GENETIC AND PHYNOTYPIC CORRELATIONS OF AGE AT FIRST CALVING WITH SOME CALF-HOOD FITNESS AND HEALTH TRAITS IN HOLSTEIN HEIFERS

GENETIC AND PHENOTYPIC TRENDS OF CALVING INTERVAL AND AGE AT FIRST CALVING IN A COMMERCIAL HOLSTEIN HERD

BODY CONDITION SCORE AND SEASON OF CALVING EFFECTS ON PHYSIOLOGICAL PARAMETERS, PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF FRIESIAN COWS

Effect of Calving season and Parity on the Productivity and Profitability of Holstein Friesian Dairy Farms

Inter-relationships Between Age at First Calving and Production During First Lactation of Imported Friesian Cattle and their Locally Born Daughters

GENETIC AND PHENOTYPIC RELATIONSHIPS AMONG FIRST LACTATION TRAITS AND SOME LONGEVITY AND LIFETIME TRAITS IN FRIESIAN CATTLE.

Genetic and Phenotypic Associations of Milk Traits with Age at Calving and with Length of Open Period, Dry Period and Lactation

EFFECT OF PARITY SEASON AND STAGE OF LACTATION ON SOMATIC CELL COUNT MILK YIELD AND QUALITY OF FRIESIAN COWS

Effect of Month of Calving, on Some Reproductive Traits in Friesian Cows under Egyptian Environmental Conditions. Intervals Parturition to : Estrus, Service and Conception and Ge

Effect of Season and Month of Calving on Estrous Performance Services Conception and Milk Yield of Friesian Cows in Egypt