Research Article
Comparative Morphometry of the Skull of Hair Goat (Capra aegagrus hircus) using Different Measurement Methods: a Methodological Study
Abstract
Morphometry is the branch of science that deals with the problems that arise in terms of shape by using various methods. In this sense, different measurement methods are used. The traditional morphometry technique that has been going on for years is based on measurements with digital callipers. With technological developments, three-dimensional (3D) modelling from images obtained with imaging systems has increased, which gives morphometric results closer to reality in irregular structures. For 3D modelling, images obtained from imaging systems such as CT and MRI are modelled using different software and morphometric data are obtained. In addition to these imaging systems, 3D models can also be created from images obtained with a tool called photogrammetry. The aim of this study is to determine the craniometric data of Hair goats by using different measurement methods. For this purpose, a total of 14 Hair goat skulls, 7 female and 7 male, were used. From each skull, 38 parameters were measured with the specified measurement methods (digital calliper, modelling with photogrammetry and modelling with 3D-slicer programme). Seven index calculations and statistical analyses were performed. As a result of the analyses, a statistical difference was determined between the techniques in 16 parameters in male goats, while the difference was observed in 13 parameters in female goats. In addition, facial index 1 and orbital index values in male goats differed between the methods, while differences were observed in facial index 1, basal index and palatal index values in female goats (p<0.05). As a result of the study, it was thought that the use of images and 3D models obtained from bones scanned with different methods should be a priority in osteometric measurements, especially since the results of measurements made in a digital environment provide closer results to reality. Since the skull bones used in the study consist of irregular bones, it is thought that differences may be observed, but statistical differences between the methods should not be ignored.
References
- Slice DE. Geometric morphometrics. Annu Rev Anthropol, 36: 261-281, 2007. https://doi.org/10.1016/j.jchb.2010.01.048.
- Rohlf, FJ, Marcus LF. A revolution in morphometrics. Trends Ecol Evol, 8(4):129-132, 1993. https://doi.org/10.1016/0169-5347(93)90024-J.
- Velemínská J, Krajíček V, Dupej J, Goméz-Valdés JA, Velemínský P, Šefčáková A, Pelikán J, SánchezMejorada G, Brůžek, J. Technical Note: Geometric Morphometrics and Sexual Dimorphism of the Greater Sciatic Notch in Adults From Two Skeletal Collections: The Accuracy and Reliability of Sex Classification. Am J Phys Anthropol, 152(4): 435-571. 2013. https://doi.org/10.1002/ajpa.22373.
- İşbilir F, Güzel, BC. Morphometric analysis of the mandible of ram and ewe romanov sheep (Ovis aries) with 3D modelling: A CT study. Anat histol embryol, 52(5):742–751, 2023. https://doi.org/10.1111/ahe.12932.
- Dayan MO, Demircioglu I, Koçyigit A, Güzel BC, Karaavci FA. Morphometric analysis of the skull of Hamdani sheep via threedimensional modelling. Anat Histol Embryol, 52(2):215–222, 2022. https://doi.org/10.1111/ahe.12873.
- Güzel BC, Işbilir F. Prenatal (Second Trimester and Third Trimester) and Postnatal (Third and Fourth Week After Birth) Developmental Radiological Investigation of Sheep Skulls. Anat Histol Embryol, 53(5), e13105, 2024. https://doi.org/10.1111/ahe.13105
- Güzel B C, & Işbilir F. Sexual Dimorphism of Foetal Sheep Skulls During the Second and Third Periods of Pregnancy. Vet med sci, 11(2), e70265, 2025. https://doi.org/10.1002/vms3.70265
- Meise K, Mueller B, Zein B, Trillmich F. Applicability of single-camera photogrametry to determine body dimensions of pinnipeds: Galapagos sea lions as an example. Plos One, 9:1-7, 2014.
- Chang YC. Photogrammetric system for 3D reconstruction of a scoliotic torso. Thesis of master program of biomedical engineering, university of Calgary, Alberta, 2008.
- Ege A, Şeker DZ, Tuncay İ, Duran Z. Radius distal eklem yüzünün digital fotogrametrik yöntemle ölçme değerlendirmesi. VIII. Congress Book of the Turkish Society for Surgery of the hand and upper extremity, 21/10: 128- 132, Adana, 2002.
- Morgan B, Ford ALJ, Smith MJ. Standard methods for creating digital skeletal models using structure-from-motion photogrammetry. Am J Phys Anthropol, 169(1):152–160, 2019. https://doi.org/10.1002/ajpa.23803.
