Distribution of weaning-to-oestrus intervals was evaluated within the selection and control line of a selection experiment on a short weaning-to-oestrus interval. Distributions of both lines could be described best by a mixture of a normal and an exponential distribution. Estimated density functions were almost identical over lines, but in the selection line more sows were in the normal distribution part.

ten J. Napel, A. G de Vries

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 319–322, 1994
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