scholarly journals Estimation of Genetic Parameters for Average Daily Gain and Carcass Traits of Hanwoo

2012 ◽  
Vol 54 (5) ◽  
pp. 317-321
Author(s):  
Byoungho Park ◽  
Taejeong Choi ◽  
Jae Gwan Choi ◽  
Yun Ho Choy ◽  
Kwang Hyun Cho ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Daily Gain ◽  
Estimation Of Genetic Parameters

scholarly journals Genetische Beziehungen für das Merkmal Lebenstagszunahme in einem Dreirassenkreuzungsprogramm beim Schwein

2002 ◽  
Vol 45 (5) ◽  
pp. 481-490
Author(s):  
R. Fischer ◽  
U. Müller ◽  
U. Bergfeld
Keyword(s):  
Parameter Estimation ◽  
Genetic Association ◽  
Genetic Parameters ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Point Of View ◽  
Large White ◽  
Variable Model ◽  
Daily Gain ◽  
Estimation Of Genetic Parameters

Abstract. Title of the paper: Genetic association for daily gain (lifetime) in an crossbreeding program The aim of this investigation is an analysis of the crossing structure of a three-race crossing program and the genetic relations with respect to the trait average daily gain. For this purpose we examine the genetic relations for their usefulness for a estimation of genetic parameters and breeding values. Finally a parameter estimation is carried out. The data basis consists of 1757 German Large White performances, 34980 Landrace performances and 2775 Pietrain performances in pure breed as well as 92757 performances of the crossings of the mother lines and altogether 13854 Pietrain crossings (1997 PI x DL and 11857 PI x DEDL). The heritabilities for the variable daily gain are in the range from 0.17 to 0.31. The genetic correlations between the mother races and their crossbreedings are around 0.9. Between the pure Pietrain and the Pietrain crossings these values reach only 0.7. Within the two groups of crossings with Pietrains the genetic correlations are almost one. From the genetic point of view it is possible to put together the mother races and their crossings as well as the Pietrain crossings. Thus, for this trait it is sufficient to consider a three variable model with separate investigation of the mother races, the Pietrains and the Pietrain crossings.

scholarly journals Estimation of genetic parameters for average daily gain using models with competition effects

2008 ◽  
Vol 86 (10) ◽  
pp. 2525-2530 ◽  
Author(s):  
C. Y. Chen ◽  
S. D. Kachman ◽  
R. K. Johnson ◽  
S. Newman ◽  
L. D. Van Vleck
Keyword(s):  
Genetic Parameters ◽  
Average Daily Gain ◽  
Competition Effects ◽  
Daily Gain ◽  
Estimation Of Genetic Parameters

scholarly journals Estimation of genetic parameters and genotype effects for crossing constructions of Hungarian Pigs

2013 ◽  
pp. 57-60
Author(s):  
Henrietta Nagyné Kiszlinger ◽  
Marcell Molnár ◽  
István Nagy
Keyword(s):  
Animal Models ◽  
Environmental Factors ◽  
Field Test ◽  
Genetic Parameters ◽  
Average Daily Gain ◽  
Correlation Coefficients ◽  
Lean Meat ◽  
Daily Gain ◽  
Genotype Effects ◽  
Estimation Of Genetic Parameters

Authors estimated the genetic parameters and genotype effects of average daily gain (ADG), age (AGE) and lean meat percentage (LMP) using the field test data of Pietrain (Pi), Duroc (Du), Hampshire (Ha) pigs and their crosses. Data was collected by the Agricultural Agency of Administration between 1998 and 2010 originating from 68 herds. Datasets of the different crossing combinations (Pi, Du, Pi × Du; Pi, Ha Pi × Ha) were evaluated separately using bivariate animal models. The estimated heritabilities were moderately low: 0.24–0.29, 0.22–0.26 and 0.18–0.19 for average daily gain (ADG), age (AGE) and lean meat percentage (LMP), respectively. The estimated genetic correlation coefficients were negligible: -0.07–0.01 (ADG-LMP), -0.01–0.04 (AGE-LMP). The Pi × Ha and Pi × Du crosses showed 6.76% and 4.96%; 6.74% and 4,17% and 0.08% and 0.44% heterosis for ADG, AGE and LMP, respectively. Among the environmental factors the herd effects were substantial: 41.17%, 53.67% and 14.16% for AGD, AGE and LMP, respectively. The smallest environmental influences were found for LMP.

