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.
Display Board
We are manufacturer of elevator display boards. We can provide you with a variety of elevator display boards. Including the following different styles:
1. No-display hall call board
Below I will list the pictures and features of some popular styles for your reference.
Red dot-matrix display board for elevators
4.3 inch segment LCD display Elevator Display,Elevator Lcd Display,Elevator Display Screens,Elevator Display Panel Suzhou Keffran Parts Co.,ltd , https://www.keffran-elevatorsmart.com
2. Dot-matrix display board
3. Segment display board
4. True color display board
5. Picture display
6. Multimedia display
1. Dimensions: 130 mm x 72 mm x 5.7 mm
2. Ultra-thin design, energy-saving mode, shimmering breathing light for buttons, abundant functions, timesaving installation, and convenient use and maintenance.
3. High scanning frequency make the screen flash cannot be detected by human eyes, ensuring a high level of comfort.
4. No screen breaking risk and low maintenance cost.
5. Various floor settings, saving commissioning time.
6. Quick query of elevator faults, making on-site maintenance more convenient
7. Dustproof, moistureproof, smokeproof, corrosion-resistant, and strike-resistant, improving product's durability
8. Diverse interaction selection and 3-digit display
9. D6xx and R6xx series display boards:
Car addresses: 0 (encryption certification), D2, D3 or D4
Hall addresses: 1–56 or DH (for hall display)
Features and advantages:
1. Operating ambient temperature: -10℃ to +40℃
2. Ultra-thin design, with a 38% reduction in thickness compared with U1 products
3. Dustproof, moistureproof, smokeproof, corrosion-resistant, strike-resistant, and antistatic
4. Equipped with LCD protection corners, reducing the risk of screen breaking
5. Support of 3-digit display, energy-saving mode, and shimmering breathing light for buttons
6. Abundant functions, time-saving installation, and convenient use and maintenance
7. U673 series display board:
Car addresses: 0 (encryption certification), D2, D3 or D4
Hall addresses:1–56 or DH (for hall display)
Hall addresses: 1–56 or DH (for hall display)
