[Cytological, microbiological and biochemical analysis of cow's milk at the beginning of lactation].
Milk samples of eleven cows of first lactation and ten cows of second lactation were studied in dynamics with regard to their cytological, microbiological, and biochemical properties. The milk was ampled with all quarters individually every other day up to the 10th day, and every fifth day up to the 20th day from calving. It was found that on the second day of calving the cell content of the milk of cows of both first and second lactation was higher, showing a trend of a rapid drop and reaching 441--484 thou. per 1 cm3 by the sixth day. In the course of 20 days following calving there were essential differences in the level of infections with the cows of the two groups. On the basis of the microbiologic investigations it was considered possible to differentiate the inflammation processes of the udder from the normal status on the sixth day.
D000818:Animals; D002417:Cattle; D002452:Cell Count; D005260:Female; D007774:Lactation; D008414:Mastitis, Bovine / Q000473:pathology*; D008892:Milk / Q000032:analysis / Q000166:cytology* / Q000382:microbiology; D008894:Milk Proteins / Q000032:analysis; D011247:Pregnancy; D013290:Streptococcal Infections / Q000473:pathology; D013291:Streptococcus / Q000302:isolation & purification; D013997:Time Factors
D008894:Milk Proteins
Tsitologichni, mikrobiologichni i biokhimichni prouchvaniia na mliakoto pri kravi v nachaloto na laktatsiiata.