Giant pandas are unique to our country and are the "national treasure" of our country and are called "living fossils". Because of its sparse number, reproduction issues have attracted people's attention.
China's scientific and technological workers used artificial insemination to reproduce giant pandas successfully. When giant pandas breed naturally, there are one child, one child, one child, and occasionally one child, one child, and three child. However, artificial insemination of giant pandas are almost all one child, that is, they are all twins.
female giant pandas in estrus, there are many follicles , overlapping into blocks, and emptying the ovary surface. Judging from some biochemical results, it is believed that giant pandas are generally bi-egg, or even more. Moreover, the two egg cells may not be discharged at the same time, and may be twenty or thirty hours apart. Beijing Zoo Tan Bangjie believes that artificial insemination causes giant pandas to give birth to two babies in each baby, which is to restore its original ecology, and contains the meaning of ancestral rebirth phenomenon . It may have been two or even three children in each baby. Due to the changes in the ecological environment, life is becoming increasingly difficult and insufficient nutrition, so it gradually transforms into one child in each baby. Some people also believe that this is related to the number of mating times.
natural mating. Female beasts and the same male beast can usually mate several times within a few hours, and sperm has few chances to encounter two eggs. Artificial insemination takes several days once a day, and the quality of the semen is good and the amount is large, which increases the chance of multi-egg fertilization. The problem of artificial insemination of giant pandas being twins is that it needs to be explored. With the solution of this problem, the reproductive ability of giant pandas will be improved, thus making this national treasure prosperous.
