Chicken sex identification

Identification of male and female 1 chicks

According to the reproductive process to identify. This method is best carried out within 8-12 hours after hatching of the chicks; at the latest, no more than 24 hours, otherwise, the reproductive processes will shrink and the identification is difficult. Method of operation: After the chicks are out of the shell and the hair is dry, hold it in the hands, remove the feces, sandwich the head between the middle finger and the ring finger, and fix the thumb over the anus, gently press with the right thumb and index finger. Next to the anus, let the anus open slightly. Under bright light, if you see tiny penile protrusions, it is a male chick. The female chicken is not protruding. Accuracy can reach 85% or more.

At present, discrimination in the sex of chicks is mainly based on feathers or feathers, which is the method of most of the supporting systems. Nowadays, all localities are engaged in aquaculture and cultivation. There are various varieties in various regions. Now many farmers use the characteristics of fast growing male rooster of white feather large broilers and the high yield characteristics of hens of fine laying hens to cross breed with each other to produce broilers; The household also uses the cross between the rooster of the three yellow chickens and the hens of the laying hens. Since it is impossible to distinguish between the shapes of the feathers, it is also necessary to return to the original method of identifying the rotator. Due to the fact that the hatching chicks have a high mortality rate for males and females, it has a direct impact on the understanding of the economic benefits of the farm and the chicken farmers. The main reason is that most male and female identification personnel do not fully and firmly grasp their operational technical essentials. Correctly grasping the identification technique for the anaesthesia of hatched chicks can increase the accuracy rate to more than 98% and the speed can reach 1,200 per hour. The disability mortality rate can be reduced to less than 0.5%, which significantly improves the economy of the hatchery. benefit.

Under the condition of good hatching technique, the anal veritable identification includes 6 operation steps of catching a chick, holding a chick, defecation, turning anal, identifying and releasing the chicks. The key to distinguishing between male and female is to master the correct way to turn the anus, not only to quickly open the anus, but also to make the position correct. The commonly used methods include the gripping method and the group grip method.

Defecate the anal. When defecating, the left thumb gently presses the lower left side of the humerus, and the chickens breathe and place the feces in the manure tank. The left thumb moves from the position of the previous defecation to the left side of the anus, and the left index finger bends on the back of the chick. At the same time, the right index finger is pushed along the straight line on the thumb, and then pulled down to the anus to gather. The left thumb is also folded inwards. The 3 fingers converge at the anus to form a small triangle. The 3 fingers gather together and squeeze. Turn it over. Anus operation precautions: 1 operation, posture to coordinate the natural, clear division of the fingers, and mutual cooperation; 2 when the anal, 3 knuckles do not bend, the triangle should be small, do not pull outside the top. 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 turn out the anus; 3 feces to 1 row clean, turn the anus to turn a good one.

Under the premise of correctly turning the anus, the key to differentiation is to accurately discriminate the slight difference between male and female reproductive uplift. In the opening near the anus, the tiny white globular projections at the center of the lower wall of the cloaca, the second and third folds, were judged as males, and those without projections were judged as females.

Identification of the precautions: 1 If you encounter fecal excretion of anus or exudates, you can use the left thumb or right index finger to erase, and then observe; 2 if you encounter a difficult to distinguish the reproductive bulge, you can use two thumbs Or touch the right index finger and observe its degree of elasticity and congestion. Do not touch it many times. 3 If you cannot accurately determine the condition, first see the morphological features of the reproductive uplift, and then perform anatomical observation to summarize the experience.

According to the chick's anal sphincter contraction situation identification. Generally males are more developed than females, and the anal sphincter contraction force is also strong. Therefore, on the day the chicks are newly hatched, the chicks are held in their hands to observe the contraction of the anus. If the anus flashes for a while, it will stop for a while and then it will flash for a while. The number of contractions of the anus will be longer and slower. It will be the female chicken; if the contraction of the anus is quick and powerful, it will be the male chick.

2 After the age of identification

2.1 According to body type to identify

The body is larger, the body is heavier, the eyes are round, the pods are long and sharp, and the thicker feet are male chicks; the physique is smaller, the body is lighter, the eyes are elliptical, the pods are short and round, and the females with smaller feet are females. In addition, after 14-day-old chicks were compared, if the body is longer and heavier, the legs are higher, and the length of the second toe is not the same as the length of the fourth toe, it can be judged as a male chick; if the body is relatively round, the legs are lighter. Short, but the length of the second and fourth toes is the female chicks.

2.2 Walking identification

The male and female were identified based on the toes on the chicken after walking. Remove a layer of ash (such as grass ash, etc.) on the surface of the tan, and let the chicken walk on the ash. If the chicken walks, the toes printed on the two toes cross to form a line. When walking around, the body swings to the left and right, which is generally regarded as a female chick; the toes left after walking are printed in two lines and can be considered as a male.

2.3 Natural Standing Identification

The discriminator identifies the male and female by observing its shape. The front view is a square circle, which is generally considered to be a male; the front view is a small ellipse and is generally considered to be a female chick.

2.4 According to feather identification

Identifying from the change of villi: General female chicks are earlier than new males, and on the 4th day after hatching, new hairs have been grown on the chest and shoulders of female chicks, and male chicks do not have this phenomenon. At 15 days of age, female chick wings and tail feathers grow rapidly and their wing feathers appear rounded. At this time, the male wings are very short, sharp-edged, and have no tail feathers.

Identify from the shape of the feathers: Pull out the wings of the chicks. The length of the feathers is the female chicken. All feathers are basically the same length. This method can identify male and female chicks with an accuracy rate of 98%. It is simple, rapid, accurate and effective in practical production.

2.5 youngster identification

It is a good idea to distinguish between mother and mother when the chick grows up to become a cub (such as a fist). Male chickens have relatively thick flesh and their teeth are blunt, irregular, and of varying sizes. Female chickens have relatively thin flesh and a serrated mouth is small and pointed, neatly arranged and evenly sized. After 4 months, the cock will give birth to one more toe and the hens still have four.

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