For cattle with a weight of 300-400 kilograms, the cattle are concentrated for 90-100 days and the fast fattening is performed. The body weight is about 500 kilograms. It has the characteristics of short feeding period, fast cash flow, low production cost, and remarkable economic benefit. In the spring, the use of housing for fast fattening of shelf cattle should be done in the following aspects.
First, choose a good shelf cattle in the varieties to choose the best meat varieties such as Charolais, Simmental, Limousin, etc. and the local yellow cattle hybrids the best; in the sex to buy a non-castrated bull, Age 1 to 2.5 years, weight 300 to 400 kg, healthy and disease-free, good body development is appropriate.
Second, disease prevention and deworming on the shelf to buy the cattle to be a comprehensive inspection, healthy people to take brucellosis vaccine, Clostridium perfringens vaccine, etc. before entering the polyculture, and before entering the feeding and fattening a comprehensive drive insect. 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. After a few days, a small amount of bran was fed and the fertilizer was gradually transferred to feed.
Third, the rational use of weighting agents is currently used mainly through the rumen function of weighting agents, such as rumen (monenin), lasalocid and so on. Orally mixed with the feed, usually in the form of additives, usually 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.
Fourth, scientific feeding
Shelf fattening cattle can be divided into three stages, namely the pre-fattening (adaptation period), the middle fattening period (fertility transitional period) and the fattening period (anticipation fattening 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: aminated straw or silage corn stalks are freely eaten, and the drinking water supply is adequate. Gradually feeding the concentrate from the second day, and then increasing rapidly. At the end of the previous period, the feed material can be fed up to about 2 kg per day. Or the mixed concentrate is weighed 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 reasonable collocation 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 1 time each morning and evening, keep 4~5kg/head every day, drink 2 hours after feeding.
It takes about 45 days to finish the fattening. The diet should be mainly concentrated, and the amount of concentrate can account for 70% to 80% of the total diet, and supply high-energy (60%~70%), low-protein feed (10%~20%). , feed 1.5%~2% per 100kg of body weight, the ratio of crude concentrate is 1:2~1:3, appropriately increase the number of feedings per day, and ensure adequate supply of drinking water. The feed formulation for this period is: cornmeal 2~3kg, sugar residue 20~25kg, distillers grains 15~20kg, silage straw 10~15kg, salt 50g, mineral additive 20g, feed once in the morning and evening; or With corn flour 56%, cottonseed cake 10%, wheat bran 8%, ammoniated wheat straw powder 23.5%, auxin 1%, salt 1%, sodium bicarbonate 0.5%, feeding 6-7 kg per head per day. The higher the feed intake, the faster the cattle grow, but the feed utilization rate will decrease. Therefore, it is better to eat eight points when fed fattening cattle. The method of determination is to see when the cow starts to ruminate after feeding. If rumination begins in about 30 minutes, it is just right.
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