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Mapping QTLs on chicken chromosome 1 for performance and carcass traits in a broiler x layer cross
(Blackwell Publishing, 2006-04-01)
With the objective of mapping quantitative trait loci (QTLs) for performance and carcass traits, an F-2 chicken population was developed by crossing broiler and layer lines. A total of 2063 F-2 chicks in 21 full-sib families ...
Selection indexes using principal component analysis for reproductive, beef and milk traits in Simmental cattle
(2021)
Selection indexes in dual-purpose cattle should include beef, milk and reproductive traits. The principal component analysis is a multivariate technique that allows researchers to explore relationships between explanatory ...
Fruit selection by Andean forest birds: influence of fruit functional traits and their temporal variation
(Wiley Blackwell Publishing, Inc, 2016-09)
Fruit selection, i.e., the consumption of fruits disproportionately to their availability, results from the interaction between diet preferences and ecological factors that modify them. We assessed the importance of ...
Identification of superior genotypes and soybean traits by multivariate analysis and selection index
(Univ Federal Ceara, Dept Geol, 2018-07-01)
The selection of superior genotypes of soybean is a complex process, thus exploratory multivariate techniques can be applied to select genotypes analyzing the agronomic traits altogether, increasing the chance of success ...
Identification of superior genotypes and soybean traits by multivariate analysis and selection index
(2018-07-01)
The selection of superior genotypes of soybean is a complex process, thus exploratory multivariate techniques can be applied to select genotypes analyzing the agronomic traits altogether, increasing the chance of success ...
Phenotypic, genetic and environmental parameters for traits related to femur bone integrity and body weight at 42 days of age in a broiler population
(Poultry Science Association Inc., 2015-11-01)
Intense selection among broilers, especially for performance and carcass traits, currently favors locomotion problems and bone resistance. Conducting studies relating to development and growth of bone tissue in broilers ...
Assessment of correlational selection on tolerance and resistance traits in a host plant-parasitic plant interaction
(Springer, 2001)
Resistance and tolerance are considered to be different plant strategies against disease. While resistance traits prevent hosts becoming parasitized or reduce the extent of parasitism, tolerance traits reduce the fitness-impact ...
Genetic parameter estimation for pre- and post-weaning traits in Brahman cattle in Brazil
(Springer, 2014-10-01)
Beef cattle producers in Brazil use body weight traits as breeding program selection criteria due to their great economic importance. The objectives of this study were to evaluate different animal models, estimate genetic ...
Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
(Evolutionary Ecology Ltd, 2014-08)
Background: In mutualistic interactions of fleshy-fruited plants and seed-dispersing birds, dispersers act as natural selection agents on fruit display traits. Bird-mediated phenotypic selection on maternal and seed level ...
Body condition score of Nellore beef cows: a heritable measure to improve the selection of reproductive and maternal traits
(2015)
Despite the economic importance of beef cattle production in Brazil, female reproductive performance, which is strongly associated with production efficiency, is not included in the selection index of most breeding programmes ...