Effect of feeding system and weight at slaughter of young bulls by different sires on composition and quality of carcass

Goszczynski, J.; Mielnik, J.; Osinski, J.

Zeszyty Naukowe Akademii Rolniczo Technicznej w Olsztynie 185: 95-107

1978


Accession: 000640004

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Abstract
The experiment was with 116 young bulls, progeny of 6 sires, 3 selected for fast growth rate and 3 for slow growth rate. Bulls were intensively fattened on a complete feed or on farm-produced feeds, silage, hay and limited amounts of concentrates. Slaughter was at 450 or 550 kg bodyweight. Dressing percentage was 58 with intensive fattening and 55 with non-intensive at 450 kg and 60 and 55% at 550 kg. Carcass length was 157 and 168 cm and 162 and 174 cm. Percentage of 5 primal cuts was 61.4 and 62.4% and 61.7 and 62%. Lean in the carcass was 64.2 and 69.6% and 63.9 and 69.3%; fat was 18.5 and 10.3% and 19.9 and 12.1%. Lean:fat ratio in 5 primal cuts was 4.89 and 9.48:1 and 4.56 and 7.99:1. Paternal effect on these parameters was not significant.