scholarly journals Estimates of Genetic Parameters for Body Weight and Carcass Composition in Pekin Ducks

2011 ◽  
Vol 10 (1) ◽  
pp. 23-28 ◽  
Author(s):  
T.S. Xu ◽  
X.L. Liu ◽  
W. Huang ◽  
S.S. Hou
Keyword(s):  
Body Weight ◽  
Genetic Parameters ◽  
Carcass Composition ◽  
Pekin Ducks

scholarly journals Growth Performance, Body Measurements, Carcass and Some Internal Organs Characteristics of Pekin Ducks

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 963 ◽  
Author(s):  
Dariusz Kokoszyński ◽  
Rafał Wasilewski ◽  
Mohamed Saleh ◽  
Dariusz Piwczyński ◽  
Henrieta Arpášová ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Liver Weight ◽  
Carcass Composition ◽  
The Body ◽  
Body Measurements ◽  
Internal Organs ◽  
Pekin Ducks ◽  
Unrestricted Access ◽  
Access To Water

Native breeds of ducks have been the subject of many studies in the past, yet the relevant knowledge is still incomplete and needs to be further expanded. The objective of this study was to provide information about differences in growth performance, dressing percentage, carcass composition and digestive morphometry among three lines of Pekin ducks from conservation flocks raised in Poland. The study used 180 sexed Pekin ducks—30 males and 30 females of line P33 (ducks of Polish origin), 30 males and 30 females of line P8 (ducks of Danish origin), and 30 males and 30 females of line P9 (ducks of French origin). Throughout the study (49 d), ducks were confined indoors in six pens. Birds were fed complete commercial diets ad libitum and had unrestricted access to water. The compared lines of ducks differed significantly in body weight from 1 to 49 d of age except of ducks of both sexes at 14 d. At 49 d of age, significant differences were observed between the tested ducks in all the body measurements. Duck genotype had a significant effect on preslaughter body weight, carcass weight and breast muscle, neck and remainders contents, caeca length, liver weight and gizzard percentage. The results show that the tested ducks were significantly different and unique, mainly in terms of the body biometric characteristics.

scholarly journals Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep

2007 ◽  
Vol 23 (5-6-1) ◽  
pp. 357-363
Author(s):  
M.A. Talebi ◽  
S.R. Miraei-Ashtiani ◽  
A. Nejati-Javaremi ◽  
M. Moradi-Shahrbabak
Keyword(s):  
Body Weight ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Genetic Progress ◽  
Genetic Characteristics ◽  
Derivative Free ◽  
Maternal Heritability ◽  
Lean Weight

In this study, direct and maternal heritabilities were estimated for growth traits and carcass characteristics in Lori-Bakhtiari sheep. Data for birth weight (BW; n=5826), weaning weight (WW; n=5408), body weight at six months of age (6MW; n=4237), body weight at slaughter (SW; n=396), cold carcass weight (CCW; n=291), lean weight (LW; n=204), bone weight (WB; n=291), fat weight (WF; n=204) and fat-tail weight (FTW; n=396) were used to estimate the heritabilities. The data for first three traits had been collected during seventeen years, 1990 to 2006, while for other traits had been collected during six years, 2000 to 2006. Genetic parameters including both direct and maternal genetic effects were estimated using multivariate animal models, and a Derivative Free Restricted Maximum Likelihood (DFREML) approach. The direct heritability for BW, WW, 6MW, SW, CCW, LW, WB, WF and FTW were 0.30 ? 0.03, 0.13 ? 0.03, 0.20 ? 0.03, 0.24 ? 0.06, 0.16 ? 0.06, 0.16 ? 0.06, 0.20 ? 0.11, 0.23 ? 0.11, and 0.27 ? 0.11, respectively. Maternal heritability estimates were 0.22, 0.17, 0.06, 0.10, 0.09, 0.15, 0.26, 0.06 and 0.07 for BW, WW, 6MW, SW, CCW, LW, WB, WF and FTW, respectively. Consequently, genetic progress is possible for growth traits and carcass composition by selection.

scholarly journals 305 Genetic parameters of meat quality and carcass composition traits in crossbred swine.

