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1. Crude glycerin in the supplementation of crossbred heifers in tropical pastures

Author

V.V.S. Almeida, A.C. Oliveira, R.R. Silva, J.S. Ribeiro, H.C. Oliveira, L.S. Santos, and D.M. Lima Jr

Subjects
Biodiesel, Byproducts, Conjugated linoleic acid, Glycerol, Lipids in meat, Animal culture, SF1-1100
Abstract

Crude glycerin (CG) is a biodiesel byproduct that has been tested as an alternative feed additive for use in beef production. After being absorbed, it is used in the liver to produce glucose, an important precursor of intramuscular fat in ruminants. This study aimed to evaluate the effect of CG (439 g/kg glycerol) on the performance and meat quality of crossbred heifers finished in Urochloa brizantha cv. Marandu. Thirty-six heifers with an initial BW of 301.5 ± 23.02 kg were used. They were supplemented for 154 days with the following levels of CG: mineral mixture (without CG), 33.3, 66.6 and 99.9 g/kg CG in the DM of the supplement. Supplement or pasture DM intakes, slaughter BW and carcass traits were not influenced (P > 0.05) by increasing levels of CG. The total fat content of the meat, the vaccenic (18:1 n-7t) and conjugated linoleic acid (18:2 c9-t11) increased with the addition of CG in the diet (P

Published
2021
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2. Crude glycerin in the supplementation of crossbred heifers in tropical pastures

Author

Aline Cardoso Oliveira, Julimar do Sacramento Ribeiro, Leandro Soares Santos, R.R. Silva, Vitor Visintin Silva de Almeida, D.M. Lima, and H.C. Oliveira

Subjects
Glycerol, Meat, Feed additive, Conjugated linoleic acid, Byproducts, Crossbreed, Pasture, SF1-1100, chemistry.chemical_compound, Animal science, Animals, Total fat, Urochloa brizantha, geography, geography.geographical_feature_category, biology, food and beverages, biology.organism_classification, Animal Feed, Lipids in meat, Diet, Animal culture, chemistry, Dietary Supplements, Animal Science and Zoology, Cattle, Female, Intramuscular fat, Biodiesel
Abstract

Crude glycerin (CG) is a biodiesel byproduct that has been tested as an alternative feed additive for use in beef production. After being absorbed, it is used in the liver to produce glucose, an important precursor of intramuscular fat in ruminants. This study aimed to evaluate the effect of CG (439 g/kg glycerol) on the performance and meat quality of crossbred heifers finished in Urochloa brizantha cv. Marandu. Thirty-six heifers with an initial BW of 301.5 ± 23.02 kg were used. They were supplemented for 154 days with the following levels of CG: mineral mixture (without CG), 33.3, 66.6 and 99.9 g/kg CG in the DM of the supplement. Supplement or pasture DM intakes, slaughter BW and carcass traits were not influenced (P > 0.05) by increasing levels of CG. The total fat content of the meat, the vaccenic (18:1 n-7t) and conjugated linoleic acid (18:2 c9-t11) increased with the addition of CG in the diet (P

Published
2021

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