Method for promoting female and male parent giant salamanders to synchronously mature

Abstract

The invention belongs to the field of animal husbandry, and particularly relates to a method for promoting female and male parent giant salamanders to synchronously mature. The method is suitable for artificial rearing of giant salamanders. The method is characterized by being realized through the following mode: firstly, selecting sexually-mature parent giant salamanders, and artificially domesticating the parent giant salamanders to enable the same to be capable of taking in food initiatively; and secondly, feeding spawning-inducing medicine to the artificially-domesticated parent giant salamanders from the middle of August to the beginning of September in each year, wherein the spawning-inducing medicine is prepared by mixing luteinizing hormone releasing hormone analogs (LHR-A), human chorionic gonadotrophin (HCG) for fishes and carp pituitary glands. The method of feeding the spawning-inducing medicine is adopted to promote sexual glands of the parent giant salamanders to mature, so that sperm producing amount of male parent giant salamanders is increased by at least 35%, sperm activity is improved by more than 40%, egg laying amount of female parent giant salamanders is increased, and success rate of artificial fertilization is increased by more than 85%.

Description

technical field [0001] The invention belongs to the field of animal breeding, and in particular relates to a method suitable for raising giant salamanders artificially to promote the synchronous development and maturation of male and female broodstock of giant salamanders. Background technique [0002] Giant salamander, commonly known as giant salamander, is a second-class protected aquatic wild animal in the country. It grows fast, has delicious meat, high nutritional value, strong nourishing effect, and has high food value and medicinal value. Therefore, breeding giant salamanders has considerable economic and social benefits. [0003] The gonads of giant salamander female broodstock mature and begin to ovulate in July-August every year. However, the male giant salamander broodstock gonads develop slowly and often cannot mature synchronously with the female broodstock. The synchronous maturation rate is as high as 80%, which causes sometimes when the female salamander ma...

AI Technical Summary

Problems solved by technology

[0003] The gonads of giant salamander female broodstock mature and begin to ovulate in July-August every year. However, the male giant salamander broodstock gonads develop slowly and often cannot mature synchronously with the female broodstock. The synchronous maturation rate is as high as 80%, which sometimes causes female salamanders to mature and cannot find male salamanders to fertilize female salamanders, which seriously affects the reproductive rate of giant salamanders and brings difficulties to the resource protection and breeding of giant salamanders