Body Weight is an Important Trait for Comparisons of Goat Breeds

محورهای موضوعی : Camel

پی.م. پارس کاسانوا ¹

1 - Department of Animal Production, University of Lleida, Av. Alcalde Rovira Roure, 191 25700 Lleida, Catalunya, Spain

تاریخ دریافت : 1393/02/06 تاریخ پذیرش : 1393/03/25 تاریخ انتشار : 1394/03/11

کلید واژه: body trait, dendrogram, morphological trait, zoometry,

چکیده مقاله :

Eleven goat breeds of different origin (10 Spanish and 1 African) were considered for this study: Zambian Dwarf, Azpi-Gorri, Blanca-Andaluza, Blanca-Celtibérica, Blanca de Rasquera, Catalana, Malagueña, Moncaína, Murciano-Granadina, Negra Serrana and Pyrenean. Nine linear body measurements for females, as well as the body weight ratio between gender and body weight, were obtained from literature and compared. Our results showed that the two principal components (PC) accounted for near 94% of total variation. The PC1 included the ratio between sexes, body weight and thoracic perimeter while the PC2 included body weight and ratio of body weight between sexes. Interestingly, all these high discriminating traits - body weight, body weight ratio between gender and thoracic perimeter- are related with body weight. The clustering of breeds according to those three traits offered a good picture of breeds according to their origin, with a cophenetic correlation, a measure of how faithfully a dendrogram preserved pairwise distances between the original unmodeled data points, high.

چکیده انگلیسی:

یازده نژاد بُز از مناطق مختلف (10 نژاد اسپانیایی و 1 نژاد آفریقایی) در این مطالعه مورد بررسی قرار گرفتند. این نژادها شامل کوتوله زامبیان، آزپی-گوری، بلانکا-آندالوزا، بلانکا-سلتیبریکا، بلانکا دِراسکوئرا، کاتالانا، مونکاینا، مورسیانو-گرانادینا، نگراسررانا و پیرنین بودند. نُه اندازه بدنی خطی برای ماده­ها و نسبت وزن بدن بین جنس­ها و وزن بدن از مقالات مختلف استخراج و مقایسه گردیدند. نتایج نشان داد که دو مؤلفه اصلی (PC) نزدیک به 94 درصد از تنوع کُل را توصیف می‌کردند. PC1 شامل نسبت بین جنس­ها، وزن بدن و دور سینه بوده و PC2 شامل وزن بدن و نسبت وزن بدن بین جنس­ها بود. همه صفات با تمایز بالا (شامل وزن بدن، نسبت وزن بدن بین جنس­ها و دور سینه) به وزن بدن مرتبط بودند. خوشه­بندی نژادها بر اساس این سه صفت تصویر خوبی از نژادها بر مبنای منشأ جغرافیایی آنها ارائه داده و همبستگی کوفنتیک (معیاری از مناسب بودن یک دندروگرام برای نشان دادن فاصله­های جفتی بین نقاط داده­های اصلی مدل نشده) بالا بوده است.

منابع و مأخذ:

Abdul-Aziz M. (2010). Present status of the world goat populations and their productivity. Lohman Info. 45, 42-52.
Aparicio G. (1974). Zootecnia Especial, Etnología Compendiada. Imp. Marín, Córdoba.
Hammer Ø., Harper D.A.T. and Ryan P.D. (2001). PAST: Paleontological Statistics Software Package for Education and Data Analysis. Availabl at: http://palaeo-electronica.org/2001_1/past/issue1_01.htm.
Ibiwoye T.I.I. and Oyatogun M.O.O. (1987). Body weight estimation from measured parameters in sheep and goats in the Kainji Lake Basin, Nigeria. Pp. 1 12^th Ann. Conf. Nigerian Soci. Anim. Prod., Ahmadu Bello University, Shika-Zaria, Nigeria.
Islam M.R., Saadullah M., Howlider A.R. and Huq M.A. (1991). Estimation of live weight and dressed carcass weight from different body measurements in goats. Indian J. Anim. Sci. 61(4), 460-461.
Johnson R.A. and Wichern D.W. (2001). Applied Multivariate Statistical Analysis. Prentice Hall, New York.
Karacaoren B. and Kadarmideen H.N. (2008). Principal component and clustering analysis of functional traits in Swiss dairy cattle. Turkey J. Vet. Anim. Sci. 32, 163-171.
Macciotta N.P.P. and Gaspa G. (2009). Use of principal component and factor analysis to reduce the number of independent variables in the prediction of genomic breeding values. Italian J. Anim. Sci. 8, 105-107.
Mason I.L. (1951). The Classification of west African Livestock: Cattle. CAB (Commonwealth Agricultural Bureaux), Farnham Royal, Bucks, UK.
Moruppa S.M. and Ngere L.O. (1986). Biometric studies on the Bornu White and Red Sokoto (Moradi) goat breeds. Pp. 287-288 in 11^th Ann. Conf. Nigerian Soci. Anim. Prod., Ahmadu Bello Univ., Nigerian Soci.Anim. Produ., Ahmadu Bello Univ., Shika-Zaria, Nigeria.
Ngere L.O., Adu I.F. and Mani I. (1979). Report of Small Ruminant Breeding Subcommittee. NAPRI Bulletin1. Ahmadu Bello University, Shika-Zaria, Nigeria.
Osinowo O.A., Olorunju S.A.S., Otchere E.O. and Arigi L.A. (1989). Development of a weigh-band for Yankasa sheep and red Sokoto goats. Pp. 6 in Proc. 14^th Ann. Conf. Nigerian Soci. Anim. Prod. Makurdi, Nigeria.
Okpeku M., Yakubu A., Peters S.O., Ozoje M.O., Ikeobi C.O.N., Adebambo O.A. and Imumorin I.G. (2011). Application of Multivariate Principal Component Analysis to Morphological Characterization of Indigenous Goats in Southern Nigeria. Acta Agriculturae Slovenica.
Pinto L.F.B., Dacker I.U., Demelo C.M.R., Ledur M.C. and Coutinho L.L. (2006). Principal components analysis applied to performance and carcass traits in the chicken. Anim. Res. 55, 419-425.
Robinet A.H. (1967). La chèvre Rousse de Maradi son exploitation et sa place dans l'économie et l'élevage de la République du Niger. Revue d'Elévage et de medecine veterinaire des Pays Tropicaux. Anim. Breed. Abst. 20(1), 129-186.
Singh P.N. and Mishra A.K. (2004). Prediction of body weight using conformation traits in Barbari goats. Indian J. Small Rumin. 10(2), 173.
Slippers S.C., Letty B.A. and de Villiers J.F. (2000). Prediction of the body weight of Nguni goats. South African J. Anim. Sci. 30(1), 127-128.
Yakubu A. and Ayoade J.A. (2009). Application of principal component factor analysis in quantifying size and morphological indices of domestic rabbits. Int. J. Morphol. 27, 1013-1017.
Yakubu A., Salako A.E., Imumorin I.G., Ige A.O. and Akinyemi M.O. (2010). Discriminant analysis of morphometric differentiation in the west African Dwarf and Red Sokoto goats. South African J. Anim. Sci. 40(4), 381-387.