摘要
旨在研究不同胎次、产仔时长以及不同季节对荣昌母猪繁殖性能的影响,对国家级荣昌猪保种场682头荣昌猪的1802窝产仔数据进行分析。结果表明,2~8胎荣昌母猪产仔性能较佳,其中5胎具有最高的断奶仔猪(8.70±2.03)头;夏季高温对母猪的繁殖性能产生影响,其中断奶仔猪(7.64±2.24)头显著低于秋季(P<0.05),秋冬季节产仔数显著低于夏季产仔数(P<0.05);从相关性分析来看,产程过长容易造成死胎数的增加,同时母猪产仔初生重越大,健仔数越多,窝断奶仔猪数量也就越多。结果提示,对于猪场生产来说,2~8胎荣昌母猪繁殖性能优良,应尽量减少8胎以上荣昌母猪的存栏,若开展保种工作,可适量增加荣昌母猪的使用年限,延长世代间隔;可适量减少夏季高温季节配种及产仔工作的开展,同时做好妊娠期母猪的饲喂工作,获取更多的健仔数。
This study was to determine the effects of parities,duration of farrowing and seasons on the reproductive performance of Rongchang sows.The data of 1802 litters of 682 Rongchang sows in the national Rongchang pig breeding farm were analyzed,the results showed that Rongchang sows with 2-8 litters had better farrowing performance,and those with 5 litters had the highest number of weaned piglets(8.70±2.03).The high temperature in summer had an impact on the reproductive performance of the sows.Their number of weaned piglets(7.64±2.24)was significantly lower in summer than that in autumn(P<0.05),and their number of births in autumn and winter was significantly lower than that in summer(P<0.05).The correlation analysis revealed that too long duration of labor of sows tended to increase the number of stillborn fetuses.And the greater the birth weight in litter,the more healthy the piglets,and the greater the number of weaned piglets.The above results suggested that in pig farm production,Rongchang sows with 2-8 litters had excellent reproductive performance,and the number of the sows with more than 8 litters should be minimized.If breed conservation was to carry out,the service life of the sows might be appropriately prolonged.Implying appropriate reduction of breeding and farrowing in that hot season.Meanwhile,good feeding of sows during pregnancy was recommended in order to produce more healthy litters.
作者
柴捷
潘红梅
张廷焕
陈力
张亮
龙熙
王金勇
CHAI Jie;PAN Hongmei;ZHANG Tinghuan;CHEN Li;ZHANG Liang;LONG Xi;WANG Jinyong(Chongqing Academy of Animal Sciences,Chongqing 402460,China)
出处
《畜牧与兽医》
北大核心
2022年第3期16-20,共5页
Animal Husbandry & Veterinary Medicine
基金
国家重点研发计划项目(2017YFD501902)
国家现代农业产业技术体系资助
重庆市绩效激励引导专项(20520)。
关键词
荣昌猪
胎次
季节
产程
繁殖性能
Rongchang pigs
parity
season
farrowing
reproductive performance
