Within-litter birth weight variation in the domestic pig and its relation to pre-weaning survival, weight gain, and variation in weaning weights
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چکیده
منابع مشابه
Within-litter birth weight variation in the domestic pig and its relation to pre-weaning survival, weight gain, and variation in weaning weights
To determine the relationship between within-litter birth weight variation and pre-weaning survival and weight gain, and to provide practical guidance on fostering low-birth-weight piglets, we analyzed piglet survival and weight gain in litters of piglets from 52 sows followed through eight consecutive parities. Litters with high variation in birth weight had more deaths, especially if the litt...
متن کاملBirth weight variation in the domestic pig: effects on offspring survival, weight gain and suckling behaviour.
In domestic pigs, litter-mates often vary considerably in birth weight. To examine whether this size variation influences piglet survival, weight gain and suckling behaviour, we experimentally manipulated the number and size distribution of litter-mates in 51 litters. Litters were small (eight or nine piglets) or large (11 or 12 piglets) compared to the herd mean of 10 piglets, and were made mo...
متن کاملWithin-litter variation of birth weight in hyperprolific Czech Large White sows and its relation to litter size traits, stillborn piglets and losses until weaning
Data from about 2900 litters (approximately 40,000 piglets) originating from 1063 Czech Large White hyperprolific sows were analyzed. The phenotypic and genetic relations between litter size traits, piglet mortality during farrowing and from birth to weaning and several statistics referring to the distribution of the birth weight within litter were analyzed. All genetic parameters were estimate...
متن کاملA study of factors affecting survival from birth to weaning and total weaning weight of the litter in swine.
University of Minnesota p RODUCTIVITY in brood sows during the pre-weaning period is measured by fertility, survival of the pigs born, and milk production. All three of these factors contribute to a large extent to the total weaning weight of the respective litters and are of individual economic importance to the hog producer. Therefore, from the breeder's standpoint, it is important to know to...
متن کاملGenetic parameters for within-litter variation in piglet birth weight and change in within-litter variation during suckling.
The objective of this study was to ascertain whether maternal additive genetic variance exists for within-litter variation in birth weight and for change in within-litter variation in piglet weight during suckling. A further objective was to estimate maternal genetic correlations of these two traits with mortality, birth weight, growth, and number of piglets born alive. Data were obtained from ...
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ژورنال
عنوان ژورنال: Livestock Production Science
سال: 2002
ISSN: 0301-6226
DOI: 10.1016/s0301-6226(02)00012-x