title: [DL-metioninut pri khraneneto na laktirashchi kravi].
abstract: Triais with a total of 240 cows were carried out. The animals were given 30 g DL-methionine each per day. Results showed that the infusoria count per one cu.cm of rumen content in lactating cows that had been given methionine at the rate of 30 g daily was 137013, while in the control animals it was 76431. The amount of lipid matter rose by 0.4 per cent in the controls in the course of the first 90 days of the lactation period. The milk yield of cows that received methionine also rose by 16 per cent, on an average, as calculated in terms of 4 per cent butterfat content for 24-hour period up to the third month of lactation. DL-methinionine in the diet of cows for the first months of lactation leads to grater amounts of milk of higher quality as well as to improving the health of the animals.
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D016798:Ciliophora / Q000302:isolation & purification; D005260:Female; D007774:Lactation / Q000187:drug effects*; D008055:Lipids / Q000032:analysis; D008715:Methionine / Q000494:pharmacology*; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D012417:Rumen / Q000382:microbiology
chemical_list: D008055:Lipids; D008715:Methionine
vernacular_title: DL-metioninut pri khraneneto na laktirashchi kravi