Method for computing quantity of baits remaining in water and feed conversion rate by using counting method

Abstract

The invention provides a method for computing the quantity of baits remaining in water and a feed conversion rate by using a counting method, which specifically comprises the following steps of: 1, obtaining the weight mini of fishes before a test; 2, performing feeding counting and collecting the remaining baits; 3, recording a single remaining bait quantity; 4, computing single feeding quality according to the computational formula Mi=M(Pi-Qi) / P; 5, obtaining the weight mfim of the fishes at the end of the test; and 6, computing the feed conversion rate according to the computational formula. The method has the advantages of eliminating the influence of biological factors and mechanical errors on the total quality of the remaining baits so as to improve the accuracy of the test, and saving subsequent treatment processes for the collected remaining baits so as to save the time and appropriation expenditures of scientific researchers; and in the method, only the remaining baits are taken into account, the influence of the excrements of the fishes and the existence or inexistence of the excrements are not taken into account, and the excrements and the remaining baits are easy to distinguish in terms of shape and color.

Description

technical field The invention relates to the field of fish bait, in particular to a method for calculating the amount of residual bait in water and the conversion rate of feed by using a counting method. Background technique The food conversion rate and the calculation of the bait coefficient often involve the weighing of the bait before the ingestion of aquatic organisms, the collection of the residual bait after ingestion, and the calculation of the quality of the residual bait. It is necessary in the environmental factors for fish growth and ingestion experiments and feed development experiments. few experimental steps. At home and abroad, the total mass is weighed before feeding, and the siphon method is used to collect residual bait for weight calculation. Domestic method: before feeding, the bait needs to be dried in an oven at 105°C for two hours, and then accurately weighed and fed after cooling. After collecting the residual bait, dry it in the air and dry it for...

AI Technical Summary

Problems solved by technology

2. After collecting the residual bait, the pretreatment of the residual bait, such as air-drying, sun-drying, etc., storage such as freezing, to prevent deterioration, etc., the determination of the ash content in the later stage is time-consuming and labor-intensive work

This is an extremely cumbersome process throughout the test process;

3 The deliquescence and water absorption during the bait storage process lead to errors in the actual feeding amount;

4 It is difficult to separate residual bait and feces, making it difficult to collect residual bait

Images