| 后备母猪初情日龄对母猪繁殖性能及哺乳仔猪生长性能的影响 |
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| 引用本文： | 谢大识,李继仁,罗平华.后备母猪初情日龄对母猪繁殖性能及哺乳仔猪生长性能的影响[J].家畜生态学报,2020,41(7):47-51. |
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| 作者姓名： | 谢大识 李继仁 罗平华 |
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| 作者单位： | 娄底职业技术学院,湖南娄底417000;娄底职业技术学院,湖南娄底417000;娄底职业技术学院,湖南娄底417000 |
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| 摘 要： | 为了探讨后备母猪不同初情日龄对母猪繁殖性能和哺乳仔猪生长性能的影响,试验采用单因子设计方法,将738头后备母猪按照初情日龄的早晚分为4个处理组(初情日龄<200 d为Ⅰ组;200 d≤初情日龄<220 d为Ⅱ组;220 d≤初情日龄≤240 d为Ⅲ组;初情日龄>240 d为Ⅳ组),检测母猪第1胎、第2胎、第3胎及综合6胎的母猪产仔数、母猪产活仔数、仔猪初生均重、哺乳仔猪断奶均重、哺乳仔猪日均增重等指标。结果表明:(1)母猪头胎,Ⅱ组与Ⅰ组相比,母猪产活仔数、哺乳仔猪断奶均重、哺乳仔猪日均增重均显著提高(P<0.05);(2)母猪第2胎,Ⅱ组、Ⅲ组与Ⅰ组、Ⅳ组相比,母猪产仔数、母猪产活仔数均显著提高(P<0.05);(3)母猪第3胎,Ⅱ组与Ⅰ组、Ⅲ组、Ⅳ组相比,母猪产仔数、母猪产活仔数均显著提高(P<0.05);(4)母猪综合6胎,Ⅱ组与Ⅰ组、Ⅲ组、Ⅳ组相比,母猪产仔数、母猪产活仔数、哺乳仔猪日均增重均显著提高(P<0.05)。说明后备母猪初情日龄对母猪繁殖性能和哺乳仔猪生长性能存在显著影响,最佳初情日龄为200 d^220 d。
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| 关 键 词： | 后备母猪 初情日龄 繁殖性能 生长性能 |
Effects of Initial Estrus Age of Reserve Sows on Reproductive Performance of Sows and Growth Performance of Suckling Piglets |
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| XIE Dashi,LI Jiren,LUO Pinghua.Effects of Initial Estrus Age of Reserve Sows on Reproductive Performance of Sows and Growth Performance of Suckling Piglets[J].Acta Ecologae Animalis Domastici,2020,41(7):47-51. |
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| Authors: | XIE Dashi LI Jiren LUO Pinghua |
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| Institution: | (Loudi Vocational and Technical College,Loudi,Hunan,417000,China) |
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| Abstract: | In order to explore the effects of different initial estrus ages of reserve sows on reproductive performance and growth performance of suckling piglets,and to provide theoretical guidance for selecting and breeding reserve sows,the single-factor design method was used to divide 738 sows into 4 treatment groups according to the initial estrus ages(the initial estrus ages<200 days in groupⅠ;200 days≤the initial estrus ages<220 days in GroupⅡ;220 d≤the initial estrus ages≤240 d in groupⅢ;the initial estrus ages>240 days in groupⅣ),the reproductive performance and suckling performance of sows with the first,second,third and comprehensive 6 litters were compared and analyzed by testing the number of sows,live piglets,average birth weight,weaning weight of suckling piglets and average daily gain of suckling piglets.The results showed that:(1)for the first parity of sows,the number of sows,live piglets,weaning average weight of suckling piglets and daily weight gain of suckling piglets in groupⅡwere significantly higher than those in groupⅠ(P<0.05).(2)for the second parity of sows,the litter size and live piglets in groupⅡandⅢwere significantly in creased than that in groupⅠandⅣ(P<0.05);(3)for the third parity,Citter size and live piglets in groupⅡwere significantly increased than thatin groupⅠ,ⅢandⅣ(P<0.05);(4)for comprehensive 6 parity,the litter size,live piglets and daily weight gain of piglets in groupⅡwere significantly improved than that in groupⅠ,ⅢandⅣ(P<0.05).The results showed that the initial estrus age of reserve sows had significant effects on the reproductive performance of sows and the growth performance of suckling piglets.The optimal initial estrus age was 200~220 days. |
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| Keywords: | reserve sows age at first estrus reproductive performance growth performance |
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