Application of Principal Components Factor Analysis in Quantifying Slaughter Weight and Carcass Characteristics of F1 Crosses between Marshal Parents Stock Broilers and Nigerian Normal Feathered Local Chickens

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Research Paper 01/03/2021
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Application of Principal Components Factor Analysis in Quantifying Slaughter Weight and Carcass Characteristics of F1 Crosses between Marshal Parents Stock Broilers and Nigerian Normal Feathered Local Chickens

Akporhuarho Okpako Philip, I. Udeh
Int. J. Biosci.18( 3), 127-134, March 2021.
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Slaughter weight and seven carcass characteristics namely dressed weight, eviscerated weight, wing weight, thigh weight, breast weight, back weight and neck weight of unsexed 200 f1 crossbred chicks were measured. The study aimed at describing objectively the interdependence among carcass characteristics and to predict slaughter weight from their independent factor scores using principal components analysis. Correlations between slaughter weight and carcass characteristics were positive and highly significant except neck weight. From the factor analysis with varimax rotation of the intercorrelated characteristics, two principal components were generated from the reciprocal crossbred chicks and only one principal component from the main crossbred which accounted for 93.96 and 91.64 percent of the total variance respectively. The first principal component reciprocal (Lc × Ex) crossbred PC1, termed general form, had its loadings for thigh weight, dress weight, back weight, wing weight and breast weight, and explained 74.08 percent of the variance. Neck weight primarily determined the second principal component, PC2, which contributed to 19.88% of the generalized variance. The first only principal component for main (Ex × Lc) crossbred chicks, PC1, had its loading for breast weight, dress weight, wing weight, thigh weight and neck weight and explained 91.64 percent of the total variance. Orthogonal carcass characteristics derived from the factor analysis accounted for 97.9 percent, 95.20 percent for main (Ex × Lc) crossbred and reciprocal (Lc × Ex) crossbred chicks respectively, of the variation in slaughter weight of f1 crossbred chickens. The principal component-based prediction model is preferable to original data set-based models for selecting animals for optimal balance.


Akanno EC, Ibe SN. 2005. Estimates of genetic parameters for growth traits of domestic rabbits in the humid tropics. Livestock Research for Rural Development.

Alkan S, Karaby K, Gahi A, Karshi T, Balcioglu MS. 2010. Determination of body weight and some carcass traits in Japanese quails of different lines Kafkas Uni. Vet. Fak. Derg 16(2), 277-280.

Bochno R, Rymkiewicz J, Janiszewska. 1999A. Multiple regression equations for the estimation of the content of breast muscle in white Italian geese. Pages 83-89 in Proc. 12th European Symp. Waterfall, Adana, Turkey. 17.

Dahhouda M, Toleba SS, Youssao AKI, Maamaali AA, Danguo SK, Ahounou SG, Hambukers A, Hornick JL. 2009. Effect of raw and processed mucuna pruriens seed based diet on the growth parameter and meat characteristics of Benin local guinea fowl. International Journal of poultry science 8(9), 882-889.

Egena SSA, Akpa GN, Aremu A, Alemede IC. 2014. Sources of shared variability in body weight and linear body measurement traits of two breeds of rabbit. International journal of plant, animal and environmental science 4(2), 141-145.

Everitt BS, Landau S, Leese M. 2001. Cluster Analysis. 4thedition. London, Arnold Publisher.

Ibe SN. 1989. Measure of size and conformation in commercial broilers. Journal Animal Breeding and Genetics. 9(4), 106-111.

Isaac LJ, Udoh UH, Usoro OO, Ekanem E, Williams ME. 2011. Relationship between body weight and linear body measurements in different breeds of rabbits. In: Proc. 36th Annual Conference Nigerian Society of Animal Production 13th – 16th March, 2011. University of Abuja, Abuja, Nigeria, p 10-12.

Karacaoren B, Kadarmideen HN. 2008. Principal component and clustering analysis of functional traits in Swiss dairy cattle. Turkish Journal Veterinary and Animal Science 65, 759-764.

Ogah DM. 2012. In vivo prediction of live body weight and carcass traits using body measurements indigenous guinea fowl. Biotechnology in animal husbandry 28(1), 137-146.

Olutogun O, Abdullah AR, Raji AO, Adetoro PA, Adeyemi A. 2003. Body conformation characteristics of White Fulani and Gudali (Zebu) cattle breeds of Nigeria. In: Proc. 28th Annual Conference of Nigerian Society of Animal Production 16th – 20th March, 2003. Ibadan, Nigeria, p 129-132.

Ozoje MO, Mgbere OO. 2002. Coat pigmentation effects in West African Dwarf goats: Live weights and body dimensions. Nigerian Journal of Animal Production 29, 5-10.

Pinto LFB, Packer IU, De Melo CMR, Ledur MC, Coutinho LL. 2006. Principal components analysis applied to performance and carcass traits in the chicken. Animal Resource 55, 419-25.

Raji AO, Aliyu J, Igwebuike JU. 2009. In vivo estimation of carcass components from live body measurements of the Japanese quail (Cortunix Cortunix Japonica). ARPN Journal of Agricultural and Biological Science 4, 142-148.

Salako AE. 2006. Principal component factor analysis of the morphostructure of immature Uda sheep. International Journal of Morphology 24(4), 571-574.

Shahin KA, Hassan NS. 2000. Sources of shared variability among body shape characters at marketing age in New Zealand white and Egyptian rabbit breeds. Animal Zootechnology 69, 435-45.

Shahin KA, Soliman AM, Moukhtar AE. 1993. Sources of shared variability for the Egyptian buffalo body shape (conformation). Livestock Production Science 36(4), 323-328.

Teguia A, Ngandjou HM, Defang H, Tchoumboue J. 2008. Study of the live body weight and body characteristics of the African Muscovy duck (Caraina moschata). Tropical Animal Health Production 40(1), 5-10.

Yakubu A, Salako AE, Ladokun AO, Adua MM, Bature TUK. 2007 Effects of feed restriction on performance, carcass yield, relative organ weights and some linear body measurements of weaner rabbits. Pakistan Journal Nutrition 6(4), 391-396.

Yakubu A, Ayoade JA. 2009. Application of principal component factor analysis in quantifying size and morphological indices of domestic rabbits.   International Journal of morphology 27(4), p 1013-1017.

Wu Z, Ma X, Tian S, Li C, Guan L, Li W, Wangi H. 2008. Path analysis on weight, body dimension and ear type of saibe rabbits. Proceedings of the 9th World Rabbit congress, Verona, Italy, p 261-264.