Shelf cattle are concentrated for 90 to 100 days for enhanced fast fattening, which has the characteristics of short feeding cycle, quick cash flow, high feed remuneration, low production cost, and significant economic benefits. In the spring, using shelf-fed fast fattening shelf cattle, the following aspects should be done: Choosing a good shelf for cattle to choose good meat varieties such as Charolais, Simmental, Limousin and other local yellow cattle hybrids best; in the sex to buy not castrated bull, aged 1 to 2.5 years old, weighing 300 to 400 kg, healthy and disease-free, good body development is appropriate. Disease prevention and deworming requires a comprehensive inspection of the freshly-shelvened cattle. After the healthy person has been injected with the brucellosis vaccine, Clostridium perfringens vaccine, etc., they can enter the polyculture and conduct a comprehensive deworming before entering the house-fed. In addition, the newly arrived cattle are susceptible to stress due to environmental changes, transportation, and frightening. They can add 0.5% salt and 1% brown sugar in drinking water, drink for a week, and feed more grass or hay. A small amount of bran is fed after a few days, and it gradually transitions to feeding fertilizer. During the fattening process, attention must be paid to the intake, excretion, and mental status of the herd. The scientific rearing shelf cattle fattening can be divided into three stages, namely, the pre-fattening period (adaptation period), the middle period of the fattening period (transition of the fattening period), and the late period of the fattening period (the assaulting period). It takes about 15 days before the fattening. Mainly ammoniated straw and silage corn stalk are used as roughage, and combined with local actual feeding of concentrate feed. Feeding methods are as follows: ammoniated orange stalks or silage corn stalks are freely eaten, and the drinking water supply is sufficient. From the second day onwards, the concentrates are gradually fed and then rapidly increased. At the end of the previous period, the concentrates can be fed up to 2 kg per day. Left and right; or mixed concentrates weighted at 0.8% of body weight, an average of about 1.5 kg per day. Concentrate formula: corn flour 45%, wheat bran 40%, cakes 10%, bone meal 2%, urea 2%, salt 1%, plus two cod liver oil per kilogram of feed. The mid-finishing period is usually about 30 days. During the feeding process, it is necessary to pay attention to the reasonable combination of roughage. The ratio of rough coarse material at the beginning of the transition period is 3:1, the middle period is 2:1, and the late period is 1:1. The feed formulation for this period was: cornmeal 6%, wheat bran 15.5%, peeled cottonseed cake 12%, corn straw powder 25.8%, bone meal 0.4%, shell powder 0.3%, salt 50g/head, vitamin A2IU/head, daily Feed one time each morning and evening, keep 4 to 5 kg/day, and drink 2 hours after feeding. It takes about 45 days to finish the fattening. The diet should be based on concentrates. The amount of concentrate can account for 70% to 80% of the total diet, and provide high energy (60% to 70%), low protein feed (10% to 20%). , feed 1.5%-2% per 100kg of body weight, the ratio of crude concentrate is 1:2 to 1:3, appropriately increase the number of feedings per day, and ensure sufficient supply of drinking water. The feed formulation for this period is: cornmeal 2 to 3 kilograms, sugar residue 20 to 25 kilograms, distiller's grains 15 to 20 kilograms, silage straw 10 to 15 kilograms, salt 50 grams, 20 grams of mineral additives, feeding in the morning and evening; or With corn flour 56%, cottonseed cake 10%, wheat bran 8%, ammoniated wheat straw powder 23.5%, growth hormone 1%, salt 1%, sodium bicarbonate 0.5%, feeding 6-7 kg per head per day. The rational use of weighting agents is currently mainly used through the rumen acting weighting agents, such as rumen (monenin), lasalocid and so on. It is usually used as an additive in the form of an oral mixture with the feed, generally 40-60 mg per kilogram of concentrate. The initial amount of feed can be lower, then gradually increase to the required amount. But no more than 360 milligrams per head per day can be given. Quantitative feeds are fed regularly twice a day, from 6 to 8 am, and from 5 to 7 pm at night, each time for 2 hours. Coarse and fine feed must be matched properly. Feeding should be followed by rough finishing, first feeding the hay, and then feeding the lees, then mixing the cornmeal with various additives and evenly feeding it. Daily drinking water 1 or 2 times, if the best conditions to drink milk with warm water, can also drink deep well water. Silage should be taken out and placed in the house on the first day of afternoon for preheating. It is forbidden to feed cows with moldy grasses in order to prevent disease. Xi'an Jmlai Bio-Tech Co., Ltd. , https://www.jmlaisarms.com