Kamel Amozadeh Araee; Taghi Ghoorchi; Abdolhakim Toghdory; Mohammad Asadi; Katayoun Mehrani
Volume 25, Issue 1 , April 2023, , Pages 71-81
Abstract
The effect of different levels of Oji plant powder on performance, nutrient digestibility, rumination behavior, blood and rumen parameters of Dalagh ewes, using 18 ewes with an average weight of 38±3.5 kg in a completely randomized design with three treatments and six Repetition was investigated. ...
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The effect of different levels of Oji plant powder on performance, nutrient digestibility, rumination behavior, blood and rumen parameters of Dalagh ewes, using 18 ewes with an average weight of 38±3.5 kg in a completely randomized design with three treatments and six Repetition was investigated. The treatments included 1- control (without Oji powder), 2- 25 gr of Oji powder per day and 3- 50 gr of Oji powder per day. Different levels of Oji powder in ewes had no effect on the weight at the end of the period, daily weight gain, cholesterol, glucose, total protein, albumin, globulin and blood albumin/globulin ratio. Feeding ewes with different levels of Oji powder decreased the apparent digestibility of dry matter, increased nutritional consumption behavior and rumination activity, and increased blood urea and triglyceride levels(P<0.05). Feeding ewes with different levels of Oji powder caused a significant decrease in protozoan population three hours after feeding and an increase in rumen pH three hours after morning feeding(P<0.05). Ruminal ammonia concentration in ewes that received 50 gr of Oji powder per day was higher than other treatments(P<0.05). According to the results of this research, adding the powder of Oji plant up to the level of 50 gr per day to the ration of Dalagh ewes does not have a significant effect on the functional traits of the animal, and it also shows a positive effect on the protozoan population and rumen pH.
Mostafa Hossein Abadi; Taghi Ghoorchi; Abdolhakim Toghdory
Volume 24, Issue 1 , April 2022, , Pages 35-45
Abstract
Effect of Saccharomyces cerevisiae on growth performance, health index, nutrient digestibility, serum metabolites and feed consumption behavior of infant calves using 18 Simmental infant male calves aged about 20 days and initial body weight 47±2.4 kg was studied in a completely randomized design ...
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Effect of Saccharomyces cerevisiae on growth performance, health index, nutrient digestibility, serum metabolites and feed consumption behavior of infant calves using 18 Simmental infant male calves aged about 20 days and initial body weight 47±2.4 kg was studied in a completely randomized design with three treatments and six replications. Treatments included: 1- control group (without yeast), 2- treatments containing 2.5 grams of Saccharomyces cerevisiae yeast per day and 3- Treatments containing five grams of Saccharomyces cerevisiae yeast per day. The trial period was 60 days, which included a seven-day acclimatization period. Dry matter intake and daily weight gain were measured and feed conversion ratio was calculated. Digestibility of nutrients and blood metabolites were measured. Calves receiving five grams of yeast had higher weight gain and better conversion ratio (P <0.05). Blood glucose, cholesterol, triglyceride and nitrogen urea concentrations were not affected by experimental treatments. Dry matter digestibility was higher in calves consuming 5 g of yeast than the control group (P <0.05). According to the results of this study, the use of yeast improves daily weight gain and improves feed conversion ratio as well as significantly increases dry matter digestibility, so it is possible to use Sacromycis cerevisiae in the diets of suckling calves, Used at a level of five grams per day.
mostafa hosein abadi; taghi ghorchi; abdolhakim toghdari
Volume 24, Issue 1 , April 2022, , Pages 35-45
Abstract
Effect of Saccharomyces cerevisiae on growth performance, health index, nutrient digestibility, serum metabolites and feed intake behavior of dairy calves using 18 Simmental dairy male calves aged about 20 days and initial body weight 47±2.4 kg was studied in a completely randomized design with ...
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Effect of Saccharomyces cerevisiae on growth performance, health index, nutrient digestibility, serum metabolites and feed intake behavior of dairy calves using 18 Simmental dairy male calves aged about 20 days and initial body weight 47±2.4 kg was studied in a completely randomized design with 3 treatments and 6 replications. Treatments included: 1- control group (without yeast), 2- treatment containing 2.5 grams of Saccharomyces cerevisiae yeast per day and 3- treatment containing 5 grams of Saccharomyces cerevisiae yeast per day. The experimental period lasted 60 days, which the first 7 days were considered as adaptation period. Dry matter intake and daily weight gain were measured, and feed conversion ratio was calculated. Digestibility of nutrients and blood metabolites were also determined. The calves received 5 grams of yeast had higher weight gain and better feed conversion ratio (P<0.05). Blood glucose, cholesterol, triglyceride, and nitrogen urea concentrations were not affected by experimental treatments. The digestibility of dry matter was higher in dairy calves consuming 5 grams of yeast than the control group (P< 0.05). According to the results of the present study, the use of yeast increased daily weight gain and dry matter digestibility and improved feed conversion ratio. Therefore, Saccharomyces cerevisiae yeast can be used in dairy calf diets at a level of 5 grams per day
Ayub Mohammadi; Farhang Fatehi; Abolfazl Zali; Mehdi ganjkhanlou; Amirhossein Sarzaem
Volume 22, Issue 2 , June 2020, , Pages 259-269
Abstract
The objective of this study was to evaluate the effects of feed bunk space and forage particle size on feed intake and nutrient digestibility in growing Holstein female calves. Fourty Holstein female calves with an average age of 8-12 months (295.6 ± 32.8 kg) were used in a 2×2 factorial ...
