Consultation: What are the constant mineral elements that broilers are likely to lack, and how can supplements be added to the feed?
Answer: 1. Supplemental salt can prevent sodium and chlorine deficiency. The content of salt in the diet of chicken should be 0.37%～0.5%, the dosage must be accurate. The salt content of animal feed should be taken into consideration when formulating diets, and then the amount of supplemental salt should be determined. If salted fishmeal is used in diets, its salt content must be analyzed first, otherwise salt poisoning is often caused by excess salted fishmeal.
2. Calcium and phosphorus-containing feeds are: stone powder, bone meal, eggshell powder, calcium hydrogen phosphate and so on. Such as bone meal, a wide range of sources, low prices, moderate calcium and phosphorus ratio, high biological potency. It is made of livestock (mostly pigs, cattle, sheep) bones as raw materials, steam sterilization after high-pressure sterilization and made of the products, according to their different processing methods, can be divided into steamed bone meal, bone-removing bone powder and calcined bone meal. The use of bone meal in compound feed for broilers is 2% (1% to 3%). Another example is calcium hydrogen phosphate (dicalcium phosphate) calcium hydrogen phosphate as a white or off-white powder. The calcium phosphate has a high utilization rate of calcium and phosphorus, and is a high-quality calcium and phosphorus supplement. The feed content of broilers is 1.5% (1.2% to 2.0%). The quality of bone meal depends on the degree of removal of organic matter. Bone meal with high organic content not only has low calcium and phosphorus content. And often carry a large number of bacteria, easy to produce mildew, and produce abnormal odor, lower quality. Due to the large variation in the quality of raw materials, the quality of bone meal is also unstable. Therefore, there are more and more feed manufacturers that add bone-derived calcium hydrogen phosphate and sodium hydrogen phosphate, and large-scale feed mills use less bone meal.
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