Linked Life Data

21214642

Source:http://linkedlifedata.com/resource/pubmed/id/21214642

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2011-1-10
pubmed:abstractText
Reduction in the variability of piglet birth weight within litter and increased piglet survival are key objective in schemes aiming to improve sow prolificacy. In previous studies, variation in birth weight was described by the sample standard deviation of birth weights within one litter, and the genetic impact has been proved. In this study, we additionally considered the sex effect on piglet's birth weight and on its variability. The sample variance of birth weights per litter separated by sex was assigned as a trait of the sow. Different transformations of the trait were fitted by linear and generalized linear mixed models. Based on 1111 litters from Landrace sows, the estimates of heritability for the different measures ranged from 11 to 12%. We analysed the influence of including birth weight of stillborn piglets on the variability of birth weight within litter. With omitted stillborns, the heritability was estimated approximately 2% higher than that in investigations of all born piglets, and the impact of sex on birth weight variability was increased. Because the proportion of intrapartum deaths is rather high, it is recommended to consider the total number of piglets born per litter when analysing birth weight variation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1439-0388
pubmed:author
pubmed:copyrightInfo
© 2010 Blackwell Verlag GmbH.
pubmed:issnType
Electronic
pubmed:volume
128
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
35-43
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Analysis of birth weight variability in pigs with respect to liveborn and total born offspring.
pubmed:affiliation
Leibniz Institute for Farm Animal Biology, Genetics and Biometry, Dummerstorf, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't