beshara, M., rizk, Y. (2022). IMPACT OF SUPPLEMENTING L-CARNITINE ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF MAMOURA CHICKEN DURING THE WINTER SEASON. Egyptian Poultry Science Journal, 42(2), 171-185. doi: 10.21608/epsj.2022.249544
malak mansour beshara; yaser saddek rizk. "IMPACT OF SUPPLEMENTING L-CARNITINE ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF MAMOURA CHICKEN DURING THE WINTER SEASON". Egyptian Poultry Science Journal, 42, 2, 2022, 171-185. doi: 10.21608/epsj.2022.249544
beshara, M., rizk, Y. (2022). 'IMPACT OF SUPPLEMENTING L-CARNITINE ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF MAMOURA CHICKEN DURING THE WINTER SEASON', Egyptian Poultry Science Journal, 42(2), pp. 171-185. doi: 10.21608/epsj.2022.249544
beshara, M., rizk, Y. IMPACT OF SUPPLEMENTING L-CARNITINE ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF MAMOURA CHICKEN DURING THE WINTER SEASON. Egyptian Poultry Science Journal, 2022; 42(2): 171-185. doi: 10.21608/epsj.2022.249544
IMPACT OF SUPPLEMENTING L-CARNITINE ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF MAMOURA CHICKEN DURING THE WINTER SEASON
1Department of poultry nutrition, Animal production research institute, agriculture research center, Egypt
2animal production research anstitute
Abstract
The purpose of this study was to see how supplementing with L-carnitine affected the productive and reproductive performance of Mamoura chickens from 36 to 48 weeks of age during the winter season. A total number of 132 Mamoura laying hens (120 hens + 12 cocks), 36 weeks (wk.)-old, was used in a completely randomized design and randomly assigned into four dietary treatments as follow: L-carnitine at 0, 150, 300 and 450 mg/kg, each group was included on three replications (10 hens +1 cock in each replicate) and was kept until 48 weeks of age. Results revealed that supplementing different levels of L-carnitine resulted insignificant improvement in feed intake, laying %, fertility, hatchability % of fertile egg and hatchability % of setting egg. Also, the results showed that egg weight, egg mass, Chick weight at hatch liver weight % and heart weight % were significantly increased by feeding diets supplemented with L-carnitine. In hens fed diets supplemented with L-carnitine, feed conversion, mortality percent, serum albumin, cholesterol, serum triglycerides, low density lipoprotein, and aspartate transaminase enzyme levels were all significantly lower. It could be concluded that dietary L-carnitine fortified with300 or 450 mg/kg for Mamoura laying hens in winter led to improvement in productive and reproductive traits.