THE IMPACT OF AGE AT FIRST CALVING ON PRODUCTIVITY AND PROFITABILITY IN FRIESIAN COWS UNDER EGYPTIAN CONDITIONS

Heifer Fertility Relationship with First Lactation Cow Traits of Friesian Dairy Cattle in Egypt

Effect of dry period length on reproduction, health and milk production in the subsequent lactation of Holstein cows

EFFECT OF AGE AT FIRST CALVING AND FIRST LACTATION MILK YIELD ON PRODUCTIVE LIFE TRAITS OF SYRIAN SHAMI 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

EXPECTED IMPACT OF SELECTION FOR MILK YIELD ON REPRODUCTIVE PERFORMANCE TRAITS IN HOLSTEIN FRIESIAN COWS UNDER EGYPTIAN CONDITIONS

EFFECT OF CALVING SEASON, PARITY AND AGE AT FIRST CALVING ON PERFORMANCE TRAITS AND PHENOTYPIC CORRELATIONS BETWEEN THESE TRAITS IN HOLSTEIN FRIESIAN COWS

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

The effect of age and weight at first calving on the productive and reproductive performance of Primiparous buffaloes

EFFECT OF DAILY WEIGHT GAIN ON AGE AT FIRST CALVING AND SUBSEQUENT MILK YIELD OF HOLSTEIN HEIFERS IN EGYPT