Establishment of optimum regression models and determination of relationships between body measurements and slaughter traits in Japanese quails by path analysis
Fatih Uckardes A D , Dogan Narinc B and Hande Kucukonder CA Department of Biostatistics and Medical Informatics, Faculty of Medicine, Adiyaman University, 02200 Adiyaman, Turkey.
B Department of Biometry and Genetics, Faculty of Veterinary Medicine, Namik Kemal University, 59100 Tekirdag, Turkey.
C Faculty of Economics and Administrative Sciences, Bartin University, 74100 Bartin, Turkey.
D Corresponding author. Email: fatihuckardes@gmail.com
Animal Production Science 55(6) 799-803 https://doi.org/10.1071/AN13357
Submitted: 29 August 2013 Accepted: 9 April 2014 Published: 13 June 2014
Abstract
Path analysis was used to investigate direct, indirect and total effects of some morphological measurements on slaughter and carcass traits in Japanese quails. Bodyweight, shank length, shank diameter, breast circumference and body length measurements were taken from 219 Japanese quails. Bivariate correlations between carcass weight and morphological traits in quails ranged from 0.405 to 0.864. The direct effect of bodyweight on carcass weight was the strongest in the study and (path coefficient of 0.85) positively influenced carcass weight (P < 0.01). The direct effect of other linear-type traits on carcass weight was non-significant as revealed by t-test (P > 0.05). These traits were indirectly realised mostly by shank diameter. Thus, they were dropped from the final regression equations to obtain much more simplified prediction models. The optimum multiple regression equation for Japanese quails included bodyweight, with coefficient of determination (R2) of 0.7463. The correlation between characters was determined in more detail by using path analysis in this study. Thus, it was shown that path analysis could be used for selecting a variable. The forecast indices obtained in this study could aid in weight estimation, selection and breeding programs.
Additional keywords: carcass meat, collinearity, path coefficient, prediction model, variance inflation factor.
References
Aboul S (2008) Divergent selection for growth and egg production traits in Japanese quails. PhD Thesis. University of Al-Azhar, Cairo, Egypt.Adeogun IO, Adeoye AA (2004) Heritabilities and phenotype correlations of growth performance traits in Japanese quails. Livestock Research for Rural Development 16, 1–5.
Aggrey SE, Ankra-Badu GA, Marks HL (2003) Effect of long-term selection on growth characteristics in Japanese quails. Poultry Science 82, 538–542.
| Effect of long-term selection on growth characteristics in Japanese quails.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD3s7ptFSqtQ%3D%3D&md5=39cb1cfb388205b1bccc53874f508effCAS | 12710471PubMed |
Aksit M, Oguz I, Akbas Y, Altan O, Ozdogan M (2003) Genetic variation of feed traits and relationships in some meat production traits in Japanese quails (Coturnix coturnix japonica). Archiv fur Geflugelkunde 67, 76–82.
Cankaya S, Abaci HS (2012) Path analysis for determination of relationships between some body measurements and live weight of German fawn × hair crossbred kids. Kafkas Üniversitesi Veteriner Fakültesi Dergisi 18, 769–773.
Caron N, Minvielle F, Desmarais M, Poste LM (1990) Mass selection for 45-day body weight in japanese quails: selection response, carcass composition, cooking properties, and sensory characteristics. Poultry Science 69, 1037–1045.
| Mass selection for 45-day body weight in japanese quails: selection response, carcass composition, cooking properties, and sensory characteristics.Crossref | GoogleScholarGoogle Scholar |
Cruz CD (2001) ‘Programa GENES – versão Windows. Aplicativo computacional em genética e estatística.’ (UFV: Vicosa, MG, Brazil)
Darden JR, Marks HL (1988) Divergent selection for growth in Japanese quails under split and complete and correlated responses to selection. Poultry Science 67, 519–529.
| Divergent selection for growth in Japanese quails under split and complete and correlated responses to selection.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DyaL1czgtlKgtw%3D%3D&md5=217ec8325fbcaf63aad4e5e5fdbf233dCAS | 3405929PubMed |
Gihan SF, El-Full EA (2012) Genetic analysis of clutch and some related production traits in Japanese quails. Egyptian Poultry Science 32, 443–456.
Gurcan EK, Cobanoglu O (2012) Relationship between hatchling weight and length on body weight performance in Japanese quails (Coturnix coturnix japonica) YYU Journal of Agriculture Science 22, 85–90.