A preliminary evaluation of growth and carcass traits in Alpine and Boer goat crosses

1998 ◽  
Vol 78 (2) ◽  
pp. 229-232 ◽  
Author(s):  
L. A. Goonewardene ◽  
P. A. Day ◽  
N. Patrick ◽  
H. D. Scheer ◽  
D. Patrick ◽  
...  
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Preliminary Evaluation ◽  
Muscle Area ◽  
Boer Goat ◽  
Dressing Percentage ◽  
Daily Gain

Birth weights of Boer (BO) sired kids were 9% higher than Alpine (AL) sired kids. Weaning, 160 d weight and preweaning average daily gain (ADG) were similar for the AL × AL, AL × SA and BO × AL. Breed of dam was significant (P < 0.02) for birth, weaning, 100-d weight, and preweaning ADG. Similar dressing percentage (DP) and ribeye muscle area (REA) were observed among AL × AL, AL × SP, and BO × SP crosses. Key words: Crossbreeding, Boer, Alpine, growth, carcass, ultrasound

HERITABILITIES AND GENETIC CORRELATIONS FOR ULTRASONIC BACKFAT MEASUREMENTS, GROWTH AND CARCASS TRAITS IN SWINE

1982 ◽  
Vol 62 (3) ◽  
pp. 665-670 ◽  
Author(s):  
D. C. JEFFRIES ◽  
R. G. PETERSON
Keyword(s):  
Key Words ◽  
Genetic Correlation ◽  
Genetic Parameters ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Phenotypic Correlation ◽  
Ultrasonic Measurements ◽  
Yorkshire Pigs ◽  
Daily Gain ◽  
Season Interaction

Genetic parameters were estimated for 2403 purebred Yorkshire pigs over a 2-yr period, representing 21 sires. The traits studied included average daily gain, age adjusted to 90 kg, ultrasonic measurements of backfat at the mid-back and loin positions, total and adjusted total ultrasonic backfat and corresponding carcass backfat measurements. Least squares analyses were used to estimate and adjust for the effects of sex, year-season and sex by year-season interaction. Heritabilities and genetic correlations were calculated for all traits using both half- and full-sib estimates. Adjusted age and adjusted total ultrasonic backfat measurements were found to have the highest heritabilities of the live traits in this study. Estimates of heritability for adjusted age and adjusted total ultrasonic backfat were 0.24 ± 0.10 and 0.26 ± 0.10 based on half-sib and 0.56 ± 0.07 and 0.41 ± 0.06 from full-sib analyses. The genetic correlation between these two traits was −0.07 ± 0.28 based on the half-sib method. The total phenotypic correlation was −0.01 ± 0.02. Key words: Swine, ultrasonic backfat, heritabilities, genetic correlations

Evaluation of the bloodless castration procedure for feedlot bulls

1993 ◽  
Vol 73 (4) ◽  
pp. 967-970 ◽  
Author(s):  
D. R. ZoBell ◽  
L. A. Goonewardene ◽  
K. Ziegler
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Daily Gain

Studies were undertaken to evaluate bloodless castration (B) based on growth and carcass traits. During the first 28 d, bloodless and surgical (S) castrates showed a 51–53% and 68–73% reduction in average daily gain, respectively, compared with intact bulls (I) (P < 0.05) in two trials. Bulls grew faster than steers overall. Carcass traits and grade were similar for B, S and I (P > 0.05). Key words: Bloodless, surgical, castration, growth, carcass traits

scholarly journals Use of robust multivariate linear mixed models for estimation of genetic parameters for carcass traits in beef cattle

2014 ◽  
Vol 131 (6) ◽  
pp. 504-512 ◽  
Author(s):  
S.O. Peters ◽  
K. Kizilkaya ◽  
D.J. Garrick ◽  
R.L. Fernando ◽  
E.J. Pollak ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Mixed Models ◽  
Genetic Parameters ◽  
Linear Mixed Models ◽  
Carcass Traits ◽  
Estimation Of Genetic Parameters
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