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Sex ratios at sexual maturity and longevity: Evidence from Swedish register data
longevity mortality sex ratios
2014/11/25
Background: This study tests the recently proposed hypothesis that the contextual sex ratio at sexual maturity is related to longevity. Previous empirical research in the United States has shown that ...
Sex ratios at sexual maturity and longevity: Evidence from Swedish register data
longevity mortality sex ratios
2014/11/25
Background: This study tests the recently proposed hypothesis that the contextual sex ratio at sexual maturity is related to longevity. Previous empirical research in the United States has shown that ...
Genes found linking sexual maturity to body fat in women
Genes sexual maturity body fat women
2011/1/5
An international group of scientists, including researchers at the Medical Research Council (MRC), has discovered 30 genes that control the age at which girls reach sexual maturity. They found that ma...
Effect of Exogenous Administration of Tamoxifen on Hormonal Profile and Sexual Maturity in Indian Native Kadaknath Fowl
Kadaknath Egg Production Steroid Hormone Ovary Oviduct
2016/5/3
The effect of exogenous administration of tamoxifen (TAM) on hormonal profile and sexual maturity in Indian native Kadaknath (KN) fowl was investigated. Day-old chicks from the same hatch were randoml...
Effect of Breed, Heterosis and Sex on Body Weight, and Glutathione Peroxidase Activities in Red Blood Cell Haemolysate and Blood Plasma at the Age of Sexual Maturity in Chickens
body weight breed glutathione peroxidase heteroxidase sex
2009/7/30
The purpose of the present study was to collect information about the possible genetic background of glutathione peroxidase (GSHPx) activity in four pure breeds and their crosses of chickens, and its ...
Canonical Correlation Analysis for Estimation of Relationships between Sexual Maturity and Egg Production Traits upon Availability of Nutrients in Pullets
Canonical Correlation Analysis Canonical Variable Sexual Maturity Nutrient Intake Egg Production Layer Pullet
2016/4/28
In this study, canonical correlation analysis (CCA) was applied to estimate the relationship between three different sexual maturity traits (X set: days to first egg (DFE), weight of the first egg (WF...
Genetic Parameters Estimated for Sexual Maturity and Weekly Live Weights of Japanese Quail (Coturnix coturnix japonica)
Genetic Parameter Maternal Effect Japanese Quail REML Age at Sexual Maturity Weekly Weights
2016/4/25
Covariance components and genetic parameters of weekly live body weight from hatching to six weeks of age and age of sexual maturation were estimated in a laying type Japanese quail line. The univaria...
Canonical correlation analysis for studying the relationship between egg production traits and body weight, egg weight and age at sexual maturity in layers
canonical correlation egg production body weight egg weight age at sexual maturity
2015/6/1
In this study, canonical correlation analysis was applied to layer data to estimate the relationships of egg production with age at sexual maturity, body weight and egg weight. For this purpose, it wa...