How do hamsters breed?

How do hamsters breed? The life span of hamsters is very short, with an average of about 2 years. Generally speaking, hamsters have the ability to reproduce when they are 40 days old, but female hamsters suitable for reproduction need to be 3-4 months old. Please don't breed hamsters after they are 1 year old. Male and female mice will mate soon after they are raised together, but they do not necessarily get pregnant every time they mate. When males are in estrus, their testicles become larger, and when females are ready to mate, they raise their tails and begin to mate after they smell the behavior of female buttocks.

1. Long-term cohabitation law

Also known as frequent reproduction, this method is relatively simple in management and can reduce the chance of disease transmission. A male rat was cohabited with a female rat. Female rats can mate and conceive again within a few hours after delivery. In general, each female rat can give birth to one child per month. This can make full use of the reproductive ability of mice (especially the postpartum estrus of female mice). Due to the heavy burden of breast-feeding while pregnant, attention should be paid to strengthening nutrition.

2. Law of regular cohabitation

Also known as non-frequent breeding. One male rat and six female rats were divided into a breeding unit. Put a female rat into the male cage every week, that is, make the male rat live with a female rat according to the number of weeks, and put the pregnant female rat into a single cage for delivery, lactation, weaning, and so on. The production cycle of each female mouse is 42 days, which is longer than that of long-term cohabitation. However, it is convenient for planned supply and production, and the suckling mice get sufficient nutrition, the offspring develop well, and the average body weight at weaning is 1 ~ 2g higher than that of the previous method. At this time, we should often check the reproductive ability of breeding mice, timely eliminate breeding mice with low fertility and add new species.