Five ways to identify fresh eggs
A look: the shell of fresh eggs is rough, with a layer of frosty powder, bright color; the shell of old eggs is relatively smooth, the shell of smelly eggs is black, and there are oil stains on the shell.
Second listen: gently shake the egg in the ear, the sound of the good guy is solid, but the voice of the bad guy is different.
Three photos: hold the egg in both hands like a tube, facing the sun or light perspective, the good egg is reddish, translucent, the yolk outline is clear.
Four turns: put the egg on the plane and turn it gently with your hand. when the fresh egg turns, there is resistance in the eggshell and stops after two or three weeks; the bad guy turns long and fast; if the egg turns neither fast nor slow, it proves that it is not fresh enough.
Five drifts: put the eggs in salt water and sink to the bottom of the water are fresh eggs; big head up, small head down, half-sunk and half-floating are old eggs; smelly eggs float on the surface.
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Experience of rejuvenation of thin cattle in spring
1. Each cow is fed with 200 grams of white sugar or brown sugar every day, dissolved in an appropriate amount of warm water, and fed continuously for a week. 2. 250 grams of bean curd residue, 50 grams of rice bran, 50 grams of wheat bran, 10 grams of fish meal and 10 grams of salt per cow were mixed evenly and fed before grazing in the morning for 2-3 weeks. 3. Use 100 grams of soybeans and corn, grind them with water, add 250 grams of rice bran and an appropriate amount of salt, mix well, and feed the cattle once a day after eating grass for a week. 4. Will be cooked
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Artificial forced molting technique of chickens
1. After ingesting excessive or insufficient amount of chemicals in a certain period of time, chemical chickens cause metabolic disorders and dysfunction of internal organs, resulting in the suspension of production or molting of hens. After the removal of chemical agents, after rest and physical recovery, the hens resumed the second laying period under the condition of normal feed. At present, the most commonly used chemical method is to feed high zinc diet. For example, if the chicken was fed with a diet containing 2% zinc, the laying rate of chickens decreased to less than 50% after 3 days, and all production was stopped after 6 to 7 days.
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