Artificial selection reveals the energetic expense of producing larger eggs
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چکیده
منابع مشابه
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The large variation in brain size that exists in the animal kingdom has been suggested to have evolved through the balance between selective advantages of greater cognitive ability and the prohibitively high energy demands of a larger brain (the "expensive-tissue hypothesis"). Despite over a century of research on the evolution of brain size, empirical support for the trade-off between cognitiv...
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انتخاب نامساعد یکی از مشکلات اساسی در صنعت بیمه است. که ابتدا در سال 1960، توسط روتشیلد واستیگلیتز مورد بحث ومطالعه قرار گرفت ازآن موقع تاکنون بسیاری از پژوهشگران مدل های مختلفی را برای تجزیه و تحلیل تقاضا برای صنعت بیمه عمر که تماما ناشی از عدم قطعیت در این صنعت میباشد انجام داده اند .وهدف از آن پیدا کردن شرایطی است که تحت آن شرایط انتخاب یا کنار گذاشتن یک بیمه گزار به نفع و یا زیان شرکت بیمه ...
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As with traditional feed grains, the form in which flax seed is fed impacts egg production and hen performance (Choi et al. 1986, Vilarino et al. 1996). Flax seed form also affects the amount of omega-3 polyunsaturated fatty acid (PUFA) incorporated into the egg. Differences in the omega-3 content of eggs from laying hens fed whole versus milled flax seed have been reported, with many researche...
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Traditional poultry production has changed to a considerable industry after few decades. Now, poultry industry is one of the main sectors to obtain the required protein for human consumption. Prediction of the weight and number of eggs according to economic traits can improve the efficiency of production and the profit of producers. In present study, the weight and number of eggs in Mazandaran ...
متن کاملPrediction of the Weight and Number of Eggs in Mazandaran Native Fowl Using Artificial Neural Network
Traditional poultry production has changed to a considerable industry after few decades. Now, poultry industry is one of the main sectors to obtain the required protein for human consumption. Prediction of the weight and number of eggs according to economic traits can improve the efficiency of production and the profit of producers. In present study, the weight and number of eggs in Mazandaran ...
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ژورنال
عنوان ژورنال: Frontiers in Zoology
سال: 2016
ISSN: 1742-9994
DOI: 10.1186/s12983-016-0172-y