Method for selecting low-laying-rate hen in feeding process of cage culture laying hens

Abstract

The invention relates to a method for selecting a low-laying-rate hen in a feeding process of cage culture laying hens. The method comprises the following steps: dividing a plurality of groups of hens in a hen group, recording the egg laying quantity of each group for successive days, calculating the laying rate per day of each group, and calculating the group average laying rate of a group which does not achieve 100 percent laying rate; taking a group of which the group average laying rate is lower than a certain value as an alternative elimination group; observing the egg laying situations of individual hens in the alternative elimination group within several days; if the egg laying quantity of a certain hen within individual observation days is zero, eliminating the hen. According to the method provided by the invention, traditional selection of the low-laying-rate hen is converted from experience-based selection to data-based selection, and mass selection is transformed into small-scale directional selection, so that the accuracy rate, the efficiency and the convenience in hen selection are remarkably improved, not only a great number of feeding costs and expenses are reduced in time, but also a potential epidemic disease risk on other healthy hens in the whole hen group caused by a small number of hens in a disease status or a sub-health status is remarkably reduced.

Description

technical field [0001] The invention relates to a method for selecting oligoprolific chickens, and belongs to the technical field of daily feeding and management of large-scale laying hens and layer breeders. Background technique [0002] In laying hen breeding, the egg production rate of laying hens is one of the important indicators to measure the production efficiency of chicken flocks, which affects the input-output ratio of feeding and directly determines the economic benefits of farmers. However, in the breeding process, there will always be chickens with low egg production performance in the flock. We call the chickens that lay less than one egg in an average of 3 days and the chickens that do not lay eggs for 7 consecutive days as oligo-producing chickens. Practice has proved that it is difficult to improve the egg production performance of these chickens under the condition of normal feeding, but it still takes up many costs such as feed, feeding cage, epidemic prev...

AI Technical Summary

Problems solved by technology

[0004] The appearance of oligo-prolific chickens can be divided into two types. The first one is leprosy and diseased chickens that can be clearly distinguished by appearance, which can be easily identified by people and eliminated from the flock. The method used to weed out low-production chickens; the second is chickens that are healthy in appearance but have a low egg production rate or even extinct chickens. low-producing chickens, but it is difficult to find and eliminate such low-producing chickens