Transfer of β-hydroxy-β-methylbutyrate from sows to their offspring and its impact on muscle fiber type transformation and performance in pigs

Haifeng Wan; Jian Li; Zhengfeng Fang; De Wu; Jiatao Zhu; Caimei Wu; Pan Zhou; Yong Shen; Yan Lin; Shengyu Xu; Lianqiang Che; Bin Feng

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Transfer of β-hydroxy-β-methylbutyrate from sows to their offspring and its impact on muscle fiber type transformation and performance in pigs

机译：β-羟基-β-甲基丁酸从母猪向后代的转移及其对猪肌肉纤维类型转化和生产性能的影响

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Background:Previous studies suggested that supplementation of lactating sows withβ-hydroxy-β-methylbutyrate (HMB) could improve the performance of weaning pigs,but there were little information in the muscle fiber type transformation of the offspring and the subsequent performance in pigs from weaning through finishing in response to maternal HMB consumption.The purpose of this study was to determine the effect of supplementing lactating sows with HMB on skeletal muscle fiber type transformation and growth of the offspring during d 28 and 180 after birth.A total of 20 sows according to their body weight were divided into the control (CON,n =10) or HMB groups (HMB,n =10).Sows in the HMB group were supplemented withβ-hydroxy-β-methylbutyrate calcium (HMB-Ca) 2 g/kg feed during d 1 to 27 of lactation.After weaning,48 mixed sex piglets were blocked by sow treatment and fed standard diets for post-weaning,growing,finishing periods.Growth performance was recorded during d 28 to 180 after birth.Pigs were slaughtered on d 28 (n =6/treatment) and 180 (n =6/treatment) postnatal,and the longissimus dorsi (LD) was collected,respectively.Results:The HMB-fed sows during lactation showed increased HMB concentration (P ＜ 0.05) in milk and LD of weaning piglets (P ＜ 0.05).In addition,offsprings in HMB group had a higher finishing BW and lean percentage than did pigs in CON group (P ＜ 0.05),meanwhile,compared with pigs from sows fed the CON diet,pigs from sows fed HMB diet showed higher type Ⅱ muscle fiber cross-sectional area (CSA),elevated myosin heavy chain (MyHC) Ⅱb and Sox6 mRNA,and fast-MyHC protein levels in LD (P ＜ 0.05).Conclusions:HMB supplemented to sow diets throughout lactation increases the levels of HMB in maternal milk and skeletal muscle of pigs during d 28 after birth and promotes subsequent performance of pigs between d 28 and 180 of age by enhancing glycolytic muscle fiber transformation.

机译：背景：以前的研究表明，给哺乳母猪补充β-羟基-β-甲基丁酸（HMB）可以改善断奶仔猪的性能，但是关于后代的肌肉纤维类型转化以及断奶仔猪后续性能的信息很少本研究的目的是确定在母猪出生后第28天和第180天补充HMB补充哺乳母猪对骨骼肌纤维类型转化和后代生长的影响。将其体重分为对照组（CON，n = 10）或HMB组（HMB，n = 10）.HMB组的母猪补充β-羟基-β-甲基丁酸钙（HMB-Ca）2 g /在哺乳期的第1至27天以千克饲料为食。断奶后，对48只混交性仔猪进行母猪处理，并为断奶后，成长期，肥育期饲喂标准日粮。在出生后第28至180天记录生长性能在出生后第28天（n = 6 /次）和180（n = 6 /次）屠宰猪，分别收集背最长肌（LD）。结果：哺乳期间由HMB喂养的母猪显示HMB增加断奶仔猪的乳汁和低密度脂蛋白浓度（P ＜0.05）（P ＜0.05）。此外，HMB组的后代的BW和瘦肉率要高于CON组（P ＜0.05）。饲喂CON饲料的母猪，饲喂HMB饲料的母猪表现出更高的Ⅱ型肌纤维截面积（CSA），肌球蛋白重链（MyHC）Ⅱb和Sox6 mRNA升高，LD中快速MyHC蛋白水平（P ＜0.05）。结论：在泌乳期间向母猪日粮中添加HMB可以提高出生后28 d猪的母乳和骨骼肌中HMB的水平，并通过增强糖酵解性肌纤维的转化来促进随后28〜180岁的猪的性能。

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《畜牧与生物技术杂志(英文版)》 |2017年第2期|438-449|共12页
作者
Haifeng Wan; Jian Li; Zhengfeng Fang; De Wu; Jiatao Zhu; Caimei Wu; Pan Zhou; Yong Shen; Yan Lin; Shengyu Xu; Lianqiang Che; Bin Feng;
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Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

Institute of Animal Nutrition, Sichuan Agricultural University, No.211, Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, People's Republic of China;

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Transfer of β-hydroxy-β-methylbutyrate from sows to their offspring and its impact on muscle fiber type transformation and performance in pigs

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