Assessment of Storage and Temperature on Egg Physical Qualities for Peak Production in Hyline Chickens
محورهای موضوعی : Camel
1 - Department of Animal Science, College of Natural Resources, Royal University of Bhutan, Lobesa, Punakha, Bhutan
کلید واژه: egg production, albumen pH, egg physical quality, Environmental conditions, Hyline chickens,
چکیده مقاله :
The aim of the study was to evaluate the effect of storage and temperature on egg physical quality in Hyline chickens line. A total of 150 eggs from College of Natural Resources farm were sampled for the present experiment. About 70 eggs each were stored in home refrigerator (temperature, 7.46±0.23 ˚C; relative humidity, 24.80±0.05%) and room temperature (temperature, 22.98±1.12 ˚C; relative humidity, 48.93±2.50%). The correctness of the conditions was ensured by installing data logger. Egg quality traits monitored included egg weight, egg shape index, specific gravity, egg volume, shell thickness, haugh unit, and yolk index and albumen pH. The results present effects of prolonged storage on the physical qualities significantly (P<0.05). Qualityof eggs rapidly deteriorated when stored in a room temperature compared to those kept in a cold environment. Among the studied egg traits, the pH of albumen seems to be reliable in testing the freshness quality of an egg because of its consistent trend. According to albumen pH information, egg preserved for 10 days under cool conditions remained similar to that of freshly laid eggs, butthe following days seems to be significant (P<0.05). Moreover, the study verified the importance of the correlation coefficient in determining the downgrading of eggs for extended storage.
هدف از این مطالعه بررسی اثر ذخیرهسازی و دما بر کیفیت فیزیکی تخم مرغ در جوجه های لاین بود. در مجموع 150 تخم مرغ از مزرعه دانشکده منابع طبیعی برای آزمایش حاضر جمعآوری شدند. حدود 70 تخم مرغ در یخچال خانگی (دما، 46/7±23/0 درجه سانتیگراد، رطوبت نسبی، 05/0±80/24 درصد) و درجه حرارت اتاق (دما، 12/1±98/22 درجه سانتیگراد، رطوبت نسبی، 50/2±93/48 درصد) نگهداری شدند. از صحت شرایط با نصب غربالگری دادهها اطمینان حاصل شد. صفات کیفی تخم مرغ مورد بررسی شامل وزن تخم مرغ، شاخص شکل تخم مرغ، وزن مخصوص، حجم تخم مرغ، ضخامت پوسته، مرغ، شاخص زرده و pH سفیده بود. نتایج نشان میدهند که اثر ذخیرهسازی طولانی مدت بر کیفیت تخم مرغ مؤثر است و این اثر معنیدار بود (05/0>P). کیفیت تخم مرغ نگهداری شده در دمای اتاق در مقایسه با آنهایی که در یک محیط سرد قرار داده شدند، به سرعت کاسته میشد . در میان صفات مورد مطالعه در تخم مرغ به نظر میرسد، pH سفیده برای بررسی کیفیت تازگی تخم مرغ به دلیل روند ثابت آن قابل اعتماد باشد. با توجه به اطلاعات با pH سفیده تخم مرغ، تخم مرغهایی که به مدت 10 روز تحت شرایط سرد نگهداری شدند شبیه به تخم مرغ تازه باقی مانده و روزهای بعد به نظر میرسد به طور معنیداری (05/0>P) متفاوت است. علاوه بر این، این مطالعه اهمیت ضریب همبستگی در تعیین افت کیفی تخم مرغ در ذخیرهسازی طولانی را تأیید کرد.
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