Performance and carcass characteristics of young cattle fed with soybean meal treated with tannins.
This study aimed to evaluate the effects of replacement of soybean meal (SBM) with soybean meal treated with tannin (SBMT) on the intake, digestibility, performance and characteristics of the carcasses of young cattle fed a high-concentrate diet. Forty-two Nellore bulls with body weight of 244.5 ± 4.99 kg were used. Diets had the inclusion of 7.5% SBM, with a proportion of that SBM (0, 33, 66 or 100%) replaced for SBMT; and other treatment (SBMT + urea) just with 2.5% of SBM which was treated with tannins. Seven animals were randomly selected and slaughtered, and the remaining animals were distributed on treatments and remained for 112 days. After, all animals were slaughtered. There was a linear decline in dry matter intake (P = 0.026) when SBM was replaced with SBMT. No decrease in carcass weight (P > 0.05) was observed. The efficiency of carcass weight gain showed a quadratic function effect (P = 0.049). There were changes in carcass gain composition when SBMT was added (P < 0.05), with an increase in muscle and reduction in fat deposition. The use of SBMT in place of SBM causes changes in body gain composition in animals and reduces DM intake by the animals, achieving a better feed conversion efficiency.
Campus de Parauapebas, Universidade Federal Rural da Amazônia, Parauapebas.
Rafael
R
Mezzomo
Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa.
Pedro Veiga Rodrigues
PV
Paulino
Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa.
Marcília Medrado
MM
Barbosa
Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa.
Taiane
T
da Silva Martins
Departamento de Zootecnia, Universidade Federal de Viçosa, Viçosa.
Mario Fonseca
MF
Paulino
Campus de Parauapebas, Universidade Federal Rural da Amazônia, Parauapebas.
Kaliandra Souza
KS
Alves
Campus de Parauapebas, Universidade Federal Rural da Amazônia, Parauapebas.
Daiany Iris
DI
Gomes
Departamento de Zootecnia, Universidade Federal Rural de Pernambuco, Recife, Brazil.
João Paulo Ismério
JP
Dos Santos Monnerat
D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle / Q000502:physiology*; D004032:Diet / Q000662:veterinary*; D004063:Digestion; D004435:Eating; D005223:Fats / Q000032:analysis; D063427:Food Quality; D008297:Male; D008460:Meat / Q000032:analysis; D013025:Glycine max; D013634:Tannins / Q000008:administration & dosage*; D015430:Weight Gain
D005223:Fats; D013634:Tannins
beef; muscle deposition; protein; tannin