Results 21 to 30 of about 562,730 (268)

On the Planarity of Graphs Associated with Symmetric and Pseudo Symmetric Numerical Semigroups

open access: yesMathematics, 2023
Let S(m,e) be a class of numerical semigroups with multiplicity m and embedding dimension e. We call a graph GS an S(m,e)-graph if there exists a numerical semigroup S∈S(m,e) with V(GS)={x:x∈g(S)} and E(GS)={xy⇔x+y∈S}, where g(S) denotes the gap set of S.
Yongsheng Rao   +4 more
doaj   +1 more source

Pigs lacking the SRCR5 domain of CD163 protein demonstrate heritable resistance to the PRRS virus and no changes in animal performance from birth to maturity

open access: yesFrontiers in Genome Editing
Porcine reproductive and respiratory syndrome (PRRS) is one of the world’s most persistent viral pig diseases, with a significant economic impact on the pig industry.
Clint Nesbitt   +10 more
doaj   +1 more source

Mendelian randomization analysis revealed a gut microbiota–mammary axis in breast cancer

open access: yesFrontiers in Microbiology, 2023
BackgroundObservational epidemiological studies suggested an association between the gut microbiota and breast cancer, but it remains unclear whether the gut microbiota causally influences the risk of breast cancer.
Shuwan Zhang   +9 more
doaj   +1 more source

Sow longevity: phenotypic time trends, the effect of litter size, and economic values

open access: yesFrontiers in Animal Science
We analyzed data of 371,343 PIC-Camborough® parent sows housed in 329 commercial farms across the world. From sow birthyear 2000 to 2024, litter size (total number born, TNB) steadily increased each year by 0.16 piglets per litter.
Pieter W. Knap   +2 more
doaj   +1 more source

Nitrogen Transformations in Broiler Litter-Amended Soils

open access: yesInternational Journal of Agronomy, 2012
Nitrogen mineralization rates in ten surface soils amended with (200 μg N g−1 soil) or without broiler litter were investigated. The soil-broiler litter mixture was incubated at 25±1∘C for 28 weeks.
Kokoasse Kpomblekou-A, Andrae Genus
doaj   +1 more source

Why breed disease-resilient livestock, and how?

open access: yesGenetics Selection Evolution, 2020
Background Fighting and controlling epidemic and endemic diseases represents a considerable cost to livestock production. Much research is dedicated to breeding disease resilient livestock, but this is not yet a common objective in practical breeding ...
Pieter W. Knap, Andrea Doeschl-Wilson
doaj   +1 more source

Trigger warnings – om undervisning och politisk gränshållning i 2020-talets sociala landskap

open access: yesHögre Utbildning, 2021
Debatten om ”trigger warnings” och ”trygga rum” berör alla universitetslärare, även dem som aldrig ställts inför dylika krav från studenter. Med utgångspunkt i den uppmärksammade konflikten på sexologutbildningen vid Malmö universitet våren 2021 ...
Rebecca Selberg
doaj   +1 more source

Selective advantage of implementing optimal contributions selection and timescales for the convergence of long-term genetic contributions

open access: yesGenetics Selection Evolution, 2018
Background Optimal contributions selection (OCS) provides animal breeders with a framework for maximising genetic gain for a predefined rate of inbreeding.
David M. Howard   +4 more
doaj   +1 more source

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