In an experimental breed of grey Landes goose, reproduction traits in the first laying cycle under artificial photoperiod (9 h light/day) were recorded on 745 females of 2 lines. A total of 1 475 related males and females goslings were reared and overfed during 14 days to produce fatty liver. The average number of eggs per goose was 67 but only 22 hatched goslings. The overfed animals had an average fatty liver weight of 655 g and a "paletot" weight of 3 123 g. The reproduction traits had moderate to high heritability values (between 0.25 and 0.80), so they could also be more increased by selection. Fatty liver weight showed a high heritability (h2=0.58). There was no unfavourable genetic relationship between number of eggs or goslings and fatty liver weight (rg=0.18 and 0.11 respectively).

M. M Richard, C. Marie-Etancelin, F. Dubos, M. D Bernadet, G. Guy, J. M Brun

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 07.25, 2006
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