[The effect of free amino acid levels in the blood and milk of cows on protein levels in milk].
In the cows of the whole group under study, a significant negative relation (r = = -0.4797) was found between the histidine level in arterial blood and protein content in milk; further, there was a significant positive relation (r = 0.4624) between alanine level in milk and protein content in milk, and a significant negative relation (r = -0.5028) for the level of threonine. The group of cows with a higher milk output showed a significant negative relation between methionine level in milk and protein content in milk (r = -0.7482) and a highly significant negative relation between threonine level and protein content in milk (r = -0.8410). The negative relations of some amino acids to the content of protein in milk suggest that there is a poor supply of these amino acids for the production of protein in milk.
D000596:Amino Acids / Q000032:analysis* / Q000097:blood; D000818:Animals; D002417:Cattle / Q000097:blood*; D005260:Female; D008892:Milk / Q000032:analysis*; D008894:Milk Proteins / Q000032:analysis*
D000596:Amino Acids; D008894:Milk Proteins
Vplyv hladiny vol'ných aminokyselín v krvi a v mlieku kráv na obsah bielkovín v mlieku.