The effect of turn-out to pasture on blood plasma iron concentrations in beef cattle |
| |
Authors: | M. Hidiroglou B.K. Thompson |
| |
Affiliation: | 1. Animal Research Centre,Research Branch, Agriculture Canada, Ottawa, Ontario KIA OC6 Canada;2. Engineering and Statistical Research Institute, Research Branch, Agriculture Canada, Ottawa, Ontario K1A OC6 Canada |
| |
Abstract: | Beef cows, bred to calve in the spring, were housed indoors over the winter. On May 25, 48 of the cows, and their calves, were put out to pasture while the other 24 cows and calves remained confined.Plasma iron concentrations in the pasture cows were higher (P<0.01) than the levels of the barn cows for several weeks after turn-out, but in September there was no difference (P>0.05). In contrast, the pasture calves showed significantly lower (P<0.01) levels than did the barn calves during the first two weeks, however, there was no difference (P>0.05) in September. No difference in plasma iron levels between male and female calves was found. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|