长白母猪妊娠天数的影响因素及效应分析  

Influencing Factors and Effect Analysis of Gestation Days of Landrace Sows

作　　者：张哲[1] 吴龙[1] 陈赞谋[1,2] 刘敬顺[2] 李娅兰[2] 王青来[2] 吴珍芳[1,2] 张豪[1] 

机构地区：[1]国家生猪种业工程技术研究中心,华南农业大学动物科学学院,广东广州510642 [2]广东温氏食品集团股份有限公司新兴种猪分公司,广东新兴527400

出　　处：《安徽农业科学》2014年第13期3920-3922,共3页Journal of Anhui Agricultural Sciences

基　　金：现代农业(生猪)产业技术体系建设专项(CARS-36);广东省现代农业产业技术体系建设专项

摘　　要：[目的]为养猪生产实践和科学管理决策提供参考依据。[方法]分析我国华南地区长白母猪妊娠天数的影响因素,并研究妊娠天数与其他繁殖性状的关系。[结果]胎次、分娩月份及年份对妊娠天数均有极显著影响。初产母猪的妊娠天数比经产母猪显著增长,低温季节分娩比高温季节有显著增长。妊娠天数近年来有显著缩短趋势(0.2 d/a)。妊娠天数与总产仔数、产活仔数、初生窝重、死胎数间呈极显著负相关,与木乃伊数及畸形数间无显著相关性。死胎率在妊娠116 d时最低。[结论]妊娠天数可作为养猪生产的间接指标。[Objective] The research aimed to provide reference basis for the production practice and scientific management and decisionmaking of swine industry.[Method] The influencing factors of gestation days of Landrace Pig in South China were analyzed.And the correlations between gestation days and other reproduction traits were studied.[Result] The gestation days was significantly influenced by fetal parity,delivery month and year.The gestation days of first-farrowing sow was significantly prolonged,and that in cold season was significantly prolonged than that in hot season.In recent years,the gestation days had a significantly shortening trend（0.2 d/a）.The gestation days had extremely significantly negative correlations with litter size,alive litter size,litter weight at birth and stillborn number,but it had no significant correlation with mummy and deformity.The stillbirth rate was the lowest after gestating 116 days.[Conclusion] The gestation days could be used as the indirect index in the swine industry.

关 键 词：妊娠天数 猪 繁殖性状 因子分析 

分 类 号：S857.2[农业科学—临床兽医学]