Select pig feed ingredients

First, pay attention to the type and amount of raw materials The variety of raw materials should be diversified to facilitate the use of various nutrients to complement each other. The proportion of commonly used pig feed is cereals such as corn, rice, barley, wheat, sorghum, etc., accounting for 50-70%, bran such as wheat bran, rice bran, etc. account for 10-20, bean cake, soybean meal accounting for 15-20%, Toxic cakes, such as cottonseed cakes, glutinous rice cakes, and rapeseed cakes should be less than 10%, and they must be treated for detoxification. Animal protein feed such as fish meal, silkworm cocoon powder accounted for 3-7%, grass powder, leaf powder less than 5%, shell powder or stone powder accounted for 3.0-3.5%, bone powder accounted for 20-25%, salt should be less than 0. 5%.

Second, pay attention to the characteristics of feed ingredients to grasp the relevant characteristics of raw materials, such as palatability, the content of toxic and harmful ingredients in feed, and feed pollution, with or without mildew and so on. Poor palatability, the amount of raw materials containing toxins should be limited, and severely contaminated and mildewed raw materials should not be used.

Third, pay attention to the volume of raw materials In order to ensure that pigs can eat the nutrients needed every day, the volume of the selected raw materials must be compatible with the digestive tract volume of pigs, if the volume is too large, the amount of feed needed for a day of the pig can not finish, so that The nutrients can not meet the needs, but also increase the burden of the digestive tract; if the volume is too small, although the nutrients are satisfied, but the pig is not full, showing irritable restlessness, thus affecting the growth and development.

Fourth, the mixing of raw materials should be uniform, all kinds of raw materials must be mixed evenly in order to ensure that the pigs eat all kinds of nutrients needed. In particular, when premixed feeds are added, if the mixing is not uniform, it may easily cause pig drug or trace element poisoning.

Fifth, processing and brewing should be reasonable in addition to wheat bran, rice bran, fish meal, bone meal and other powdery raw materials, corn, beans, rice and other seed raw materials should be properly crushed, raw soybeans can not be directly fed to the pig, must be fried or cooked before use.

Six, emphasis on economic principles should be based on the principle of local conditions, local materials, make full use of local Raw Material resources.

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