Mahmoud Reza Heidari; Behrouz Dastar; Seyed Naser Mousavi; Reza Mirshekar; Sayed Abdoullah Hosseini; Majid Abbasi
Abstract
For this expriment 1440 Ross 308 male broilers (from 1 to 42 days of age) were used in a randomized complete block design with eight treatments in six blocks. Experimental diets included: soybean meal (control treatment), raw soybeans, full-fat soybeans extruded (15%) at 90 and 150°C, and each of ...
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For this expriment 1440 Ross 308 male broilers (from 1 to 42 days of age) were used in a randomized complete block design with eight treatments in six blocks. Experimental diets included: soybean meal (control treatment), raw soybeans, full-fat soybeans extruded (15%) at 90 and 150°C, and each of them with 0.02% or without (0.0) protease enzyme supplementation. The use of raw soybean compared to soybean meal or extruded full-fat soybean significantly reduced feed intake, body weight and relative carcass weight, as well as increased feed conversion ratio and pancreatic weight (P<0.01). weight gain was improved in diets supplemented by protease enzyme compared to diets containing raw soybean (P<0.01). Feed conversion ratio was improved in diets containing raw soybean and soy bean meal by dietary protease supplementation (P<0.01). Extrusion temperature did not affect the growth performance of experimental birds. Diet containing raw soybean without enzyme increased blood cholesterol levels (P <0.05). According to the findings of this study, the use of protease enzyme in diets containing soybean meal or raw soybean can improve the performance of broilers However, such effect is less pronounced in diets containing extruded full-fat soybean meal.
Seyed Naser Mousavi; Alireza Jafari Eravari; Esa Fahimi; Reza Taherkhani; Pouya Zamani
Abstract
A total of 384 Shaver laying hens were selected at 50 weeks of age, and used in a factorial arrangement with two feed forms (mash and pellet) and three cage densities (3, 4 and 5 hens per cage) for 10 weeks. During 10 weeks of experiment, laying performance and at week 10 egg quality parameters, were ...
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A total of 384 Shaver laying hens were selected at 50 weeks of age, and used in a factorial arrangement with two feed forms (mash and pellet) and three cage densities (3, 4 and 5 hens per cage) for 10 weeks. During 10 weeks of experiment, laying performance and at week 10 egg quality parameters, were measured. The results showed that hens fed pellet feed had higher egg weight at first 5 weeks and higher egg weight and lower feed intake and lower feed conversion ratio for ovearll 10 weeks of experiment, compared to those fed mash diet. During first 5 weeks of experiment, with increasing birds per cage 3 to 4 and 5, feed intake and feed conversion ratio (P<0.01), and for overall 10 weeks of experiment, with increasing birds from 3 to 5 per cage, egg production and feed consumption werer significantly reduced (P<0.05). The final body weight and weight changes of lying hens were affected by the cage density, feed form (P<0.01) and their interaction (P<0.05) during experimental period. The effect of cage density on shell thickness and specific gravity of eggs was significant (P<0.05). Egg production during the day was postponed in birds fed pellet feed or reared at higher density. The results showed that by increasing the cage density, laying performance was decreased, but for hens fed pellet feed, cage density had no effect on feed intake.
Seyed Naser Mousavi; Mahmoud Shivazad; Mohammad Chamani; Housahang Lotfolahian; Ali Asghar Sadeghi
Volume 42, Issue 2 , October 2011, , Pages 153-160
Abstract
In this research 400 Ross 308 breeder fertile eggs were weighed At day 16 of incubation and evenly distributed into 4 treatments with 4 replicates per treatment and 25 eggs per replicate in a CRD design. On day 18 of incubation, 1 ml of an in ovo feed solution including: I) Carbohydrate (CHO), II) Amino ...
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In this research 400 Ross 308 breeder fertile eggs were weighed At day 16 of incubation and evenly distributed into 4 treatments with 4 replicates per treatment and 25 eggs per replicate in a CRD design. On day 18 of incubation, 1 ml of an in ovo feed solution including: I) Carbohydrate (CHO), II) Amino acid (AA), and III) Butyric acid solution in 0.5% saline was injected into amniotic fluid of eggs. The control group remained non-injected. After injection eggs were transferred to hatcher. Upon hatch, chicks were weighed, sexed and transferred to the experimental house and reared to 42 days. At day two the midpoint of the jejunum was sampled for intestinal morphometric examination. The hatchability didn't differ significantly between treatments. Body weight and body weight to egg weight ratio of all in ovo injected hatchlings was greater than in controls (P
