Meat production and quality of Holstein steers fattened up to 400-500 kg of live weight
2003
Chladek, G. | Ingr, I. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic))
A group of 54 Holstein steers was fattened up to 400-500 kg of live weight and slaughtered in order to analyze meat quality and quantity parameters and their mutual relationships. Mean values of the observed parameters were as follows: slaughter weight 435.8 kg, age at slaughter 417.5 days, daily weight gain 1,089 kg, net weight gain 0.566 kg, dressing percentage 51.4 %, weight and proportion of kidney fat 5.05 kg and 2.27 %, respectively, weight and proportion of fat trim 3.93 kg and 3.52 %, respectively, dry matter and fat content in muscle 25.0 and 1.92 %, collagen content in muscle 1.16 %, pH24 5.51, drip loss 1.07 % and remission (525 nm) 7.76 %. Carcass traits were mainly affected by live weight at slaughter, age at slaughter and total weight gain while the effect of duration of fattening and daily weight gain was not so significant. Meat quality was most significantly affected by total weight gain, slightly less significantly by live weight and age at slaughter and duration of fattening and not at all affected by daily weight gain.
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