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pro vyhledávání: '"K. M. Napier"'
Autor:
L. P. Thatcher, K. M. Napier
Publikováno v:
Animal Science. 22:261-274
SUMMARYA technique is described for assessing the profitability of selecting sheep for wool production. A model of the breeding system incorporating three submodels is developed: one to represent the flock from which the selection intensities for ram
Autor:
P. D. Mullaney, K. M. Napier
Publikováno v:
Journal of reproduction and fertility. 39(2)
Sex ratios have been the subject of numerous investigations, particularly in studies with humans. In general, however, the literature relating to sex ratio in sheep is limited (Chapman & Lush, 1932; Henning, 1939; Rasmussen, 1940; Karam, 1957). Popul