Grass carp set meal feeding method according to law of natural variation of dissolved oxygen in water body

Abstract

The invention discloses a grass carp set meal feeding method according to the law of natural variation of dissolved oxygen in a water body. The daily grass carp set meal feeding mode is determined according to the daily dissolved oxygen level in a pond water body, in a low dissolved oxygen period, feed with a low nutrient level is fed, and in a high dissolved oxygen period, feed with a high nutrient level is fed. The set meal mode of grass carp in a growing period is put forward according to the whole-day natural dissolved oxygen variation law in the pond, thereby accurately meeting the physiological needs of the grass carp in different physiological states. The set meal mode is reasonably designed, and the distribution of the feeding amount per meal is also based on a large number of research and statistics results. A breeder can directly observe the feeding status of the fish, the feeding amount can be timely adjusted, the fed feed is basically eaten by the fish, the residual bait isless, water pollution caused by excessive feed input can be avoided, and the freshness of the breeding water environment is ensured. The grass carp feed utilization efficiency can be improved, the grass carp feed coefficient is reduced, the breeding cost is reduced, and the comprehensive benefits of breeding are improved.

Description

technical field [0001] The invention relates to a grass carp feeding method, in particular to a grass carp set meal method according to the natural variation law of water dissolved oxygen, which belongs to the technical field of aquaculture. Background technique [0002] my country is a big aquaculture country in the world. In 2015, the national freshwater aquaculture area was 6,147.24 thousand hectares, of which the pond aquaculture area was 2,701.22 thousand hectares, accounting for 43.94% of the total freshwater aquaculture area, much higher than lakes, reservoirs, river ditches and other aquaculture methods. In 2015, the total output of aquatic products nationwide was 66.9965 million tons, of which aquaculture output was 49.379 million tons, accounting for 73.70% of the total output. In 2015, the national grass carp aquaculture output was 5.6762 million tons, accounting for 20.91% of the bulk freshwater fish production, ranking first among freshwater aquaculture fish in ...

AI Technical Summary

Problems solved by technology

At the same time, the feeding amount is insufficient when the dissolved oxygen is high, resulting in an increase in the feed coefficient of the cultured grass carp, and the growth performance of the cultured grass carp cannot be maximized.

Images