Morteza Pashaei- jalal; seyed davood sharifi; Shirin Honarbakhsh
Volume 24, Issue 2 , July 2022, , Pages 151-163
Abstract
The aim of this study was to investigate the effect of emulsifier in diet with with energy reduction on performance, carcass characteristics and some of blood traits of broilers. A total of 540 one-day-old chicks of Ross 308 strain in a 3×3 factorial arrangement with three levels of emulsifier ...
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The aim of this study was to investigate the effect of emulsifier in diet with with energy reduction on performance, carcass characteristics and some of blood traits of broilers. A total of 540 one-day-old chicks of Ross 308 strain in a 3×3 factorial arrangement with three levels of emulsifier (0, 250 and 500 mg / kg) and three levels of dietary energy (requirement, and 45 and 90 kcal/Kg, 60 and 105 kcal/kg and 75 and 120 kcal/kg less than requirement for the starter, grower and finisher diets, respectively) in a completely randomized design with 9 treatments, 4 replications and 15 birds per replication were used. In total rearing period, feed intake increased by decreasing the dietary energy (P<0.05). Birds fed diets supplemented by emulsifier had higher weight gain and lower feed conversion ratio (P<0.05). The relative weights of the liver, ceca, and abdominal fat were not affected by different levels of dietary energy. The emulsifier × diet interaction had no significant effect on cholesterol, High-density lipoprotein (HDL), Low-density lipoprotein (LDL), cholesterol: HDL, Alanine aminotransferase (ALT) and alkaline Phosphatase. Adding emulsifier to normal diets or diets with more energy deficiency increased blood triglyceride concentration (P<0.05). Supplementing diets with mild energy deficiency by emulsifier increased serum Aspartate aminotransferase (AST) (P<0.05). According to the results, the use of 250 gr/t emulsifier in low energy diets improved the performance of broiler chickens.
Behnam Abbaspour; seyed davood sharifi; shokoufe ghazanfari; abdollah mohammadi sang cheshmeh; Shirin Honarbakhsh
Volume 21, Issue 2 , July 2019, , Pages 279-290
Abstract
This study aimed to evaluate the effect of L-arginine on qualitative characteristics and fatty acid profile of Ross 308 aged broiler breeder roosters’ sperm. Twelve breeder roosters at age of 52 week were used in a completely randomized design with three treatments and four replicates in each treatment ...
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This study aimed to evaluate the effect of L-arginine on qualitative characteristics and fatty acid profile of Ross 308 aged broiler breeder roosters’ sperm. Twelve breeder roosters at age of 52 week were used in a completely randomized design with three treatments and four replicates in each treatment for eight consecutive weeks. Experimental groups were consisting diets with levels of 0.52 (Ross recommendation 308), 0.68 and 0.83 present of arginine amino acids. Semen collection was performed every 14 days and in weeks 54, 56, 58 and 60 were tested. At the end of the trial, fatty acid profile of sperm was also evaluated. On week 56, semen volume in roosters with 0.68 present arginine was higher than other treatments (P<0.05). On week 60, levels of 0.52 and 0.68 percent arginine in semen volume, percentage of total and progressive motility were higher than the level of 0.83 percent of arginine (P<0.05). On week 58, the percentage of abnormal sperm were lower in 0.68 and 0.83 percent arginine treatment compared to 0.52 percent arginine (P<0.05). Semen concentration, sperm plasma membrane functionality and sperm fatty acid profile were not affected by treatments used in this study. It can be concluded that 0.68 percent of arginine (30% higher than recommendation) of diet improve some qualitative sperm parameters in aged broiler breeder roosters.