Heritability
Genetic study of skin thickness and its association with postweaning growth in Nellore cattle: estimation of the genetic parameters
Authors: A.M. Maiorano1, M.C.S. Oliveira2, J.N.S.G. Cyrillo3, L.G. Albuquerque1,R.A. Curi4 and J.A.IIV. Silva4
The objective of the present study was to estimate genetic parameters for skin thickness (ST) and postweaning weight gain (PWG550) in Nellore cattle. Records were obtained from 152,392 Nellore animals born between 2001 and 2011. ST was measured in the posterior region of the animal’s scapula with a millimeter caliper. The animals were assigned to di.. Read More»
- Genet. Mol. Res. 15(1):
- gmr.15017124
- DOI:
- 10.4238/gmr.15017124
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds
Authors: C.A. Fernandes Santos1 and L.S. Boiteux2
Cowpea crop, through combining a range of essential minerals with high quality proteins, plays an important role in providing nutritional security to human population living in semi-arid regions. Studies on genetics of biofortification with essential minerals are still quite scarce, and the major objective of the present study was to provide genetic informat.. Read More»
- Genet. Mol. Res. 14(1):
- 2015.January.16.10
- DOI:
- 10.4238/2015.January.16.10
A general review of competition genetic effects with an emphasis on swine breeding
Authors: C.Y. Chen, R.K. Johnson, L.D. Van Vleck, S. Newman
A review of previous studies is presented on estimates of genetic parameters and responses to selection with traditional breeding approaches, on correlations between agonistic behavior and growth performance, and on theoretical frameworks for selection incorporating interactions among individuals and on practical methods for i.. Read More»
- Genet. Mol. Res. 6(3):
Inheritance of bacterial spot resistance in Capsicum annuum var. annuum
Authors: L.R.A. Silva, R. Rodrigues, S. Pimenta, J.W.S. Correa, M.S.B. Ara�ºjo, C.S. Bento and C.P. Sudr�©
Since 2008, Brazil is the largest consumer of agrochemicals, which increases production costs and risks of agricultural products, environment, and farmers’ contamination. Sweet pepper, which is one of the main consumed vegetables in the country, is on top of the list of the most sprayed crops. The bacterial spot, caused .. Read More»
- Genet. Mol. Res. 16(2):
- gmr16029631
- DOI:
- 10.4238/gmr16029631
Use of weaning management group as a random effect for a more robust estimation of genetic parameters for post-weaning traits in Nellore cattle
Authors: V.B. Pedrosa, J.P. Eler, J.B.S. Ferraz and E. Groeneveld
Data from 69,525 animals were used to compare two types of analyses, one of them having the weaning management group (WEMANG) included as an effect in the contemporary group (F_WEMANG) and the other considering the weaning management group as a random effect, not related to the mathematical model (R_WEMANG) for post-weaning tr.. Read More»
- Genet. Mol. Res. 13(3):
- 2014.February.21.7
- DOI:
- 10.4238/2014.February.21.7
Environmental and genetic factors affecting the weaning-estrus interval in sows
Authors: C.D.S. Leite, J.F. Lui, L.G. Albuquerque and D.N.M. Alves
We examined the effects of environmental and genetic factors on the weaning-to-estrus interval (WEI) in sows. In order to perform the analyses of the environmental factors, 8104 observations of the 1st to the 6th WEI were carried out, while 6548 observations of the 1st to the 3rd WEI were carried out for the analyses of geneti.. Read More»
- Genet. Mol. Res. 10(4):
- 2011.November.4.2
- DOI:
- 10.4238/2011.November.4.2
Estimation of genetic parameters and variance components for growth traits in Romosinuano cattle in the Colombian humid tropics
Authors: Sarmiento RM and Garcia JP
(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 p.. Read More»
- Genet. Mol. Res. 6(3):
Genetic parameters for pre-weaning traits in Braunvieh cattle
Authors: D.C. Cucco J.B.S. Ferraz L.F.B. Pinto J.P. Eler J.C.C. Balieiro E.C. Mattos
The objective of this study was to estimate genetic parameters for pre-weaning traits of Braunvieh cattle raised under tropical conditions in Brazil. The weight and weight gain parameters were birth weight (BW, N = 9955), weight at 120 days of age (W120, N = 5901), weaning weight at 205 days (WW, N = 6970), weight gain from bi.. Read More»
- Genet. Mol. Res. 8(1):
- vol8-1gmr572
- DOI:
- 10.4238/vol8-1gmr572
Phenotypic and genetic parameters compared during repeated measures of longissimus muscle area and subcutaneous fat thickness in Nelore cattle
Authors: T.R. Pinheiro, M.E.Z. Mercadante, L.G. Albuquerque, J.N.S.G. Cyrillo and R.H. Branco
Real-time ultrasound is currently used for in vivo carcass evaluation of beef cattle. We estimated heritability and repeatability coefficients for ultrasound-measured carcass traits in Nelore cattle. We measured longissimus muscle area, backfat thickness, and rump fat thickness in male and female animals ranging in age from 10.. Read More»
- Genet. Mol. Res. 10(4):
- 2011.November.29.5
- DOI:
- 10.4238/2011.November.29.5
Diversity of pea (Pisum sativum) accessions based on morphological data for sustainable field pea breeding in Argentina
Authors: I. Gatti, M.A. Esp�³sito, P. Almir�³n, V.P. Cravero and E.L. Cointry
We characterized 13 accessions of dry peas of different origins from various growing regions in Argentina, based on three replications of 20 plants cultivated in 2009 and 2010 in a greenhouse, with the objective of selecting those with favorable characteristics for use in breeding programs. Significant differences were found f.. Read More»
- Genet. Mol. Res. 10(4):