Study of plasma β-carotene concentration in dairy cows

Nam, Hyang-mi; Moon, Jin-san; Joo, Yi-seok; Oh, Tae-ho; Park, Yong-ho; Han, Hong-ryul

Korean Journal of Veterinary Research 1999;39(5):1021-1027.

Hyang-mi Nam¹, Jin-san Moon¹, Yi-seok Joo¹, Tae-ho Oh², Yong-ho Park², Hong-ryul Han²

¹National Veterinary Research & Quarantine Service
²College of Veterinary Medicine, Seoul National University

젖소의 혈장 베타카로틴 농도 조사

남향미¹, 문진산¹, 주이석¹, 오태호², 박용호², 한홍율²

¹국립수의과학검역원
²서울대학교 수의과학대학

Abstract

This study was carried out to determine the effects of ${eta}-carotene$ on the control of mastitis in dairy cows during the dry period. The relationship between the levels of plasma ${eta}-carotene$ and the status of udder health in Holstein dairy cows were investigated. Blood samples were collected from 117 cows to compare the levels of plasma ${eta}-carotene$ in lactating cows. The levels of plasma ${eta}-carotene$ were $1.82{mu}g/ml$ in healthy cows(n = 65) and $1.12{mu}g/ml$ in mastitic cows(n = 52), respectively(p < 0.01). In the experiment to compare the level of plasma ${eta}-carotene$ in the cows at different stages of lactation, the plasma ${eta}-carotene$ levels were $1.73{mu}g/ml$ in lactating cows(n = 22), $1.29{mu}g/ml$ in nonlactating cows(n = 35) and $0.43{mu}g/ml$ in cows after calving(n = 16)(p < 0.05).

Key Words: mastitis, plasma ${eta}$-carotene, dairy cows