首页> 外文期刊>Journal of Dairy Science >Genetics and breeding: Comparison of Test Interval and Best Prediction Methods For Estimation of Lactation Yield from Monthly, a.m.-p.m., and Trimonthly Testing
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Genetics and breeding: Comparison of Test Interval and Best Prediction Methods For Estimation of Lactation Yield from Monthly, a.m.-p.m., and Trimonthly Testing

机译:遗传学和育种:比较试验间隔和最佳预测方法以从每月一次,上午到下午和每三个月一次的测试中估算泌乳量

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摘要

A method with best prediction properties that con- denses information from all test days into measures of lactation yield and persistency has been proposed as a possible replacement for the test interval method and projection factor. The proposed method uses previously established correlations between in- dividual test days and includes inversion of a matrix for each lactation. Milk weights that were representa- tive of monthly, a.m.-p.m., and trimonthly test plans were examined to compare the accuracy of best prediction and test interval methods for estimating lactation yield.
机译:已经提出了一种具有最佳预测性能的方法,该方法可以将所有测试日的信息整合为泌乳量和持久性的度量,可以替代测试间隔法和预测因子。所提出的方法使用先前在各个测试日之间建立的相关性,并且包括每次泌乳时矩阵的倒置。对代表每月,上午和下午三个月的测试计划的牛奶重量进行了检查,以比较最佳预测和测试间隔法估算泌乳量的准确性。

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