Breeding pigs refer to boars and sows used for breeding piglets. They have one or more advantages such as good applicability, strong disease resistance, good meat quality, high meat yield and high feed compensation, and their quality directly affects the whole. The quality of the group, therefore, pay more attention to the selection, cultivation and feeding management of breeding pigs. Breeding breeding pigs is a key link in pig production and management. First, the pedigree The pedigree selection is based on the phenotype of the parent to judge the phenotype of the offspring. In the selection, attention should be paid to eliminate the hidden dangers of harmful genes. Generally, the method can be used to find individuals with recessive harmful genes, and also to avoid selection. The offspring of their lineage are used as breeding pigs. Second, growth and development Growth and development are selected according to the body weight and body size of the breeding pig. The body weight reflects the growth of the pig and the speed of weight gain. It is one of the important selection criteria for young pigs. It can be screened according to body weight at the time of weaning, and can be used as one of the selected items at a certain age. The weight of the pig should be weighed in the morning before feeding. The body size includes body length, body height, chest circumference, abdominal circumference, leg circumference, etc. These measurements should be selected according to the breeding objectives and production requirements. Third, the shape The shape selection is based on the appearance and shape of the variety itself. The selection of breeding pigs requires strong physical fitness and sexual performance. The details are as follows: 1. Variety characteristics: The appearance and the prominent parts of the hair color, head, ear, body type, etc. are required, and the characteristics of the variety are possessed. 2, body structure: the overall structure of the breeding pig should be well-proportioned, head and neck, neck and forequarters, forequarters and middle body, middle and hindquarters, the combination between the parts should be natural and good. 3, sexual characteristics: boars require good testicular development, sharp outline, the size of the left and right are consistent, not allowed to have a single testis, cryptorchidism or Hernia, the foreskin can not accumulate urine. In addition to the number of nipples that the boar has, the boar's teat is also required to be neatly arranged and to avoid the continuous nipple. 4. Production performance: The production performance is mainly determined by the growth and finishing performance, carcass quality, meat production performance and reproductive performance. The determination is based on the production performance of the self or sibling (semi-sib) or descendants, and has a significant effect on improving the germplasm of the breeding pig. Cable Reel,Water Hose Reel,Water Hose Cable Reel,Commercial Water Hose Reel NINGBO QIKAI ENVIRONMENTAL TECHNOLOGY CO.,LTD , https://www.water-hose-reel.com
