繁殖期背膘及其变化对后备母猪繁殖性能的影响
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- 英文论文题名：The Effect of Gilts Backfat and Its Changes in Breeding Stage on Reproductive Performance
- 论文作者：张涛 ; 陈志林 ; 陈预明 ; 张童 ; 卫恒习 ; 李莉 ; 张守全
- 英文论文作者：Tao Zhang ; Zhilin Chen ; Yuming Chen ; Tong Zhang ; Hengxi Wei ; Li Li ; Shouquan Zhang ; College of Animal Science ; South China Agricultural University ; Shenzhen Shunran Fodder Limited Company ; Guangdong WENS Enping Branch Company ; Guangdong Guangsanbao Pig Industry Limited Company
- 年：2016
- 作者机构：华南农业大学动物科学学院;深圳市顺然饲料有限公司;广东温氏食品集团开平市温氏畜牧有限公司恩平分公司;广东广三保养猪有限公司;
- 论文关键词：后备母猪 ; 背膘 ; 繁殖性能
- 英文论文关键词：Gilts ; Backfat ; Reproductive performance
- 会议召开时间：2016-06-14
- 会议录名称：第25届广东省科技进步活动月畜牧兽医学术与科技创新发展大会论文集
- 语种：中文
- 分类号：S828
- 学会代码：GDKL
- 会议名称：第25届广东省科技进步活动月畜牧兽医学术与科技创新发展大会
- 会议地点：中国广东广州
- 主办单位：广东省畜牧兽医学会
- 学会名称：广东省科学技术协会科技交流部
- 页数：8
- 文件大小：558k
- 原文格式：O
- 会议级别：地方
摘要
以配种时、妊娠第30天、妊娠第60天、妊娠第90天、妊娠第110天和断奶时等繁殖期为研究阶段,运用B型超声仪测定7.5月龄以上大白后备母猪及其对应的二胎的第10-11根肋骨间自背中线向两侧6.5cm处背膘,以探索繁殖期背膘水平和背膘变化与繁殖性能的关系。试验结果表明,后备母猪配种时背膘大于15.0mm时当胎分娩率极显著提高(P<0.01),妊娠第110天背膘为18.40mm时窝产总仔数最大,为10.80头,妊娠期内背膘增加小于3.5 mm时当胎窝产总仔数和窝产活仔数极显著提高(P<0.01),哺乳期背膘损失小于3.0 mm时其对应的二胎总分娩率显著提高(P<0.05)。因此,控制后备母猪妊娠期内背膘增加在3.5 mm以内、临产前背膘在18.40mm左右以及当胎哺乳期背膘损失在3.0 mm以内有利于提高当胎及其二胎的繁殖生能。
When the 7.5 months or more Yorkshire gilts and the corresponding second parity sows respectively were in mating,pregnancy 30 th days,pregnancy 60 th days,pregnancy 90 th days,pregnancy 110 th days and weaning,the B type ultrasound was used to measure the backfat of the 10-11 rib between back from the middle to both sides for studying the relationship between the breeding stage backfat levels and gilts reproductive performance.This study results had the following:first of all,with the first mating backfat less than 15.0mm,the farrowing rate increased very significantly(P<0.01);secondly,when the backfat of pregnancy 110 th days was at18.40 mm,the total litter size was highest,10.80 head;thirdly,once the backfat increased less than 3.5 mm duringpregnancy,the total litter size and the number of born alive were very significantly increased(P<0.01);fourthly,when the first parity backfat lost less than 3.0 mm duringlactation,the second parity farrowing was significantly increased(P<0.05).Above,it is necessary to control the backfat that includes increasing less than3.5 mm duringpregnancy andlosing less than 3.0 mm duringfirst parity lactation and keeping at around 18.40 mm before delivery for improving the reproductive performance of the Yorkshire gilts and the second parity sows.
When the 7.5 months or more Yorkshire gilts and the corresponding second parity sows respectively were in mating,pregnancy 30 th days,pregnancy 60 th days,pregnancy 90 th days,pregnancy 110 th days and weaning,the B type ultrasound was used to measure the backfat of the 10-11 rib between back from the middle to both sides for studying the relationship between the breeding stage backfat levels and gilts reproductive performance.This study results had the following:first of all,with the first mating backfat less than 15.0mm,the farrowing rate increased very significantly(P<0.01);secondly,when the backfat of pregnancy 110 th days was at18.40 mm,the total litter size was highest,10.80 head;thirdly,once the backfat increased less than 3.5 mm duringpregnancy,the total litter size and the number of born alive were very significantly increased(P<0.01);fourthly,when the first parity backfat lost less than 3.0 mm duringlactation,the second parity farrowing was significantly increased(P<0.05).Above,it is necessary to control the backfat that includes increasing less than3.5 mm duringpregnancy andlosing less than 3.0 mm duringfirst parity lactation and keeping at around 18.40 mm before delivery for improving the reproductive performance of the Yorkshire gilts and the second parity sows.
引文
本文发表于《养猪》2015年第5期P33-37。