Naser Mahmoudnia; Behrouz Dastar; Omid Ashayerizadeh; Javad Bayat
Volume 21, Issue 2 , July 2019, , Pages 261-271
Abstract
Two experiments were conducted to determine the nutrient ileal digestibility of raw date pit (RDP) and fermented date pit (FDP) as well as their effects on performance and some bloody traits in broiler chickens,. The first experiment was conducted in a completely randomized design with 72 male broiler ...
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Two experiments were conducted to determine the nutrient ileal digestibility of raw date pit (RDP) and fermented date pit (FDP) as well as their effects on performance and some bloody traits in broiler chickens,. The first experiment was conducted in a completely randomized design with 72 male broiler chicks, three treatments and six replicates (four chicks each) . The treatments consisted of a corn – soybean diet and two experimental diets which prepared by replacing RDP and FDP to basal diet at 25 %. The second experiment was performed in a 2× 4 factorial arrangement along with a control treatment in completely randomized design in a population of 540 day old broiler chickens in nine treatments with five replicates (12 chicks each). Dietary treatments included a diet without date pit (control), and diets containing two, four, six and eight percent of RDP or FDP. The digestibility of crude protein, fiber and ash in the FDP were higher than RDP (p<0.05). Feeding broiler chickens with FDP compared to RDP, improved weight gain (2110.5 g vs 1991.3 g ) and increased feed intake (p<0.05). The blood cholesterol and LDL-c decreased in chickens fed by FDP compared to RDP (p<0.05). According to the results of this experiment fermentation of date pit increases digestibility of its nutrients and improves weight gain of broiler chickens.
Behrouz Dastar; mohsen rajabzadeh nesvan; Mahmoud Shams Shargh; Mokhtar Mohajer
Volume 18, Issue 3 , October 2016, , Pages 553-562
Abstract
The effect of feeding different protein profiles on growth performance, carcass components and nitrogen content of litter in Cobb 500 broiler strain was evaluated using 800 chicks in a completely randomized design with four treatments, five replicates groups of 40 birds per each treatment. The treatments ...
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The effect of feeding different protein profiles on growth performance, carcass components and nitrogen content of litter in Cobb 500 broiler strain was evaluated using 800 chicks in a completely randomized design with four treatments, five replicates groups of 40 birds per each treatment. The treatments were consisted of four protein feeding profiles (based on Cobb strain nutrition guide, recommendation by NRC, 90% protein recommended by NRC and phase feeding). The effect of different treatments on body weight gain, feed intake, energy consumption, protein efficiency ratio and carcass components were not significant. The birds were fed based on Cobb strain guide had a better feed conversion ratio (P< 0.05). Energy efficiency ratio in broilers fed base on protein profile of Cobb strain guide was higher than other treatments (P< 0.05). The amount of litter nitrogen in broilers fed with base on Cobb strain guide, 90% protein recommended by NRC and phase feeding were lower than those fed base on protein profile of NRC recommendation (P< 0.05). Based on the results of this experiment, the use of protein profile base on Cobb strain is more suitable for feeding Cobb broiler chickens than other profiles.
vahid Jazi; Fathollah Boldaji; Behrouz Dastar; Seyed Reza Hashemi; Amin Ashayerizadeh
Volume 18, Issue 2 , June 2016, , Pages 311-321
Abstract
The effect of feeding fermented cottonseed meal on performance, carcass characteristics and blood serum lipid profile was studied in a completely randomized design with five treatments, five replicates and 12 birds per replication using 300 male Ross 308 broiler chicks. Raw cottonseed meal was fermented ...
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The effect of feeding fermented cottonseed meal on performance, carcass characteristics and blood serum lipid profile was studied in a completely randomized design with five treatments, five replicates and 12 birds per replication using 300 male Ross 308 broiler chicks. Raw cottonseed meal was fermented with a liquid mixed culture containing Bacillus subtilis, Aspergillus niger and Aspergillus oryzae with a ratio of 1:1.2. After seven days of fermentation, free gossypol was reduced from 584.33 to 68 mg/kg. The experimental treatments included replacing 0, 10, and 20 percent of the raw or fermented cottonseed meal by the soybean meal in the diet. The use of fermented cottonseed meal in the diet improved weight gain and feed conversion ratio of broilers compared to the raw cottonseed meal (P<0.05). At 21 and 42 d, weight gain and feed conversion ratio of the birds fed diets containing 10 and 20 percent of fermented cottonseed meal did not have a significant difference with the birds fed by the control diet. Abdominal fat was lower in birds fed diets containing fermented cottonseed meal compared with the others (P<0.05). Serum concentrations of cholesterol and triglyceride were significantly lower for the birds fed by diets containing fermented cottonseed meal, compared with the other groups (P<0.05). Based on the results, the use of fermented cottonseed meal improves the performance and health of broiler chickens compared to the raw cottonseed meal.