کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8404074 | 1544689 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling piglet growth and mortality on commercial hog farms using variables describing individual animals, litters, sows and management factors
ترجمه فارسی عنوان
مدل سازی رشد خوک و مرگ و میر در مزارع پرورش تجاری با استفاده از متغیرهای توصیف حیوانات فردی، بستر، گاو و عوامل مدیریتی
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کلمات کلیدی
بچه گانه، مرگ و میر پیش از زایمان، رشد پیش از برداشتن،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
Increases in sow prolificacy have reduced piglet vitality, growth capacity and weight at weaning and even pig weight at slaughter. The aim of this study was to develop a model that predicts likelihood of mortality and weight at weaning. A database containing 3214 records of birth weight, weight gain at 24Â h, rectal temperature at 24Â h, litter size, age at weaning, fostering status, manual assistance of birth and oxytocin use as well as the corresponding 227 records of sow parity and feed intake was analysed using logit functions for mortality and linear functions for weaning weight. The best model of mortality predicted increased likelihood as birth weight, rectal temperature and 0-24Â h weight gain decreased and sow parity and time between births increased (PÂ <Â 0.01, Ï2Â =Â 2910). The best model of weaning weight predicted increases with increasing birth weight, 0-24Â h body weight gain, age at weaning and sow parity and decreases with increasing litter size at 24Â h (PÂ <Â 0.01; AICCÂ =Â 4324; RMSEÂ =Â 0.82). This study confirmed that birth weight and weight gain during the first 24Â h are the principal factors influencing piglet growth and pre-weaning mortality.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Reproduction Science - Volume 188, January 2018, Pages 57-65
Journal: Animal Reproduction Science - Volume 188, January 2018, Pages 57-65
نویسندگان
Lucie Galiot, Isabelle Lachance, Jean-Paul Laforest, Frédéric Guay,