Effects of subclinical bovine leukemia virus infection on some production parameters in a dairy farm in southern Turkey
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
AOSIS OPEN JOURNALS
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Some production parameters of seropositive cows (age, first calving age, 305 day mature equivalent last milk yield production, lifetime mature equivalent milk yield production, lifetime total milk production, lifetime total milking period, lifetime monthly milk production, lifetime daily milk production, lifetime total days of milking, number of inseminations per pregnancy (for last pregnancy), number of calves and calving interval (for last pregnancy)) were analysed in the current study. The study population was clinically healthy Holstein cows from a commercial dairy herd in southern Turkey. Of 109 animals, 65 cows were seropositive by ELISA and the prevalence of bovine leukemia virus (BLV) infection was 59.6%. The prevalence of seropositive cows in 2nd (62.8%), 3rd (64.7%), 4th (61.5%), and 5th (66.6%) lactations was slightly higher than that of cows in 1st (52.6%) lactations. No statistical differences were observed between BLV seronegative and seropositive cows for production and reproduction parameters analysed in this study (P > 0.05).
Açıklama
Anahtar Kelimeler
bovine leukemia virus, dairy cows, production
Kaynak
JOURNAL OF THE SOUTH AFRICAN VETERINARY ASSOCIATION
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
78
Sayı
3
