Starch supplementation improves the reproductive performance of sows in different glucose tolerance status

• 作者: Yunyu Yang Ming Deng Jianzhao Chen Xichen Zhao Kaili Xiao Wenliang He Xinggang Qiu Yanzhen Xu Yulong Yin Chengquan Tan
• 来源期刊: 动物营养（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: SWINE NUTRITION
• 页码范围: 1231-1241
• 页数: 11页
• 语种: 英文

摘要

This study was to evaluate the effects of glucose tolerance status,maternal starch supplementation and soybean substitution in diets on the performance of dams and their offspring.Eighty-eight pregnant sows (Landrace × Large White) were selected from an initial total of 120 sows,based on blood glucose test values,and assigned to 4 experimental treatments in a 2 × 2 factorial design.The factors were glucose tolerance status (glucose intolerant[GIT]vs.normal glucose tolerant[NGT]) or dietary treat-ments (corn starch diet[CS]vs.soybean substitution diet[SS]).A higher area under the curve (AUC) for post-meal glucose was observed (P ＜ 0.05) in the GIT group than in the NGT group on d 109 of gestation.The CS group had a lower value of homeostasis model assessment-insulin resistance than the SS group(P ＜ 0.05) on d 109 of gestation.Corn starch supplementation for sows decreased the stillbirth rate(P ＜ 0.05),regardless of the sows' glucose tolerance status.The villus height of the jejunum and the villus height to crypt depth ratio of the ileum were greater in normal birth weight piglets from the CS group than from the SS group (P ＜ 0.01),and so was the activity of sucrase in the jejunum and ileum (P ＜ 0.01).Compared with the SS group,the CS group showed a reduction in pre-weaning mortality rate,an in-crease in the number of high-birth-weight piglets,and a decrease in the number of low-birth-weight piglets (P ＜ 0.05) under GIT status.In conclusion,sows fed CS decreased stillbirth rate and improved insulin resistance,as well as improving the intestinal morphology and digestive enzyme activities of their progeny,regardless of glucose tolerance status.Additionally,the CS group improved birth weight distribution and decreased pre-weaning mortality rate of piglets under GIT status.