: egg-laying activities of the queen bee, honey bee flight activity, gentleness of bees, swarming behaviour. It was found out that by lowering the temperature with about 3°C, the number of eggs laid decreased by 11%, the differences being significant (p≤0.05). In rainy years, it has been a tendency of swarming, 41.7% of bee colonies showing this trend. The irritability of bees was significantly higher in periods of warm temperatures, this occurring in the early morning hours.