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Allometry of litter size in dog breeds [PDF]
Acta Veterinaria ScandinavicaLitter size varies among dog breeds and is related to body size. Generally, the relationship is described as small breeds having smaller litters, and larger breeds larger litters, though the trend does not extend to very large breeds.
Klara Hanefeld Egeriis +2 more
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Correlation of litter size traits [PDF]
Biotechnology in Animal Husbandry, 2016 Heredity and correlation of litter size traits were observed in 3693 litters, i.e. in 1622 daughters of two genotypes Swedish Landrace genotype - SL; and F1 ♀ SLxLW. The study included daughters (minimum ten daughters per sire) of 24 sires.
Radović Čedomir +6 more
doaj +4 more sources
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain [PDF]
The European Zoological Journal, 2018 Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY
V. Penteriani +10 more
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‘Heterosis’ in litter size of chimaeric mice [PDF]
Genetical Research, 1985 SUMMARYAggregation chimaeras were made from embryos of C57BL/6 and BALB/c mice. Chimaeric and control females were mated with ICR males at 8 weeks of age and their litter sizes were evaluated over a 5-month period after the first mating. Progeny tests showed that 18 of 27 chimaeras produced oocytes of both genotypes.
Hitoshi Mikami, Akira Ōnishi
openalex +3 more sources
Genetic study of litter size and litter uniformity in Landrace pigs [PDF]
Revista Brasileira de Zootecnia, 2020 We aimed to estimate litter size and litter uniformity genetic parameters and genetic trends of Landrace pigs at birth and at three weeks by using multitrait analyses for 2,787 litters.
Ederson Gomes Camargo +4 more
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Evolution of Litter Size: Proximate and Ultimate Mechanisms. [PDF]
Integr Comp BiolSynopsis Relative reproductive success and failure are the ultimate determinants of Darwinian fitness. As such, reproductive traits and variations therein have an immediate and considerable impact on the evolutionary trajectory of lineages.
Wilsterman K +4 more
europepmc +3 more sources
Genetic and Non-Genetic Factors Affecting Litter Size and Birth Weight of Rabbit in Minna, Niger State, Nigeria [PDF]
Animal Production: Indonesian Journal of Animal Production, 2012 . Genetic and non-genetic factors influencing litter size and birth weight of rabbit was evaluated using New Zealand White and Chinchilla breeds. Parameters measured were total number of kittens born per litter, number of litter born alive, live litter ...
SSA Egena, GN Akpa, IC Alemede, A Aremu
doaj +4 more sources
The Evolution of Primate Litter Size
HumansLitter size plays an essential role in mammalian evolution and is one of the most important factors determining whether an organism is deemed to have a ‘slow’ or ‘fast’ life history strategy.
Jack H. McBride, Tesla A. Monson
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The Role of TGF-β Signaling Pathway in Determining Small Ruminant Litter Size. [PDF]
Biology (Basel)Han Y, Cao G, Chen W, Wang C, Khan MZ.
europepmc +3 more sources
Animal, 2022 Sheep meat producers derive the majority of income from sales of weaned lambs, determined by flock conception rates, litter size, and lamb survival. Field data from commercial flocks can inform sensitivity analyses of the effect of litter size on flock ...
L. Farrell +4 more
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