Effect of Octacosanol Supplementation on Productive and Physiological Performance of Aged Silver Montazah Strain During Summer Season

Abstract

The objective of this study was to evaluate the impact of supplementation levels (0, 8, 16 and 24 mg octacosanol (octa) / kg diet) on productive and physiological performance of aged Silver Montazah strain. A total number of 120 laying hens and 24 cocks of Silver Montazah local strain at 60 weeks of age was utilized in a completely randomized design and randomly assigned into 4 treatment groups (30 hens + 6 cocks in each treatment). Each group was divided into three replicates (10 hens and 2 cocks in each replicates). The 1 st group was fed the basal diet and served as the control group .The 2 nd , 3 rd and 4 th groups were fed the basal diet supplemented with 8, 16, and 24 mg octacosanol /kg diet respectively. The obtained results revealed that egg production percentage, egg mass, feed conversion ratios, concentrations of cholesterol, triglycerides, and LDL cholesterol, ovary weights, number of small yellow follicles (SYFs) and large white follicles (LWFs) were significantly (P≤0.05) improved by supplemented at levels of 16 mg or 24 mg octa /kg diet as compared with the control group. In addition, albumen height and Haugh unit were significantly (P≤0.05) improved than the control group at level of 24 mg octa /kg diet. Yolk diameter, concentrations of total protein, progesterone, estradiol, FSH, and LH, sperm cell concentration as well as sperm motility, dead spermatozoa, sperm abnormality and acrosomal 518 EL-WARDANY damage were significantly improved by increasing levels of octa when compared with the control group. Conclusively, it is clear that, supplementation of 16 mg octacosanol /kg diet is recommended for improving most of productive and reproductive traits, including egg production, some parameters egg quality, of semen quality and reduce serum lipid of laying hens, during summer season, under Inshas, Sharkia Province, Egypt environment conditions.

Effect of dietary octacosanol concentration extracted from triticale sprout on laying performance, egg quality, and blood parameters of laying hens

“…Serum concentrations of triglyceride and cholesterol of hens fed with 20 and 30 mg/kg of supplementary OCT were significantly ( p < 0.05) lower compared to those fed the control diet. Our results are consistent with previous reports that OCT supplementation lowers cholesterol and triglyceride concentrations in the blood serum of laying hens [ 12 , 18 ]. The reason for the reduction of cholesterol and triglycerides via supplementary OCT in laying hens is not well-understood, however it may be linked to OCT’s capacity to regulate enzymatic activity in the lipid metabolism [ 26 ].…”

“…These results are supported by Peng et al [ 12 ], who showed that treatments containing 18 and 27 mg/kg of OCT significantly increased egg production. Similar outcomes were highlight by El-Wardany et al [ 18 ] and Long et al [ 10 ] following OCT treatment. OCT has been reported to elevate follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), and prostaglandin (P4) [ 10 ] involved in egg maturation and production.…”