In the production process of chickens, in addition to meeting the needs of chickens for carbohydrates, proteins, minerals, vitamins and other major nutrients, it is also necessary to add some trace elements to their feed. In particular, the three trace elements of iron, copper and cobalt are indispensable elements of chicken body hematopoiesis. Adding proper amount of iron, copper and cobalt to the chicken's feed not only promotes its health, but also improves the performance of the chicken. Addition amount: Chickens within 8 weeks of age were supplemented with iron (ferrous sulfate) 80 mg and copper (copper sulfate) 4 mg per kg of feed. Laying hens add 90 mg of iron (ferrous ferrous sulfate) and 5 mg of copper (copper sulfate) per kilogram of feed.
The screw rod is a machine screw (mechanical screw), which is the kind of flat head at the front end. The screw pitch is small and uniform. It is generally used to fasten metal and machine parts.
Machine silk:
Round head machine tooth screw PM
Round head screw with intermedia
Large flat head screw TM
Countersunk screw km
Half countersunk head machine tooth screw OM
Big head screw BM
Thin head machine tooth screw cm
Cup head machine tooth Bolt HM
Machine Screws,Sewing Machine Screws,Slotted Cheese Head Screws,Fillister Head Machine Screw
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