ارزیابی اثر وزن لاشه، سن کشتار و جنسیت بر ترکیب شیمیایی گوشت بره: مطالعه موردی گوسفند نژاد بوتسیکو
Subject Areas : Camelو. الکساندریدیس 1 , ب. اسکاپتاس 2 , د. کانتاس 3 , پ. گولاس 4 , م. کالایتزیدو 5
1 - Department of Animal Production, School of Agricultural Technology, Technological Educational Institute of Larissa, 41110, Larisa, Greece
2 - Department of Animal Production, School of Agricultural Technology, Technological Educational Institute of Thessaloniki, 57400, Thessaloniki, Greece
3 - Department of Animal Production, School of Agricultural Technology, Technological Educational Institute of Larissa, 41110, Larisa, Greece
4 - Department of Animal Production, School of Agricultural Technology, Technological Educational Institute of Larissa, 41110, Larisa, Greece
5 - Department of Animal Production, School of Agricultural Technology, Technological Educational Institute of Thessaloniki, 57400, Thessaloniki, Greece
Keywords: جنسیت, سن, کیفیت گوشت, نزاد بوتسیکو, وزن لاشه,
Abstract :
اثر وزن لاشه، سن کشتار و جنسیت بر برخی از ترکیبات شیمیایی در 22 رأس بره بوتسیکو (12 ماده و 10 نر) ارزیابی شد. ترکیب شیمیایی گوشت به صورت درصد چربی، پروتئین، کلاژن و رطوبت بیان شد. اندازهگیری این 4 ترکیب شیمیایی در قطعاتی از لاشه، شامل کتف، پا، پشت گردن، کلیه، تهیگاهی عقب، دندههای سینه و استخوان گردن صورت گرفت. نتایج نشان داد که درصد چربی، پروتئین و کلاژن در سطح قابل مقایسه با سایر نژادهای گوسفند و شاخصهای اتحادیه اروپا است. آنالیز تابعیت نشان داد که بین سه متغیر مستقل، تنها وزن لاشه تأثیر معنیداری بر میزان چربی، پروتئین و رطوبت داشته و سن کشتار تنها عاملی است که بر میزان کلاژن مؤثر است. رابطه مثبت معنیدار وزن لاشه با میزان چربی و رابطه منفی آن با میزان رطوبت و پروتئین نشان دهنده آن است که کاهش اندک وزن نتایج مطلوبی در کیفیت شیمیایی گوشت، از طریق کاهش چربی و افزایش رطوبت و پروتئین خواهد داشت. کاهش اندک سن کشتار نیز سطح کلاژن را بهبود بخشیده و این عامل نیز به نوبه خود بر نرمی گوشت تأثیر خواهد گذاشت. کاهش وزن لاشه و سن کشتار به معنای کاهش عرضه گوشت در بازار و کاهش سطح درآمد تولیدکنندگان خواهد بود.
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