- Schaller O, Constantinescu GM. Illustrated veterinary anatomical nomenclature. Georg Thieme Verlag, 2007. König HE, Liebich HG. Veterinary anatomy of domestic animals. Textbook and color atlas, Thieme Verlag, 2020.
- Güzel BC, Işbilir F. Radiological examination of the skull of Siirt-coloured mohair goat, Romanov and Hamdani sheep. Anat histol embryol, 52(6), 967–974, 2023. https://doi.org/10.1111/ahe.12956
- Demircioğlu I, Koçyiğit A, Demiraslan Y, Yilmaz B, Gezer IN, Aydoğdu, S, Dayan MO. Digit Bones (Acropodium) of Gazella (Gazella subgutturosa); Three-Dimensional Modelling and Morphometry. Pak Vet J, 41:481–486, 2021. doi.org/10.29261/pakvetj/2021.067.
- Hadžiomerović N, Gündemir O, Kovačević S. Mandible size and shape of the red fox (Vulpes vulpes) and golden jackal (Canis aureus). Adv Anim Vet Sci, 10(2): 364– 368, 2022.
- Szara T, Duro S, Gundemir O, Demircioglu I. Sex determination in Japanese quails (Coturnix japonica) using geometric morphometrics of the skull. Animals, 12(3): 302. 2022.
- Özkadif S, Eken E. Craniometric measurements of New Zealand rabbits skull from three-dimensional reconstruction images. ARC J Anim Vet Sci, 2: 9–14, 2016.
- Tecirlioglu S. Makro-Anatomische Untersuchungen über die Skelettkonchen von Hunden und der Hyane. Ankara Univ Vet Fak Derg, 30(1): 149–166, 1983.
- Teo EC, Timothy H, Haiblikova S. 3D morphometric analysis of human vertebrae C3-T3 using CT images reconstruction. J Spine, 6:1-5, 2017. https://doi.org/10.4172/2165-7939.1000391.
- Adebisi S. Forensic anthropology in perspective: The current trend. J Forensic Sci, 4(1):1–6, 2009.
- Kobryńczuk F, Krasińska M, Szara T. Sexual dimorphism in skulls of the lowland European Bison, Bison Bonasus Bonasus, Ann Zool Fenn, 45: 335–340. 2013.
- Onar V, Pazvant G, Pasicka E, Armutak A, Alpak H. Byzantine Horse Skeletons of Theodosius Harbour: 2. Withers height estimation. Rev med vet, 166: 30-42, 2015.
- Hrist K. The domestication of goats. Science, Tech, Math. http://archaeology.about.com/od/domestications/qt/goats.htm, (accessed 24.11.2021.). 2019
- Dellal G. Antalya ilinde kıl keçisi yetiştiriciliğinin bazı yapısal özellikleri, II. Bazı üreme özellikleri, sağım ve kırkım dönemi uygulamaları. Tarım Bilim Derg, 6(4): 124-129, 2000.
- Von den Driesch A. Guide to the measurement of the animal bones from archaeological sites. Peabody Museum Bulletin 1. Harvard University, 1976.
- Güzel BC, İşbilir F. Morphometric analysis of the skulls of a ram and ewe Romanov sheep (Ovis aries) with 3D modelling. Vet med sci, 10(2):e1396, 2024. https://doi.org/10.1002/vms3.1396.
- Gündemir O, Duro S, Jashari T, Kahvecioglu O, Demircioglu I, Mehmeti H. A study on morphology and morphometric parameters on skull of the Bardhoka autochthonous sheep breed in Kosovo. Anat Histol Embryol 49(3): 365–371, 2020.
- Demircioglu I, Gezer Ince N. Three-dimensional modelling of computed tomography images of limb bones in gazelles (Gazella subgutturosa). Anat histol embryol, 49(6): 695–707, 2020. https://doi.org/10.1111/ahe.12564.
- Krupa P, Krsek P, Cernochova P, Molitor M. 3D real modelling and CT biomodels application in facial surgery. In: Neuroradiology, Springer, Berlin, 2004.
- Morone PJ, Shah KJ, Hendricks BK, Cohen-Gadol AA. Virtual, 3-Dimensional Temporal Bone Model and Its Educational Value for Neurosurgical Trainees. World neurosurg, 122: e1412–e1415, 2019. https://doi.org/10.1016/j.wneu.2018.11.074.
