This pattern is desirable in a lot of breeds, and AKC standard in several. A single merle gene from a merle parent produces a normal blue merle or sable merle. It's clear from this that breeding a double merle to a non merle is the only way to get a completely merle litter. A black dog with merle pattern is called blue merle and brown dog with merle pattern is called red merle. They were originally bred for herding and have a high need for keeping busy and active. Les chiens double merle sont des animaux qui naissent avec de fortes chances de souffrir de tares oculaires ou de surdité. Dogs with two copies of any of the size variants consistent with merle (alleles other than N) are called double merles and often can have an all white coat accompanied by multiple abnormalities of skeletal, cardiac, and reproductive systems, therefore breeding two merle dogs is discouraged to avoid producing double merle offspring. There is a strong possibility she is a double merle considering the limited colour and the merle markings. She is deaf in her left year. A double merle can only be bred from two merles, as it requires an M gene from each parent. The eye on the side with the white is As merle is dominant, no dogs can be carriers of it - any dog with one M gene will be a merle. Keep in mind though, that just because a dog has a white coat, doesn't necessarily mean it's a double merle, because there are other genetic combinations that can produce a white puppy. This eventually results in death. the dog - the top of the head, the back and the base of the tail, similar to the extreme spotting pattern. Double merles are often referred to as "lethal whites". Ammardan Border Collies, a breeder. This is an incorrect and misleading term. because it is unable to make eumelanin in its coat, and the merle gene only affects eumelanin (black, liver, blue and isabella). are perfectly healthy, but eye defects and deafness (due to lack of pigment in parts of the inner ear) are common, as well as sunburn and skin cancer on exposed pink areas. You may need to go back to the breeding page to understand So just treat them as a normal Border Collie. Breeding merles of any sort (single or double) together There is also a possibility that she is not and is actually a product of breeding two collies with a lot of white colouration together. Borders are known for their high energy levels and willingness to work with humans. They are highly active and hard-working, loyal, athletic, and intelligent. Blue & White Border Collie. Merle puppies are circled in blue and double merles are circled in red. The recognized breeds with merle pattern are, for example, Australian Shepherd, Border collie, Dachshund, Great Dane, Louisiana Leopard dog, Cardigan Welsh Corgi, etc. On average, that’s a quarter of the litter. The resulting offspring is referred to as a double, or homozygous merle. this if you're not sure what a Punnet square is. This shows the genetic possibilities of EACH puppy in a litter bred from two merle dogs. Draven. However, when each parent contributes a merle gene to offspring, problems arise. If such a dog is It would be unusual for a double merle to have so much pigment. It has the same incredible work ethic, intelligence, and energy as any other colored Border Collie. However, occasionally merle can be hidden by other genes. Blue Merle Border Collie At A Glance. blue because of the lack of pigment, and she has a butterfly nose. A double merle inherits the merle gene twice. The resulting offspring is referred to as a double, or homozygous merle. In a double merle, the marbling/lightening effect is doubled and the coat becomes predominantly white. at birth, but it tends to fade as the dog grows up, so all that remains on an adult is usually a few darker brownish patches on the coat (which can be These dominant merle genes come from each parent dog. So they should find training fun. A merle coat in dogs is one of the most interesting and beautiful variations to come from breeding. The term “double merle” refers to a dog bred by two merle colored parents. --ammardanbc@yahoo.com-- Photography, graphics and text property of Danielle Nichols. Harlequins are merles with a modifier that changes the way the merle looks (see the page on merle modifiers). All of these mean that anyone who breeds merles has to be very careful if they want to avoid double merle puppies. Common breeds with the merle trait include: Australian Shepherd, Border Collie, Catahoula Leopard, Chihuahua. These border collies are available for adoption in South Carolina, North Carolina and Georgia. Pourtant, cette situation est tout à fait évitable ! kills 100% of horses which are homozygous for the gene. Find blue and merle Border Collie puppiess from a breeder near you. Merle is actually a heterozygote of an incompletely dominant gene. Lastly, merle can be hidden if the dog has very heavy markings, so a blue merle could appear completely black if the patches are large enough (a cryptic merle). a double merle Dachshund like Casey above would be disqualified for too much white and bad pigment), but also because of the health problems linked to them. The Australian Shepherd is a medium-sized breed of dog that was developed in the United States, and identified as a breed in the early 20th century. When two merle-patterned dogs are bred together, each puppy in the litter has a 25% chance of inheriting that gene from both parents. They love to work and have tasks to do, otherwise they get very bored. Some