母猪乳头数及哺乳位置等对哺乳仔猪早期日增重的影响

发布时间：2019-02-19 11:50

【摘要】：为了解母猪乳头数、仔猪哺乳位置(前、中、后)、性别和初生重等因素对哺乳仔猪早期日增重的影响,本研究选取了预产期、胎次相近的沙乌头、杜×沙、长×大母猪各5头以及它们产后的哺乳仔猪,记录母猪左右两侧乳头数并将乳头分为前、中、后区。同时记录仔猪哺乳位置,初生重(1日龄)、3日龄、6日龄、9日龄体重。结果表明:不同品种或杂交组合母猪乳头数有显著差异;不同性别仔猪初生重无显著差异,性别对仔猪1~9日龄日增重的影响也不显著;不同哺乳位置间仔猪初生重无显著差异,但仔猪日增重与其初生重显著相关;哺乳位置对沙乌头母猪所产仔猪1~9日龄日增重影响不显著,但是对杜沙和长大母猪所产仔猪3-9日龄日增重有显著影响。
[Abstract]:In order to understand the effects of the factors such as nipple number, lactation position (pre, middle, posterior), sex and birth weight on the early daily gain of suckling piglets, the early daily gain of suckling piglets was studied. The numbers of the left and right nipples of the sows were recorded and the nipples were divided into the anterior, middle and posterior regions in 5 long 脳 big sows and their postpartum suckling piglets. At the same time, the breast-feeding position, birth weight (1 day old), 3 days old, 6 days old and 9 days old weight of piglets were recorded. The results showed that there were significant differences in nipple number among different breeds or crossbred sows, there was no significant difference in birth weight of piglets of different genders, and there was no significant effect of sex on daily gain of piglets at the age of 1g / 9 days. There was no significant difference in birth weight among piglets in different lactation positions, but there was a significant correlation between daily gain and birth weight of piglets. The effect of lactation position on the daily gain of piglets at 1 and 9 days of age was not significant, but it had a significant effect on the daily gain of piglets of Dusa and large sows at 3-9 days old.
【作者单位】：南京农业大学动物科技学院;江苏兴旺农牧科技发展有限公司;
【基金】：江苏省农业科技自主创新项目(CX(15)1006) 江苏省科技支撑计划(BE2014396) 江苏省自然科学基金(BK20140688) 江苏省农业三新工程项目(SXGC[2015]319,SXGC[2016]275)
【分类号】：S828

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