- Sergovich A, Johnson M, Wilson TD. Explorable three-dimensional digital model of the female pelvis, pelvic contents, and perineum for anatomical education. Anat sci educ, 3(3): 127–133, 2010. https://doi.org/10.1002/ase.135.
- Sarıtaş M. Adli Tıp Uygulamalarında 3D (Üç Boyutlu) TeknolojininKullanımı. Denizli; Pamukkale Üniversitesi Tıp Fakültesi Adli TıpAnabilim Dalı, Uzmanlık Tezi, 2015.
- Südor S. Dijital sanatlarda 3d model oluşturma tekniklerinin kullanimi. İdil Sanat ve Dil Derg, 10(88): 1757-1779, 2021.
- Uslu A, Uysal M. Arkeolojik eserlerin fotogrametri yöntemi İle 3 boyutlu modellenmesi: Demeter Heykeli örneği. Geomatik, 2(2):60–65, 2017.
- Jamali AA, Deuel C, Perreira A, Salgado CJ, Hunter JC, Strong EB. Linear and angular measurements of computer-generated models: are they accurate, valid, and reliable? Computer aided surgery: official journal of the International Society for Computer Aided Surg, 12(5): 278–285, 2007.
- Kim G, Jung HJ, Lee HJ, Lee JS, Koo S, Chang SH. Accuracy and reliability of length measurements on three-dimensional computed tomography using open-source OsiriX software. J digit imaging, 25(4): 486–491, 2012. https://doi.org/10.1007/s10278-012-9458-6.
- Güzel BC, Koçyiğit A, Demircioğlu İ, Demiraslan Y. Investigating metacarpi of Hamdani sheep via different measurement and modelling methods: A methodological study. Anat histol embryol, 51(4): 484–491. 2022. https://doi.org/10.1111/ahe.12816.
- Courtenay LA, Maté-González MÁ, Aramendi J, Yravedra J, González-Aguilera D, Domínguez-Rodrigo M. Testing accuracy in 2D and 3D geometric morphometric methods for cut mark identification and classification. Peer J, 6:e5133. 2018. https://doi.org/10.7717/peerj.5133.
- Martin CM, Roach VA, Nguyen N, Rice CL, Wilson TD. Comparison of 3D reconstructive technologies used for morphometric research and the translation of knowledge using a decision matrix. Anat sci educ, 6(6): 393–403, 2013. https://doi.org/10.1002/ase.1367.
- Goodarzi N, Shah Hoseini T. Morphologic and osteometric analysis of the skull of markhoz goat (Iranian angora). Vet med int, 972682, 2014. https://doi.org/10.1155/2014/972682.
- Yılmaz B, Demircioğlu İ, Bozkaya F, Gezer İnce N. Three-dimensional tomographic reconstruction and morphometric analysis of skull in gazelles (Gazella subgutturosa). Ankara Üniv Vet Fak Derg, 67(2): 161-168, 2020.
- İşbilir F, Güzel BC, Gülaydin A, Choudhary OP. Osteometric and topographic measurement of the skull and mandible of Siirt-colored Mohair goat with three-dimensional (3D) modelling technique. Folia morphol, 10.5603/fm.97504. 2023. https://doi.org/10.5603/fm.97504.
- Koçyiğit A, Demircioğlu İ. Comparison of craniometric measurements of New Zealand rabbit (Oryctolagus cuniculus L.) using three-dimensional scanner with digital calliper measurements: A methodological study. Anat histol embryol, 53(2): e130232024. https://doi.org/10.1111/ahe.13023.
- Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. The Lancet, 327(8476): 307–310, 1986.
- Bland JM, Altman DG. (). Agreement between methods of measurement with multiple observations per individual. J Biopharm Stat, 17(4): 571–582, 2007.
- Arıhan SK. Antropolojik çalişmalarda mandibula materyalinin3d optik tarama yöntemi ile iki boyutlu fotoğraflama tekniği ile karşilaştirilmasi. Ankara Üniv Diş Hekimliği Fak Derg, 47(1–3): 51–62, 2020.
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Details
| Primary Language | English |
|---|---|
| Subjects | Veterinary Sciences (Other) |
| Journal Section | Research Articles |
| Authors | |
| Publication Date | July 29, 2025 |
| Submission Date | February 7, 2025 |
| Acceptance Date | June 30, 2025 |
| Published in Issue | Year 2025 Volume: 44 Issue: 1 |
