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The hatching chicks penis anaesthesia identification technique essentials
At present, the accuracy rate of identification of male and female chicks in hatchery in the region is generally low, the rate is slow, and the disability mortality rate is relatively high, which directly affects the economic benefits of hatchery and chicken farmers. The main reason is that most male and female identification personnel do not have Fully and firmly grasp its operating technology essentials. If we correctly grasp the technical essentials for the identification of male and female anatomy of hatched chicks, the accuracy rate can be increased to more than 98%, the speed can reach 12,000 per small, and the disability mortality rate can be reduced to less than 0.5%, which significantly improves the economic efficiency of hatchery. First, the correct way to identify the male and female fertility first is to master the correct way to turn anus. It is necessary to quickly open the anus and make it correct. (A) the correct way to flip the anus 1? Grasp the chicks, hold the chicks: The commonly used methods are gripping method and group grip two. 2? Defecation, anal: When defecation, the left thumb gently presses the lower left side of the humerus, and the chickens breathe to discharge the feces into the cadaver. The left thumb moves to the left side of the anus along the previous defecating position. The left index finger is bent on the dorsal side of the chick, while the right index finger is pushed along the straight line on the thumb, then pulled down to the anus to gather, the left thumb is also gathered in, and the three fingers meet at the anus to form a small triangle. Fingers are squeezed together and the anus can be opened. (2) Precautions for the operation of the anal operation 1 Operational movements and postures should be coordinated naturally, and the division of the fingers is clear. 2? When you turn the anus, don't bend the three-finger joints. The triangle area should be small. Do not pull the top of the outer area. The force should be moderate, if the force is too large, the anus is too exposed; if the force is not enough, it is difficult to pull out the anus. 3 feces to be a row of clean, turn up the anus to turn a good one. Second, to accurately distinguish the slight differences in reproductive upheaval Under the premise of correct anal anus, the key to differentiation is the ability to accurately distinguish the slight differences in male and female reproductive uplift. (A) According to the presence or absence of proliferating uplift and the difference in tissue morphology, it can be divided into normal and abnormal types. 1? Normal type: In the opening near the anus, where the second and third folds in the center of the lower cloacal wall have tiny white globular projections, it is judged as male, and if there is no projection, it is judged as female. 2? Abnormal type: abnormal type is difficult to identify. Mainly based on the differences in the morphology of reproductive prominence, namely the appearance of the feeling, luster, elasticity, congestion, the shape of the front of the bulge and other differences to identify the common easy to misjudge the summary as shown in Table 1. (2) Precautions for identification 1. If you encounter fecal matter or exudates from the anus, you can use the left thumb or right index finger to erase and observe. 2. If you encounter a difficult-to-distinguish reproductive bulge, you can use the second thumb or right index finger to touch, and observe its degree of flexibility and congestion, do not touch multiple times. 3 If you can't accurately judge, look at the morphological features of the reproductive uplift first, and then perform anatomical observations to summarize the experience. 4? Note the difference between the normal type and the abnormal type and the shape of the reproductive bulge in different breeds. Third, to improve the speed of identification Usually, the hatchery hatching is very large, and requires the completion of the identification work within 24 hours after hatching chicks, the identification speed is very important, to reach the speed of 12,000 per hour , must do: 1? Hold the youngest anal movement faster, identify the male and female when the brain response faster, faster after the identification of the chicks. 2? In addition to defecation and anal prolapse, it is necessary to identify once again. Fourth, to reduce the mortality rate of chicks with disabilities In the case of good hatchery technology, the best identification time is 8 to 12 hours after hatching, as long as the young, young, defecation, anal, identification, release and other links Correctly, the disability mortality of hatched chicks can be as low as 0.5% or less. In short, to comprehensively and firmly grasp the technical essentials for identifying male and female chicks, not in a short period of time, but in a longer practice, using the hands and brain together, learning from each other, and developing rigorous and serious work style. achieve.