Meat quality and beef production parameters of Holstein steers fattened up to 10-12 months of age
2003
Chladek, G. | Ingr, I. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic))
An experimental group of 26 Holstein steers was fattened and slaughtered at 10-12 months of age with the aim to analyse feedlot performance parameters and carcass value and their mutual relationships. The mean values of the studied variables were as follows: age at slaughter 331.0 days, live weight at slaughter 368.1 kg, total weight gain 246.5 kg, duration of fattening 214.5 days, daily weight gain 1.150 kg, net weight gain 0.610 kg, dressing percentage 52.0 %, carcass weight 191.5 kg, weight and proportion of kidney fat 5.16 kg and 2.70 %, respectively, weight and proportion of fat trim 3.71 kg and 3.92 %, respectively, dry matter, fat and collagen content in muscle 25.3 %, 2.0 %, and 0.825 %, respectively, pH24 5.50, drip loss 1.66 % and remission on cut (525 nm) 7.80 %. Live weight at slaughter, total weight gain and daily weight gain significantly affected carcass traits - carcass weight, net daily gain and proportion of fat trim. Meat quality (most of all drip loss, dry matter content in muscle and pH24) was also affected by feedlot performance parameters.
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