First, choose "a tight, two hard, three long" mother duck. The so-called "tight" means that the feathers are close and detailed, close to the body, flexible in action, and strong in eating power; "two hard" means that the ribs are hard and the garden is keel, and the keel is hard and prominent, showing good bone development, strong physical stature and strong living ability; The "three long" mouth length, neck length and body length, together with the prominent eyes and gods, this type of duck is more likely to obtain food, fish and shrimp in the water. The body is long, the abdomen is square, the plump and slightly drooping ducks indicate that the ovaries, fallopian tubes, uterus and other reproductive organs and digestive organs are well developed, and more eggs are produced. The ventilator is a productive duck. 2. Measure the base of the phalanx and the base of the leg with your fingers. High-yielding ducks can accommodate 3 to 4 fingers between the phalanges. The phalanges can accommodate 3 to 4.5 fingers at the end of the phalanges, and the base of the wings and the roots of the legs can accommodate more than 4 fingers; the pitch of the phalanges is small, the belly is small and hard, and the body is short and the egg production is low. Unstable. Third, grab the duck neck and raise the duck. The high-produce ducks stretch their legs straight down. Each toe stretches and they do not move. The low-yield ducks' feet are curled up, and the toes move closer and continue to paddle. 4. Water and animal husbandry: When a female duck that lays eggs lays on a normal pastoral tour on the water, the duck body sinks by two-thirds, the tail is upturned, and the swim is quick. Fifth, grazing on the shore: When the egg-laying female ducks are slow to move on the shore while grazing, they move slowly, while the non-productive female ducks move fast and agile when grazing on the shore. Sixth, appetite: Every egg-laying female duck has a strong foraging rate, and the food in the crop is more filling. Whereas the non-laying female duck has a poor feeding rate, the crop is not full. Seven, spring and autumn observation method. As the saying goes: "Spring duck has one flower, autumn duck is ugly". Spring ducks have just started to produce eggs. At this time, mother ducks with good egg production have a strong metabolism, lively and lively, and the feathers are delicate and glossy, just like “flowersâ€. If the duck feathers at this time are messy and unlustrous, most of the "big hairs and big flowers" are in poor health and have poor egg production. In the fall, many female ducks have more nutrients, and the feathers are not shiny or shiny. The belly also suffers from a long time of laying eggs, feathers, and some even fall down and stumble. It is like an “ugly strangeâ€. However, ducks with few eggs produced stopped moulting earlier, but at this time they looked clean and tidy, with a thick neck and a good waist. The appearance is very good. Most ducks with poor egg production performance should be eliminated. VIII. Those with low quality in the group should be eliminated in time. Such as moulting early, long time, many times, greedy for lazy sleep, light long fat does not lay eggs, habitual raw soft shell eggs, misshapen eggs, with disabilities, weak and poor Pet Toy,Pet Products,Pet Training Toy,Cheap Pet Products Eastony Industries (NingBo) Co., LTD. , https://www.eastony.com
Election of high production duck law