Liver steatosis following supplementation with fat in dairy cow diets
Lubojacka, V.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu)E-mail:[email protected] | Pechova, A.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Dvorak, R.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Drastich, P.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Kummer, V.(Vyzkumny Ustav Veterinarniho Lekarstvi, Brno (Czech Republic)) | Poul, J.(ZOD, Zichilek (Czech Republic))
The aim of the present study was to determine the influence of increased intake of fats (calciferous salts of fatty acids) in the early lactation period on the development of liver steatosis in dairy cows. The experimental group (n=10) received more fat (6.99% vs. 3.7%), Ca (1.3% vs. 0.83%) and fibres (15.6% vs. 14.4%) in dietary dry matter than the control one. Two weeks post partum, the experimental animals showed significantly higher blood serum concentrations of betahydroxybutyrate, non-esterified fatty acids (NEFA), total cholesterol, total bilirubin, lactate dehydrogenase, and significantly lower concentrations of total protein and urea than control cows. Liver samples (collected by biopsy in week 4 post partum) showed significantly higher lipid infiltration (69.03% vs. 23.83%) and significantly lower glycogen concentrations (25.74% vs. 53.15%). Increased intake of fats had a substantial effect on the development of liver steatosis.
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