Crude glycerin as an energy feed for dairy cows


  • Ozana de Fátima Zacaroni Universidade Federal de Goiás
  • Cristielle Nunes Souto Universidade Federal de Goiás



glycerol, methanol, sensorial feed additives.


Crude glycerine is a residue generated from the production of biodiesel. As there was an increase in the demand for biodiesel observed in recent years, there was also a concomitant increase in the production of glycerin, and this by-product is not being used by industries. Thus, new alternatives can be viable, such as the use in dairy cows’ food. The use of glycerin in the animal diet has shown to be a viable alternative to nutritional and economic aspects. Our aim in this review was to demonstrate the use of glycerin in dairy cow diets and the possible effects on its milk production. In several studies it is possible to observe that the crude glycerin can be included in the diet of ruminant animals without causing negative effects on their metabolism, ruminal fermentation and milk production. Studies on the deleterious effects of the inclusion of crude glycerin with high methanol content in the dairy cow diet should be performed.

Author Biographies

Ozana de Fátima Zacaroni, Universidade Federal de Goiás

Departamento de Zootecnia

Cristielle Nunes Souto, Universidade Federal de Goiás

Médica Veterinária pela Universidade Federal de Goiás - Regional Jataí (2012). Atualmente é doutoranda na Escola de Veterinária e Zootecnia - UFG, departamento de Zootecnia. É vinculada ao grupo de pesquisa Produção de Organismos Aquáticos de Interesse Zootécnico no Cerrado Brasileiro, da Pontifícia Universidade Católica de Goiás e ao grupo de Produção de peixes tropicais no cerrado da UFG-Regional Jataí. Têm seus trabalhos direcionados ao estudo do papel da Taurina no status nutricional de espécies nativas de peixes com importância para aquicultura.


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Review Article - Science of Animals and Derived Products