Method for establishing leiocassis longirostris breeding dynamic feeding table

Abstract

The invention discloses a method for establishing a leiocassis longirostris breeding dynamic feeding table, comprising the following steps of: 1. researching the dynamic relationship between the feeding level, the weight and the water temperature and the maximum feeding rate, the defecation rate, the excretion rate, the body heat gain, the standard metabolism and the activity metabolism in the energy budget expression through a growth experiment; 2. establishing an optimum feeding rate model of leiocassis longirostris on the basis of a bioenergetic model; and 3. inputting the breeding days, water temperature, the initial body weight of fishes, initial energy values of fish bodies, the feed protein level and the feed energy value by using a computer program, outputting the daily weight growth, the maximum daily feeding quantity and the optimum feeding quantity and forming the leiocassis longirostris breeding dynamic feeding table by calculation. The dynamic feed can accurately forecastthe daily growth and the daily feeding rate of the leiocassis longirostris in the breeding process under different environments in time, which not only cannot waste the feed to cause the cost increase and the secondary pollution of the feed, but also cannot influence the growth of fishes, caused by lack feeding of the feed.

Description

technical field [0001] The invention relates to the technical field of aquaculture, and more specifically relates to a method for establishing a dynamic feeding table for long-snout catfish culture, and is especially suitable for long-snout catfish culture. Background technique [0002] Accurate and appropriate feed dosage is one of the key factors in the aquaculture industry and the most important part of aquaculture technology, which is the key factor to reduce the feed coefficient. If the feeding amount is insufficient, the fish will be in a semi-starved state, which cannot meet the energy and nutritional needs of the fish, and the growth and development will be slow. Low, resulting in waste of feed, increasing the re-pollution of residual bait to the breeding water, and the increase of diseases, the breeding benefits have dropped significantly. [0003] At present, in the intensive aquaculture of long-snout catfish with high input and high output using compound feed, th...

AI Technical Summary

Problems solved by technology

However, there are serious defects in this model: (1) the extrapolation results will lead to serious deviations outside the established conditions of the model; (2) the excretion of metabolic waste cannot be estimated; (3) when the feed and breeding environment change, The feeding amount cannot be adjusted in time; (4) It is mainly based on the increase of body length and fresh weight or feed conversion efficiency, rather than the available energy and nutrient content of feed combined with fish body protein and energy storage, which is not suitable for modern aquaculture high energy feed

[0015] The method of using the bioenergetics model to establish the feeding schedule of farmed fish that has been widely used in fisheries abroad has the following defects: (1) Many sub-models are estimated or come from data from different laboratories, rather than through direct experiments (2) Many models ignore the change of fish body energy value with the developmental stage; (3) The application of these bioenergetics models is basically aimed at salmon and trout, and cannot be applied to other fish middle

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