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Papers by bahareh dolatkhah

Journal of Animal and Poultry Sciences, 2014

An experiment was conducted to study the effects of different levels of exogenous enzymes on egg ... more An experiment was conducted to study the effects of different levels of exogenous enzymes on egg quality characteristics and immunological responses of laying hens fed diets containing different levels of safflower meal. The 47-week old layers (Hy-Line W-36) were fed 10 experimental diets consisting five levels of safflower meal (0.0, 2.5, 5.0, 7.5 and 10.0%) and two levels of dietary exogenous enzyme (0.0 and 0.1% Bergazym P) during the experimentation. The trial period lasted for a total of 10 weeks, and egg quality indices were measured as two 35 day experimental periods. After 48 and 55 days of experiment, birds were injected with 1 mL of 7% Sheep Red Blood Cells (SRBC) intramuscularly. At the end of experiment, the antibody titer against SRBC and differential circulating leukocyte count were measured for investigating immune status. Least squares mean analysis showed that although the inner egg quality characteristics (yolk index and Haugh unit) were not influenced by dietary t...

Journal of Dairy Science, 2020

The objective of this study was to investigate the effects of an enzymatically hydrolyzed cottons... more The objective of this study was to investigate the effects of an enzymatically hydrolyzed cottonseed protein (HCSP) as a peptide source on performance, blood metabolites, gastrointestinal development, and intestinal microbes. Forty-eight newborn Holstein calves were randomly assigned to 1 of the 4 dietary treatments including 0, 2, 4, and 6% of HCSP (dry matter basis). All calves received the same amount of pasteurized whole milk, weaned on d 56 of the experiment, and the study was concluded on d 70. Data were analyzed using PROC MIXED in SAS (SAS Institute Inc., Cary, NC) as a randomized complete block design with linear and quadratic contrasts. Results showed that increased amount of HCSP linearly decreased the starter intake during the postweaning (d 57 to 70) and overall period (d 1 to 70). In addition, when dietary HCSP increased during the overall period, average daily gain tended to linearly decrease. All skeletal growth variables also linearly decreased as dietary HCSP increased at the end of the study, except for body length, which did not differ among the treatments. Serum cortisol concentration was higher in calves supplemented with 6% of HCSP at weaning and at the end of the study. This indicates that these calves may have experienced a stressful condition compared with calves in other treatments. Total antioxidant capacity was quadratically affected by HCSP supplementation; calves fed 2 and 4% of HCSP diets had the highest total antioxidant capacity, whereas calves fed 0 and 6% HCSP diets had lower total antioxidant capacity at weaning and at end of the study. Calves supplemented with 6% HCSP had lower empty reticulo-rumen and omasum weights and rumen wall thickness compared with calves in other treatments at the end of the study. In conclusion, supplementation of HCSP at the rate of 2% of starter diet enhanced antioxidant status without any detrimental effects on the performance and metabolic status of calves, whereas greater inclusion rates impaired starter intake and growth of calves, and exposed them to a stressful status.

Journal of Animal and Poultry Sciences, 2013

The present study aimed to investigate the effects of dietary supplementation of multi-enzyme on ... more The present study aimed to investigate the effects of dietary supplementation of multi-enzyme on productive performance of laying hens fed different levels of safflower meal. A total of 250 Leghorn laying hens (Hy-Line W-36) 47 weeks-old were randomly assigned into 10 experimental treatments with 5 replicates of 5 birds each. Experimental treatments consisted of five safflower meal levels (0.0, 2.5, 5.0, 7.5 and 10.0 g/100g of diet) with and without multienzyme (Bergazym P®,0.0 and 0.1 g/100g of diet) as a 5 × 2 factorial arrangement that fed during a 10 weeks feeding trial. During the experimental period, eggs were collected and weighed daily, and feed consumption was weekly recorded. Then, the productive performance indices including feed consumption, egg production percentage, egg weight, egg mass and feed conversion ratio (FCR) were reported as 14 d intervals and during entire trial period. Feeding laying hens 2.5% and 5% safflower meal showed tendency to increased egg mass in t...

