Wet feed for improving reproductive performance of parent fish of little yellow croakers and feeding method

Abstract

The invention discloses a wet feed for improving reproductive performance of parent fish of little yellow croakers and a feeding method, the wet feed mainly comprises the following components in parts by weight: 40-60 parts of yellow croaker cream, 40-90 parts of a nutrient supplement for the parent fish of the little yellow croakers and 0.1-0.3 part of fish oil, and the feeding method comprises the following steps: mixing the wet feed with the particle size of 0.3-0.4 cm and the length of 0.4-0.5 cm according to the amount of 1kg / 1000 fishes; the parent fishes are fed twice a day in the morning and afternoon, so that the feed intake, the weight gain rate, the gonad index, the fertilized egg amount and the fertilization rate of the parent fishes are improved. The feed disclosed by the invention is stable in quality, meets the nutritional requirements of the parent fishes of the small yellow croakers, contributes to improving the feed intake, weight gain rate and growth performance of the parent fishes of the small yellow croakers, promotes gonad development and reproductive capacity of the parent fishes of the small yellow croakers and setting of feeding time and feeding times, conforms to the enzyme activity characteristics of digestive tract protease of the small yellow croakers, is beneficial to digestion and absorption, and meanwhile, the soft pellet feed is convenient to transport and store.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a wet feed and a feeding method for improving the reproductive performance of broodstock of small yellow croakers. Background technique [0002] The meat of small yellow croaker is rich in lysine, glutamic acid, EPA and DHA. It is famous for its delicious meat and rich nutrition. It is deeply loved by the public. It is an important marine economic fish in my country and was once one of the four major seafood in China. However, due to overfishing, the production of wild small yellow croaker has declined in recent years, and the individual miniaturization trend is serious. With the establishment of small yellow croaker artificial breeding technology in 2014, the wild population of small yellow croaker is expected to be guaranteed. But at present, the artificial breeding of small yellow croaker broodstock still lacks special nutritional feed, and the breeding and br...

AI Technical Summary

Problems solved by technology

[0003] At present, since the research and development of small yellow croaker feed has just started, the feed for large-scale farming mainly adopts the compound feed of a similar species, large yellow croaker. The hatching rate is low, and the effect is not as good as that of chilled bait. However, feeding with chilled bait such as oyster meat and squid cubes is inconvenient to obtain materials and has uneven nutritional quality in different batches. Design and invent a new type of wet feed that combines the high nutritional value of chilled fish and the stable quality of compound feed, so as to strengthen the reproductive nutrition of small yellow croaker broodstock

Images