Reproduction is important in dairy farming.Not only the production of milk is dependant on reproduction,but also the gen......

通过对肉用种母牛产犊配种间隔的研究发现，产犊配种间隔与肉种牛膘情有关，与季节有关，与样本总休比，十二月份差异极显著，十一月份较显著......