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Isomaltooligosaccharide and Bacillus regulate the duration of farrowing and weaning-estrous interval in sows during the perinatal period by changing the gut microbiota of sows

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Animal Nutrition 2021年第1期7卷 72-83页

作者： Xueling Gu Jiang Chen Hao Li Zehe Song Ling Chang Xi He Zhiyong Fan Engineering Research Center for Feed Safety and Efﬁcient Utilization of Ministry of Education Institute of Animal NutritionHunan Agricultural UniversityHunan410128China Hunan Co-Innovation Center of Animal Production Safety Hunan Agricultural UniversityHunan410128China

This study investigated the effects of isomaltooligosaccharide(IMO)and Bacillus in perinatal diets on the duration of farrowing and post-weaning estrus,serum reproductive hormone concentrations,and gut microbiota and its metabolites of *** sows(n=130)were fed diets without IMO(control,CON group),or diets containing only IMO(IMO group),IMO and Bacillus subtilis(IMOS group),IMO and Bacillus licheniformis(IMOL group),and IMO and *** and ***(IMOSL group),*** results indicate that the duration of farrowing and post-weaning estrus was shorter in sows in the IMOS,IMOL,and IMOSL groups,and the weaning-estrous interval was lower in sows in the IMOL *** addition,the lowest fecal score was observed in the IMOL group during d 106 to 112 of *** in most of the treatment groups had a higher concentration of serum prolactin and prostaglandin at farrowing,but a lower serum concentration of estradiol,oxytocin,and progesterone on d 18 of lactation than sows in the CON *** treatment groups had a higher abundance of Candidatus Methanoplasma and Bacillus and a lower abundance of Escherichia-Shigella in their feces at ***,the treatment groups had higher concentrations of total short-chain fatty acids(SCFA)in feces at farrowing and a higher concentration of branched fatty acids in feces on d 18 of ***,the abun-dance of Bacillus in feces was positively correlated with serum prostaglandin concentrations and fecal total SCFA of sows at farrowing,but was negatively correlated with the duration of ***,dietary IMO and Bacillus supplementation affected the concentration of serum reproductive hormones and the duration of farrowing and post-weaning estrus,and the gut microbiota is a key factor.

关键词： Sow Isomaltooligosaccharide Bacillus Perinatal period duration of farrowing Gut microbiota

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