Annals of Biological Research, 2013

Endometritis is a prevalent uterine infection in postpartum dairy cows that causes some alteratio... more Endometritis is a prevalent uterine infection in postpartum dairy cows that causes some alterations in the endometrium. So, the aim of this study was to determine the comparative cellular and histological characteristics of uterus, especially neutrophils index and cell morphological alterations, in healthy and endometritic Holstein cows. Thirty non-pregnant cows were used. Based on uterine discharge score, they were grouped into healthy (nine) and endometritic (twenty one) cows. Uterine discharges were sampled at day 0 of oestrus cycle for studying cellular characteristics. At second day of cycle, larger horn of uteri were sampled for histological investigations. Also, blood samples were collected at days 0, 3 and 9 for measuring of progesterone concentrations changes. Cytological study of uterine discharge showed that the bacterial and neutrophils population (P<0.01), and also cell alterations indices (P<0.05) were affected in endometritic group. Histologically, the thickness...

The Scientific World Journal, 2013

Restless leg syndrome (RLS) is one of the prevalent complaints of patients with end stage renal d... more Restless leg syndrome (RLS) is one of the prevalent complaints of patients with end stage renal diseases suffering chronic hemodialysis. Although there are some known pharmacological managements for this syndrome, the adverse effect of drugs causes a limitation for using them. In this randomized clinical trial we aimed to find a nonpharmacological way to improve signs of restless leg syndrome and patients' quality of life. Twenty-six patients were included in the study and divided into 2 groups of control and exercise. The exercise group used aerobic exercise during their hemodialysis for 16 weeks. The quality of life and severity of restless leg syndrome were assessed at the first week of study and final week. Data were analyzed using SPSS software. The difference of means of RLS signs at the first week of study and final week was -5.5 ± 4.96 in exercise group and -0.53 ± 2.3 in control group. There was not any statistical difference between control group and exercise group in ...

Animal Feed Science and Technology

Journal of Animal and Poultry Sciences, 2014

An experiment was conducted to study the effects of different levels of exogenous enzymes on egg ... more An experiment was conducted to study the effects of different levels of exogenous enzymes on egg quality characteristics and immunological responses of laying hens fed diets containing different levels of safflower meal. The 47-week old layers (Hy-Line W-36) were fed 10 experimental diets consisting five levels of safflower meal (0.0, 2.5, 5.0, 7.5 and 10.0%) and two levels of dietary exogenous enzyme (0.0 and 0.1% Bergazym P) during the experimentation. The trial period lasted for a total of 10 weeks, and egg quality indices were measured as two 35 day experimental periods. After 48 and 55 days of experiment, birds were injected with 1 mL of 7% Sheep Red Blood Cells (SRBC) intramuscularly. At the end of experiment, the antibody titer against SRBC and differential circulating leukocyte count were measured for investigating immune status. Least squares mean analysis showed that although the inner egg quality characteristics (yolk index and Haugh unit) were not influenced by dietary t...

