Effect of different intakes of energy as roughage in feeds during fattening on fattening performance and quality of meat in fattening cattle

Karadjole, I.; Rako, A.; Simunic, B.; Premuz, F.; Milulec, K.; Krizanovic, D.; Abram, K.

Veterinarski Arhiv 47(5): 257-265


ISSN/ISBN: 0372-5480
Accession: 000349495

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Group 1 was 23 young Simmental cattle whose ration during fattening, in terms of oat feed units, was of concentrates 76.75, maize cobs (without grain) 7.52, hay 7.73 and silage 8.00%; for group 2, 18 cattle, the proportions were 85.18, 7.99, 6.27 and 0.56%. The concentrate was of maize grain and soya bean oilmeal and the 2 rations had 8.89 and 10.45% digestible crude protein. The cattle were tied up and fed freely for 7 months. Total gains were on average 298 and 303 kg and mean daily gains 1403 and 1361 g, so the second group took 11 days longer to reach the slaughter weight. Feed used for 1 kg gain was 6.47 and 6.37 feed units, 523 and 597 g digestible crude protein. None of those differences was significant, but group 2 had a significantly higher carcass yield though with more fat and less bone, not significantly more muscle meat. It is concluded that for best fattening results the proportion of feed units supplied by roughage should first increase from 16 to 28% at about 7 to 8 months of age and then fall to 20% towards the end of fattening.