A systematic review and meta-analysis of dietary fat effects on reproductive performance of sows and growth performance of piglets

作     者：Lixue Wang Shuai Zhang Lee J.Johnston Crystal L.Levesque Jingdong Yin Bing Dong Lixue Wang;Shuai Zhang;Lee J.Johnston;Crystal L.Levesque;Jingdong Yin;Bing Dong

作者机构：State Key Laboratory of Animal NutritionCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China West Central Research and Outreach CenterUniversity of MinnesotaMorrisMN 56267USA Department of Animal ScienceCollege of Agriculture and Biological SciencesSouth Dakota State UniversityBrookingsSD 57007USA 

出 版 物：《Journal of Animal Science and Biotechnology》 (畜牧与生物技术杂志（英文版）)

年 卷 期：2022年第13卷第3期

页      面：662-681页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

基　　金：funded by The National Key Research and Development Program of China(2016YFD0700201) 

主　　题：Diets Fat Growth performance Piglets Reproductive performance Sows 

摘      要：Effects of added fat in sow diets on the sows’reproductive performance and offspring growth performance are influenced by multiple factors such as genetics,nutrition,parity,ambient temperatures,and farm *** studies cannot cover all these *** the view to address this challenge,we searched all studies that were published from 1986 to 2020,and performed a systematic review and meta-analysis on the fat *** total,19 papers were collected and *** supplementation in sow diets during late gestation and lactation decreased average daily feed intake(ADFI,P0.05)and tended to increase average daily energy intake(ADEI,P=0.11).It had no impact on litter weights at birth(P=0.40)or weaning(P=0.46).It increased total numbers of piglets at birth(P=0.07),but had no effect on liveborn per litter(P=0.90)or survival rate(P=0.48)of piglets to *** supplementation had no significant effect on sow body weight loss(P=0.67)or backfat thickness changes(P=0.66),but sows fed diets with added fat had increased milk fat concentration(P=0.03)and shorter wean to estrus intervals(WEI,P=0.01).In specific circumstances,fat supplementation tended to improve growth performance of piglets with low litter weights at birth(P=0.14),or when the sows lost large amounts of body weight during lactation(P=0.11).The level of supplemented fat was 10%and higher would decrease liveborn per litter at neutral temperature(P=0.10).The meta-analysis revealed that fat supplementation to sows diet during late gestation and lactation can be beneficial for sow reproductive performance and litter growth performance.