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Autor:
J.P.T.M. Noordhuizen, L.A. van Wuyckhuise, E. Perez, J.O. Goelema, E.N. Stassen, C.J.M. Westenbroek
Publikováno v:
Veterinary Quarterly, 13, 180-184
Veterinary Quarterly 13 (1991)
Veterinary Quarterly 13 (1991)
Summary Calf‐cow records from 1081 replacement heifers raised on 42 specialised rearing farms in the province of Noord‐Brabant have been analysed. The predominant breed was Meuse‐Rhine‐Yssel (MRY). The objective was to study the relationship