A comparison of the fattening performance of German Simmental bulls, steers and heifers

Schwarz, F.J.; Kirchgessner, M.

Zuchtungskunde 62(5): 384-396

1990


ISSN/ISBN: 0044-5401
Accession: 002008569

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Abstract
For 24 bulls, 24 steers and 21 heifers, daily gain from 205 to 363 kg body weight averaged 1536+or-154, 1362+or-152 and 1218+or-129 g resp., and that from 360 to 508 kg averaged 1109+or-185, 987+or-136 and 805+or-99 g. For bulls and steers, daily gain from 506 to 585 kg averaged 1019+or-139 and 767+or-267 g, and from 584 to 656 kg it averaged 1012+or-280 and 785+or-203 g. The differences between the sexes were significant from 205 to 585 kg. There were significant sex differences in food intake from 360 to 585 kg, with heifers and steers having a lower intake than bulls, but bulls had significantly better food conversion than heifers and steers from 205 to 585 kg (2779-5620 starch units per kg gain vs. 3061-7798 for steers and 3387-5865 for heifers), and steers performed better than heifers.