Kasaplık Sığırlarda Bazı Kesim Öncesi Stress Faktörlerinin Et Kalite Özelliklerine Etkileri

Çiftlik hayvanları satış, yetiştirme veya kesim gibi çeşitli sebeplerle sürekli olarak nakledilirler ve nakil işlemi sonrası kasaplık sığırlara çeşitli sürelerde kesim öncesi bekletme süresi uygulanır. Nakil işlemi uygun koşullarda yapılsa bile stresli bir işlemdir. Et kalitesine zarar veren ve stres oluşturan birçok etken nakil sırasında kasaplık sığırları etkiler. Nakil ve kesim öncesi bekletme süreleri et kalitesi için önemli faktörlerdir. Artmış nakil süresi ve kısa kesim öncesi bekletme süresi kas glikojen düzeyinde azalmaya ve et pH’sının düşmemesine sebep olur. Böylece DFD (koyu, sert, kuru) et ve ekonomik kayıplar oluşur. Bu nedenle nakil süresi ve kesim öncesi bekletme sürelerinin et kalitesini olumsuz etkilememesi için mümkün olduğunca kısa tutulmaları gereklidir. Bu derlemenin amacı kasaplık sığırların et kalitesi üzerine nakil süresi ve kesim öncesi bekletme süresinin etkisi ile ilgili bilgi vermektir.

Anahtar Kelimeler:

Et kalitesi, kasaplık sığır, kesim öncesi bekletme süresi, nakil süresi

The Effects of Some Pre-Slaughter Stress Factors on Meat Quality Characteristics in Beef Cattle

Farm animals are always transported for various reasons such as sales, breeding and slaughter; and lairage is applied on the beef cattle with various durations after transportation. Transportation is stressful even if it is carried out under proper conditions. Several factors which damage for meat quality and bring about stress affect beef cattle during the transportation. Transportation and lairage duration are important for meat quality. Increased transport duration and short lairage duration causes decreases in muscle glycogen level and the failure in decrease in meat pH value. Therefore, DFD (dark, firm, dry) meat and economic losses occur. Thus, transport time and lairage time should be applied as short as possible to prevent the adverse effects on meat quality. The aim of the review was to inform the related about the effect of transport and lairage time on meat quality in beef cattle.

Keywords:

Beef cattle, lairage time, meat quality, transport duration,

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