Effects of the standardized ileal digestible valine : lysine ratio on performance, milk composition and plasma indices of lactating sows

Yetong Xu, Zhikai Zeng, Xiao Xu, Qiyu Tian, Xiaokang Ma, Shenfei Long, Meijing Piao, Zhibin Cheng, Xiangshu Piao

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

To determine the effects of standardized ileal digestible (SID) valine : lysine ratio on the performance, milk composition and plasma indices of lactating sows, 32 Large White × Landrace sows (219.78 ± 7.15 kg body weight; parity 1.82 ± 0.62) were allotted to one of four dietary treatments with eight sows per treatment based on parity, back fat thickness and body weight. The sows were fed corn-soybean meal-based diets containing 63, 83, 103 or 123% SID valine : lysine from day 107 of gestation until day 28 of lactation. The average daily feed intake of sows and daily weight gain of piglets increased linearly (P < 0.05) while back fat loss decreased linearly (P < 0.05) as the SID valine : lysine ratio increased. All of the analyzed amino acids in sow colostrum and valine concentrations of sow and piglet plasma increased linearly (P < 0.05) with the increasing SID valine : lysine ratio. In conclusion, 88 and 113% dietary SID valine : lysine ratios were optimal to achieve minimum back fat loss and maximum piglet growth rate using a linear-break point model which exceeds the requirement of 85% that is estimated by the National Research Council (2012).

Original languageEnglish (US)
Pages (from-to)1082-1092
Number of pages11
JournalAnimal Science Journal
Volume88
Issue number8
DOIs
StatePublished - Aug 2017

Bibliographical note

Funding Information:
This research was supported by the National Natural Science Foundation of China (31372316), AWPSTDYP (2015IB011) and the 111 Project (B16044). The authors thank the CJ CheilJedang Company (Seoul, Korea) for providing the valine and methionine used in the present study.

Keywords

  • milk components
  • performance
  • plasma amino acids
  • sow
  • valine : lysine ratio

Fingerprint Dive into the research topics of 'Effects of the standardized ileal digestible valine : lysine ratio on performance, milk composition and plasma indices of lactating sows'. Together they form a unique fingerprint.

Cite this