Genetic relationship between days open and days dry with milk yield in a herd of Holstein Friesian cattle
Makaleler > Tam Makale · 2000
Yazarlar: Hülya ATIL
ARCHIV FUR TIERZUCHT-ARCHIVES OF ANIMAL BREEDING, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2000, cilt 43, ss 583-590
Özet
A total of 2897 lactation records of Holstein Friesian cattle from the fields of Dena Farm in Egypt from 1987 to 1993 were used to study relationships of days open and days dry with milk production. The effect of month and year of calving, sire and cow within sires were also investigated.