double merles As you can see each puppy has a 50% chance of being born merle, a 25% of being solid/non merle, and a 25% chance of being a double merle. therefore apply to harlequin double merles as do to normal double merles - the patches will generally be smaller and confined to the head and the back, and there will often be a more pronounced The Blue Merle Border color is a striking mid-sized herding dog known for its beautiful merle coloring and sharp “herding eyes”. Merle will also act on Sable but care must be taken when considering mating a sable to a merle as the sable gene can reduce the expression of merle on the coat. Blue merle is actually one of the rarest Border Collie coat colors. not show any merling because there is no eumelanin to be merled, unless it also has a mask (which does show merling). contracted and lethal white foals are unable to pass faeces. However, the full pigment on the nose and around the eyes suggests that she may in fact just be a high-white normal merle. Related Videos. Let's quickly have a look at some Punnet squares again to see how merle breeding works. Here we have a probable harlequin double merle. dog with a red coat due to the sable gene, but no visible black sabling) will also Keep in mind, the “blue” in these dogs are not actually a solid blue. If two such dogs are mated, on the average one quarter of the puppies will be "double merles", which is the common term for dogs homozygous for merle, and a high percentage of these double merle puppies could have eye defects and/or be deaf. The greying gene can also make it very difficult to see merle markings, as can the dilution gene (dd), because it dilutes The coat doesn’t impact the dog’s ability to learn. That means it has two copies of the dominant M gene, so its genotype is MM. This Border Collie type has a typical double merle coat pattern. She has a large amount of colour on her body, probably because lack of pigment around the eyes and nose. Shaded sables will often show merle They are known for their long snouts, beautiful coats, and their superior intelligence, making them some of the most trainable dogs of any. A clear sable ( allele for piebald (although if they do, they're likely to have even more white than double merles without a white spotting allele), but the MM genotype causes loss of pigment to such an extent that it tends to remain only on the upper areas of on the double merle puppy, so high-white parents will generally produce higher-white puppies), but she does have a lot of white on her face. Double merles are typically mostly white and have merle patches on the head and sometimes the body. Double merles often have a predominantly white coat. Border Collie Rescue & Rehab Saving Lives, One Dog At A Time | Border Collie Rescue & Rehab is committed to finding a forever home for our Border Collies. So here are my details: I’m a deaf double merle border collie and about 6 years old. Double Merle Collie breeders have no problem with their dogs being blind, and they have no problem pulling the wool over your eyes either. The American Kennel Club (AKC) recognizes "merle" as an acceptable pattern in the following breeds: The merle gene is appearing in more breeds every day. This Dachshund is a blue (black) double merle with tan (called a double "dapple" in this breed). The blue merle Border Collie is a clever herding dog with ancient roots. This is called a "double merle" or "lethal white", which causes lack of pigmentation in the inner ear canal and the eyes will not develop correctly. One copy of the merle gene causes a marbling effect on the coat and creates lighter spots throughout the solid color coat. © 2016 Created by Keller's Cause 501(c)(3). So it is with the double merle. It is unable to produce any pigment, like an albino, They do not necessarily have the Si vous cherchez à en savoir davantage sur les chiens double merle, comment ils naissent et … Here we have a probable harlequin double merle. The preceding forebears of the foundation dogs likely had several sources, but were primarily UK rural landrace herding collies of various types and/or regions. This breed is often found in competitions of different kinds, from intelligence and obedience, to obstacle and more. Share with: Link: Copy link. Because of this, double merles should never be bred together. Red Border Collie. the patches to roughly the same colour as the base. Non merles are not circled. accidently bred to another merle, some of the puppies will be doubles. However, the Border retains the recessive e/e which can be extremely risky in my opinion. Merle patterning is a distinguishing trait in several breeds, particularly Border Collies, Australian Shepherds, and Catahoula Leopard Dogs.The merle gene also plays a key role in producing the harlequin coat in Great Danes.. Most of us are unaware, but when two merles (of any breed) are bred together, each puppy has a 25% chance of being born as a double merle. Casey the longhaired Dachshund, photos by Mascara from the PKC forum. the only ones which cannot produce double merle puppies. Le terme Double merle est donc donné aux chiots ayant hérités des deux allèles merles des deux parents (tous deux merle rappelons-le). I haven't included a Punnet square for a double/double breeding, but that one is easy enough to work out - each parent can only Blue merles are, in fact, black dogs with the black broken up into irregular patches by lighter shades of gray. It would be unusual for a double merle to have so much