Results 31 to 40 of about 71,268 (162)
Majalah Ilmiah PeternakanThis study aims to evaluate litter size of different ages males with different parent parity in smallholder pig far- ming, used 3 males of different ages (P1, P2, P3) and 18 sows of parity 1 – 4 (I1, I2, I3 and I4) with a 3 x 4 factorial RAL experimental
SURANJAYA I. G. +2 more
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Genetics Selection Evolution, 2006 The aim of this research was to explore the genetic parameters associated with environmental variability for litter size (LS), litter weight (LW) and mean individual birth weight (IW) in mice before canalisation.
Salgado Concepción +4 more
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Correlated Response to Selection for Litter Size Residual Variability in Rabbits’ Body Condition
Animals, 2020 A divergent selection experiment for residual variance of litter size at birth was carried out in rabbits during twelve generations. Residual variance of litter size was estimated as the within-doe variance of litter size after pre-correction for year ...
Iván Agea +5 more
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No evidence for a trade-off between reproductive investment and immunity in a rodent. [PDF]
PLoS ONE, 2012 Life history theory assumes there are trade-offs between competing functions such as reproduction and immunity. Although well studied in birds, studies of the trade-offs between reproduction and immunity in small mammals are scarce.
Yan-Chao Xu, Deng-Bao Yang, De-Hua Wang
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Development of a new grading system to assess the foster performance of lactating sows
Animal, 2022 Increasing litter size has created the need for more sophisticated, accurate, and welfare-oriented systems for assessing the foster performance of lactating sows.
L.S. Trost +7 more
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Genetic parameter estimates for litter traits in Jakhrana breed of Indian goat
Reproduction and Breeding, 2023 The litter size and litter weight are the most important indicators of growth production system in goats as they are directly related to the survival and growth of the kids.
Yogesh C. Bangar +2 more
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Size dependent differences in litter consumption of isopods: preliminary results
ZooKeys, 2012 A series of experiments were applied to test how leaf orientation within microcosms affect consumption rates (Experiment 1), and to discover intra-specific differences in leaf litter consumption (Experiment 2) of the common isopod species Porcellio ...
Ferenc Vilisics +2 more
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A review of factors influencing litter size in Irish sows
Irish Veterinary Journal, 2007 Many factors influence litter size. These include genetics, gilt management, lactation length, parity distribution, disease, stress and boar fertility. In the past 20 years, litter size in Irish sows has increased by only one pig.
Lawlor Peadar G, Lynch P Brendan
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Genetic analysis of litter size in mice
Journal of Veterinary Medical Science, 2015 We performed quantitative trait locus (QTL) mapping analysis for litter size (total number of pups born and/or number of pups born alive) in 255 backcross mice derived from C57BL/6J and RR/Sgn inbred mice. We identified one significant QTL on chromosome 7 and 4 suggestive QTLs on chromosomes 3, 5, 10 and 13.
openaire +3 more sources
EcosphereSeventy‐five years ago, Lack proposed that there should be an optimal clutch size shared by all individuals in a population and favored by natural selection, which maximizes the number of recruited offspring.
Marwan Naciri +7 more
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