[Normal values of various biochemical indicators in lowland black-white dairy cows from the government sector of the Gdańsk Coast. III. Changes in those indicators during feeding seasons and in consecutive months and years].
In six consecutive feeding seasons the results of tests of biochemical parameters from 5329 cows were estimated. Besides, the parameters from 7229 cows for the consecutive calendar months and years in the period of 1973-1977 were evaluated. It was established that the cyclic seasonal changes were showed only by levels of proteins, sodium, magnesium and calcium. In the months from May to August a decrease of glucose level, an increase of total protein and urea levels as well as a low level of sodium existed. The values of the rest parameters changed irregularly, what ordered to be cautious in a drawing of conclusions on the basis of investigations performed in short periods of times. In particular seasons and years, such phenomena as hypoglycemia, hyperproteinemia, increased level of urea, hypochloremia, hypopotassemia, hypomagnesemia, hypocalcemia and hypophosphoremia could exist irregularly.
Wolańczyk-Rutkowiak
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Zakład Higieny Weterynaryjnej w Gdańsku.
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D001798:Blood Proteins / Q000032:analysis; D002417:Cattle / Q000097:blood*; D003612:Dairying / Q000592:standards*; D005260:Female; D008670:Metals / Q000097:blood; D011044:Poland; D012016:Reference Values; D012621:Seasons; D014508:Urea / Q000097:blood
D001786:Blood Glucose; D001798:Blood Proteins; D008670:Metals; D014508:Urea
Wartości prawidłowe niektórych wskaźników biochemicznych u krów mlecznych rasy ncb sektora państwowego na terenie Wybrzeza Gdańskiego. III. Zmiany wskaźników w sezonach zywieniowych oraz w kolejnych miesiacach i latach.