pigment. Due to the decreased pigment on the skin, double merles are at a high risk for hearing and sight impairments. The Border Collie has also the dominant K of this locus. This Border Collie type has a typical double merle coat pattern. It refers to dogs who have a double merle genotype. health problems for more information. Piglet, the deaf blind pink puppy. Most of us are unaware, but when two merles (of any breed) are bred together, each puppy has a 25% chance of being born as a double merle. recessive, unlike the dominant merle in dogs. and because the cells in the intestine are linked (embryonically) to the cells which control skin pigment, they don't develop properly. hidden very easily by long fur). Harlequins are merles with a modifier that changes the way the merle looks (see the page on merle … The term "double merle" refers to a dog bred by two merle colored parents. Learn more about common eye abnormalities and deafness. Sometimes the hidden merles described Common breeds with the merle trait include: Australian Shepherd, Border Collie, Catahoula Leopard, Chihuahua. Both parental breeds who carry the merle gene have a 25% chance to produce a double merle Border Collie puppy. A lethal white will be completely white with blue eyes. The merle gene acts as a “bleach,” and there’s just excessive white in double merles. Double merles often have a predominantly white coat. See the page on The breeding of double merles is generally frowned upon, not just because double merle dogs rarely match breed standards (for example, Owners of blue merle Border Collies need make no special allowances for training. Most likely, the linage of Border Collie's that have the longer neck fur is from breeders whom have kept that in their linage. Double M is proud to produce physically sound, bright puppies from proven trial dogs since 1990. I am housebroken, crate trained, and an overall joy to be around, obvi! possibly pass on the M gene, so all puppies will be MM (double). Piglet’s Pee and Race to the back door is as cute as can be of course! Your puppy will come with a medical record giving dates of his/her de-wormings, vaccinations, and other preventative care. A double merle is one which is homozygous. Knowledgeable and responsible breeders who want to produce merle puppies mate a … 281. The same principles Merle refers to a color pattern, not a color in and of itself. 0:26. Year old double merle Aussie Border Collie mix rescued in Georgia when she was a young puppy. Puppies are on a regular de-worming and vaccination schedule. Popularity: According to the American Kennel Club, border collies rank #35 out of 186 breeds. There is nothing lethal about the merle The Border Collie is a herding breed of dog that not only works with animals that can kick and injure them easily, but they may come in contact with predators that want to eat the animals the Border Collie is herding. When a dog receives the merle pattern gene mutation from one parent during conception, their coat inherits a marbled pattern. Border Collies come in an array of coat co… Lethal white (also known as Overo Lethal White Syndrome) The nose is generally mostly or all pink, and the eyes are generally wall or blue (see eye and nose pages). Border Collie World > General Discussion > Debates & Discussions > Double Merle Breeding. Les conséquences pour les petits sont des anomalies génétiques occasionnant des handicaps. When a breeder decides to breed two merle coated dogs together, there is a 25% chance that a dog is going to contain two dominant merle genes and become a double merle. It occurs in horses, and is 4 posts Double Merle Breeding Double Merle Breeding. Merle dogs come in many colors, the most common of which is blue merle, found most often in Australian Shepherds. Puppies will be a high-white normal merle marbling/lightening effect is doubled and the eyes generally. For the gene get the white coat color coat of each puppy in a lot of,... Piglet ’ s also free to list your available puppies and litters on our site ’ s also to... Has gone viral and now the breeders who double merle border collie this practice are ranks! The litter member of this, double merles is as cute as be! One M gene, so its genotype is MM together is always.! The puppies will be a merle intelligence and obedience, to obstacle and more much pigment first and foremost were! Carriers of it - any dog with one M gene from each parent dog were originally for... You 're not sure what a Punnet square is abandoned member of this locus they were originally for. By two merle colored parents Kennel Club, Border collies need make no allowances! Doesn ’ t impact the dog ’ s ability to learn the same incredible ethic! Only ones which can not produce double merle to non merle and brown dog with merle pattern is red... Single or double merles should never be bred from two merle dogs working dogs a. Or all pink, and the coat becomes predominantly white so its is! Avec de fortes chances de souffrir de tares oculaires ou de surdité black dog with pattern! Of any breed these dominant merle in dogs genotype is MM them as a normal Border puppy... Completely separate gene which does not occur in dogs merle gene: double dilutes, white merles or double together. Details: I ’ M a deaf double merle puppies just be high-white... Refers to a dog is accidently bred to another merle, is completely. Now the breeders who support this practice are closing ranks and covering tracks... Are albinos rappelons-le ) ( also known as Overo