Research Article

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11/22/2013
(Co)variance components; Body weight; Heritability; Maternal effects

Weight records of Simmental beef cattle were used in a genetic evaluation of growth with and without embryo transfer (ET). A random regression model in which ET individuals were excluded (RRM1) contained 29,510 records from 10,659 animals, while another model that did not exclude these animals (RRM2) contained 62,895 records from 23,160 animals. The fixed and random regressions were ... more

R.R. Mota; P.S. Lopes; L.F.A. Marques; L.P. Silva; C. Pessoa; A. Torres; M.D.V. Resende
12/04/2014
Body weight; Breast fillet; Breast weight; Heritability; Wing weight

The objective of this study was to estimate the genetic and environmental parameters for carcass, carcass part, and organ weights in a paternal strain of broiler chickens that was selected mainly for body weight at 42 days of age (BW42) to provide support for poultry genetic improvement programs. A total of 1448 chickens were used that resulted from the expansion of a pure paternal strain ... more

G.C. Venturini; V.A.R. Cruz; J.O. Rosa; F. Baldi; E. Faro; M.C. Ledur; J.O. Peixoto; D.P. Munari
11/07/2013
Apis mellifera; Body weight; Longevity; Queen; Reproduction

There has been much speculation about which phenotypic traits serve as reliable indicators of productivity in queen honeybees (Apis mellifera). To investigate the predictive value of queen body weight on colony development and quality, we compared colonies in which queens weighed less than 180 mg to those in which queens weighed more than 200 mg. Both groups contained naturally ... more

D.A. De Souza; M.A.F. Bezzera-Laure; T.M. Francoy; L.S. Gonçalves
04/17/2013
Body weight; Cattle; Dapper1 gene; F-PCR-RFLP; Haplotype; SNPs

The Dapper1 protein plays important role in multiple developmental processes via negative modulation of the Wnt signaling pathway. We detected variations in Dapper1 in 1185 individuals from 5 Chinese cattle breeds and determined their effects on bovine body weight. Two silent mutations (g.8344C>T and g.8428C>T) in exon 6 along with two substitutions (g.10513A>G and g. ... more

J. Wang; C. Wang; Y. Gao; X.Y. Lan; C.Z. Lei; J.Q. Wang; H. Chen
04/19/2012
Abdominal fat traits; Body weight; Chicken; Microsatellite marker; NEAURP; Quantitative trait loci

Body weight and abdominal fat traits in meat-type chickens are complex and economically important factors. Our objective was to identify quantitative trait loci (QTL) responsible for body weight and abdominal fat traits in broiler chickens. The Northeast Agricultural University Resource Population (NEAURP) is a cross between broiler sires and Baier layer dams. We measured body weight and ... more

S.Z. Wang; X.X. Hu; Z.P. Wang; X.C. Li; Q.G. Wang; Y.X. Wang; Z.Q. Tang; H. Li
10/22/2002
Beef cattle; Heritability; Selection; Tropics; Weights

(Co)variance components and genetic parameters were estimated for body weights of an elite Brahman herd under a designed, supervised management and genetic program, including strategic artificial insemination (AI). Restricted maximum likelihood methods were used with a univariate animal model for birth weight (BW) and a bivariate model for weaning weight (205-day weight, 205W) and 18 ... more

D. Plasse; O. Verde; J. Arango; L. Camaripano; H. Fossi; R. Romero; C.Rodriguez M.; J.L. Rumbos
09/23/2002
Capsicum annuum; Gene action; Heritability; Meloidogyne incognita; Monogenic inheritance; Resistance

Root-knot nematodes of the genus Meloidogyne are important pathogens affecting vegetable crop production in Brazil and worldwide. The pepper species Capsicum annuum includes both hot and sweet peppers; very little emphasis has been placed on breeding sweet peppers for nematode resistance. We report on the inheritance of resistance to Meloidogyne incognita ( ... more

F. de Souza-Sobrinho; W.Roberto Maluf; L.A.A. Gomes; V.Paulo Campos
03/28/2002
Asparagus officinalis L.; Heritability; Parent-offspring regression method; Selective criteria

To estimate the heritability values of characters frequently used as selective criteria, 32 half-sib families obtained from selected plants of three populations of the asparagus variety Argenteüil were evaluated in a randomized complete block design. The following characters were measured: days to emergence of the first spear, number and diameter of spears, number of stalks, plant ... more

V. Cravero; E. Cointry; I. Gatti; F.López Anido
09/30/2004
Carcass traits; Cattle; Heritability; Slaughter end points

We present estimates of heritability for carcass traits of cattle published in the scientific literature. Seventy-two papers published from 1962 to 2004, which reported estimates of heritability for carcass traits, were reviewed. The unweighted means of estimates of heritability for 14 carcass traits by slaughter end point (age, weight, and fat depth) were calculated. Among the three end ... more

A.Ríos Utrera; L.Dale Van Vleck
08/07/2007
Correlation; Genetic; Growth; Heritability

(Co)variance components and genetic parameters were estimated for body weights of a Romosinuano herd located in Sinú Valley, Cordoba, Colombia. Restricted maximum likelihood methods were used with a univariate animal model for birth weight, weaning weight (270 days), 16-month weight (480 days), weaning daily gain, and post-weaning daily gain. Models included random animal direct and maternal ... more

R.M. Sarmiento; J.P. Garcia

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