Veterinary chorionic gonadotropin has the following 5 effects:
1. Promote follicular maturation and ovulation
Chorionic gonadotropin can act on the ovaries of animals. For female animals, it can stimulate the growth of follicles and make them reach maturity. During natural reproduction, some animals may have poorly developed follicles or fail to ovulate on time due to factors such as fluctuating hormone levels. Chorionic gonadotropin acts as a 'catalyst', inducing the proliferation and differentiation of follicular cells by mimicking the action of gonadotropins in the body. In dairy farming, for example, the judicious use of chorionic gonadotropin can lead to a more synchronised follicular maturation in cows, which in turn leads to ovulation at the right time, which is crucial for improving the breeding success of cows. And it can also increase the number of ovulation, to a certain extent, to improve the reproduction rate of the animal, especially for some of the reproductive performance of the individual animals, this promotion is more obvious.
2. Enhance the function of corpus luteum
The corpus luteum is a temporary endocrine structure formed by the collapse of follicle wall after ovulation of animal ovary. Chorionic gonadotropin can promote the proliferation of luteal cells and the maintenance of function. The corpus luteum is capable of secreting progesterone, which is essential for the maintenance of pregnancy. In the early stages of pregnancy, adequate levels of progesterone can keep the uterine environment in a state suitable for embryo attachment and development. If the corpus luteum is not functioning adequately, this may lead to a decrease in progesterone production, which may increase the risk of early embryo death or miscarriage. The use of chorionic gonadotropin can stimulate the corpus luteum to produce enough progesterone, like in the early pregnancy of sows, the appropriate use of chorionic gonadotropin can help to maintain the normal function of the corpus luteum, to ensure that the sows get through the pre-pregnancy period smoothly, and to provide a stable hormonal environment for the subsequent healthy development of the foetus.
3. Promote sperm production in male animals
In male animals, chorionic gonadotropin has an important role. It can act on the testes of male animals and stimulate the spermatogenic cells in the testes. The process of promoting spermatogenesis includes the proliferation of spermatogonia, meiosis of spermatocytes and other links. For example, in stallion breeding, the use of chorionic gonadotropin can improve the spermatogenesis of the testes and increase the number and quality of spermatozoa in the semen. This is of great significance for breeding techniques such as artificial insemination, as high-quality semen improves conception rates and allows for better transmission of genes from good breeding stock. At the same time, it can also improve the vitality of sperms to a certain extent, so that the sperms will have better motility after entering the female reproductive tract and be more likely to combine with the eggs, thus improving the breeding efficiency.
4. Treatment of animal reproductive disorders
Some animals will have reproductive disorders, such as ovarian quiescence or persistent corpus luteum in female animals. Ovarian quiescence means that the ovarian function of the female animal is inhibited and the follicle stops developing. Chorionic gonadotropin stimulates the ovaries and restarts the follicular development process, breaking the ovarian quiescence. Persistent corpus luteum refers to the failure of the corpus luteum to degenerate normally during the oestrous cycle or a specific period of time after giving birth, which results in the failure of the female to come into oestrus normally. Chorionic gonadotropin, by regulating hormone levels, can promote the degeneration of persistent corpus luteum, so that the female animal can resume a normal oestrus cycle. For example, in sheep breeding, when ewes have reproductive disorders, chorionic gonadotropin can be used as an effective therapeutic drug to help restore their reproductive function and reduce the economic losses caused by reproductive disorders.
5. Improve the stability of animal reproductive performance
In the process of animal breeding, the stability of reproductive performance is very important. Chorionic gonadotropin can regulate the reproductive endocrine system of animals to reduce the impact of external environmental changes, differences in feeding management and other factors on reproductive performance. For example, the reproductive performance of animals may fluctuate in different seasons. During high temperature in summer or severe cold in winter, animals' oestrus and ovulation may be suppressed. The use of chorionic gonadotropin can alleviate to a certain extent this adverse effect of environmental factors on reproduction, and make the reproductive cycle of animals more regular. For large-scale farms, stable reproductive performance means that production can be better planned and breeding efficiency can be improved, e.g. breeding times can be arranged more accurately and litter production can be expected, which is conducive to the efficient management of the farm.
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