THE GENETIC AND PHENOTYPIC EFFECTS OF DAYS OPEN AND DRY PERIOD 0N 305-DAY3 MILK, FAT AND PROTEIN YIELDS OF GERMAN FRIESIAN COWS '

THE EFFECT OF THE CHANGES IN FEEDING PROGRAMS DURING DRY AND EARLY LACTATION PERIODS ON THE PRODUCTIVITY OF FREISIAN COWS

DRYING OFF METHODS, PARITY AND STAGE OF LACTATION INFLUENCES ON MILK PRODUCTION, MILK COMPOSITION AND SOME BLOOD PLASMA PARAMETERS IN HOLSTEIN FRIESIAN COWS

GENETIC AND PHENOTYPIC ANALYSES OF DAYS OPEN AND 305-DAY MILK YIELD IN A COMMERCIAL HOLSTEIN FRIESIAN HERD

EFFECT OF SOME METABOLIC MEDIATORS TREATMENT DURING POSTPARTUM ON MILK PRODUCTION AND REPRODUCTIVE PERFORMANCE OF PRIMI- AND MULTI-PAROUS FRIESIAN COWS.

. GENET~C AND NON-GENETIC FACTORS AFFECTING TOTAL MilK YJELDJ DAYS OPEN, NUMBER OF SERVICE " . PER -CONCEPTION AND AGE At FIRST CALVING OF FRIESIAN COWS tN EGYPT.

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

THE EFFECT OF SOME ENVIRONMENTAL CONDITIONS ON MILK YIELD AND ITS CONSTITUENT IN DAIRY FARMS

Effect of Some Non-Genetic Factors on 305-day Milk Yield and Lactation Persistency in Holstein Friesian Cows

EFFECT OF PROTECTED FAT ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF FRIESIAN LACTATING COWS DURING POSTPARTUM PERIOD