The selection of raw materials should be based on the principles of high quality and low price, stable supply and convenient transportation. The more types of raw materials the better, when conditions permit, so that essential amino acids in feed can be balanced as much as possible. To meet the needs of fish to a variety of essential amino acids to the maximum: must not use moldy material. Mildew raw materials contain a large number of germs and toxins, such as moldy corn contains highly toxic aflatoxins. These feeds can easily cause diseases in fish: cottonseed cakes, rapeseed cakes and other raw materials, although cheaper, have higher protein content than the copyright of rural information, but they contain gossypol and glucosinolates, respectively. Anti-nutritional factors, excessive use will affect the growth of fish. Therefore, limit the amount of use. Usually no more than 10%. Many farmers like to use cheap oil dregs and patties, but this kind of raw material contains a large amount of animal skins, which affects the smooth progress of the crushing and granulation process. The fish is also not digestible after eating: the oil dregs and patties The fats are saturated fats. Some have already started rancidity due to long storage time. The use of saturated fat by fish is low. Excessive intake of rancid fat can also lead to diseases such as fatty liver in fish. Therefore, the amount of such raw materials should be controlled under 5%; in addition, raw materials should also pay attention to raw materials. The moisture content of the dried feed in the southern region is generally 12% -13%. Excessive moisture will reduce the nutritional value of the feed, and may also cause moldy feed and shorten the storage time of the feed.
Single Door Safe Box,Large Office Safe Box,Biometric Password Safe Box,Jewelry Safe Box
Hebei Tiger Brand Group Jia Bao Cabinet Industry Co. LTD , https://www.cntigersafe.com