YALÇIN TAHTALI, SONER ÇANKAYA, ZAFER ULUTAŞ

Canonical correlation analysis for estimation of relationships between some traits measured at birth and weaning time in karayaka lambs

Bu çalışmada, Gaziosmanpaşa üniversitesi araştırma çiftliğinde yetiştirilen, 121 adet Karayaka kuzusuna ait, doğumda ölçülen 6 farklı morfolojik özellik ile (X veri seti- doğum ağırlığı (BW), vücut uzunluğu (BL), cidago yüksekliği (HW), göğüs derinliği (CD), göğüs genişliği (CW) ve göğüs çevresi (CG)) sütten kesim döneminde ölçülmüş morfolojik özellikler (Y veri seti – sütten kesim ağırlığı (WW), vücut uzunluğu (BL_W), cidago yüksekliği (HW_W), göğüs derinliği (CD_W), göğüs genişliği (CW_W) ve göğüs çevresi (CG_W)) arasındaki ilişkiyi tahmin etmek için kanonik korelasyon analizi uygulanmıştır. Kanonik değişken çiftleri arasında tahmin edilen altı farklı kanonik korelasyon katsayılarından (CCC) (r=0.668) birincisi olarak önemli bulunmuştur (P

Anahtar Kelimeler:

koyun, Karayaka, doğum ağırlığı, sütten kesim ağırlığı, vücut uzunluğu, vücut ölçümleri, korelasyon analizleri, kuzu, morfoloji, sütten kesim

Karayaka kuzularında, sütten kesim zamanında ve doğumda ölçülmüş bazı özellikler arasındaki ilişkinin tahmini için kanonik korelasyon analizi

In this study, canonical correlation analysis was applied to estimate the relationship between six different morphologic traits (X set – birth weight (BW), body length (BL), height at withers (HW), chest depth (CD), chest width (CW) and chest girth (CG)) measured at birth and the morphological traits measured at weaning time (Y set – weaning weight (WW), body length (BL_W), height at withers (HW_W), chest depth (CD_W), chest width (CW_W) and chest girth (CG_W)) measured from 121 Karayaka lambs, raised at Gaziosmanpasa University. First of estimated six different canonical correlation coefficients (CCC) (r=0.668) between the pairs of canonical variables were found significant (P<0.05). The results of canonical correlation analysis indicated that height at withers, chest girth and birth weight had largest contribution for the explanatory capacity of canonical variables estimated from the morphologic traits of Karayaka lambs at the birth when compared with other body measurements. Height withers and chest girth had largest contribution for the explanatory capacity of canonical variables estimated from the morphological traits of the lambs at the weaning time when compared with other body measurements. As results of this study showed that height at withers, body weight and chest girth measured at birth can be used as early selection criteria for genetic improvement in Karayaka lambs.

Keywords:

sheep, Karayaka, birth weight, weaning weight, body length, body measurements, correlation analysis, lambs, morphology, weaning,

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1. Ulutas Z, Sezer M, Aksoy Y, Sirin E, Sen U, Kuran M, Akbas Y: The effect of birth types on growth curve parameters of karayaka lamb. J Anim Vet Adv, 9 (9):1384-1388, 2010.
2. Ulutas, Z, Kuran M, Sirin E, Aksoy Y: Breeding of Karayaka ewes. Annual Report. TAGEM, March 23-26, pp. 229-234, 2009.
3. Cankaya S, Kayaalp GT: Estimation of relationship between live weights and some body measurements in German farm × hair crossbred by canonical correlation analysis. J Anim Pro, 48 (2): 27-32, 2007.
4. Cankaya S, Altop A, Oflaz M, Erener G: Canonical correlation analysis for estimation of relationships between some traits measured at pre- and post-slaughtering periods in Karayaka hoggets. Anadolu Agr Sci, 24 (1): 61-66, 2009.
5. Thompson B: Canonical Correlation Analysis Uses and Interpretation. Sage Publ, USA, 1984.
6. Bilgin OC, Emsen E, Davis ME: An application of canonical correlation analysis to relationships between the head and scrotum measurements in awassi fat tailed lambs. J Anim Vet Adv, 2, 343-349, 2003.
7. Al-Kandari N, Jolliffe IT: Variable selection and interpretation in canonical correlation analysis. Commun stat-simul C26, 873-900. doi:10.1080/ 03610919708813416, 1997.
8. Fourie PJ, Neser FWC, Oliver JJ, Van Der Westhuizen C: Relationship between production performance, visual appraisal and body measurements of young dorper rams. S Afr J Anim Sci, 32, 256-262, 2002.
9. Tatar AM, Elicin A: Ile de france x akkaraman (G1) melezi erkek kuzularında süt emme ve besi dönemindeki canlı ağırlık ve vücut ölçüleri arasındaki ilişkinin kanonik korelasyon metodu ile arastırılması. Tarim Bil Der, 8, 67-72, 2002.
10. Keskin I, Dag B: Investigation of relationship amongst milk and wool yield traits of awassi sheep by using canonical correlation analysis. J Anim Vet Adv, 8 (3): 464-468, 2009.
11. Musa HH, El Amin FM, Suleiman AH, Chen O, Olowofeso DM Mekki: Body measurements of west african sheep in Sudan, J Anim Vet Adv, 5 (4): 298-300, 2006.
12. Keskin S, Kor A, Baspinar E: Akkeçi oğlaklarında kesim öncesi ve kesim sonrası ölçülen bazı özellikler arasındaki ilişki yapısının kanonik korelasyon analizi ile irdelenmesi, Tarim Bil Der, 11, 154-159, 2005.
13. Akbas Y, Takma C: Canonical correlation analysis for studying the relationship between egg production traits and body weight, egg weight and age at sexual maturity in layers. Czech J Anim Sci, 50 (4): 163-168, 2005.
14. Emsen E, Davis, ME: Canonical correlation analyses of testicular and body measurements of awassi ram lambs. J Anim Vet Adv, 3, 842-845, 2004.
15. Sahin M, Cankaya S, Ceyhan A: Canonical correlation analysis for estimation of relationship between some traits measured at weaning time and six-month age in merino lambs. Bulgarian J Anim Sci, 17 (5): 680-686, 2001.
16. Gunderson BK, Muirhead RJ: On estimating the dimensionality in canonical correlation analysis. J Multivariate Anal, 62, 121-136, 1997.
17. Johnson RA, Wichern DW: Applied Multivariate Statistical Analysis. Prentice Hill, 2002.
18. Cankaya S, Ocak N, Sungu M: Canonical correlation analysis for estimation of relationships between sexual maturity and egg production traits upon availability of nutrients in pullets. Asian Aust J Anim Sci, 21, 1576-1584, 2008.
19. Sharma S: Applied Multivariate Techniques. John Wiley & Sons, New York, 1996.
20. The SAS System for Windows: Sas Institute Inc, Release: 8.1, Cary, NC. 1999.
21. Yaprak M, Koycegiz F, Kutluca M, Emsen E, Ockerman HW: Canonical correlation analysis of body measurements, growth performance and carcass traits of red Karaman lambs. J Anim Vet Adv, 7 (2): 130-136, 2008.
22. Cankaya S, Yazgan E, Kayaalp GT, Gocmez Z, Serbester U: Canonical correlation analysis for estimation of relationship between some body measurements at the birth and 6 month periods in Holstein Friesian calves. J Anim Vet Adv, 7, 953-958, 2008.