Effect of Methionine Analogues on Growth Performance, Serum Biochemical Parameters, Serum Free Amino Acids and Rumen Fermentation of Yaks
Xirui Zhang,
Zizhen Zuo,
Yao Liu,
Chenxi Wang,
Zhongli Peng,
Jincheng Zhong,
Ming Zhang,
Haibo Wang
Affiliations
Xirui Zhang
College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
Zizhen Zuo
Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610041, China
Yao Liu
College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
Chenxi Wang
College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
Zhongli Peng
College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
Jincheng Zhong
Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610041, China
Ming Zhang
Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610041, China
Haibo Wang
Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610041, China
This experiment was conducted to investigate the effects of methionine analogues 2-hydroxy-4-methylthio butanoic acid isopropyl ester (HBMi) on growth performance, nutrient apparent digestibility, serum metabolite, serum free amino acids, and rumen fermentation parameters of yaks. Twenty-four male Maiwa yaks (252.79 ± 15.95 kg) were randomly allocated to four dietary treatments: basic diet (CON), or three HBMi (MetaSmart (MS); Adisseo Inc., Antony, France) supplementation treatments: MS1 (5 g), MS2 (10 g), and MS3 (15 g). The results showed that the increase in the supplemented MS levels linearly increased the average daily gain (p p p p p < 0.05). In summary, a diet supplemented with 10 g/d MS could be an effective way to improve the growth performance of fattening yaks without negative effects.
