Placental Characteristics Classification of Various Native Turkish Sheep Breeds
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Department of Agricultural Biotechnology, Ondokuz Mayis University, Samsun 55139, Turkey
2
Department of Animal Science, Ondokuz Mayis University, Samsun 55139, Turkey
3
Department of Agricultural Biotechnology, Kırşehir Ahi Evran University, Kırşehir 40100, Turkey
4
Department of Veterinary, Erzincan Binali Yıldırım University, Erzincan 24500, Turkey
5
Department of Animal Biotechnology and Genetics, UTP University of Science and Technology, 85-084 Bydgoszcz, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Dimitrios Loukovitis
Animals 2021, 11(4), 930; https://doi.org/10.3390/ani11040930
Received: 28 February 2021
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Revised: 19 March 2021
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Accepted: 22 March 2021
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Published: 25 March 2021
(This article belongs to the Special Issue Small Ruminant Genetics and Breeding)
Simple Summary
The aim of this study was to classify placental characteristics of Akkaraman, Morkaraman, Karayaka, Awassi, Malya, and Bafra native sheep breeds using the hierarchical clustering method. As a result, six breeds were separated into three clusters: the first cluster consisted of Bafra, Karayaka, and Awassi breeds; the second consisted of Akkaraman and Malya breeds; and the third cluster included only the Morkaraman breed.
The aim of this study was to classify placental characteristics of Akkaraman, Morkaraman, Karayaka, Awassi, Malya, and Bafra sheep breeds using the hierarchical clustering method. In total, 240 individual data records were used as experimental material. Placental characteristics such as total cotyledon surface area, small and large cotyledon length, small cotyledon depth, etc. were used as explanatory variables to classify the breeds’ characteristics. Hierarchical clustering was used with the nearest neighbour method with Euclidean distance in order to classify the sheep breeds’ variations. As a result, six breeds were separated into three clusters: the first cluster consisted of Bafra, Karayaka, and Awassi breeds; the second consisted of Akkaraman and Malya breeds; and the third cluster included only the Morkaraman breed. Bafra and Karayaka were pointed as the nearest breeds, with a similarity of 98.7% in terms of placental characteristics. The similarity rate of the Akkaraman and Malya breeds was at a level of 97.5%, whereas it was 96.8% for Bafra, Karayaka, and Awassi breeds. The similarity of Akkaraman, Karayaka, Awassi, Malya, and Bafra sheep breeds was estimated as 95.7%. The overall similarity was found to be at a level of 93.2% among sheep breeds. The outcomes of the study might be useful as a selection tool for reproductivity and can be used to select the breed to be reared.
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Keywords:
sheep breeds; placental characteristics; hierarchical clustering; nearest neighbours method; principal component analyses
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MDPI and ACS Style
Şen, U.; Önder, H.; Şirin, E.; Özyürek, S.; Piwczynski, D.; Kolenda, M.; Ocak Yetişgin, S. Placental Characteristics Classification of Various Native Turkish Sheep Breeds. Animals 2021, 11, 930. https://doi.org/10.3390/ani11040930
AMA Style
Şen U, Önder H, Şirin E, Özyürek S, Piwczynski D, Kolenda M, Ocak Yetişgin S. Placental Characteristics Classification of Various Native Turkish Sheep Breeds. Animals. 2021; 11(4):930. https://doi.org/10.3390/ani11040930
Chicago/Turabian StyleŞen, Uğur, Hasan Önder, Emre Şirin, Selçuk Özyürek, Dariusz Piwczynski, Magdalena Kolenda, and Sezen Ocak Yetişgin. 2021. "Placental Characteristics Classification of Various Native Turkish Sheep Breeds" Animals 11, no. 4: 930. https://doi.org/10.3390/ani11040930
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