Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Pre-weaning mortality"”.
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The impact of gestation sow housing system (individual vs. group) on the reproductive performance of sows & the effect of farrowing pen size on pre-weaning mortality
… units), and a higher (P < 0.05) piglet pre-weaning mortality (1.2 percentage units) and sow removal rate (5.7 percentage units) than those housed in individual stalls. This study will follow females through the 5th parity and the additional data will help understand the effect of housing …
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The impact of sow gestation housing system (individual vs. group) on the reproductive performance of sows across 6 parities & the effect of farrowing pen size on pre-weaning mortality
… (P > 0.05) of housing treatment on days from weaning to breeding, conception and farrowing rate, number of piglets born alive, mummified, total born, and weaned, piglet and litter weights (at birth and weaning), or the percentage of sows that were euthanized, died, or culled during the study. …
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Methods to reduce rectal temperature decline of newborn piglets and the effect of cross-fostering strategies on piglet pre-weaning growth and mortality
… Lower birth weight piglets have higher levels of mortality, particularly associated with hypothermia and starvation. Larger litters often exceed the number of functional teats, increasing competition for teat access, and low birth weight piglets have a reduced ability to compete compared to …
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Evaluation of the effects of birth order and other influencing factors on pre-weaning piglet mortality under commercial conditions
… was to evaluate the effects of birth order on pre-weaning mortality and to identify factors which could influence piglet survival to weaning. A study of 191 litters born over a two-month period was carried out in two commercial facilities; piglets were allotted to one of four treatments (1. …
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Impact of the implementation of the mcrebel management program in a commercial breed-to-wean unit following an infection with porcine reproductive and respiratory syndrome
… of the McRebel management program on pre-weaning mortality and timing of increase in the percentage of litters testing negative for the Porcine Reproductive and Respiratory Syndrome (PRRS) virus under commercial conditions. The study was carried out at a breed-to-wean facility that had …
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Dispersal and dispersion of southern elephant seals at Marion Island
… disturbance, natal harem size and natal harem pre-weaning mortality. A number of hypotheses are proposed to explain the reasons behind the results found, and the direction of future research concerning the movements of southern elephant seals and their choice of terrestrial environment is …
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Engineering solutions to address several current livestock and poultry housing challenges
… industries. Example challenges include: 1) high pre-weaning mortality of neonatal piglets in typical farrowing swine facilities, 2) maintaining egg production and sufficient well-being for laying hens under heat stress events, and 3) compromised air quality issues in most poultry housing systems. …
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Sow and piglet blood glucose levels over the farrowing period and relationships with sow and litter parameters
… piglets at birth have been linked to increased pre-weaning mortality. This study used 32 sows and gilts and 443 piglets in a cross-sectional survey to evaluate the effects of various sow and litter parameters on sow blood glucose levels on the day of farrowing, and identify factors associated …
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Investigating the effects of free lactation crates on sow and piglet welfare
… which are widely used in commercial pig farming, present major animal welfare problems. Sows are severely confined, being only able to stand up and lie down and not turn around for a period of five weeks around farrowing. This study compared the welfare of sows and piglets housed in two types of …
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OMICS APPROACHES FOR OMEGA-6/OMEGA-3 POLYUNSATURATED FATTY ACID RATIO IN PIGS
… n-6/n-3 PUFA ratios, porcine transcriptome expression, and biological processes related to PUFA metabolism, we performed RNA-Seq and microRNA-Seq on longissimus dorsi muscle samples from 20 Iberian x Duroc pigs with extreme values for n-6/n-3 FA ratio and identified differentially expressed …
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Identifying, understanding and harnessing the beneficial impact of nutritional interactions to optimise the performance and carcass quality of low birth weight pigs
… lactation feed intake, as well as tailoredpost-weaning feeding regimes. </p><p class="MsoNormal"><br/><b>The significance of low birth weight pigs on farms </b></p><p class="MsoNormal"><b><br/></b>Due to the lack of recent data reporting the lifetimeperformance of commercially reared pigs born …