Effect of salt block with biotin content on serum biotin concentrations and incidence of hoof diseases in dairy cows
2007
Ajito, T.(Nippon Zenyaku Kogyo Co. Ltd., Koriyama, Fukushima (Japan). Central Research Lab.) | Tunoda, M. | Hatakeyama, N. | Ono, H. | Uematu, M. | Sato, S.
The effect of salt blocks with biotin content (300mg/kg and 100mg/kg, HBFB and LBFB) was examined on serum biotin concentrations and the incidence of the hoof diseases in 217 dairy cows. These salt blocks were fed ad-libitum over the course of one year. One year from the commencement of this trial, the serum biotin concentrations of these cows were significantly (P0.001, P0.01) elevated in the HBFB and LBFB groups : 589+-432 pg/ml to 1101+- 1058pg/ml and 473+-250pg/ml to 667+-554pg/ml, respectively. The number of cows with hoof disorders declined significantly (P0.001) in the HBFB group, from 62/121 cows (51.2%) in the initial examination to 25/121 cows (20.7%) after one year. In normal cows, the incidence of hoof disease was significantly (P 0.05) fewer in the HBFB group (8/59 cows : 13.6%), than that in the non-HBFB group (17/54 cows : 31.5%). These results suggest that HBFB elevates the serum biotin concentration, decreases the frequency of hoof disorder, and prevents hoof disease in dairy cows.
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