Several specific operation methods of calf strength fattening method

Limousin cattle is the most ideal meat breed, which has the characteristics of producing early-maturing veal. 8-month-old calves have the marble-like muscles of adult cattle, with tender meat, less deposited fat and more lean meat (accounting for 80%~85%).

Calves are trained to eat grass one week after birth and eat food two weeks after birth. Feed full-price mixed concentrate and high-quality hay after the full moon. At this time, the feeding of milk is reduced, and the concentrate is gradually increased from less to more. The average daily feed intake of concentrate was 1 kg (0.5~2.0 kg), weaned at the age of 4 months, and the weight reached 140 ~ 168.

Then continue to strengthen fattening for 4 months, feed an average of 2.5 kg (2~3 kg) of concentrate every day, and give high-quality hay, alfalfa powder or leguminous forage, and the daily gain can reach more than 1 kg.

At the age of 8 months, the weight reaches 240~300 kg, and you can be slaughtered at this time.

The formula of concentrated feed consists of corn flour 42%, bean cake 15%, bran 25%, fish meal 2.5%, beet residue 15%, calcium carbonate 0.3% and salt 0.2%.

Second, strengthen the feeding of calves and produce white beef.

White beef refers to high-grade beef produced by special calves. Its meat is tender, with high protein content and rich nutrition. Because of its pale color, it is called white beef.

If there is no special calf for meat, it can also be used to produce veal, which can be raised to 10~ 12 months old and slaughtered.

In intensive fattening, due to long-term tethering management, vitamin A and D deficiency is often caused clinically.

Supplementing synthetic oily or dry vitamin preparations in diet can improve the nutritional integrity of young cattle, thus improving the quality of beef.

The results showed that the live weight of young cattle added with vitamin A (intramuscular oily concentrate 65,438+00,000 international units/day) was 5.5% ~ 65,438+03.0% higher than that without vitamin A; Vitamin d supplementation (4000 international units intramuscular injection of oily concentrate every day) is 3.4% ~ 65,438+03.65 and 438+0% higher than that of no supplementation. However, the carcass weight of cattle added with two vitamins increased by 4.6%~ 1 1% and 3.3%~8.3% respectively.

Full-fat milk, with a daily gain of at least 0.7 kg, reached 100 kg three months ago and 95~ 125 kg at14 ~/6 weeks.

In order to reduce the cost and save whole milk, in recent years, many countries have switched to fortified milk substitutes or artificial milk, and the protein content is required to be above 15%.

The raw material of milk replacer is powdery commercial raw material, mainly dairy by-product (skim milk), which contains 20% milk protein. If soybean protein is added, the content of protein can reach more than 22%, and the content of crude fiber is less than 0.5%.

For example, the ingredients of SPAR brand milk replacer are skimmed milk powder 78.37%, animal fat 19.98%, vegetable fat 0.02%, soybean phospholipid 1%, cereal products 0.23%, vitamins and minerals 0.4%.

After feeding colostrum 1 week, calves began to feed milk replacer or artificial milk, and each kilogram of milk replacer was dissolved into emulsion with 7 kilograms of warm water at 35℃~38℃. At first, I mixed it with whole milk. When I get used to it, I can feed it separately.

Within 90 days, * * * consumed 28 kg of whole milk, skimmed milk powder 12 kg, milk powder substitute 18 1 kg, and the average daily gain of calves was 0.92 kg. ..