Qualitative characteristics of meat from young bulls fed different levels of crude glycerin.
The objective was to evaluate the fatty acid profile and qualitative characteristics of meat from young bulls fed crude glycerin. Forty-four animals with an initial live weight of 368 ± 4 kg were used in a completely randomized design, with four treatments: no glycerin or addition of 6, 12 or 18% glycerin. The animals were slaughtered with 519.5 ± 14.9 kg of live weight. The meat characteristics assessed were chemical composition, shear force, fatty acid concentration, color and lipid oxidation. The addition of glycerin increased the content of ether extract (P<0.05) in the muscle. A linear increase was observed (P<0.05) in the oleic acid contents (C18:1 cis 9). The saturated fatty acid (SFA) contents linearly decreased in the muscle as a function of glycerin addition. The lightness (L*) and yellowness (b*) indices increased with the use of crude glycerin (P<0.05). The crude glycerin increased the intramuscular fat and oleic acid content in the longissimus dorsi muscle.
Department of Animal Science, Universidade Federal de Lavras, Lavras, Minas Gerais, 37.200-000, Brazil.
J R R
JR
Carvalho
M L
ML
Chizzotti
E M
EM
Ramos
O R
OR
Machado Neto
D P D
DP
Lanna
L S
LS
Lopes
P D
PD
Teixeira
M M
MM
Ladeira
D000003:Abattoirs; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D001835:Body Weight; D002417:Cattle; D003116:Color; D004032:Diet / Q000662:veterinary*; D004041:Dietary Fats / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005511:Food Handling; D063427:Food Quality; D005990:Glycerol / Q000008:administration & dosage*; D044243:Linoleic Acids, Conjugated / Q000032:analysis; D050356:Lipid Metabolism / Q000502:physiology; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry; D013025:Glycine max / Q000737:chemistry; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis
D004041:Dietary Fats; D005227:Fatty Acids; D044243:Linoleic Acids, Conjugated; D017392:Thiobarbituric Acid Reactive Substances; D005990:Glycerol
Biodiesel co-product; Biohydrogenation; CLA; Glycerol; Lipids; Meat color