Utilization of Restricted feed in various time on Protein and Energy Efficiency of Female Broiler Chicks

الملخص

Considerable research has investigated the potential benefits of reducing protein content in broiler chicken diets, yielding varied outcomes. Broiler feed intake has been restricted through various regimens, which have demonstrated reductions in feeding expenses, decreased fat deposition, enhanced feed efficiency, and lowered incidence of metabolic disorders. This study aimed to elucidate the advantages of feed restriction on the energy and protein efficiency of female broiler chicks. The experiment involved four treatments, each with five replicates, conducted on 300-day-old broiler chicks. The chick groups were randomly allocated into 20 groups of 15 chicks, with similar average body weights per pen, and subjected to four distinct treatments with five replicates each. The control group received ad libitum feeding, while the second group (T1) experienced restricted feeding for 4 hours within a 24-hour period (9 am–1 pm). The third group (T2) faced restrictions from 9 am to 5 pm, and the fourth group (T3) from 9 am to 9 pm. Water was the only freely available resource. All birds were fed a standard diet following the suggested technique (NRC, 1994). Over recent decades, significant improvements have been observed in the growth rate, feed efficiency, and meat yield of broiler chickens due to advancements in genetics, nutrition, and environmental control. The imposition of feed restriction notably enhanced weight gain at the experiment’s conclusion, particularly evident in the second and third treatments. These differences were statistically significant, resulting in reduced feed consumption and meaningful improvements in food conversion efficiency, protein and energy utilization, and protein and energy conversion rates.