湖南农业大学学报（自然科学版）2024，Vol.50Issue(5)：92-97,6.DOI:10.13331/j.cnki.jhau.2024.05.013
初情期和初配日龄对丹系大白母猪头胎繁殖性能的影响
The effect of age at puberty and age at first mating on reproductive performance of first parity Yorkshire sows
摘要
Abstract
Datas of 515 Yorkshire sows including age at puberty and age at first mating as well as reproductive performance including total number born(TNB),number born alive(NBA),number healthy piglets(NHP),number born weak(NBW),number born stillbirths(NBS),number born mummies(NBM),number born deformities(NBD)and litter birth weight(LBW)were collected.These datas were grouped according to age at puberty(≤180 d,181-200 d,201-220 d,≥221 d)and age at first mating(≤240 d,241-270 d,≥271 d)to comparatively analyze the reproductive performance of sows with first parity in different groups.The results showed that the TNB,NBA,NHP,and LBW of sows with age at puberty≤180 d were significantly better than those of other sows.Sows with age at puberty ranging from 201-220 d showed the lowest reproductive performance.The reproductive performance of sows with age at first mating≤240 d is significantly better than that of sows with other mating times.The correlation coefficient between age at puberty and the age at first mating was 0.77(P<0.001),with regression model Y=0.66X+104.48,where X is age at puberty and Y is age at first mating,and the calculated coefficient of determination R2 was 0.592.The traits of first parity indicated Yorkshire sows with early estrus showed good reproductive performance,and the sows showed good reproductive performance at the first parity when the initial mating age is between 210-240 days.In actual production,the information of puberty can be used to make plans for the first mating of sows and improve the production efficiency.关键词
丹系大白母猪/初情期/初配日龄/头胎繁殖性能Key words
Yorkshire sows/age at puberty/age at first mating/reproductive performance of first parity分类
农业科技引用本文复制引用
郭海民,鲍恒,殷诗舒,许拓,唐彤,袁金锋,何俊..初情期和初配日龄对丹系大白母猪头胎繁殖性能的影响[J].湖南农业大学学报（自然科学版）,2024,50(5):92-97,6.基金项目
湖南省科技人才托举工程中青年学者培养计划(2022TJ-Q15) （2022TJ-Q15）
湖南省创新型省份建设专项(2021NK1009) （2021NK1009）
