Metabolism, Ketosis Treatment and Milk Production after Using Glycerol in Dairy Cows: A Review
Department of Environment, Animal Hygiene and Welfare, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 50-375 Wrocław, Poland
Department of Chemistry, Wroclaw University of Environmental and Life Science, Norwida 25, 50-375 Wrocław, Poland
Author to whom correspondence should be addressed.
Received: 3 June 2020 / Revised: 3 August 2020 / Accepted: 5 August 2020 / Published: 8 August 2020
Glycerol, as well as being an attractive feed ingredient for cattle, is also a by-product of a wide range of industrial applications. Glycerol has potential value in farming since it improves metabolism, feed efficiency, and can alleviate the symptoms of ketosis. Data indicate that glycerol can be a suitable partial grain replacement in the diet of cows during the transition period and at the beginning of lactation. The impact on milk yield is not significant, but glycerol mostly decreases milk fat content. The inclusion of dietary glycerol in the ration of dairy cows has an affect on ruminal fermentation patterns. Glycerol is rapidly fermented in the rumen into propionate, and it is metabolized to glucose in the liver through the process of glycogenolysis. Additionally, glycerol administration to ruminants can reduce greenhouse gas emissions. The purpose of this review is to highlight the potential benefits and drawbacks related to the use of glycerol in cattle.