Journal of Dairy Science, 2020

The objective of this study was to investigate the effects of an enzymatically hydrolyzed cottons... more The objective of this study was to investigate the effects of an enzymatically hydrolyzed cottonseed protein (HCSP) as a peptide source on performance, blood metabolites, gastrointestinal development, and intestinal microbes. Forty-eight newborn Holstein calves were randomly assigned to 1 of the 4 dietary treatments including 0, 2, 4, and 6% of HCSP (dry matter basis). All calves received the same amount of pasteurized whole milk, weaned on d 56 of the experiment, and the study was concluded on d 70. Data were analyzed using PROC MIXED in SAS (SAS Institute Inc., Cary, NC) as a randomized complete block design with linear and quadratic contrasts. Results showed that increased amount of HCSP linearly decreased the starter intake during the postweaning (d 57 to 70) and overall period (d 1 to 70). In addition, when dietary HCSP increased during the overall period, average daily gain tended to linearly decrease. All skeletal growth variables also linearly decreased as dietary HCSP increased at the end of the study, except for body length, which did not differ among the treatments. Serum cortisol concentration was higher in calves supplemented with 6% of HCSP at weaning and at the end of the study. This indicates that these calves may have experienced a stressful condition compared with calves in other treatments. Total antioxidant capacity was quadratically affected by HCSP supplementation; calves fed 2 and 4% of HCSP diets had the highest total antioxidant capacity, whereas calves fed 0 and 6% HCSP diets had lower total antioxidant capacity at weaning and at end of the study. Calves supplemented with 6% HCSP had lower empty reticulo-rumen and omasum weights and rumen wall thickness compared with calves in other treatments at the end of the study. In conclusion, supplementation of HCSP at the rate of 2% of starter diet enhanced antioxidant status without any detrimental effects on the performance and metabolic status of calves, whereas greater inclusion rates impaired starter intake and growth of calves, and exposed them to a stressful status.

Journal of Animal and Poultry Sciences, 2013

The present study aimed to investigate the effects of dietary supplementation of multi-enzyme on ... more The present study aimed to investigate the effects of dietary supplementation of multi-enzyme on productive performance of laying hens fed different levels of safflower meal. A total of 250 Leghorn laying hens (Hy-Line W-36) 47 weeks-old were randomly assigned into 10 experimental treatments with 5 replicates of 5 birds each. Experimental treatments consisted of five safflower meal levels (0.0, 2.5, 5.0, 7.5 and 10.0 g/100g of diet) with and without multienzyme (Bergazym P®,0.0 and 0.1 g/100g of diet) as a 5 × 2 factorial arrangement that fed during a 10 weeks feeding trial. During the experimental period, eggs were collected and weighed daily, and feed consumption was weekly recorded. Then, the productive performance indices including feed consumption, egg production percentage, egg weight, egg mass and feed conversion ratio (FCR) were reported as 14 d intervals and during entire trial period. Feeding laying hens 2.5% and 5% safflower meal showed tendency to increased egg mass in t...

Annals of Biological Research, 2013

Endometritis is a prevalent uterine infection in postpartum dairy cows that causes some alteratio... more Endometritis is a prevalent uterine infection in postpartum dairy cows that causes some alterations in the endometrium. So, the aim of this study was to determine the comparative cellular and histological characteristics of uterus, especially neutrophils index and cell morphological alterations, in healthy and endometritic Holstein cows. Thirty non-pregnant cows were used. Based on uterine discharge score, they were grouped into healthy (nine) and endometritic (twenty one) cows. Uterine discharges were sampled at day 0 of oestrus cycle for studying cellular characteristics. At second day of cycle, larger horn of uteri were sampled for histological investigations. Also, blood samples were collected at days 0, 3 and 9 for measuring of progesterone concentrations changes. Cytological study of uterine discharge showed that the bacterial and neutrophils population (P<0.01), and also cell alterations indices (P<0.05) were affected in endometritic group. Histologically, the thickness...

The Scientific World Journal, 2013

Restless leg syndrome (RLS) is one of the prevalent complaints of patients with end stage renal d... more Restless leg syndrome (RLS) is one of the prevalent complaints of patients with end stage renal diseases suffering chronic hemodialysis. Although there are some known pharmacological managements for this syndrome, the adverse effect of drugs causes a limitation for using them. In this randomized clinical trial we aimed to find a nonpharmacological way to improve signs of restless leg syndrome and patients' quality of life. Twenty-six patients were included in the study and divided into 2 groups of control and exercise. The exercise group used aerobic exercise during their hemodialysis for 16 weeks. The quality of life and severity of restless leg syndrome were assessed at the first week of study and final week. Data were analyzed using SPSS software. The difference of means of RLS signs at the first week of study and final week was -5.5 ± 4.96 in exercise group and -0.53 ± 2.3 in control group. There was not any statistical difference between control group and exercise group in ...

Animal Feed Science and Technology