Early stage: corn 25, secondary flour 10, wheat bran 30, vegetable cake 15, cotton cake 13, silkworm chrysalis 5;
Mid-term: corn 25, sorghum 10, wheat bran 20, bran cake 10, unified bran1,kidney bean 2, vegetable cake 18, silkworm chrysalis 2;
Late stage: corn 50, secondary flour 10, wheat bran 6.5, bran cake 10, kidney bean 3, vegetable cake 12, blood meal 2 and silkworm chrysalis 5.
Second, the formula of trace elements (referring to the feed content per 100 kilograms, pigs can eat more than 2.8 kilograms per day); 5 g of oxytetracycline, 25 g of copper sulfate, 5 g of ferrous sulfate 10, 35 g of dried yeast, 30 mg of calcium tablets 15 tablets, 30 mg of cobalt sulfate, 5 mg of sodium selenite and 500 g of salt.
Dissolve the above medicines in boiling water and mix them into feed. Dry and humid dough should be kneaded into dripping dough, and then piled up for fermentation. 15℃ for 24 hours, above 20℃ 12 hours, and above 30℃ for mixing and feeding. Feed it 4-5 times a day. The above dosage is the upper limit, and the dosage should not be increased blindly. Note that copper sulfate is hot, and there should be enough drinking water in summer.
Third, the application of hormones: ① triacontanol: water solution is fed to pigs 3-5 ml a day. If it is powder, use it according to the manufacturer's instructions. ② 920: 3. 1g each time, once every three days. Discontinued 40 days before slaughter. Attachment: Experimental Formula of Animal Husbandry Institute of Shanghai Academy of Agricultural Sciences:
Early stage: corn 20, wheat bran 2.25, barley 15, fish meal 4.5, cotton cake 3.5, green sugar 4, vegetables 50, stone powder 0.5 and salt 0.25. Can make pigs gain 483 grams a day;
Mid-term: corn 17.5, wheat bran 5.25, barley 12.5, fish meal 2, cotton cake 3, green sugar 9, dried vegetables 50, stone powder 0.5 and salt 0.25. It can make pigs gain 727 grams a day;
Late stage: corn 15, wheat bran 4, barley 10, fish meal 1, cotton cake 1.75, green sugar 17.5, dried vegetables 50, stone powder 0.5 and salt 0.25. It can make pigs gain 838 grams a day.
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