The Master's thesis was focused on the estimation of the quality of carcasses and meat of bulls from the Czech fleckvieh cattle with the genotype TT and CT for leptin. The experiment was carried out on 121 slaughter modified bodies. The effect of slaughter age of bulls, the slaughter weight, the "nett" increment and the classifica-tion in the SEUROP system was analyzed. Within the frame of morphometric analysis were provably (p < 0,01) the highest proportions almost in all of the analyzed parts (leg length, leg plenitude, leg circumfer-ence, leg spiral circumference, forequarter length and thorax semi circuit) ascertained by the bulls of the highest age and weight categories (aged 701 -- 822 days or life weight 701 -- 890 kg). A positive correlation was discovered between the class of conformation assessed by the SEUROP methodology and JUT weight when by the deteriorating class of conformation "U" > "R" > "O" was the weight of carcasses (428 > 341 > 294 kg) declining. The lowest content of meat (72,54 +- 2,53 %) with the highest content of separable tallow (10,22 +- 3,24 %) was proved on slaughter bodies of bulls of the highest weight category which is not good especially for the meat processor. The greatest per-cent of dry meat (26,08 %) was provably (p < 0,01) found by the bulls that are most intensively growing, whereas this category of bulls also reaches the highest qualities in the parameter of meat energy value (5797,13 kJ.kg-1). The technologic parameters were provably not influenced by the levels of evaluated factors although some exceptions appeared. The statistically evidential (p < 0,01) differences were noticeable in the size of the area musculus longissimus et thoracis (MLT) when the greatest area MLT (104,24 +- 11,03 cm2) was stated by the bulls slaughtered in the highest age (701 -- 822 days), whereas the strength of muscular fibers was by all three age categories comparable.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:250699 |
| Date | January 2015 |
| Creators | Večerek, Lukáš |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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