| Abstrakt: |
The main chemical indicators of goat milk were studied of three groups of animals – Bulgarian White Dairy breed (BWD) and its crossbreeds with Anglo- Nubian (BWDxAN) and Toggenburg (BWDxTG) during the lactation for a twoyear period. The animals are raised in the herd at the Experimental Base of the Research Institute of Mountain Stockbreeding and Agriculture - Troyan under the same production conditions. The milk samples milk were taken at the beginning, the middle and the end of the lactation period from each animal individually as well as mixed samples from each goat group and were examined using a Milko-Skan FT 120 apparatus. The goats of BWD breed has the highest milk yield for control milking, followed by the crossbreeds of BWDxTG and BWDxAN. The values of the content of dry matter, dry fat-free residue, protein and milk fat are higher in the milk of crossbreeds in comparison with BWD breed. In wider variation ranges, the content of milk fat and dry matter varied, and minor variations were observed for the dry fat-free residue and the protein in the three groups. In all three study groups of goats, the lowest results were recorded in the middle of the lactation period for the indicators of dry matter, dry fat-free residue, protein and milk fat. [ABSTRACT FROM AUTHOR] |
