Cultivation method and feed feeding device of small yellow croaker with high female rate

Abstract

The invention discloses a little yellow croaker cultivating method in high female rate, and a fodder feeding device. An objective of the method is to solve problems that female rate of little yellow croakers obtained by an artificial breeding method is relatively low, fodder easily sinks to the bottom of a pool after feeding, and the fodder is wasted. The method comprises the following steps: a, cultivating fries, using soybean milk to perform nutrient enrichment on rotifer which is initial feed of little yellow croakers, 5 days after the little yellow croakers are hatched, bailing out the nutrient-enriched rotifers and feeding into a little yellow croaker culture pond, continuously feeding for 10 days; b, culturing in an early stage, after 15 day-old of the little yellow croakers, starting to feed yolk; c, culturing in a medium stage, after 30 day-old of the little yellow croakers, controlling water temperature of the culture pond between 20 and 22 DEG C, wherein in 30 day-old to 40 day-old, feeding soybean milk enriched fairy shrimps, after 40 day-old and before 90 day-old, feeding an artificial compound feed; d, culturing in a later stage, after the little yellow croaker are 90day old, water temperature of the culture pond recovering to water temperature of normal seawater, and continuing to feed the artificial compound feed.

Description

technical field [0001] The invention relates to a method for cultivating small yellow croakers, more specifically, it relates to a method for cultivating small yellow croakers with high female rate and a feed feeding device. Background technique [0002] At present, the number of males in small yellow croaker populations is significantly higher than that of females in both wild and farmed states, while artificial breeding hopes to obtain more females to ensure enough high-quality eggs. However, the female rate of the small yellow croakers obtained by the artificial breeding method adopted now is low, and the feed tends to sink to the bottom of the pond after being fed, resulting in a waste of feed. [0003] Chinese patent publication number CN106577382A discloses a small yellow croaker family construction and excellent family breeding method, including the following steps: 1. Obtaining the parent fish of small yellow croaker, 2. Construction of the small yellow croaker famil...

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the problem that the female rate of the small yellow croaker obtained by the artificial breeding method is low, and the feed tends to sink to the bottom of the pond after being fed, resulting in waste of the feed, and provides a small yellow croaker breeding method with a high female rate and a feed feeding device , the female rate of small yellow croakers obtained by this breeding method is high, and artificial breeding can obtain more high-quality eggs

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