HÉRÉDITÉ DES PENDELOQUES EN RACE SAANEN. DIFFÉRENCES DE FÉCONDITÉ ENTRE LES GÉNOTYPES AVEC ET SANS PENDELOQUES

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Abstract
Lush''s hypothesis of a simple dominant gene for the presence of wattles was substantiated with 435 Saanen mother-progeny pairs. The frequency of the no-wattle gene (qw) was estimated 0.810 in Saanen goats (n = 736), 0.718 in Poitevine goats (n = 709) and 0.638 in Alpine goats. Fertility rates (born kids per cent kiddings) of wattled and not wattled horned goats are different. Fertility rate of wattled goats was on average 13% superior. The difference can reach 26% between polled goats with wattles (double heterozygotes in majority) and horned goats without wattles (double homozygotes). It is greater in good herds (14.2% in 195% fertile herds, versus 3.9% in less fertile herds). This investigation was carried out on 736 kiddings (103 in the progeny - testing station and 633 in farms). The systematic record of wattles characteristics should allow partly to control mating declarations and mostly to distinguish homozygotes among wattles goats.

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