Energy status of dairy cows determined by biochemical analysis of organic components of milk | Procene energetskog statusa krava u laktaciji odredjivanjem koncentracije organskih sastojaka mleka
2006
Šamanc, H., Fakultet veterinarske medicine, Beograd (Serbia) | Kirovski, D., Fakultet veterinarske medicine, Beograd (Serbia) | Dimitrijević, B., Fakultet veterinarske medicine, Beograd (Serbia) | Vujanac, I., Fakultet veterinarske medicine, Beograd (Serbia) | Damnjanović, Z., NIC Co. Agrar, Banatski Brestovac (Serbia) | Polovina, M., PKB Korporacija, Beograd (Serbia). Veterinarska stanica
Valid indicators of the energy status of cows are the body condition, parameters of the metabolic profile, hormonal status, and organic components of milk. The energy status of cows of the Holstein-Friesian breed from four farms was estimated on the grounds of urea, protein and fat concentration in milk. Investigations covered 62 samples of milk (11 from farm A, 16 from farm B, 15 from farm C, and 20 from farm D). All cows were in the first stage of lactation and fed rations recommended for that category of animal. It can be concluded on the basis of the value for the milk fat concentration alone that a decreased milk fat syndrome was present. In addition, graphic presentations are given for the relation between urea concentration and protein concentration, as well as protein and fat concentrations in the individual milk samples. Such an analysis provided a more detailed picture of the energy status of the examined cows. The obtained results provide grounds for making recommendations for correcting the feed rations and improving the health of the cows.
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