Fatty acid profile and carcass traits of feedlot Nellore cattle fed crude glycerin and virginiamycin
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Data
2018-06-01
Autores
Castagnino, Pablo S. [UNESP]
Fiorentini, Giovani [UNESP]
Dallantonia, Erick E. [UNESP]
San Vito, Elias [UNESP]
Messana, Juliana D. [UNESP]
Torrecilhas, Juliana A. [UNESP]
Silva Sobrinho, Américo G. [UNESP]
Berchielli, Telma T. [UNESP]
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Resumo
Forty-eight bulls with an initial body weight (BW) of 408.4 ± 22.2 kg (age = 21 ± 2 months) were used in a randomized complete block design arranged in a 2 × 2 factorial design. The treatments were diets without virginiamycin (VM−) or with virginiamycin, at 25 mg/kg of dry matter (DM, VM+), and diets without crude glycerin (CG−) or with crude glycerin, at 100 g/kg DM (CG+). The cold carcass weight and cold carcass dressing (P ≤ 0.05) was greater in bulls fed crude glycerin diets. Total unsaturated fatty acids (UFA) were 6.08% higher, and cooking weight loss was 10% lower in bulls fed CG+ diets, compared to bulls fed CG− diets (P = 0.0081). Crude glycerin at 100 g/kg DM could be a suitable replacement for VM, as it led to a slight increase in UFA deposition in meat. However, simultaneous administration of VM and CG did not positively affect performance and carcass traits of feedlot Nellore cattle.
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Beef cattle, Fatty acid profile, Feedlot, Glycerin, Meat quality, Virginiamycin
Como citar
Meat Science, v. 140, p. 51-58.