منابع مشابه
learner autonomy in a computer-assisted project-based efl reading classroom
آموزش برمبنای ذخیره اطلاعات ، دانشجویان را به عنوان افرادی غیر متفکر وغیرقابل کنترل می پندارد . در همین راستا ، خواندن در سیستم آموزشی برمبنای ذخیره اطلاعات ، مهارتی پنداشته می شود که می توان آن را با یاد گرفتن انفعالی وجداگانه تعدادی از مهارتهای جزیی فراگرفت . درآن سو خواندن در سیستم آموزشی برمبنای طرح مسآله ،به عنوان رفتاری نقادانه تلقی می شود که از طریق آن می توان دنیای فرای کلمات را کشف کرد...
Polwarth and Texel ewe parturition duration and its association with lamb birth asphyxia.
The objective of the present study was to test the hypothesis that parturition duration is related to birth asphyxia in lambs and that asphyxia affects newborn lamb viability and vigor. Two sire and dam genotypes (Texel: TX; Polwarth: PW) and their crosses were represented in the study. Eighty lambs (25 PW sire × PW dam, 13 TX × TX, 25 TX × PW, and 17 PW × TX) born to 69 grazing ewes were used....
متن کاملFeeding and Managing the Ewe Flock: A New Watch
The number of lambs sold per ewe mated in the breeding flock has a considerable impact on sheep operation profitability. This depends primarily on fertility, prolificacy (# of lambs), and lamb survival, mothering ability, milk production of the ewe and lamb growth rate. Optimal reproduction does vary by environment and management system – some sheep operations don’t want a lambing rate over 200...
متن کاملMycotic rhinitis in a Mutton Merino ewe.
Although nasal masses are uncommon in sheep and may have several causes, including neoplasia and bacterial, fungal and viral infections, these lesions may lead to economic losses resulting from weight loss and even death. It is therefore important to differentiate between various categories of upper respiratory tract obstructions and lower respiratory tract infections. The correct aetiological ...
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ژورنال
عنوان ژورنال: Nigerian Veterinary Journal
سال: 2018
ISSN: 0331-3026
DOI: 10.4314/nvj.v39i1.9