Influence of Darkness Program on Performance Characteristics and Some Physiological Parameters of Ross 308 Boiler Chicks | ||
| Journal of Animal and Poultry Production | ||
| Article 1, Volume 14, Issue 10, October 2023, Pages 113-118 PDF (691.72 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2023.236040.1092 | ||
| Authors | ||
| Z. M. Kalaba* 1; F. S. Ismail2; A. K. Abd El Salam2; Sara Kh. Sherif2 | ||
| 1Poultry Production Department; Faculty of Agriculture; Mansoura University; Mansoura: Egypt | ||
| 2Poult. Produc. Dept.; Fac. of Agric.; Mans. Uni.; Mansoura; Egypt. | ||
| Abstract | ||
| The experimental designed to measure the effect of darkening programs on growth rates and some blood parameters in broiler chicks. Six hundred Ross308 chicks Wing-banded at 1-day old were divided into four trail groups, each with 3 replications. The chicks were raised on ground litter containing sawdust. Chick's were subjected to four darkness program: Treatment 1, serviced as a control (24 light + zero dark), Treatment 2 (18 L + 6 D continues when chicks arrived 150 g), Treatment 3 (1 hour of darkness at 2ndday, 2 hours of darkness at the start of the 2nd week, 3 hours of darkness at the start of the 3th week, 4 hours of darkness at the start of the 4th week and 5 hours of darkness at the start of the 5th week) and Treatment 4 (1 hour of darkness from the 4th day until the 7th day, 4 hours of darkness from the 8th day until the 14th day, and 6 hours of darkness from the 15th day until the 30th day). The results indicated that, the positive effect of the darkness schedule program which used in the experimental trail is treatment four. | ||
| Keywords | ||
| Darkness; Schedule; Growth; Physiological parameter | ||
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