Crude glycerin in the supplementation of crossbred heifers in tropical pastures.
Animal
; 15(2): 100088, 2021 Feb.
Article
de En
| MEDLINE
| ID: mdl-33712207
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 (439â¯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⯱â¯23.02â¯kg were used. They were supplemented for 154â¯days with the following levels of CG mineral mixture (without CG), 33.3, 66.6 and 99.9â¯g/kg CG in the DM of the supplement. Supplement or pasture DM intakes, slaughter BW and carcass traits were not influenced (Pâ¯>â¯0.05) by increasing levels of CG. The total fat content of the meat, the vaccenic (181 n-7t) and conjugated linoleic acid (182 c9-t11) increased with the addition of CG in the diet (Pâ¯<â¯0.05). Crude glycerin can be included up to 99.9â¯g/kg of the total diet without changing the performance of crossbred heifers finished in the tropical pasture.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Glycérol
/
Aliment pour animaux
Limites:
Animals
Langue:
En
Journal:
Animal
Année:
2021
Type de document:
Article
Pays d'affiliation:
Brésil