The current research was conducted to study the effect of dietary supplemental of glycine (gly) levels 0.1 and 0.2 % on modulating productive performance in Mandarah (M) during laying period from 28 to 40 weeks (wks.) of age. The 1st treatment (T1) was fed the basic diet and served as the control treatment with no additional gly. The 2nd and 3rd treatments were fed the basic diet supplemented with 0.1 and 0.2 % gly/kg diet, respectively. Results indicated that hens fed (T2} and (T3) supplementation significantly improved feed conversion ratio for all intervals except from (28 to 30 wks. of age) compared to control. Egg number, egg weight and egg mass values were significantly increase in M hens fed diets containing T2 or T3 compared to control T1 during the whole period studied. Egg quality {shell (thickness and %), albumen %, yolk (% and index)} were significantly affected due to T2 and T3 supplementation to hens. Significant increases have been recorded in abdominal fat % and triglyceride (TG) values of hens in T2 and T3 compared to T1 (control) values at 40 (wks.) of age. Significant decreases have been recorded in litter traits (pH, moisture, nitrogen and ammonia %) of hens of T2 compared to control (T1) values at 40 wks. of age. The results of the current research indicated that gly supplementation during the laying period promoted the productive performance and had beneficial effects on quality of poultry litter.
This study was conducted to evaluate the effect of dietary supplemental of glycine (Gly) on modulating physiological and reproduction performance of Mandarah (M) local chickens. A total of 135 hens and 18 cocks, from 28 to 40 weeks of age were randomly assigned to 3 treatments, and each treatment (T) include 45 hens and 6 cocks divided in 3 replicates of 15 hens and 2 cocks each. The 1 st group (T1) was fed the basal diet and served as a control group (without supplementation). The 2 nd group and 3 rd group were fed the basal diet supplemented with 0.1 and 0.2 %, Gly (1 and 2 gm/ kg diet), respectively.). The study showed that the cocks Gly treatments (0.1 and 0.2 %) were significantly (P<0.05) increased in the ejaculate volume, total sperm output, semen quality factor, total motile sperm, thyroxine (T4) and folliclestimulating hormones (FSH) compared with control treatment. Chickens that received diet supplemented with 0.1 % Gly had significant higher sperm concentration, total antioxidant capacity (TAC), triiodothyronine (T3) than those of control T1. No significant differences among T2, T3 and control (T1) in sperm motility %, live sperm %, dead sperm %, abnormal sperm %, fertility, hatchability, catalase, glutathione enzyme and luteinizing hormone (LH). Conclusively, it could be recommended to supply layer diets with Gly for better physiologically performance during the laying period.
This research was done to find out the effect of in ovo injection of Coenzyme Q10 (CoQ10) at various incubation ages on the physiological and immunity performance of Mamora chickens. A total of 630 hatching eggs were divided into 7 equal treatments (90 eggs per each). The first group was as a negative control, the second group was as a positive control (injected in air sac with 0.3 ml/egg of distilled water at day 1 of incubation), the third and fourth groups were injected with 0.3 ml/egg of distilled water contained 0.1 and 0.2 ml coenzyme Q10 / egg respectively at day1 of incubation, the fifth group was as a second positive control (injected in air sac with 0.3 ml/egg of distilled water at day18), the six and seven groups were injected with 0.3 mL/egg solution of sterile distilled water contained 0.1 and 0.2 mL coenzyme Q10 / egg, respectively at day18 of incubation, Hatched chicks of each treatment were reared till 28 days of age.Results obtained could be summarized as follow: improving the hatchability percentage and decreasing embryonic mortality by in ovo CoQ10 at the 1st and the 18th day of incubation period as compared with negative control group. In ovo injection with CoQ10 led to improve the subsequent growth traits after hatch within the period of 1-28 day of age. Lymphocytes (L, %) was elevated, while heterophils (H, %) was decreased for chicks hatched from eggs injected with 0.2 ml CoQ10 / egg at the 1st day of incubation. All chicks produced from injected eggs with CoQ10 had higher serum catalase enzyme value and lower liver enzymes (AST & ALT) compared with those of negative or positive control. Therefore, in ovo CoQ10 (0.1 or 0.2 ml/egg) injection improve hatchability, post-hatch chick development, and physiological response of hatched Mamora.
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