批次化生产技术对母猪繁殖性能的影响及其因素研究

Study on the effect of batch production technology on reproductive performance of sows and its factors

为了研究批次化生产技术对经产母猪繁殖性能的影响和对其实施的影响因素,试验将2~10胎次的经产母猪平均分为两组,试验组进行批次化生产管理,对照组进行传统连续生产,并对两组母猪的妊娠期、配种分娩指标(发情率、受胎率、分娩率、空胎率、流产率)及繁殖性能指标(窝总产仔数、窝健仔数、窝弱仔数、窝畸形数、窝死胎数、窝木乃伊胎数、窝断奶仔猪数)进行比较,分析胎次和季节因素对批次化生产技术的影响。结果表明:实施批次化管理后,试验组和对照组母猪的妊娠期、空胎率、流产率无显著差异(P>0.05),试验组的发情率、受胎率和分娩率显著高于对照组(P<0.05);两组母猪的窝总产仔数、窝健仔数、窝畸形数、窝死胎数、窝木乃伊胎数、窝断奶仔猪数无显著差异(P>0.05),试验组的窝弱仔数显著低于对照组(P<0.05);第9,10胎次母猪的窝总产仔数显著低于其他胎次母猪(P<0.05),同时第9胎次母猪的窝健仔数和窝弱仔数显著降低(P<0.05),其他指标在胎次上无显著差异(P>0.05);秋季的窝总产仔数显著低于春季,且冬季的窝畸形数显著高于夏季和秋季(P<0.05),其他指标在季节上无显著差异(P>0.05)。说明在规模猪场第2~8胎次的经产母猪中应用批次化生产技术,并保持温度和光照条件的稳定,能够显著提高母猪的繁殖性能和实现产能的最大化,该技术适合在规模化猪场进行应用推广。

In order to study the effect of batch production technology on reproductive performance of multiparous sows and the influencing factors of its implementation.In this experiment,sows from 2 to 10 parities were divided into two groups.The experimental group received batch production management,while the control group received traditional continuous production.And the two set of sows’gestation period,childbirth mating delivery index(estrus rate,conception rate,delivery rate,empty fetus rate and abortion rate)and reproductive performance index(total litter size and litter healthy number,litter scrawny piglet number,healthy and scrawny piglet number,litter still birth number,litter mummy number,litter weaning piglets number)were comparied,analysis of tire time and seasonal factors impact on batches of production technology was analyzed.The results showed as follows:after batch management,there were no significant differences in gestation period,empty fetus rate and abortion rate between test group and control group(P>0.05).The estrus rate,conception rate and delivery rate of test group were significantly higher than those of control group(P<0.05).There were no significant differences in total litter size,litter healthy number,litter malformation number,litter stillbirth number,litter mummy number and litter weaning piglets number between the two groups(P>0.05).The litter number of scrawny piglet in experimental group was significantly lower than that in control group(P<0.05).The total litter size of sows at 9 and 10 parities was significantly lower than that of sows at other parities(P<0.05),while the litter healthy and scrawny piglet number of sows at 9 parities was significantly lower than that of sows at other parities(P<0.05),while there was no significant difference in other indexes about parity(P>0.05).The total litter number in autumn was significantly lower than that in spring,and the litter malformation number in winter was significantly higher than that in summer and autumn(P<0.05),but there were no significant differences in other indexes(P>0.05).The results indicated that the application of batch production technology in the 2 nd to 8 th parities of sows in large-scale pig farms,and keeping the temperature and light conditions stable,could significantly improve the reproductive performance of sows and achieve the maximum productivity,and this technology is suitable for large-scale pig farms to be applied and popularized.