title: [Carboxylation processes in cattle with different levels of productivity].
abstract: The experiments were conducted on bulls-analogs of the black-piebald and Simmental breed which differ from each other in the intensity of live weight gain (18-31%) as well as on lactating cows-analogs of the black-piebald breed which differ in the level of milk productivity (41-80%). The intensity of the carboxylation processes (CO2 fixation) as well as of protein and lipids biosynthesis in the liver of the bulls from a heavy-producing group (the second group) is shown to be considerably higher than in the low-producing animals (the first group). In venous blood plasm of the second group bulls the content of urea and citrate was higher (by 29-141 and 33%, respectively) than in the first group animals. Blood plasma of the lactating cows from a heavy-producing group contains more urea (57-70%), citrate (146-80%) and total protein (10-14%) than that of animals with low milk productivity. Similar regularity is also observed as to the amount of urea and citrate of milk of cows with a higher milk productivity (by 40-50 and 51-53% higher respectively, than in the low-productive animals).
mesh_terms: D000818:Animals; D001835:Body Weight; D002245:Carbon Dioxide / Q000378:metabolism*; D002417:Cattle / Q000378:metabolism*; D002951:Citrates / Q000378:metabolism; D005260:Female; D007774:Lactation; D008099:Liver / Q000378:metabolism; D008297:Male; D011247:Pregnancy; D011506:Proteins / Q000378:metabolism; D013045:Species Specificity; D014508:Urea / Q000378:metabolism
chemical_list: D002951:Citrates; D011506:Proteins; D002245:Carbon Dioxide; D014508:Urea
vernacular_title: Osoblyvosti protsesiv karboksyliuvannia u velykoï rohatoï khudoby riznoho rivnia produktyvnosti