Restricted feeding regimens improve white striping associated muscular defects in broiler chickens

Autor: Hammed Ayansola, Yanhui Luo, Yan Wan, Xiaoxiao Yu, Jiaqi Lei, Kewei Yu, Chaoyong Liao, Yuming Guo, Bingkun Zhang, Bo Wang
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Animal Nutrition, Vol 12, Iss , Pp 128-137 (2023)
Druh dokumentu: article
ISSN: 2405-6545
DOI: 10.1016/j.aninu.2022.09.009
Popis: The current study investigated the effects of intermittent feeding (IF) and fasting strategies at different times post–hatch on muscle growth and white striping (WS) breast development. In the first trial, 32 one-day-old Abor Acre broilers were fed ad libitum (AL) for 3 d post–hatch and then randomly allotted into 4 feeding strategies including AL, 1h-IF group (1 h IF, 4 times feeding/d, 1 h each time), 1.5h-IF (1.5 h IF, 4 times feeding/d, 1.5 h each time), and fasting (1d acute fasting, 6 d free access to feed) groups and fed for 7 d. Although angiogenic genes including VEGFA, VEGFR1, and VEGFR2, and myogenic genes including MYOG and MYOD were upregulated (P 0.05). In the second trial, 384 one-day-old birds were fed AL for 1 wk and then randomly allotted to the above 4 feeding strategies starting at 8 d of age until 42 d of age. Similarly, IF and fasting strategies upregulated the expression of angiogenic and myogenic genes (P 0.05). Fasting and 1h-IF reduced the expression of adipogenic genes ZNF423 and PDGFRα (P
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