Manual sperm conveying method for laying female muscovy duck

Abstract

The invention discloses a manual sperm conveying method for laying female muscovy duck. The method comprises the following steps that S1, a sperm conveying worker treads on the nape of the female muscovy duck to pacify the female muscovy duck; S2, the sperm conveying worker presses tail feather of the female muscovy duck with a left hand to expose the anus of the female muscovy duck; S3, the sperm conveying worker holds a sperm-containing sperm conveyor with the right hand and pushes 3 to 5cm along the bottom left of the opening of the anus; S4, the sperm conveying worker presses the sperm conveyor with right hand to finish sperm conveying. According to the technical scheme, the method has the advantages that the action characteristics of the female muscovy duck under natural matching condition are imitated on the basis of the structures of reproductive system and digestive system and the physiological characteristics of the female muscovy duck, and therefore, the complex, difficultly-learnt and difficultly-operated processes of overturning the anus or probing into the vagina with finger can be saved.

Description

technical field [0001] The invention relates to the field of breeding technology, in particular to an artificial insemination method for egg-laying muscovy ducks. Background technique [0002] Muscovy duck is favored by consumers for its unique fragrance and low fat. Due to the improvement of breeding technology, the weight of male ducks is getting bigger and bigger, resulting in an increase in the weight difference between male and female ducks. It is difficult to climb and span in pure natural mating, and the production cost of raising a large number of male ducks is high. The method of artificial anal insemination is adopted for breeding. [0003] The artificial anus insemination method used for many years requires the operator's left and right hands to cooperate vigorously at the same time to fully open the vaginal opening on the back of the cloaca. The main disadvantages that exist are: 1. High technical requirements. It is difficult for novices to learn the operatio...

AI Technical Summary

Problems solved by technology

The main disadvantages are: 1. High technical requirements

In the morning when eggs are not finished laying eggs, turn over the anus and inseminate. In mild cases, the hard-shelled eggs in the oviducts will be squeezed, causing the hatching rate of ducks to drop significantly and continue to decline due to oviduct inflammation after the peak egg production, and it will be difficult to recover until they are eliminated. Resulting in the death of female ducks due to peritonitis; 4. The fertilization rate continued to decline

Because laying ducks that can’t turn their anus can’t infuse sperm, there is a phenomenon of missed infusion from time to time. In addition, some unskilled personnel have rough insemination operations, and inflammation of the oviduct mucosa is inevitable, and the forward movement of sperm is blocked. The fertilization rate of the eggs produced keeps decreasing with the prolongation of the age; 5. The insemination dose is artificial with the glass curved needle, and the semen dose input into the oviduct of each female duck is inconsistent, which affects the fertilization rate. Without replacement, it is easy to break, increase the cost and cause cross-infection; 6. After the anus is turned, the vagina and the vaginal opening are facing downward, and the input semen is easy to flow back and come out in a small amount, which will affect the fertilization rate of the eggs

[0004] The finger penetrating vaginal insemination method is not only low in insemination efficiency, but also the operator’s fingers are repeatedly inserted into the vagina, and the fingers are easy to carry bacteria and cross-infect the vagina, increasing the risk of infection, so it is rarely used in large-scale production

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