Research Article

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02/02/2010
Bayesian approach; Beef cattle; Bos indicus; Genetic correlation; Growth traits; Reproduction

Survival or longevity is an economically important trait in beef cattle. The main inconvenience for its inclusion in selection criteria is delayed recording of phenotypic data and the high computational demand for including survival in proportional hazard models. Thus, identification of a longevity-correlated trait that could be recorded early in life would be very useful for selection ... more

M.H. Van Melis; H.N. Oliveira; J.P. Eler; J.B.S. Ferraz; J. Casellas; L. Varona
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Growth traits; Insulin-like growth factor II; Polymorphism; Yak

Insulin-like growth factor II (IGF-II) plays a key role in mammalian growth and is involved in stimulating fetal cell division, differentiation, and metabolic regulation. IGF-II is considered a candidate gene for genetic markers of growth and carcass traits. Therefore, in this study, the associations of single nucleotide polymorphisms (SNPs) in the IGF-II gene region with growth and ... more

Y.F. Zeng; X.Z. Ding; S.R. Cheng; S.J. Yu
03/15/2013
Growth traits; IGF-I; PCR-RFLP; Pectoralis major; Synthetic chicken; Thai native chicken

Four Thai synthetic chicken lines (Kaen Thong, Khai Mook Esarn, Soi Nin, and Soi Pet) originated from Thai native and exotic commercial chickens were evaluated for their growth and carcass traits with the purpose of developing a Thai broiler breeding program. Insulin-like growth factor I (IGF-I) gene is known to play an important role in growth, proliferation and differentiation ... more

N. Promwatee; B. Laopaiboon; T. Vongpralub; Y. Phasuk; S. Kunhareang; W. Boonkum; M. Duangjinda
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Genetic diversity; Growth traits; Inter-simple sequence repeat; Larix gmelinii (Rupr.); Random amplified polymorphic DNA

Dahurian larch (Larix gmelinii), a deciduous conifer, is the northernmost tree, native to eastern Siberia and nearby regions of China. We used growth traits and molecular markers to assess genetic variation in different L. gmelinii growing regions; 105 individual samples were collected from seven regions of the Qingshan Forestry Centre, Heilongjiang Province, China. The ... more

L. Zhang; H.G. Zhang; X.F. Li
02/08/2012
Arabi sheep; Genetic correlation; Genetic parameters; Growth traits; Heritability

The objective of the present study was to estimate genetic parameters for body weight at different ages in Arabi sheep using data collected from 1999 to 2009. Investigated traits consisted of birth weight (N = 2776), weaning weight (N = 2002) and weight at six months of age (N = 1885). The data were analyzed using restricted maximum likelihood analysis, by fitting univariate and ... more

B. Shokrollahi; H. Baneh
09/05/2014
DNA sequencing; GH gene; Growth traits; Polymerase chain reaction single-strand conformation polymorphism; Polymorphism; Sheep

The growth hormone gene plays an important role in the physiological function of an organism. The current study aimed to investigate the correlation between polymorphisms in the 5ꞌ regulatory region, exon 4, and 3ꞌ untranslated region (UTR) of the sheep GH gene and sheep growth traits. The DNA from 510 adult sheep was analyzed by DNA sequencing and polymerase chain reaction single ... more

J.L. Jia; L.P. Zhang; J.P. Wu; Z.J. Ha; W.W. Li
08/15/2014
Animal production; Growth traits; Molecular markers; PCR-RFLP

The aim of this study was to determine the association between a polymorphism in intron 3 of the bovine growth hormone (BGH) gene and growth traits related to the start of the reproductive life of Holstein heifers. This research was conducted using 480 Holstein heifers belonging to eight herds in three municipalities in the Department of Antioquia (Colombia). The phenotypic information ... more

J. Arango; J.J. Echeverri; A. López
08/07/2014
Correlation analysis; Growth traits; Multiple regression equation; Path analysis; Scylla paramamosain

The mud crab (Scylla paramamosain) is considered a potentially important marine crab species for selective breeding. Here, we first examined sex ratio and differences in 16 growth traits between females and males in a G1 population of S. paramamosain, and we then analyzed the correlation between these growth traits and their effects on body weight (BW). Of ... more

W. Jiang; H.Y. Ma; C.Y. Ma; S.J. Li; Y.X. Liu; Z.G. Qiao; L.B. Ma
04/29/2014
Chicken; FADS2; Fatty acid; Growth traits; Haplotype; Single nucleotide polymorphisms

Delta-6 fatty acid desaturases are rate-limiting desaturases involved in metabolic processes of fatty acids, and they are encoded by the FADS2 gene. In the current study, an F2 resource population of Gushi chickens crossed with Anak broilers was used to investigate the genetic effects of the chicken FADS2. Two adjacent single nucleotide polymorphisms (SNPs) ( ... more

S.K. Zhu; Y.D. Tian; S. Zhang; Q.X. Chen; Q.Y. Wang; R.L. Han; X.T. Kang
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

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