1. Dairy cow ketoacidosis: overfeeding of concentrates, insufficient crude fiber or indigestion due to decreased prenatal and postpartum feed intake, reduced volatile fatty acids in dairy cows, and a metabolic disorder caused by insufficient carbohydrate supply in feed disease. When the metabolism of carbohydrates and volatile fatty acids in dairy cows is disturbed, the propionic acid produced in the rumen is reduced. Therefore, there is not enough propionic acid converted into glucose by the gluconeogenesis for the use of the body, so that the body's blood glucose concentration is reduced, and the ketone body production is increased. Ketosis, ketouria, or keto-coeliac disease are commonly referred to as ketosis.
2, ruminal acidosis: due to eating too much carbohydrate-rich fine material, such as cereals, legume feed, causing abnormal fermentation in the rumen, so that increased lactic acid, pH value decreased, rumen microflora activity Lowering caused by a digestive disease. Clinically manifested as mental excitement or depression, desperation of appetite and rumen motility, decreased gastric pH and plasma CO2 binding capacity and dehydration, lactic acidosis, also known as carbohydrate compulsive disorder, grain overeating, or rumen stagnation.
3, laminitis: Long-term large amounts of high-energy protein feed, or sudden replacement of feed formulations, especially excessive consumption of high-protein concentrates (beans, wheat, etc.), and lack of exercise, resulting in digestive dysfunction, food Indigestion, the formation of histamine-like substances and is absorbed to cause the disease. When the proportion of crude concentrate is improper, the metabolism of dairy cows will be impaired. In addition, the cows will suffer from heavy weight-bearing pressure, such as long standing on the cement floor or long-distance transportation, resulting in long-term pressure on the timbrial vascular of the hoof dermis, leading to local blood circulation disorders. When some dairy farms are uneven or there are brick stones in the field, the cows touch the hoofs during the exercise to induce the disease. The disease is usually secondary to influenza, pleuropneumonia, certain drug poisoning, pregnancy or postpartum.
In addition, improper proportions of crude concentrates can cause metabolic diseases such as diarrhea, fatty liver, and rumen flatulence.
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