Marks HL (1996) Long-term selection for body weight in Japanese quails under different environments. Poultry Science 75, 1198–1203.
| Long-term selection for body weight in Japanese quails under different environments.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DyaK2s%2FkvVCmug%3D%3D&md5=fa80557a2b180b8dfbf3e72af6f3cd16CAS | 8893294PubMed |
Mendes M, Karabayir A, Pala A (2005) Path analysis of the relationships between various body measures and live weight of American Bronze Turkeys under the three different lighting programs. The Journal of Agricultural Science 11, 184–188.
Minvielle F (2004) The future of Japanese quails for research and production. World’s Poultry Science Journal 60, 500–507.
| The future of Japanese quails for research and production.Crossref | GoogleScholarGoogle Scholar |
Narinc D, Aksoy T, Karaman E, Karabag K (2009) Effect of selection applied in the direction of high live weight on growth parameters in Japanese quails. Journal of Akdeniz University Faculty of Agriculture 22, 149–156.
Narinc D, Aksoy T, Karaman E (2010) Genetic parameters of growth curve parameters and weekly body weights in Japanese quails. Journal of Animal and Veterinary Advances 9, 501–507.
| Genetic parameters of growth curve parameters and weekly body weights in Japanese quails.Crossref | GoogleScholarGoogle Scholar |
Ojo V, Ayorinde KL, Fatoki HO (2011) Relationship between body weight and egg production trait in the Japanese quails (Coturnix coturnix japonica). NISEB Journal 11, 89–94.
Raji AO, Aliyu J, Igwebuike JU (2009) In vivo estimation of carcass components from live body measurements of the japanese quails (Coturnix coturnix Japonica). ARPN Journal of Agricultural and Biological Science 4, 15–22.
Rathert CT, Uckardes F, Narinc D, Aksoy T (2011) Comparision of principal component regression with the least square method in prediction of internal egg quality characteristics in japanese quails. Kafkas Üniversitesi Veteriner Fakültesi Dergisi 17, 687–692.
Saatci M, Kirmizibayrak T, Aksoy AR, Tilki M (2005) Egg weight, shape index, hatching weight with interrelationship among these traits in different feather coloured Turkish native geese. Turkish Journal of Veterinary and Animal Sciences 29, 353–357.
Sarica S, Corduk M, Kilinc K (2005) The effect of dietary L-carnitine supplementation on growth performance, carcass traits and composition of edible meat in Japanese quails (Coturnix coturnix japonica). Journal of Applied Poultry Research 14, 709–715.
| The effect of dietary L-carnitine supplementation on growth performance, carcass traits and composition of edible meat in Japanese quails (Coturnix coturnix japonica).Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XivVWmsg%3D%3D&md5=f28785a28c05fa54c037332be4a7150aCAS |
Satterlee DG, Cadd GC, Jones RB (2000) Developmental instability in Japanese quails genetically selected for contrasting adrenocortical responsiveness. Poultry Science 79, 1710–1714.
| Developmental instability in Japanese quails genetically selected for contrasting adrenocortical responsiveness.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXitV2qsr0%3D&md5=7601ca5c0fdfd5a844ec0b685a94cc7bCAS | 11194031PubMed |
Sokal RR, Rohlf FJ (1995) ‘Biometry: the principles and practice of statistics in biological research.’ 3rd edn. (W.H. Freeman: New York)
SPSS (2002) ‘Statistical package for social sciences (SPSS 11.5 for windows).’ (SPSS: Chicago, IL)
Toelle VD, Havenstein GB, Nestor KE, Harvey WR (1991) Genetic and phenotypic relationship in Japanese quails. Poultry Science 70, 1679–1688.
| Genetic and phenotypic relationship in Japanese quails.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DyaK38%2FitVGlug%3D%3D&md5=1d946b2be2b24da95281da1a61f68b8eCAS | 1924086PubMed |
Topal M, Esenbuga N (2001) A study of direct and indirect effects of some factors on weaning weight of Awassi lambs. Turkish Journal of Veterinary and Animal Sciences 25, 377–382.
Yakubu A, Salako AE (2009) Path coefficient analysis of body weight and morphological traits of Nigerian indigenous chickens. Egyptian Poultry Science 29, 837–850.
