The study was carried out at the governmental Holstein dairy farm
of Sinai.
north
City at the eastern located beside El-Arish station Decreased milk production of the highly producing cows, emaciation, alopecia, delayed puberty and prolonged anoestrus periods were the most common anamnesis.
Examination of the managerial system, including feeding, feed additives and source of water was carried out. Females were classified according to the productivity and age into low, medium and high producers, heifers under 2 years and calves under one year. Blood samples were taken for haematological investigations.
The results indicated bad managerial system, undernutrition in addition to the bad hygienic conditions. Macrocytic normochromic anaemia was evident among lactating cows while microcytic hypochromic anaem ia was evident among heifers and calves.