DCP, dicalcium phosphate powder is added dairy and beef cattle calcium and phosphorus minerals commonly used feed, China dicalcium phosphate feed grade standard requirements: phosphorus content of not less than 16%, not less than 21% calcium fluoride is not high at 0.18%. Adult cattle dietary calcium and phosphorus deficiencies can lead to bone disease or osteoporosis, soft, loss of appetite or waste food, pica addiction and production performance. Abnormal estrous cow, repeated with infertility, decreased milk yield. Calf dietary calcium and phosphorus deficiencies can lead to rickets, the early stages, showed loss of appetite, listlessness, progressive weight loss, hair disheveled, hi lying rather than standing and activities that barriers to movement; As the disease progresses, gradual emergence of skeletal dysplasia and soft, bone-side without ossification of the organization to become coarse, spine and sternum deformation. Dairy and beef cattle at different physiological stages of concentrated feed to keep calcium levels of 0.9% to 1.2%, P remained at 0.5% ~ 0.7%.
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Salt can stimulate saliva secretion of other digestive enzymes to promote digestion and to improve feed flavor, enhancing the role of animal appetite. The lack of sodium and chlorine and excess can affect dairy and beef cattle production performance and body healthy, long-term lack of adult cattle salt diet can lead to loss of appetite, listlessness, malnutrition, coarse hair, milk production and productivity levels ; calf diet long enough salt, showed growth retardation, and decreased feed efficiency. However, when too much salt can cause a serious increase in water intake, diarrhea, poisoning. General salt content of total concentrate fed 0.5% to 1% is appropriate; cows to increase milk yield, increased salt may be appropriate.