Effects of Dietary Betaine on Growth Performance, Digestive Function, Carcass Traits, and Meat Quality in Indigenous Yellow-Feathered Broilers under Long-Term Heat Stress

Animals : an Open Access Journal From MDPI
Wenchao LiuLilong An

Abstract

Heat stress has a profound effect on poultry health and productivity. The present study evaluated whether feeding betaine could ameliorate long-term heat stress-induced impairment of productive performance in indigenous yellow-feathered broilers. A total of 240 five-week-old male broilers were randomly allocated to five treatments with six replicates of eight broilers each. The five treatments included a thermoneutral zone control group (TN, fed basal diet), a heat stress control group (HS, fed basal diet), and an HS control group supplemented 500, 1000, 2000 mg/kg betaine, respectively. The TN group was raised at 26 ± 1 °C during the whole study, HS groups exposed to 32 ± 1 °C for 8 h/day from 9:00 am to 17:00 pm. The results showed that heat stress decreased the body weight gain (BWG) and feed intake of broilers during 1-5, 6-10, and 1-10 weeks (p < 0.05). Dietary betaine tended to improve the BWG and feed intake of broilers under 5 weeks of heat stress (linear, p < 0.10), and betaine supplementation linearly increased the BWG and feed intake during 6-10 and 1-10 weeks (p < 0.05). Additionally, nitrogen retention was reduced by 5 weeks and 10 weeks of heat stress (p < 0.05), whereas dietary betaine could improve nitrogen rete...Continue Reading

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Citations

May 8, 2020·In Vitro Cellular & Developmental Biology. Animal·Kun-Lin ChenGuang-Dong Xing
Jul 30, 2020·Animals : an Open Access Journal From MDPI·Sanjeev WastiBirendra Mishra
Apr 29, 2020·Environmental Science and Pollution Research International·Jin-Li NiuYi Ma
Oct 25, 2020·Environmental Science and Pollution Research International·Yan GuoWen-Chao Liu
Dec 15, 2020·Veterinary Medicine and Science·Yue-Xia DingWen-Chao Liu
Apr 14, 2021·Cell Stress & Chaperones·Haitham G Abo-Al-ElaRasha A Al Wakeel
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Alaeldein M AbudabosAbdulrahman S Alharthi

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