Metabolism, Ketosis Treatment and Milk Production after Using Glycerol in Dairy Cows: A Review
Robert Kupczyński , Antoni Szumny , Katarzyna Wujcikowska , Natalia Pachura
AbstractThe aim of this paper is to review and systematize the current state of knowledge on glycolmetabolism in cattle. Glycerol, derived from biodiesel production, must be purified in order to be auseful product for feeding livestock. The use of glycerol in the feeding of ruminants can be justified forseveral reasons: (i) it is a source of energy in the ration, (ii) it is a glucogenic precursor, and (iii) it mayhave an effect on milk composition. The high energy value of glycerol provides the opportunity to usethis raw material as a partial grain substitute in cattle feed rations. Dietary supplementation of glycerolis associated with increased propionate, butyrate, valerate, and isovalerate concentrations in therumen. Glycerol can be used at up to 10%–15% of the dietary dry matter (DM) and is well-establishedas a treatment for ketosis in cows. Glycerol increases plasma glucose and may reduce non-esterifiedfatty acids andβ-hydroxybutyrate levels. The use of glycerol does not have a clear effect on DMintake, milk yield, or milk composition. However, some authors have reported an increase in milkyield after glycerol supplementation associated with decreased milk fat concentration. It is alsopossible that the concentration in the milk of odd-chain fatty acids andcis-9,trans-11 conjugatedlinoleic acid may increase after glycerol application.
|Journal series||Animals, ISSN 2076-2615, e-ISSN 2076-2615, (N/A 100 pkt)|
|Publication size in sheets||0.8|
|Keywords in English||dairy cows; glycerol; metabolism; ketosis; rumen microorganism|
|License||Journal (articles only); author's original; ; with publication|
|Score||= 100.0, 16-09-2020, ArticleFromJournal|
|Publication indicators||= 0; : 2018 = 1.148; : 2018 = 1.832 (2)|
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