Lucerne grazing compared with concentrate-feeding slightly modifies carcase and meat quality of young bulls.
Carcase and meat quality of young bulls raised on one of three fattening strategies from 224 to 450 kg were compared. One group was fed concentrates (CON), another group grazed on lucerne plus 1.8 kg DM barley/day (LUC) and the last group had the same management as LUC young bulls for 3 months and was then finished on concentrates for 2 months. Among carcase traits, only tissue composition differed, with LUC young bulls having more muscle and less subcutaneous and intermuscular fat than their counterparts. Concerning meat quality, most attributes did not differ among fattening strategies but LUC young bulls had the lowest intramuscular fat, which presented greatest n-3 PUFA content. It can be concluded that lucerne grazing can be a good alternative to concentrates for young bulls, with similar carcase and meat quality but with lower fat content and healthier fatty acid composition than young bulls fed concentrates during the finishing period.
Blanco
M
M
Unidad de Tecnología en Producción Animal, CITA-Gobierno de Aragón, Avda. Montañana 930, 50059 Zaragoza, Spain. mblanco@pctad.com
Casasús
I
I
Ripoll
G
G
Panea
B
B
Albertí
P
P
Joy
M
M
D000273:Adipose Tissue; D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D002417:Cattle; D004041:Dietary Fats / Q000032:analysis; D015525:Fatty Acids, Omega-3 / Q000032:analysis*; D001467:Hordeum; D008297:Male; D008460:Meat / Q000032:analysis* / Q000592:standards; D000455:Medicago sativa; D018482:Muscle, Skeletal / Q000737:chemistry*; D050151:Subcutaneous Fat
D004041:Dietary Fats; D015525:Fatty Acids, Omega-3