Study of plasma beta-carotene concentration in dairy cows

Nam, H.M.; Moon, J.S.; Joo, Y.S. .; Oh, T.H.; Park, Y.H.; Han, H.R. . College of Veterinary Medicine

Study of plasma beta-carotene concentration in dairy cows

1999

This study was carried out to determine the effects of beta-carotene on the control of mastitis in dairy cows during the dry period. The relationship between the levels of plasma beta-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 beta-carotene in lactating cows. The levels of plasma beta-carotene were 1.82 micro gram/ml in healthy cows(n=65) and 1.12 micro gram/ml in mastitic cows(n=52), respectively(p0.01). In the experiment to compare the level of plasma beta-caroten in the cows at different stages of lactation, the plasma beta-carotene levels were 1.73 micro gram/ml in lactating cows(n

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