Effects of initial mating age,weight and back fat on litter performance of French Landrace x Yorkshire gilts
Li Genlai
Lei Xiaoyong
Feng Weijie
Ren Shuang
Yu Jun
Shao Caimei
Abstract：The purpose of the experiment was to study the effect of initial mating age,weight and back fat on the litter performance of French Landrace x Yorkshire gilts.The basic data of 762 gilts from a pig farm of Wellhope Foods Co.,Ltd.were selected to analyze the relationship between different breeding age,body weight and backfat and first litter performance,so as to provide references for the improvement of breeding and reproductive performance of gilts.The results showed that 251～270 days of initial mating age could obtain the highest total litter size and live litter size.The highest total litter size and live litter size were obtained when the initial mating weight was 151～170 kg.The highest total litter size and live litter size were obtained when the initial backfat was 12～17 mm.The study indicates that different mating age,weight and backfat had significant impact on the first litter performance of farrowing sows.When the farrowing age was 251～270 days,the farrowing weight was 151～170 kg,and the farrowing backfat was 12～17 mm,French Landrace × Yorkshire gilts can achieve the best litter performance in their first litter.
Keywords：French Landrace × Yorkshire giltsInitial mating ageInitial weightInitial back fatLitter performance
Publication Date：2023-12-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 34-38 )