摘要
选择胎次相近的长大（长白猪×大约克）母猪１０６头分成试验组（６０头）和对照组（４６头）。试验组于妊娠１１２ｄ注射律胎素２ｍＬ／只，对照组同期注射灭菌生理盐水。结果试验组白天分娩比例达９０．００％（对照组为５４．３３％），从注射律胎素到开始分娩的时间平均为３１．７５ｈ（对照组为８９．３６ｈ），最后一胎儿被娩出到胎衣排出的时间平均为２．５６ｈ（对照组为３．６２ｈ），发情距断乳时间平均为４．２９ｄ（对照组为５．５３ｄ），差异均达到极显著或显著水平；而产程、分娩即时活仔数与总产仔数之比以及初生仔平均体重，两组间差异不显著。分别从两组随机取两头作相对密集（每３ｈ一次）采血，监测孕酮、雌二醇浓度的动态变化。结果两组激素的变动规律十分相似，验证了律胎素的临床效果。
One hundred and six LandraceLarge White sows with
approximate parity were divided into the experiment group of 60 sows and the control group of
46 ones.At 7:00 on 112 d of pregancy each sow was injected with 2 mL Lutalyse in experiment
group and sterilized physiological saline in control group. The results were as follows:in the
daytime,parturition proportion of experimental and control sows were 9000% and 5433%
respectively.The average time from injection to starting parturition was 3175 h and 8936 h,from
last fetal delivered to placenta expulsion was 256 h and 362 h respectively for the experiment
group and the control one. The period between weaning and the first estrus was 429 d for the
experiment group but 553 d for the control one. All these showed the difference at 005 and 001
levels between the two groups, while no difference was found in parturition process,rate of alive
and the birth weight.Blood samples of 2 experimental sows and 2 control sows were taken
3hour intervals from injection to parturition completed to determine progesterone and estradiol
concentration.The results showed that the changes of the two hormones in both groups were
very similar and Lutalyse had a good result in induced parturition.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1999年第2期90-93,共4页
Journal of Nanjing Agricultural University
关键词
律胎素
妊娠母猪
分娩控制
母猪
分娩
Lutalyse
pregnant
sow
parturition control
progesterone
estradiol
