Estimation of Repeatability and the Most Probable Producing Ability (MPPA) Based on Birth Weight and Weaning Weight for Ranking of Sapudi Sheep

A. Mirella, M. Mudawamah, S. Sumartono
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Abstract

This study was conducted to estimate the repeatability and MPPA values of Sapudi ewe based on birth weight and weaning weight. Samples used 93 Sapudi lambs from 26 ewes that lambed three times, and the observed variables were lambing weight and weaning weight. Collected data were analyzed quantitatively. Estimating repeatability by analyzing the variance of the relationship between sibling and the parental rank was based on the relative MPPA formula..  The results showed that the average lambing and weaning weights were 2.789±0.206 kg and 10.058±1.470 kg. The repeatability of lambing and weaning weight were 0.108±0.119, and 0.565±0.104 belonged to the low and high categories. The average MPPA of lambing and weaning weight were 0.001 and 0.087. MPPA values of lambing and weaning weight range from -0.087 to 0.075 and -1.721 to 2.713. The highest ranking of the Sapudi ewe in lambing and weaning weight is ear tag 103 and ear tag 27 with MPPA 0.075 and 2.713. It can be concluded that there were 11 ewes with MPPA lambing and weaning weight above the average MPPA population that should be maintained in the population.  
基于出生重和断奶重的萨普地羊排名重复性和最可能生产能力(MPPA)估算
本研究旨在根据出生体重和断奶体重来估计Sapudi母羊的重复性和MPPA值。样本使用了来自26只母羊的93只Sapudi羔羊,这些母羊曾三次产羔,观察到的变量是产羔重量和断奶重量。对收集的数据进行了定量分析。通过分析兄弟姐妹和父母等级之间关系的方差来估计可重复性是基于相对MPPA公式。。结果表明,平均产羔和断奶重分别为2.789±0.206kg和10.058±1.470kg,产羔和断乳重的重复性分别为0.108±0.119和0.565±0.104。产羔和断奶体重的平均MPPA分别为0.001和0.087。产羔和断奶体重的MPPA值在-0.087-0.075和-1.721-2.713之间。Sapudi母羊在产羔和断奶体重方面排名最高的是耳标103和耳标27,MPPA分别为0.075和2.713。可以得出的结论是,有11只母羊的MPPA产羔和断奶体重高于应保持在群体中的平均MPPA群体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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12 weeks
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