ORIGINAL PAPER
The comparison of propylene glycol and glycerol as feed additives in early lactation of high producing dairy cows
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1
University of Veterinary and Pharmaceutical Sciences, Department of Biochemistry and Biophysics,
Faculty of Veterinary Hygiene and Ecology, Palackého 1/3, Brno, Czech Republic
2
Private Veterinary Surgeon, Blažíčkova 1406/31, Žďár nad Sázavou, Czech Republic
3
Private Veterinary Surgeon, 5.května 846, Lomnice nad Popelkou, Czech Republic
4
Mendel University in Brno, Department of Nutrition and Forage Production, Agronomic Faculty, Zemědělská 1, Brno, Czech Republic
Publication date: 2014-11-27
Corresponding author
A. Pechová
University of Veterinary and Pharmaceutical Sciences, Department of Biochemistry and Biophysics,
Faculty of Veterinary Hygiene and Ecology, Palackého 1/3, Brno, Czech Republic
J. Anim. Feed Sci. 2014;23(4):285-292
KEYWORDS
ABSTRACT
The aim of this study was to compare the antiketogenic effect of
glycerol and propylene glycol after parturition. Two experiments were carried
out on 36 Holstein cows. In each experiment there were 18 dairy cows receiving
daily 300 ml of propylene glycol and either 500 or 1000 ml of glycerol during
the first month of lactation. Blood was taken on weeks 1, 2, 3, and rumen fluid,
on week 3 after parturition. A similar antiketogenic effect of 300 ml of propylene
glycol and 500 ml of glycerol was observed. Although no negative effects of
high doses of glycerol (1000 ml · d–1) on metabolism, ruminal fermentation, or
liver parenchyma were found, there were no additional positive effects over the
500 ml dose. The results indicate that glycerol is an appropriate alternative for
cattle to prevent energy deficiency in the early lactation period, while increasing
the daily glycerol dose from 500 to 1000 ml has no beneficial effect.
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