Genetic relationship between days open and days dry with milk yield in a herd of Holstein Friesian cattle


Atil H.

ARCHIV FUR TIERZUCHT-ARCHIVES OF ANIMAL BREEDING, cilt.43, ss.583-590, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 43 Konu: 6
  • Basım Tarihi: 2000
  • Dergi Adı: ARCHIV FUR TIERZUCHT-ARCHIVES OF ANIMAL BREEDING
  • Sayfa Sayıları: 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.