Breeding excellent varieties.
Variety is a key factor in determining lean meat rate. The lean meat rate of fat pigs or soil breeders is generally 38-45%. The lean meat yield of the offspring of the elite pigs such as Duroc can reach 55%, while the production of Duroc, Changbai, Yorkshire or other lean pigs is produced. The ternary cross-commodity pig has a lean meat rate of over 64%.
Improve feed protein levels.
Corresponding protein levels should be given at different stages of pig growth and development. When the feeding period is 10-20 kg, the feed protein level should be 22-20%; when the weight is 40-60 kg in the growing season, the feed protein level should be 19-16%; during the fattening period, the weight is 60- At 90 kg, the feed protein level should be 16-14%.
Change the feeding method.
The “promotion and control†method of “front and rear limits†should be adopted. That is, before 60 kg, the feeding is limited, and after 60 kg, the feeding is restricted. Generally, the limit is 10-15%, and it is more suitable to be supplemented with green green feed at the same time. The pigs can increase the growth rate and feed utilization rate in the early stage of fattening, and can inhibit the growth of fat, save feed, etc. after the fattening, and increase the lean rate of carcass.
Regularly listed.
As the saying goes: "Small pig long bones, medium pig long meat, big pig long oil", in terms of the growth and development of pigs, the greater the weight, the more fat, the corresponding decrease in lean meat rate, and the consumption of unit weight gain The more feed you have. Therefore, when the gross weight of a typical breed of pigs reaches 90 kg, it is considered to be the best plan, and even if the ternary crossbred pigs are discharged to 110 kg, it will not lower the carcass grade, and may be more suitable for consumers. Meat quality requirements in thin and fat.
Venous cannula is also a deep venous puncture catheter. The method is to select the appropriate puncture site and insert the needle under the skin, and insert the needle with negative pressure until the dark red blood is absorbed, indicating that the needle has entered the vein, and the guide wire is inserted. Withdraw the puncture needle to leave the guide wire in the blood vessel, and then insert the venous catheter that needs to be indwelled along the guide wire, then exit the guide wire, inject diluted heparin saline and fix the catheter, the deep venous catheterization is completed. The veins for puncture and catheterization are usually selected clinically, including the subclavian vein, internal jugular vein, and femoral vein. After the puncture catheter is indwelled, attention must be paid to the care of the puncture site to avoid infection with thrombus or catheter falling off.
venous cannulation,best veins for cannulation,venous cannulation set,venous cannulation technique
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuemedicals.com