Nauka Przyroda Technologie

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2019 volume 13 issue 1, 15-21 http://dx.doi.org/10.17306/J.NPT.00246
Roman Niżnikowski, Marcin Świątek, Żaneta Szymańska
Effect of the brown coat-coding gene (TYRP-1) on wool and skin color of sheep
Summary.

Background. After analyzing papers regarding the color measurements of sheep using colorimeter with the confrontation regarding the evaluation of the frequency of alleles and genotypes between sheep breeds, a hypothesis was drawn about the relation between the above-mentioned frequencies and the color of the wool measured objectively. In this paper color of the wool and skin of Żelaźnieńska sheep (white-colored) and Wrzosówka sheep (usually grey-colored) were assessed.

Material and methods. The study was conducted on mature ewes of Żelaźnieńska (n = 161) and Wrzosówka (n = 199) sheep maintained in Research Farm in Żelazna in 2015 and 2017. Sheep were randomly selected during the shearing. Color of wool and skin was examined using device Chroma Mater CR-400.

Results. Highly significant differences between assessed sheep breeds in all color measurements of wool and skin were found, which should be associated with different coat color in both breeds. Striking is the fact of the differences in the color of wool and skin in relation to the a* value, which are arranged exactly the opposite in both cases. This means that proportion of red or green color in skin is different as wool. Differences in color measurement values of wool depending on TYRP-1 gene genotypes were observed only for Wrzosówka sheep. The measurement of L* color parameter taken on wool was highly significantly higher in the case of CC and CT genotypes in comparison to TT genotype. However, in the measurement of a* color parameter is opposite and homozygote TT was higher values compared to the other genotypes. There were no differences between wool and skin color of Żelaźnieńska sheep and no differences in skin color of Wrzosówka sheep.

Conclusions The results of studies about the distribution color parameters in wool, depending on the TYRP-1 gene in position 215 genotype of Wrzosówka sheep, make possibilities to conduct breeding work in this field, which could be used in breeding practice to develop standards of coat color for this breed.

Key words: sheep, wool, skin, color of wool and skin
PDFFull text available in Polish in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom13/zeszyt1/art_2.pdf

http://dx.doi.org/10.17306/J.NPT.00246

For citation:

MLA Niżnikowski, Roman, et al. "Wpływ genotypu genu kodującego brązowe umaszczenie (TYRP-1) na barwę wełny i skóry u owiec." Nauka Przyr. Technol. 13.1 (2019): 15-21. http://dx.doi.org/10.17306/J.NPT.00246
APA Roman Niżnikowski, Marcin Świątek, Żaneta Szymańska (2019). Wpływ genotypu genu kodującego brązowe umaszczenie (TYRP-1) na barwę wełny i skóry u owiec. Nauka Przyr. Technol. 13 (1), 15-21 http://dx.doi.org/10.17306/J.NPT.00246
ISO 690 NIżNIKOWSKI, Roman, ŚWIąTEK, Marcin, SZYMAńSKA, Żaneta. Wpływ genotypu genu kodującego brązowe umaszczenie (TYRP-1) na barwę wełny i skóry u owiec. Nauka Przyr. Technol., 2019, 13.1: 15-21. http://dx.doi.org/10.17306/J.NPT.00246
Corresponding address:
Roman Niżnikowski
Wydział Nauk o Zwierzętach SGGW
Katedra Szczegółowej Hodowli Zwierząt
Zakład Hodowli Owiec i Kóz
ul. Ciszewskiego 8
02-786 Warszawa
Poland
e-mail: roman_niznikowski@sggw.pl
Accepted for print: 30.11.-0001