Application of viscous fluid animal first feed for fish fries

Abstract

The invention discloses an application of viscous fluid animal first feed for fish fries, and belongs to the technical field of biological breeding. The invention breaks through the inherent concept of the traditional first feed, and changes the constant granular shape into plasticity, and the first feed is transformed into cenobium with large grain size from rotifers, protozoa and shellfish larvae as the suitable first feed. The main ingredient of the viscous fluid animal first feed for the fish fries is rhodopseudomonas capsulate. The invention has the beneficial effects that the economic benefit is obvious; by means of applying the viscous fluid animal first feed for the fish fries as the first feed at the initial stage of breeding of seawater fish fries, the survival rate of the seawater fish fries at the initial stage of breeding is greatly increased; the first feed can be produced on scale so as to provide reliable feed sources for the breeding of the fish fries; and the viscous fluid animal first feed has the advantages of simpleness for breeding as well as storage and transportation, wide circulation range, low cost, stable performance, high cost performance and simpleness for promotion, and plays a very important role in breeding the fish fries.

Description

Technical field [0001] The invention belongs to the technical field of biological cultivation, and in particular relates to the application of a viscous liquid animal fry open erbium material. Background technique [0002] At present, improving the survival rate of marine fish fry in the initial stage of cultivation is one of the difficult problems in the cultivation of marine fry. It takes 10 to 15 days for some marine fry to eat rotifers. At this stage, if there is no suitable erbium feed and nutrition Supply the young fry, then the young fry will soon die and cannot undergo abnormal development. In the fish fry breeding process in the aquatic industry, the open erbium feed of the fry is very important. The erbium feed variety, protein content, particle size, quality, shape, color, softness, etc. are all related to the survival rate of the fry. At present, animal erbium materials are used in the opening erbium materials of fry. Most of them use rotifers to cultivate the fry i...

AI Technical Summary

Problems solved by technology

Most of them use rotifers to cultivate the early stages of fry; some use artificially cultivated protozoa; However, there are some deficiencies. When feeding with rotifers, individual rotifers have larger mouth clefts than the fry that just started to eat. Small fry cannot feed rotifers into the food sac. Even if there is a small amount of food, it is difficult to digest. The digestive system in the body is not perfect, and the digestive enzymes are incomplete; using protozoa as the opening bait, although the individual size of protozoa is smaller than that of rotifers, there are still shortcomings: first, for most breeders, the species are more difficult The second is that the surface layer is hard and difficult to digest. The third is that it is difficult to artificially cultivate pure protozoa, which is not conducive to large-scale production; shellfish larvae are used as opening bait, and the opening of some fry is still larger than that of individuals. Protozoa Both shellfish larvae and shellfish larvae have the problem of incomplete nutrition. If they are thrown into the fish fry cultivation pond, if there is no food for these small insects to feed on, these small insects will gradually consume their own egg yolk, and their nutritional value will decrease day by day. After death, they will turn into water instead. In addition, rotifers, protozoa, and shellfish larvae are mainly white in water, which is not conducive to the discovery of open fry

For all the above reasons, the initial survival rate of most seawater fry is extremely low, and sometimes the above-mentioned biological erbium materials are used for the cultivation of seawater fry, and there is a phenomenon that they cannot open their mouths, that is, the fry do not eat and all die by themselves.

[0003] In addition, the existing all-artificial opening erbium materials have unsatisfactory application effects in the initial cultivation of seawater fry, and are generally only used as auxiliary erbium materials in the later stage of seawater fry cultivation (after feeding on rotifers).

Moreover, the existing open erbium materials have the problems of high production cost, large particle size, high hardness, easy sinking, and easy pollution.