Phosphorus is the most biologically functional element in all minerals. Although there is enough phosphorus in the feed during dairy cattle breeding, many diseases are liable to cause a large loss of phosphorus, resulting in the imbalance of calcium-phosphorus ratio in the body. Therefore, it is very important to supplement phosphorus in the process of raising dairy cows. The following diseases occur in dairy cattle breeding to supplement phosphorus:
NO. 1 Reasonable phosphorus supplementation is necessary for the occurrence of the lying-down syndrome in dairy cattle during the breeding process
1. Cow lie-down syndrome is a clinical syndrome characterized by "lie-down" in lactating female cows near delivery or after delivery. High-yielding cows occur most frequently 2-3 days after calving, the incidence of which is 2%-12%. This disease leads to high mortality and the elimination rate of cows, accounting for 60%-70% of the number of infected cows.
2. After the onset of the disease, the symptoms such as high depression of the cow's spirit disappeared after two calcium treatments, and then the cow could not stand up. The diseased cattle had a normal appetite, body temperature, respiration, and heart rate. Some sick cows also try to stand, kneel on their forelimbs, half-flex their hind limbs or stretch backward, and crawl in the "frog-leg" posture. Because of the long-term lying down, mastitis often occurs, and bedsore ulcers occur around the tarsal, foot and hip joints, which eventually lead to the death and elimination of the diseased cattle.
3. Clinical use of calcium preparation, phosphorus preparation, magnesium preparation, and potassium preparation comprehensive treatment. 20% calcium gluconate 500-1000 ml, 20% potassium dihydrogen phosphate 300 ml, 10% potassium chloride 100-150 ml, added to 2000 ml 5% glucose; 25% magnesium sulfate injection 100, 200 ml, one-time intravenous injection, once a day, for three days. Vitamin B1 and B12 can be injected into lumbar nerve plexus acupoints for patients with nerve injury and muscle hyperextension.
NO. 2 Reasonable Phosphorus Supplement in Dairy Cattle Production Paralysis
1. Production paralysis, also known as milk fever, is a kind of hypocalcemia that occurs suddenly in cows before and after childbirth. The disease often occurs in high-yielding cattle with 4 to 5 births, and most occurs 24 hours after delivery.
2. Red urine is a prominent feature of the disease. During the first 1-3 days, the urine gradually changed from light red to red, dark red to purple red and brown, and then gradually disappeared. Severe illness, depression, loss of appetite, anemia, pale and yellow mucosa, blood thinning.
3. Intravenous injection of 20% sodium dihydrogen phosphate 300-500 ml twice a day resulted in severe recovery in 2-3 days.
NO. 3 Rational Phosphorus Supplement for Osteomalacia in Dairy Cattle Breeding
1. Osteomalacia is chronic metabolic osteoporosis caused by inadequate calcium, phosphorus or vitamin content in feed or inappropriate ratio of calcium to phosphorus in adult cattle. Dairy cows with high lactation and improper feeding and management often suffer from this disease.
2. Diseased cattle have abnormal appetite, often lick walls, cow pens, soil, drink urine or fecal soup; decrease of lactation and delayed oestrus mating; stand on arch back, often lie on the ground, limp or limp; limb skeleton swelling deformation, tail vertebral displacement, rib cartilage, and rib joint swelling, hoof deformation is rolled up, susceptible to rotten hoof disease.
3. Intravenous injection of 20% sodium dihydrogen phosphate 300-500 ml once a day for 5 days. At the same time, intravenous injection of 10% calcium chloride 300 ml or 20% calcium gluconate 500 ml once a day for 5 days. In addition, dairy farmers should feed the diseased cattle 250 grams of bone meal every day for 5 to 7 days as a course of treatment.
Phosphorus plays an important role in the production of dairy cows. Phosphorus has the function of participating in energy metabolism and promoting nutrient facts absorption in vivo, so it should be supplemented reasonably and appropriately.