SUMMARY

Scientific research undertaken to date quantified publish, isolated on the chemical composition of milk. Milk,,, white blood ' ' contains appreciable amounts of protein, fat, carbohydrates, enzymes, micro and macro minerals, vitamins, characteristics for which it is used in feed for all animals, and especially of man from birth all life as well as in the treatment diet or as a component of medicines or herbal preparations. To obtain these chemical qualities we considered secretion of milk by the mammary gland must be constantly monitored and evaluated to prevent inappropriate secretion because the milk used as food leads to malnutrition, deficiencies and pathological conditions. More population explosion its early XXI century, is accompanied by increasing demand for food the most important share have the animal in milk and milk products is estimated to have the highest nutritional value and the highest. Epidemiological investigations, morphoclinical, surveillance and nutrition, macroclimate, microclimate, chemical analysis of milk and blood, determining the heart rate and breathing and exam microbionţilor fluid rumen led to the formulation of scientific conclusions greenhouse for literature and for breeders dairy and dairy industry. The research was performed on 75 dairy cows in lactations II, III and IV, the early lactation and maximum Holstein of which were taken by 125 samples of milk and blood, and 5 samples of rumen fluid. The components of macroclimat and Environment were determined with specific equipment. Forage ration was checked periodically and adjusted standards in terms of nutritional value and energy. In the period studied animal nutrition (feeding) was done ration feed consisting of alfalfa, fodder beet mixture of feed concentrates (grain maize, Wheat bran, sunflower meal) premix in the early days of lactation and during maximum lactation and grazing pastures with vegetation characteristic Dobrogea region. External temperature recorded values of-5ºC to 2 ° C in winter, spring an