Many years ago a woman named Ethel Mckeown of Nemora Cavies breed two smooth coat guinea pigs together, the resulting pups were all born with a fur fault. Ethel liked the look of this fur fault and decided to do selective breeding to develop this fault.
She started showing these under the section of Rare Varieties and showed in the Nationals for the cavies at the 17th National Show three of which placed, this was in 1997, the standards followed this and by the 20th show in the year 2000 they were being included in the Roughcoat Section. They can be found in both the standard coat and the satin coat .
Bonnet Bred by Wodaz Cavy
MAIN SHOW STANDARDS POINTS
Rosettes: Sitting well back (one to three) preferably one 10
Side Ruffles: Balanced, leaving good width over shoulder 25
Body:Top: Smooth reverse growth of hair to front 15
Bonnet: Extending forward between the ears 20
Belly: Uneven ruffle 10
Ears: Large extending sideways and slightly drooping, giving the effect of an extension to the bonnet 10
Type and Condition: 10
Faults: Quiff of hair between rosettes, ruffles too low on side or too close on shoulder or unbalanced. Suggestion of ridge on center back, Bonnet standing upright, to give a surprised look or finishing behind the ears.
Remarks: Whilst not mandatory best effect is often given by a single hip rosette. Either way, look for balance.
Mystical Haven Aelus
A bit about genetics ( reference Catherine Whiteway)
The American Crested cavy owes it's distinctive forehead rosette to a single dominant gene, named Star (St) . This has no connection with the genes producing Abyssinians. The American Crested owes it's white in it's rosette to the "spotting" gene s, a partial recessive to S non spotted. Spotting refers to white marks of any shape or size. The markings are apparent at birth and remain unchanged throughout life. Ss pigs may have a white blaze, foot or head spot. Pigs with ss have varying degrees of white in the coat. Ss spotting tends towards the Dutch pattern ( many T&W pigs have a Dutch pattern even with three colours) Minor genes can help to fix the pattern.
Back to rosettes: the dominant gene R gives rosettes in the coat while rr cavies are smooth coated. The effect of R is enhanced by the modifying genes mm, so that RRmm cavies are fully rosetted. Rrmm cavies may lack some rosettes. Where the genotype is RrMM or RRMM the cavy nearly always has the hair on it's toes growing backwards up the foot or in small whirls. The rest of the coat usually is smooth, though occasionally there is a ridge down the back and or two rudimentary rosettes on each side of the spine ( the basics for Bonnets). R-Mm cavies nearly always have the two rosettes and a marked ridge between them ( the basics for the Plumes).
The appearance of " side whiskers" in the occasional individual in otherwise smooth stock may not be caused in anyway described, as the offending hairs grow behind the jaws and the rest of the cavy is smooth coated. Some different unnamed factor or factors may be at work.
© New Zealand Unique Cavies 2017