Results 31 to 40 of about 5,319,582 (307)

Adaptabilidade e estabilidade da produção de borracha e seleção em progênies de seringueira Adaptability and stability of rubber production and selection in rubber tree progenies

open access: yesPesquisa Agropecuária Brasileira, 2009
Os objetivos deste trabalho foram determinar a interação genótipo x ambiente e a estabilidade e adaptabilidade da produção de borracha em progênies de seringueira (Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.), bem como estimar o ganho genético com
Cecília Khusala Verardi   +3 more
doaj   +1 more source

Relationship between sire predicted transmitting ability for daughter pregnancy rate and daughter’s reproductive performance and milk production in Japanese dairy herds

open access: yesThe Journal of Reproduction and Development, 2020
Modern genetic improvement in dairy cattle is directed towards improvement of fertility; however, reproduction traits generally exhibit a genetic antagonism with milk yield.
Keisuke KOYAMA, Takayoshi TAKAHASHI
doaj   +1 more source

Perfect Simulation From Nonneutral Population Genetic Models: Variable Population Size and Population Subdivision. [PDF]

open access: yes, 2006
We show how the idea of monotone coupling from the past can produce simple algorithms for simulating samples at a nonneutral locus under a range of demographic models.
Fearnhead, Paul
core   +2 more sources

Is the human species still evolving?: to where?

open access: yesGenetics and Molecular Biology, 2012
The questions of the title have been considered in several ways. First, indications of the traits which make us humans were considered. Then the behavior and culture concepts were examined, and the biology and culture interactions discussed, with an ...
Francisco M. Salzano
doaj   +1 more source

Selection for Growth and Precocity Alters Muscle Metabolism in Nellore Cattle

open access: yesMetabolites, 2020
To clarify the relationship between beef genetic selection for growth and precocity with muscle metabolism and metabolites, we performed metabolomic analysis using Longissimus lumborum (LL) muscle from Nellore cattle with divergent selection for these ...
Nara Regina Brandão Cônsolo   +9 more
doaj   +1 more source

The genetical theory of kin selection [PDF]

open access: yesJournal of Evolutionary Biology, 2011
AbstractNatural selection operates both directly, via the impact of a trait upon the individual’s own fitness, and indirectly, via the impact of the trait upon the fitness of the individual’s genetically related social partners. These effects are often framed in terms of Hamilton’s rule,rb − c > 0, which provides the central result of social ...
A. GARDNER, S. A. WEST, G. WILD
openaire   +2 more sources

Responses of North American and New Zealand strains of Holstein–Friesian dairy cattle to homeostatic challenges during early and mid-lactation

open access: yesAnimal, 2009
This study investigated the physiological basis of differences in nutrient partitioning between the North American (NA) and New Zealand (NZ) strains of Holstein–Friesian cattle by determining the responses to homeostatic challenges at two stages of ...
J. Patton   +3 more
doaj   +1 more source

Innate immunity in chicken lines developed by EMBRAPA Suínos e Aves: antimicrobial activity of macrophages and serum

open access: yesRevista Brasileira de Zootecnia, 2021
The objective of this study was to compare the antimicrobial activity of macrophages and serum in laying hen (MM, CC, and CCc) and broiler chicken lineages (TT and LL). Macrophages were evaluated for phagocytic and antimicrobial activity.
Miriele Caroline da Silva   +6 more
doaj   +1 more source

Genetics Select [PDF]

open access: yesCell, 2010
Faster, smaller, easier, and better—DNA sequencing technologies have improved by quantum leaps in the past decade. This Genetics Select highlights recent studies that demonstrate how these technological advances have greatly expanded the scope and power of human genetics, especially in the blossoming fields of personalized medicine and palaeogenetics.
openaire   +1 more source

Sire effect on early and late embryonic death in French Holstein cattle

open access: yesAnimal, 2015
We investigated the effect of maternal sire on early pregnancy failure (between D0, day of insemination and D90) in their progeny during the first and second lactations (n=3508) in the Holstein breed.
D. Ledoux   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy