母猪繁殖性能和断奶至再发情间距的影响因素分析
发布时间：2019-02-16 14:48
【摘要】：母猪的繁殖性能是衡量养猪企业生产水平重要指标,母猪的繁殖性能关系着企业的经济效益。本研究对广东省某猪场长白母猪、大白母猪、杜洛克母猪共4054窝的生产记录进行研究和分析,对总产仔数、活仔数、死胎、木乃伊、初生窝重、断奶数共6个繁殖性状进行统计,采用方差分析方法分析了品种、季节、胎次对母猪繁殖性能的影响。结果显示:不同品种母猪的总产仔数、活仔数、断奶数、初生窝重、死胎数的影响差异性显著(p0.05),木乃伊胎数影响差异不显著(p0.05),总产仔数、活仔数、断奶数最多的是大白母猪,最少的是杜洛克母猪;季节对母猪总产仔数、活仔数、初生窝重、断奶数、死胎和木乃伊差异性显著(p0.05),春季总产仔数、活仔数、断奶最多,初生窝重最重重;死胎和木乃伊胎最多的季节是夏季;母猪总产仔数、活仔数、初生窝重、死胎以及断奶数胎次影响存在显著的差异(p0.05),而对产木乃伊影响不显著(p0.05)。研究结果有利于改进猪场的管理,提高母猪生产力,使母猪为猪场提供更多的更健康的仔猪,达到减少母猪饲养的成本和创收的目标。母猪非生产天数作为猪场的有效管理指标之一,母猪断奶至再发情间距是母猪非生产天数的重要组成部分,必须引起养猪企业经营管理者的高度重视。本研究还对该场长白母猪、大白母猪、杜洛克母猪共2567条断奶至再发情间距记录进行统计分析,采用方差分析方法分析了品种、季节、胎次对母猪奶至再发情间距的影响。结果显示:不同品种母猪的断奶至再发情间距差异性显著(p0.05),杜洛克的母猪奶至再发情间距最长,长白与大白猪差异不显著(p0.05);季节也对母猪断奶至再发情间距有影响,春季母猪断奶至再发情间距比其他三个季节的短1天以上,与其他三个季节的存在显著差异,冬季母猪断奶至再发情间距最长;胎次对母猪断奶至再发情间距差异显著(p0.05),母猪断奶至再发情间距最长的是第一胎为10.72天,最短的是第七胎为7天。该结果有助于养猪企业缩短母猪断奶至再发情间距,使母猪年生产的胎数增加,进而使母猪为猪场增收。
[Abstract]:The reproductive performance of sows is an important index to measure the production level of pig raising enterprises, and the reproductive performance of sows is related to the economic benefits of enterprises. In this study, 4054 litter records of Landrace sows, large white sows and Duroc sows at a pig farm in Guangdong Province were studied and analyzed. The total litter size, live litter size, stillbirth, mummy, birth weight were analyzed. The influence of varieties, seasons and parity on the reproductive performance of sows was analyzed by means of variance analysis (ANOVA). The results showed that the total litter size, live litter size, weaning number, newborn litter weight, stillbirth number of different breeds of sows were significantly different (p0.05), while the number of mummies had no significant difference (p0.05). The largest weaning is the big white sows, the least is the Duroc sows; There were significant differences in total litter size, live litter size, newborn litter weight, weaning number, stillbirth and mummy (p0.05). There were significant differences in total litter size, live litter size, newborn litter weight, stillbirth and weaning number (p0.05), but no significant effect on mummification (p0.05). The results are beneficial to improve the management of pig farm, improve the productivity of sows, make sows provide more healthy piglets for the farm, and achieve the goal of reducing the cost of sows raising and generating income. The days of sows' non-production as one of the effective management indexes of pig farms, the interval between weaning and reestrus is an important part of the days of sows' non-production, which must be attached great importance to by the managers of pig raising enterprises. In this study, 2567 records of interval between weaning and reestrus in Landrace sows, big white sows and Duroc sows were statistically analyzed. The effects of breeds, seasons and parity on the interval between milk and reestrus of sows were analyzed by means of variance analysis. The results showed that the distance between weaning and reestrus was significant (p0.05) in different breeds of sows, and the interval between weaning and reestrus was the longest in Duroc sows, but there was no significant difference between Landrace and large white pigs (p0.05). The interval between weaning and reestrus in spring sows was more than one day shorter than that in the other three seasons, which was significantly different from the other three seasons, and the interval between weaning and reestrus in winter was the longest. The interval between weaning and reestrus of sows was significantly different (p0.05). The longest interval between weaning and reestrus in sows was 10.72 days for the first and the 7 days for the seventh. The results are helpful to shorten the interval between weaning and reestrus of sows, increase the annual production of sows and increase the income of sows for pig farms.
【学位授予单位】：华南农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：S828
本文编号：2424553
[Abstract]:The reproductive performance of sows is an important index to measure the production level of pig raising enterprises, and the reproductive performance of sows is related to the economic benefits of enterprises. In this study, 4054 litter records of Landrace sows, large white sows and Duroc sows at a pig farm in Guangdong Province were studied and analyzed. The total litter size, live litter size, stillbirth, mummy, birth weight were analyzed. The influence of varieties, seasons and parity on the reproductive performance of sows was analyzed by means of variance analysis (ANOVA). The results showed that the total litter size, live litter size, weaning number, newborn litter weight, stillbirth number of different breeds of sows were significantly different (p0.05), while the number of mummies had no significant difference (p0.05). The largest weaning is the big white sows, the least is the Duroc sows; There were significant differences in total litter size, live litter size, newborn litter weight, weaning number, stillbirth and mummy (p0.05). There were significant differences in total litter size, live litter size, newborn litter weight, stillbirth and weaning number (p0.05), but no significant effect on mummification (p0.05). The results are beneficial to improve the management of pig farm, improve the productivity of sows, make sows provide more healthy piglets for the farm, and achieve the goal of reducing the cost of sows raising and generating income. The days of sows' non-production as one of the effective management indexes of pig farms, the interval between weaning and reestrus is an important part of the days of sows' non-production, which must be attached great importance to by the managers of pig raising enterprises. In this study, 2567 records of interval between weaning and reestrus in Landrace sows, big white sows and Duroc sows were statistically analyzed. The effects of breeds, seasons and parity on the interval between milk and reestrus of sows were analyzed by means of variance analysis. The results showed that the distance between weaning and reestrus was significant (p0.05) in different breeds of sows, and the interval between weaning and reestrus was the longest in Duroc sows, but there was no significant difference between Landrace and large white pigs (p0.05). The interval between weaning and reestrus in spring sows was more than one day shorter than that in the other three seasons, which was significantly different from the other three seasons, and the interval between weaning and reestrus in winter was the longest. The interval between weaning and reestrus of sows was significantly different (p0.05). The longest interval between weaning and reestrus in sows was 10.72 days for the first and the 7 days for the seventh. The results are helpful to shorten the interval between weaning and reestrus of sows, increase the annual production of sows and increase the income of sows for pig farms.
【学位授予单位】：华南农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：S828
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