Study of plasma β-carotene concentration in dairy cows |
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 |
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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 |
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