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Effect of the brown coat-coding gene (TYRP-1) on wool and skin color of Zelaznienska and Wrzosowka sheep

100%

Niznikowski R., Swiatek M., Szymanska Z.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2016

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tom 55[2]

Effect of the brown coat-coding gene (TYRP-1) on wool and skin color of Żelaźnieńska and Wrzosówka sheep. The study was conducted on randomly chosen ewes (Żelaźnieńska sheep – 93; Wrzosówka sheep - 133) during the shearing. Color of wool and skin was examined using device Chroma Mater CR-400 (Konica Minolta Sensing Inc., 2011). Taking into account the results of genotyping in order to the brown coat-coding gene (TYRP-1), 66 Żelaźnieska ewes and 74 Wrzosówka ewes were chosen to next stage of study where effect of the brown coat-coding gene (TYRP-1) on wool and skin color was assessed within breed and between breeds. Based on the results significant and highly significant differences in all color measurements of wool and skin between tested breeds were found, which should be connected with different wool color in each breed. However, there is striking difference in color of wool and skin regarding to a* color parameter, which were exactly opposite. It probably means that proportion of red or green color in skin is different than in wool. Differences in color values of wool depending on TYRP-1 gene genotypes were observed only for Wrzosówka sheep. The measurement of L* color parameter made 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, the situation is opposite and homozygote TT had higher values compared to the others genotypes. No differences between wool and skin color of Żelaźnieńska sheep and no differences in skin color of Wrzosówka sheep were found. The results of studies on wool color, depending on genotype of the TYRP-1 gene in Wrzosówka sheep, make possibilities to conduct breeding work in order to develop standards for coat color for this breed.

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Comparison of ewe milk production and lamb growth in Zelaznienska sheep kept in a barn or under overhead shelter

100%

Kuznicka E., Rant W.

Annals of Animal Science

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2008

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tom 08

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nr 2

175-183

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Evaluation of thickness and color of wool in primiparas of Zelaznienska and Corriedale sheep

100%

Kulesza D., Mozga K., Niznikowski R., Strzelec E., Swiatek M., Slezak M.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2014

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tom 53

The study was conducted on 19 samples of wool of Żelaźnieńska Sheep and 28 samples of wool of Corriedale Sheep. The thickness of fi bre and rendement were examined. The color of wool were measured by colorimetric technique. Basis of studies found a wider range of thicknes fi bre of Corridale Sheep and narrow range of thickness fi bre of Żelaźnieńska Sheep compared with the standards. Particular importance is to eliminate from the breeding primiparas Corriedale Sheep characterized by nominal thickness of fi bers 25 μm and less. Average nominal thickness of the fi bers were consistent with the cited standards. In Żelaźnieńska Sheep breed obtained, positive and highly signifi cant correlation coeffi cients of rendement and thickness to brightness (L*) and found a signifi cant correlation coeffi cient between rendement and the share of yellow color (b*). In Corriedale Sheep found positive and signifi cant statistical correlation coeffi cient between the brightness (L*) and nominal thickness. Correlations between traits characterizing the color of wool, and in particular the measurement of brightness (L*), to features such as the nominal thickness of the fi bers, indicate different trends occurring in Żelaźnieńska Sheep and Corriedale Sheep.

4

The content of conjugated linoleic acid (CLA) isomer groups in milk of two Polish sheep breeds determined by silver ion liquid chromatography (Ag plus minus HPLC)

80%

Rozbicka-Wieczorek A., Radzik-Rant A., Rant W., Czauderna M.

Folia Biologica

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2013

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tom 61

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nr 1-2

Ograniczanie wyników

2 Annals of Warsaw University of Life Sciences - SGGW. Animal Science

1 Annals of Animal Science

1 Folia Biologica

2 Niznikowski R.

2 Rant W.

2 Swiatek M.

1 Czauderna M.

1 Kulesza D.

1 Kuznicka E.

1 Mozga K.

1 Radzik-Rant A.

1 Rozbicka-Wieczorek A.

1 Slezak M.

1 Strzelec E.

1 Szymanska Z.

1 2016

1 2014

1 2013

1 2008

Effect of the brown coat-coding gene (TYRP-1) on wool and skin color of Zelaznienska and Wrzosowka sheep

Comparison of ewe milk production and lamb growth in Zelaznienska sheep kept in a barn or under overhead shelter

Evaluation of thickness and color of wool in primiparas of Zelaznienska and Corriedale sheep

The content of conjugated linoleic acid (CLA) isomer groups in milk of two Polish sheep breeds determined by silver ion liquid chromatography (Ag plus minus HPLC)