Inheritance of White Colour in Alpacas - Australian Alpaca Association

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not surround the neck. Piebald markings occur on the body as well, and are generally larger than tuxedo markings (Figure 3.14). An individual can be both tuxedo and piebald. Figure 3.13: Alpacas with tuxedo markings. The markings on the black cria do not extend all the way around the neck. Note that the tuxedo can occur on any base colour. Figure 3.14: A piebald marked alpaca. Note that the white on the neck extends all the way around the neck. 20
Appaloosa There is insufficient data to propose an inheritance model for appaloosa in alpacas. Many coloured spot phenotypes analogous to appaloosa exist in mammals. In horses appaloosa is caused by at least two genes acting together. In pigs it is caused by an allele of Mc1r. Therefore, while an appaloosalike phenotype probably exists in alpacas, there may also be other coloured spot phenotypes that are under the control of other genes, e.g. single random coloured spots that appear over time in an otherwise white animal, or unevenly distributed spots (Figure 3.16). Figure 3.16: Coloured spots of uncertain origin Blue Eyed White Evidence suggests that blue-eyed white (BEW) is not a single gene trait. Breeding records collected by Elizabeth Paul suggest that BEW is caused by a combination of grey and tuxedo (or piebald). BEW can occur on an E- (black skinned) or an ee (pink skinned) base, and any agouti alleles can be present. Many BEW have coloured spots, which are usually very small (Figure 3.16). Some BEW do not have completely blue eyes, or are born with pale eyes that darken with age. Figure 3.16: BEW with and without coloured spots. 21
Page 1: Inheritance of White Colour in Alpa
Page 4 and 5: © 2011 Rural Industries Research a
Page 6 and 7: About the Author Dr Kylie Munyard o
Page 8 and 9: Tables Table 2.1: Primers designed
Page 10 and 11: Executive Summary What the report i
Page 13 and 14: Introduction At the August 2006 AAA
Page 15 and 16: Melanosomes Melanosomes are the sit
Page 17 and 18: There is a three step process by wh
Page 19 and 20: cause variation of intensity of col
Page 21 and 22: Methodology Animals All research fo
Page 23 and 24: was added to the isolated aqueous p
Page 25 and 26: Figure 3.1: Agouti genotypes AA, Aa
Page 27 and 28: Figure 3.5: Black & Tan phenotypes
Page 29 and 30: Figure 3.8: An A b A b ee alpaca cl
Page 31: Roan (Rn) Roan is the second most c
Page 35 and 36: Physical Analysis of Colour The spe
Page 37 and 38: Figure 3.19: Comparison of total me
Page 39 and 40: Table 3.1: The colour phenotype and
Page 41 and 42: � The black is being diluted by a
Page 43 and 44: Table 3.4: Mc1r genotypes of non-bl
Page 45 and 46: Table 3.5: Mutations in the Tyrp1 g
Page 47 and 48: Differences in Gene Expression Colo
Page 49 and 50: functional RNA is very quickly degr
Page 51 and 52: Implications This research clearly
Page 53 and 54: References ABUL-HASSAN, K., WALMSLE
Page 55 and 56: KOBAYASHI, T., URABE, K., ORLOW, S.
Page 57: Inheritance of White Colour in Alpa

Inheritance of White Colour in Alpacas - Australian Alpaca Association

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