搜索结果: 1-2 共查到“生物学 economics”相关记录2条 . 查询时间(0.109 秒)
Effect of Heifer Frame Score on Growth, Fertility, and Economics
Increasing Energy Management Percent Mature Body Weight
font style='font-size:12px;'>
2016/5/17
A non-traditional forage-based protocol was employed to evaluate replacement heifer growth, fertility, and economics between small frame (SF, 3.50; n = 50) and large frame (LF, 5.56; n = 50) heifers u...
Alberta Human Ecology and Home Economics Association (AHEA)(图)
Human Ecology 人类生态学
font style='font-size:12px;'>
2007/12/21
Alberta Human Ecology and Home Economics Association is to maintain high standards of professional ethics, practice and competence in human ecology and home economics in Alberta, by providing services...