REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT
FARRAG, A., SERUR, B., GOM, A. (1986). REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT. EKB Journal Management System, 15.2(30), 234-240. doi: 10.21608/avmj.1986.189926
A.A. FARRAG; B.H. SERUR; A. GOM. "REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT". EKB Journal Management System, 15.2, 30, 1986, 234-240. doi: 10.21608/avmj.1986.189926
FARRAG, A., SERUR, B., GOM, A. (1986). 'REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT', EKB Journal Management System, 15.2(30), pp. 234-240. doi: 10.21608/avmj.1986.189926
FARRAG, A., SERUR, B., GOM, A. REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT. EKB Journal Management System, 1986; 15.2(30): 234-240. doi: 10.21608/avmj.1986.189926

REPRODUCTIVE PERFORMANCE OF IMPORTED FRIESIAN CATTLE IN UPPER EGYPT

Assiut Veterinary Medical Journal
Article 28, Volume 15.2, Issue 30, January 1986, Page 234-240  XML PDF (1.93 MB)
Document Type: Research article
DOI: 10.21608/avmj.1986.189926
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Authors
A.A. FARRAG; B.H. SERUR; A. GOM
Abstract
The breeding records of 238 primiparous Friesian cows bred. at Abnoob El-Hammam dairy farm (Assiut) were studied. The obtained results showed that the average postpartum breeding interval was 111.17+50.99 days. The longest period (113.05 days) was observed during Winter and the shortest was observed during Summer. There was a statistically significant (P/ 0.05) difference between the different seasons studied. Conception rate to service during the first postpartum heat was highest (55.36%) during Winter and Lowest during summer (44.0%). The average postpartum breeding interval was shortest (97.22 days) in animals which gave their first calf at an age less than 24 month. Male calves were heavier (29.63 kg) than female calves (28.97 kg).
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