2018 ◽  
Vol 96 (suppl_3) ◽  
pp. 116-116
Author(s):  
P Khanal ◽  
C Maltecca ◽  
C Schwab ◽  
K Gray ◽  
F Tiezzi
Keyword(s):  
Meat Quality ◽  
Genetic Parameters ◽  
Carcass Composition

CARCASS COMPOSITION OF YORKSHIRE BARROWS AND GILTS SLAUGHTERED BETWEEN 85 and 112 KG BODY WEIGHT

1982 ◽  
Vol 62 (1) ◽  
pp. 69-76 ◽  
Author(s):  
ANDRÉ FORTIN
Keyword(s):  
Body Weight ◽  
Carcass Composition ◽  
Chemical Compositions ◽  
Ether Extract ◽  
Protein Percentage ◽  
Slaughter Weight ◽  
Yorkshire Pigs ◽  
Intermuscular Fat ◽  
The Right ◽  
Physical And Chemical

Thirty-two Yorkshire pigs, 16 barrows and 16 gilts, were slaughtered at four weights (85, 92, 103 and 112 kg) to determine the effect of body weight at slaughter on the physical and chemical composition of the carcass. The right side was dissected into meat (including intra- and intermuscular fat), separable fat and bone which were subsequently analyzed for moisture, protein (N × 6.25), ether extract and ash. Sex did not influence (P < 0.05) carcass composition at any of the four slaughter weights. Increasing slaughter weight did not markedly alter the meat percentage of the carcass side but decreased the percentage of bone (P < 0.01). A trend toward an increasing percentage of separable fat was confirmed by the use of the allometric function Y = aXb. The effect of slaughter weight was more pronounced on the chemical than on the physical composition of the carcass side especially with respect to protein percentage. The chemical compositions of the meat, separable fat and bone were also determined. The protein percentage of each of the three physically separable components of the carcass side decreased (P < 0.01) with increasing slaughter weight. The partitioning of the chemically determined components among meat, separable fat and bone was not influenced by sex or by slaughter weight. Key words: Carcass composition, swine, sex, slaughter weight

scholarly journals Genetic parameters for carcass traits and body weight using a Bayesian approach in the Canchim cattle

2016 ◽  
Vol 15 (2) ◽  
Author(s):  
S.L.C. Meirelles ◽  
F.B. Mokry ◽  
A.C. Espasandín ◽  
M.A.D. Dias ◽  
M.M. Baena ◽  
...  
Keyword(s):  
Body Weight ◽  
Bayesian Approach ◽  
Genetic Parameters ◽  
Carcass Traits

scholarly journals Correlation and path coefficient analysis of body weight and morphometric traits of two exotic genetic groups of ducks in Nigeria

2015 ◽  
Vol 44 (1) ◽  
pp. 1-9 ◽  
Author(s):  
A Yakubu ◽  
MM Muhammed ◽  
MM Ari ◽  
IS Musa-Azara ◽  
JN Omeje
Keyword(s):  
Body Weight ◽  
Path Analysis ◽  
The Body ◽  
Path Coefficient ◽  
Body Parts ◽  
Leg Length ◽  
Morphometric Traits ◽  
Thigh Circumference ◽  
Pekin Ducks ◽  
Plateau State

The study aimed at describing objectively the interdependence between body weight (BWT) and morphometric traits in Khaki Campbell and Pekin ducks using multivariate path analysis technique. Measurements were taken on one hundred and ninety seven (197) randomly selected 10-week old Khaki Campbell and Pekin ducks, respectively in Plateau State, Nigeria. The birds were reared on deep litter in a semi-intensive system where they were kept in a fenced area provided with water ponds and locked up in the poultry house during the night. The body parts measured were, body length (BDL); thigh length (THL); thigh circumference (THC); breast circumference (BTC); bill length (BLL); neck length (NKL); neck circumference (NKC); shank length (SHL); shank width (SHW); total leg length (TLL) and wing length (WL). General linear model was used to study genotype and sex effects. Pekin ducks had a superior advantage (p<0.05) over their Khaki Campbell counterparts in all the body parameters estimated. Sexual dimorphism (p<0.05) was in favour of male ducks.  Pairwise phenotypic correlations between BWT and morphometric traits were positive and significant (p<0.01), ranging from 0.38-0.95 and 0.35-0.92 for Khaki Campbell and Pekin ducks, respectively. Path analysis revealed that BDL was the variable of utmost importance directly influencing BWT in male Khaki Campbell and Pekin ducks (path coefficient=0.535 and 0.508, respectively; p<0.01) while BTC and SHL were the most responsible parameters affecting BWT in female Khaki Campbell and Pekin ducks [path coefficient=0.594 (P<0.01) and 1.197 (p<0.05), respectively]. The optimum regression models for the prediction of BWT in Khaki Campbell ducks included BDL, SHL, BTC and NKC (male)  and BDL, WNL and BTC (female); while in their Pekin counterparts, BDL, BLL and BTC (male) and BDL and SHL (female) were incorporated.DOI: http://dx.doi.org/10.3329/bjas.v44i1.23112            Bang. J. Anim. Sci. 2014. 44 (1): 1-9

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