Genetic relationship between days open and days dry with milk yield in a herd of Holstein Friesian cattle
Articles > Article · 2000
Authors: Hülya ATIL
ARCHIV FUR TIERZUCHT-ARCHIVES OF ANIMAL BREEDING, Journal Indexed in SCI Expanded, International, 2000, vol 43, pp 583-590
Summary
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.