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The objective of this study was to evaluate the effects of feed bunk space and forage particle size on feed intake and nutrient digestibility in growing Holstein female calves. Fourty Holstein female calves with an average age of 8-12 months (295.6 ± 32.8 kg) were used in a 2×2 factorial change-over design (with four treatments, four periods and four stalls), in which 10 calves were allocated to each stall. The current experiment lasted 4 months as one month allocated to each period. The experimental treatments were included: 1) 24 cm of feed bunk space and average forage particle size of 4.6 mm (24/fine); 2) 24 cm of feed bunk space and average forage particle size of 7.1 mm (24/coarse); 3) 48 cm of feed bunk space and average forage particle size of 4.6 mm (48/fine); 4) 48 cm of feed bunk space and average forage particle size of 7.1 mm (48/coarse). The results of this study showed that the apparent digestibilities of DM, CP and NDF for the 48/Coarse treatment was the highest, the treatment of 24/Coarse had an intermediate state, and for the treatment of 48/fine and 24/fine were the lowest. Also, apparent digestibilities of DM, CP and NDF were higher for treatments including coarse forage particles than treatments with fine forage particle size. Finally, it seems that feeding growing Holstein heifers with diets containing coarse forage particle size could result in better nutrient digestibility.
shokoufe ghazanfari
Volume 19, Issue 3 , November 2017, , Pages 627-643
Abstract
This study was carried out toinvestigate the effect ofmannan-oligosaccharide prebioticonperformance,egg quality, immune response, intestine ileum microflora and nutrient digestibility in laying hens fed various levels of crude protein. A total of 150 Hy-Line W-36 layinghens were assigned to a 2×3 ...
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This study was carried out toinvestigate the effect ofmannan-oligosaccharide prebioticonperformance,egg quality, immune response, intestine ileum microflora and nutrient digestibility in laying hens fed various levels of crude protein. A total of 150 Hy-Line W-36 layinghens were assigned to a 2×3 factorial arrangement of treatments. Experimental diets consisted of 3 levels of crude protein (recommended level for strain, 90 and 95% of recommended level) and 2 levels of mannan-oligosaccharides (0 and 0.1% of diet). Reduction of crude protein to 10% of basal diet resulted in decrease of egg weight, egg production, egg mass and feed conversion ratio (P<0.01). Supplementation of mannan-oligosaccharide into the diet improved egg production and egg mass (P<0.05). Newcastle antibody titer, primary and second antibody response against sheep red blood cell increased by supplementation of mannan-oligosaccharides (P<0.05). Reduction of crude protein to 5% reduced blood serum triglycerides concentration (P<0.05). Reduction of crude protein to 5 and 10 % of diet caused increases in digestibility coefficients of organic matter and Reduction of crude protein to 10 % caused decline of crude fat digestibility (P<0.05). Dietary supplementation mannan-oligosaccharides increased crude fat digestibility and decreased ileal E. coli count (P<0.05). So, supplementation of mannan-oligosaccharide at levels of 0.1% of diet improved immune parameters and intestinal ileum microflora. Similarly, crude protein at levels of 15.68% of diet did not reduced performance parameters of layinghens from age 47 to 57 weeks.
Elham Sarbaz; Bahman navidshad; Farzad Mirzaei Aghjegheshlagh
Volume 18, Issue 4 , December 2016, , Pages 811-820
Abstract
The effect of peanut pod as insoluble fiber source in diets on growth performance, small intestine morphology and nutrient digestibility of broilers was evaluated. This study was conducted using 320 Ross-308 broiler chickens in a completely randomized design with four treatments diets (containing 0 (control), ...
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The effect of peanut pod as insoluble fiber source in diets on growth performance, small intestine morphology and nutrient digestibility of broilers was evaluated. This study was conducted using 320 Ross-308 broiler chickens in a completely randomized design with four treatments diets (containing 0 (control), 2.5, five or 7.5 percent peanut pod), with five replicates and 16 birds in each from 11 to 42 days of age. At the growth phase (11 to 24 d) dietary peanut pod decreased feed intake and feed conversion ratio, however, the birds that fed the diet containing 7.5 percent had higher daily weight gain (P<0.05). Peanut pod improved the digestibility coefficients of dry matter and ether extract and the diets containing 2.5 or 5.0 percent peanut pod had more organic matter digestibility than the control diet (P<0.05) Chicks that fed the diets containing 5.0 or 7.5 percent peanut pod, the villous was (P<0.05) longer than control birds. The results of present study suggest that using peanut pod up to 7.5 percent of diet did not adversely affect chickens growth performance and can improve feed conversion ratio at the grower phase.