Results 21 to 30 of about 294,374 (349)
Single Nucleotide Polymorphisms in the HIRA Gene Affect Litter Size in Small Tail Han Sheep
Animals, 2018 Maintenance of appropriate levels of fecundity is critical for efficient sheep production. Opportunities to increase sheep litter size include identifying single gene mutations with major effects on ovulation rate and litter size. Whole-genome sequencing
Mei Zhou +13 more
doaj +1 more source
Genetic variants of the bone morphogenetic protein gene and its association with estrogen and progesterone levels with litter size in Awassi ewes [PDF]
Iraqi Journal of Veterinary Sciences, 2022 This research aimed to assess the genetic polymorphism of the BMP15 gene concerning sex hormone levels and birth type in Awassi ewes. The genome DNA of 138 Awassi ewes was isolated (52 ewes produced a singleton and 86 produced twins). The BMP15 gene exon-
Marwa A. Ali +2 more
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A genetic tool to manipulate litter size [PDF]
Frontiers in Zoology, 2014 Experimental litter size manipulations are often not problem free. Typically conducted shortly after birth or oviposition, they do not account for the energy already invested into the production of the offspring. Such effects make it difficult to interpret the results from experimental litter size manipulations and therefore to study optimality of ...
Ferrari Manuela +2 more
openaire +4 more sources
Selection for litter size components: a critical review [PDF]
Genetics Selection Evolution, 1997 The measurement of component variables such as the number of ova shed (OR) and its inclusion in a linear index with litter size (LS) or prenatal survival has been suggested in order to accelerate genetic progress for LS. Despite optimistic theoretical predictions, however, in no selection experiment has the advantage of including OR in an index as ...
Perez-Enciso, Miguel +1 more
openaire +5 more sources
Selection for environmental variance of litter size in rabbits
Genetics Selection Evolution, 2017 Background In recent years, there has been an increasing interest in the genetic determination of environmental variance. In the case of litter size, environmental variance can be related to the capacity of animals to adapt to new environmental ...
Agustín Blasco +4 more
doaj +1 more source
Sample size requirements for riverbank macrolitter characterization
Frontiers in Water, 2023 Anthropogenic litter is omnipresent in terrestrial and freshwater systems, and can have major economic and ecological impacts. Monitoring and modeling of anthropogenic litter comes with large uncertainties due to the wide variety of litter ...
Sjoukje I. de Lange +14 more
doaj +1 more source
Improving basic and translational science by accounting for litter-to-litter variation in animal models [PDF]
, 2013 Background: Animals from the same litter are often more alike compared with animals from different litters. This litter-to-litter variation, or "litter effects", can influence the results in addition to the experimental factors of interest.
Essioux, Laurent, Lazic, Stanley E.
core +2 more sources
Indian Journal of Animal Sciences, 2020 Genetic advancement for the modern swine industry is primarily accomplished through the use of reproductive biotechnology, mainly artificial insemination (AI).
MAHAK SINGH +3 more
doaj +1 more source
EFFECT OF INBREEDING ON THE PERFORMANCE OF LARGE WHITE YORKSHIRE SOWS [PDF]
Journal of Veterinary and Animal Sciences, 2004 Data relating to 130 sows, 19 boars from 400 farrowings spread over a period from 1984 to 1992 were utilized to study genetic and non-genetic effects on variation of litter size at birth and litter size at weaning.
M. Vasundhara devi +4 more
doaj
Transcriptomic Analysis of Ovaries from Pigs with High And Low Litter Size.
PLoS ONE, 2015 Litter size is one of the most important economic traits for pig production as it is directly related to the production efficiency. Litter size is affected by interactions between multiple genes and the environment.
Xiaodong Zhang +6 more
doaj +1 more source