Farrag,, F., El-Barbary, A., Abdel-Glil, M., Hussein, K. (2000). STUDIES ON FRIESIAN CATTLE IN EGYPT I.ENVIRONMENTAL FACTORS AFFECTING MILK PRODUCTION. Journal of Animal and Poultry Production, 25(10), 6095-6104. doi: 10.21608/jappmu.2000.259807
F. H. H. Farrag,; A. S. A. El-Barbary; M. F. Abdel-Glil; K. Hussein. "STUDIES ON FRIESIAN CATTLE IN EGYPT I.ENVIRONMENTAL FACTORS AFFECTING MILK PRODUCTION". Journal of Animal and Poultry Production, 25, 10, 2000, 6095-6104. doi: 10.21608/jappmu.2000.259807
Farrag,, F., El-Barbary, A., Abdel-Glil, M., Hussein, K. (2000). 'STUDIES ON FRIESIAN CATTLE IN EGYPT I.ENVIRONMENTAL FACTORS AFFECTING MILK PRODUCTION', Journal of Animal and Poultry Production, 25(10), pp. 6095-6104. doi: 10.21608/jappmu.2000.259807
Farrag,, F., El-Barbary, A., Abdel-Glil, M., Hussein, K. STUDIES ON FRIESIAN CATTLE IN EGYPT I.ENVIRONMENTAL FACTORS AFFECTING MILK PRODUCTION. Journal of Animal and Poultry Production, 2000; 25(10): 6095-6104. doi: 10.21608/jappmu.2000.259807
STUDIES ON FRIESIAN CATTLE IN EGYPT I.ENVIRONMENTAL FACTORS AFFECTING MILK PRODUCTION
1Dept. of Animal production, Fac. of Agric., Mansoura Univ., Mansoura Egypt.
2Dept . of Animal production and Fish, Fac. of Agric .Alexandria Univ. Alexandria, Egypt.
3Dept. of Animal breeding, Animal production Research Institute, Ministry of Agriculture, Egypt.
Abstract
Total of 1797 records of 765 cows raised in El-Shazly private farm . located in Shobratana – Basyon , Gharbia , Governorate were collected during period from 1985 to 1993 to study the effect of some environmental factors on milk production of Friesian Cattle .
The result obtained could be summarized in the following .
Parity had non- significant effect on all traits study except the effect on 90 days cumulative milk yield was highly significant (P< 0.01) .Year of calving and significant ( P< 0.01 ) effect on different studied traits .
Season of calving had highly significant (P< 0.01) effect on cumulative 90 and 180 days milk yield, and only significant (P< 0.01) effect on total milk yield , lactation period and on the five method used for estimating persistency of lactation .But it is had non significant effect on both 305 and 270 days milk yield .
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