land act

The rate of cow's oestrum fecundation is one key factor of cattle's breeding rate.

奶牛情期受胎率是影响奶牛繁育率的重要因素之一。

Eleven estrus and inducing estrus bitches were inseminated three times after an interval of one day during an oestrum. Two bitches were pregnant and then delivered seven young beagles 61-62 days after the first artificial insemination.

对11只自然发情和诱导发情犬进行鲜精授精，每只发情母犬隔天连续授精3次，结果有2只母犬成功受孕并于第一次授精后的61-62天自然分娩产下7只幼仔。

the riddle of a dog's oestrum is a very special scenery, especially those who has a female dog in the family, it is really a wonder.

狗的反群之迷的确是狗的最独特的风景线，特别是家里有小母狗的朋友，那可真是一大奇观了。

application of embryo transfer technology to rural normal oestrum cows

自然条件下牛胚胎移植技术的推广应用