Blood milk refers to milk secreted by dairy cows containing blood, which is bright red, pink, dark purple or purple, occasionally mixed with blood silk in milk, and even secretes black purple milk, and quickly coagulates into lumps. The disease can occur in all kinds of livestock, but it is common in dairy cows. It usually occurs during the first milking after dairy production. After the onset of the disease must be treated in time, otherwise, it can not only lead to a significant reduction in milk production, and even cause the death of dairy cattle in serious cases.
After delivery, the permeability of capillary wall in mammary gland pool is enhanced due to the obvious change of breast blood vessel congestion, which results in the infiltration of hemoglobin or erythrocyte into the glandular lumen or acinar lumen, resulting in the reddening of milk, which may be related to the occurrence of body poisoning.
Due to the excessive expansion of the breast and the occurrence of pregnancy edema, the blood vessels in the breast are filling up before the delivery. It is very easy to damage the capillaries in the breast, causing blood spillage, and then enter the milk pool with the emulsion. If cows have low platelet content or other hemagglutination disorders, it is also easy to cause breast bleeding and cause the disease. It can also be caused by metabolic disorders such as ketosis and stress in dairy cows.
During pregnancy, especially in the later period of pregnancy, due to improper feeding and management, inadequate nutrition facts, the body is relatively weak, coupled with the rapid increase of fetal volume in the latter part of pregnancy, the mother's gastrointestinal tract is squeezed, affecting the function of the spleen and stomach, leading to the weakening of the function of the spleen and stomach, resulting in the biochemical passivity of blood, the heart, and spleen. Two deficiencies, blood from spillover.
Postpartum milk secretion of female cows, that is, red milk, can diagnose breast disease, but the cause must be identified before appropriate treatment can be carried out.
Treatment with hemostatic aromatic acid. When dairy cows are found to suffer from the hemorrhagic mammary disease, the nipples and injection equipment should be strictly disinfected after milking, and then lOmLl0% hemostatic aromatic acid diluted with 10 mL saline is injected into the nipple pool through nipple tube.
After injection, the nipple should be gently pinched to avoid spilling drugs. If multiple breast regions secrete blood milk at the same time, the same dose should be used one by one. If the milk of diseased cows contains inflammatory products, such as flocs or clots, an appropriate amount of antibiotics can be added to the milk pool together. Attention should be paid to the inability of massage and hot compress on the breast of diseased cows to prevent the aggravation of the disease.
Antibiotic therapy. Postpartum breasts of dairy cows are markedly hyperemic and swollen and can be treated with antibiotics when bleeding is not stopped. Immediately after each milking, 3.2 million U penicillin, 1 million U streptomycin, and 100mL. 125% procaine solution was injected into the nipple. After the injection, the nipple was pinched by hand and rammed upward several times to avoid the outflow of the liquid. Three times a day, the number of injections can be increased appropriately when the condition is serious.
For the two therapies used in cow hemorrhagic disease mentioned above, either one of them can be used alone or in combination, which should be determined according to the specific conditions. Dairy cows have a certain interval after milking. At this time, the nipple sphincter can not be completely closed. During cattle farming, if the cow lies in an unsanitary place, it will make the nipple contact with the ground, which makes it very easy for pathogenic microorganisms in the external environment to invade the nipple chamber through the nipple.
Besides, when the cow suffers from hemorrhagic milk disease, the nipple can not be completely closed. The blood contained in the juice can provide sufficient nutrients for bacterial reproduction, which can lead to a significant reduction in body resistance after delivery and the secretion of milk containing blood cows are very vulnerable to secondary mastitis, and even cause systemic infection, leading to the occurrence of sepsis. Therefore, dairy farmers should pay attention to avoid the occurrence of mastitis while treating the disease in cows.