Method for breeding laying hen variety with low water content in faeces
A water content and feces technology, applied in animal husbandry, etc., can solve the problems of common medicines and other problems, and achieve the effects of reducing mortality, increasing income, and improving feed utilization efficiency
Active Publication Date: 2019-05-31
CHINA AGRI UNIV
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Problems solved by technology
According to these four characteristics, we speculate that the watery feces of laying hens may be the result of the joint action of bacteria, environment and genetic background, which is also the reason why common drugs are difficult to cure
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] The breeding method of embodiment 1 low excrement moisture content laying hen breed
[0026] 1. Selection of breeding material: In this example, the breeding material is the Luodao red ancestor of a laying hen breeding company. More than 50% of the laying hens in this flock have high water content, and the feces contain more untreated Digested feed pellets.
[0027] 2. Establishment of breeding base group G0:
[0028] The laying hens are routinely raised and managed (using a 3-story chicken house), and the moisture content of the feces of each chicken is graded and counted at the age of 50 weeks. The specific statistical standards are:
[0029] Class I: Feces are completely unformed, contain undigested feed particles, and are yellow in color;
[0030] Grade II: There are more undigested feed, more moisture and shapeless feces, and the color is dark green or yellow-green;
[0031] Grade III: Irregular feces with a small amount of undigested feed and water, black or da...
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The invention discloses a method for breeding a laying hen variety with low water content in faeces. The method comprises the steps that 1) water content situations of the faeces of laying hens are continuously observed and recorded; 2) grading situations of the water content of the faeces of laying hens of each family are counted; 3) the laying hens are graded according to the grading situations,the laying hens with low scores are eliminated, and selectively reserved cocks and hens form a family for pure breeding; 4) step 1)-step 3) are performed repeatedly on G1, G2 and subsequent generations. The method for breeding the laying hen variety with the low water content in the faeces has the advantages that the water content of the faeces of the laying hens of each generation is obviously reduced, after breeding is performed on three generations, the number of the laying hens with higher water content of the faeces is less than 5% of the total, and the problem of high water content of the faeces of the laying hens can be effectively solved, thereby increasing the benefits of majority of laying hen farmers while improving the feed utilization efficiency, reducing the drug use and reducing the mortality rate of the laying hens.
Description
technical field [0001] The invention belongs to the technical field of poultry breeding, and in particular relates to a method for breeding laying hens with low feces water content. Background technique [0002] The water content of normal chicken manure is generally low. If the water content is too high, the manure of laying hens will appear watery. The watery manure of laying hens is an abnormal physiological state. Different from diarrhea, the cause of watery feces of laying hens is unknown and stubborn. If the water content of laying hens feces remains high for a long time, it will reduce feed utilization efficiency, increase mortality of laying hens, and reduce production performance. The general treatment method for diarrhea is to add antibacterial drugs, but in chickens with high feces water content, the use of drugs often has little effect, which not only increases the cost of feeding, but also easily causes drug residues. In addition, due to the high water content ...
Claims
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Inventor 曲鲁江朱涛温俊辉张统雨陈余贾亚雄王梁吕学泽杨卫芳李凯洋张建伟赵晓钰李天增刘平宁中华
Owner CHINA AGRI UNIV