ACTIVITIES OF ALT, AST, ALP AND LDH ENZYMES IN CATTLE BLOOD PLASMA DEPENDING ON REPRODUCTIVE CYCLE AND SEASONAL CHANGES
In: Veterinaria, Jg. 59 (2013), Heft 1-4, S. 47-57
Online
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Zugriff:
The study was aimed at determining levels of alanin aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) in the plasma of 229 dairy Holstein-Friesian breed cows in different stages of the re¬production cycle and regarding the seasonal changes (diet conditions). Cows were divided into the groups: lactation (Group A), postpartal period within 15 days from calving (Group B) and dry period (Group C). Seasonal variations affected AST activity within Groups A and B, while Group C showed no seasonal influence. Differences between Groups A and B were determined during winter, as well as among Groups A and C during the same season. The highest activity of ALT was measured in cows from Group A during the winter season. ALP activity showed no statistical difference among groups, though statistical significance was noted within seasonal changes. The activity of LDH showed no statistical significance within Group C with regard to the seasonal changes. Statistically significant difference was found between cows of Group A and C during the winter season. Differences were considered statistically significant when pResearch results showed a significant influence of milk production and dry period on the activities of measured enzymes in the blood plasma so we can conclude that there is a need for constant monitoring of the described parameters during the production period.Key words: dairy cows, ALT, AST, ALT, LDH
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ACTIVITIES OF ALT, AST, ALP AND LDH ENZYMES IN CATTLE BLOOD PLASMA DEPENDING ON REPRODUCTIVE CYCLE AND SEASONAL CHANGES
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Autor/in / Beteiligte Person: | Hadžimusić, Nejra ; Krnić, Josip |
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Zeitschrift: | Veterinaria, Jg. 59 (2013), Heft 1-4, S. 47-57 |
Veröffentlichung: | University of Sarajevo, 2013 |
Medientyp: | academicJournal |
ISSN: | 0372-6827 (print) ; 2233-1360 (print) |
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