Kirby J D, Froman D P
Department of Poultry Science, Oregon State University, Corvallis 97331-3402.
Poult Sci. 1990 Oct;69(10):1764-8. doi: 10.3382/ps.0691764.
Single Comb White Leghorn (SCWL) hens were inseminated intravaginally with spermatozoa from either SCWL or subfertile Delaware roosters in three replicate fertility trials. Overall fertility was analyzed with a log odds model following logit transformation. Duration of fertility was analyzed by iterative least squares. Hens inseminated with spermatozoa from SCWL males laid a higher proportion of fertilized eggs over a longer interval than those inseminated with spermatozoa from affected Delawares. Log-odds and logistic models may have advantages over the more traditional methods of evaluation. This is particularly true in regard to the distribution and normalization of error variances via the logit transformation and removal of nonadditivity via logistic regression.
在三项重复的育性试验中，将单冠白来航鸡（SCWL）母鸡经阴道用来自SCWL或低育性特拉华公鸡的精子进行人工授精。采用对数几率模型对经对数转换后的总体育性进行分析。通过迭代最小二乘法分析育性持续时间。与用来自受影响的特拉华公鸡的精子进行人工授精的母鸡相比，用来自SCWL公鸡的精子进行人工授精的母鸡在更长的时间间隔内产下的受精卵比例更高。对数几率和逻辑模型可能比更传统的评估方法具有优势。通过对数转换使误差方差分布和归一化以及通过逻辑回归消除非可加性时尤其如此。
