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Despite the fact that cholesterol is a comparatively stable component of cows’ milk its concentration is, within a certain range, subject to significant variation related to the season (probably the feeding system), lactation stage and somatic cell count in milk. The highest differences (about 25%) in the amount of cholesterol per g milk fat were observed between the first and last lactation stage...
An attempt was made at identifying the activity of acid phosphatase (AcP) and β-Nacetylhexosaminidase (Hex) in the whole raw milk of cows maintained on ecological farm and over the autumn/winter and spring/summer seasons (AW and SS season, respectively) fed with typical feeding rations. Both enzymes play a crucial role in animals’ metabolism, affect the technological properties of milk and are indicators...
The aim of the study was to establish the relationship between parametres included in the glucose tolerance test (GTT) of heifers aged 9-10 months and their subsequent milk yield and composition in lactation I. Used were 42 Holstein-Friesian heifers selected from the herd with a mean individual yield of 9600 kg milk/year with 4.32% fat and 3.44% protein. Over 24 hrs preceding the GTT the animals were...
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