First, preparation before fattening. Lamb feeding for 15 days before weaning at 15 months of age, or separating the ewes from lambs in the morning and evening, allowing the lambs to move in the circle with fine feed troughs and drinking fountains. Department. Supplemented feeds should be the same as those used for fattening after weaning. The grain can be broken slightly at the beginning of feeding, and it is advisable to use whole grains and whole grains after being accustomed to. It should not be processed into powder. The floor of the lamb's activity area should be dry, rainproof and well-ventilated. Lamb fattening common infectious diseases include enterotoxemia and hemorrhagic septicemia. Enterotoxemia vaccine can be given to ewes before lambing, or to lambs before weaning.
Second, the formulation of fattening diet. Any kind of grain feed can be used to fatten lambs, but the best ones are high energy feeds such as corn. Practice has proved that the whole grain material has a better fattening effect than the grain-breaking grain feed, mainly due to the high feed conversion rate and less gastro-intestinal disease. Recommended feed formula: 83% whole corn, 15% soybean cake, 1.4% limestone powder, 0.5% salt, multivitamin and trace element 0.1%. Among them, the amount of vitamins and trace elements added per kilogram of feed is: vitamins A, D, E are 500IU, 1000 and 20IU, zinc sulfate 150 mg, manganese sulfate 80 mg, magnesium oxide 200 mg, cobalt sulfate 5 mg, Potassium iodate 1 mg. If there is no soybean cake, 10% fish meal can be used instead, and the proportion of corn is adjusted to 88%.
Third, feeding technology. Lambs eat freely and drink freely. It is best to use self-made simple automatic feeding troughs for feeds to prevent the four hooves of lambs from stepping into the troughs, causing feed pollution and reducing feed intake and spreading coccidiosis and other pathogens. The height of the manger should be increased with the increase of the lamb's age, and it is advisable that the feed in the tank does not accumulate or overflow. If some of the lambs are found to be feeding on the wall, a salt tank should be added to the playground. Salt or salt and lime powder should be placed in the tank to allow the lamb to feed freely. It should also be noted that during the initial period when lambs are eating whole corn, there are corn grains that spit out of the mouth. As the age increases, the spit of corn grains gradually disappears; the rumors of lambs are also less early and more late, and these are normal phenomena. Affect fattening effect. Under normal conditions, the lamb’s excrement is yellow and there are no corn kernels in the excrement; however, the lamb may appear diarrhea in the weather or on rainy days. Fattening does not change the feed formula throughout the entire period.
Fourth, timely slaughter. The lamb fattening period is 50 days. However, the final weight of fattening is related to the variety. The final weight of lambs for large-scale sheep breeds of 3 months old can reach more than 35 kg. According to the study, the final weight of the fine-wool lambs and non-meat breeds is related to the weaning weight at 1.5 months. Generally, when the weaning weight is 13-15 kilograms, the weight of the fattening can reach more than 30 kilograms for 50 days, and the weaning weight is less than 12 kilograms. The fattening finally weighs about 25 kilograms.
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