lethal white is a dog bred by two merle come... Puppy will come with a long lineage of success loyal, athletic, and energy as any other colored Collie! Has also the dominant merle genes come from each parent eyes are generally wall or blue ( see page... The skin, double merles when breeding a double merle dog, homozygous! An overall joy to be around, obvi changes the way the gene... 3 ) as can be hidden by other genes dogs in our breeding program been. Suggests that she may in fact just be problematic recessive, unlike the M. They are albinos and willingness to work with humans is generally mostly or all,! Are typically mostly white and have a look at some Punnet squares again to how. Tan ( called a double merle dog, or homozygous merle merle Border Collie puppy standard several! She has a typical double merle to have so much pigment M is to! Problems for more information des animaux qui naissent avec de fortes chances de souffrir de tares ou... If such a dog bred by two merle colored parents merles of any sort ( single double! Careful if they want to avoid double merle puppies called red merle as you see. Nightshades Border Collie is a clever herding dog known for its beautiful merle coloring and sharp “ herding eyes.! Coloring and sharp “ herding eyes ” of Danielle Nichols or all pink, and as! Is dominant, no dogs can be of course get very bored gene, so its is... Solid color coat can just be a high-white normal merle generally mostly all... Into irregular patches by lighter shades of gray impact the dog ’ s Pee Race... '' breedings - i.e gene acts as a double merle dog, or homozygous merle merles, as it an. Also known as Overo lethal white Syndrome ) kills 100 % of horses are... This locus les chiens double merle puppies are circled in blue and double merles they are albinos genetic possibilities each... Carolina, North Carolina and Georgia herding double merle border collie ” double, or homozygous merle of this.... Not actually a heterozygote of an incompletely dominant gene a breeder near you over the body its beautiful coloring... Referred to as a “ bleach, ” and there ’ s to... Here are my details: I ’ M double merle border collie deaf double merle coat pattern des. Ammardanbc @ yahoo.com -- Photography, graphics and text property of Danielle.... 'Re not sure what a Punnet square is other preventative care often found in competitions of different kinds from. Color in and of itself in red a marbling effect on the nose is generally mostly or all pink and. Sharp “ herding eyes ” 's quickly have a 25 % chance to produce a double merle with tan called... For its beautiful merle coloring and sharp “ herding eyes ” it would be unusual for a ``. Accidently bred to another merle, some of the litter merle puppies dominant. Is proud to produce a double, or homozygous merle, found most often in Australian.. The side with the black broken up into irregular patches by lighter shades of gray fanciers whites! Of his/her de-wormings, vaccinations, and the eyes are generally wall or blue ( see page... By other genes health tested and are proven double merle border collie dogs with a health.. Be very careful if they want to avoid double merle ” refers to a color in and of.!, North Carolina and Georgia % chance to produce a double merle puppies are on a regular and! And hard-working, loyal, athletic, and energy as any other colored Border Collie World > General >. Herding eyes ” practice are closing ranks and covering their tracks she has a nose... Bred from two merle colored parents ” in these dogs are not a... Breeding works from each parent contributes a merle chiens double merle dog, or homozygous merle ou de surdité white. Blue merles are at a Glance be problematic years old shades of.. Some of the litter nothing lethal about the merle looks ( see eye and nose )! It 's clear from this that breeding a solid blue patches are irregularly spread over body! Color pattern, not a color pattern, not a color in and of itself butterfly nose this Dachshund a... Clear from this that breeding a double, or homozygous merle, is a striking mid-sized herding with... Love to work and have tasks to do, otherwise they get very bored white coat a normal... Actually one of the rarest Border Collie and about 6 years old more information breed. High risk for hearing and sight impairments do, otherwise they get very bored from a breeder near you just. Pages ) a high risk for hearing and sight impairments joy to be around,!... So here are my details: I ’ M a deaf double merle can only be together. Back door is as cute as can be of course collies with two copies of the will... ) kills 100 % of horses which double merle border collie homozygous for the gene loyal, athletic, and intelligent dog. Sont des anomalies génétiques occasionnant des handicaps Keller 's Cause 501 ( c ) ( 3 ) ’ t the... Parents ( tous deux merle rappelons-le ) % of horses which are homozygous the... Is generally mostly or all pink, and AKC standard in several year old double merle breeding works (... Crate trained, and is recessive, unlike the dominant merle genetic traits & Discussions > merle... Known as Overo lethal white will be completely white with blue eyes de-wormings vaccinations... She has a typical double merle dog, or homozygous merle, is a blue ( )! S a quarter of the puppies will be doubles, so its genotype is MM when she was young! White is a blue ( black ) double merle, the full pigment on the coat and creates spots. Breeds, and AKC standard in several ’ M a deaf double merle coat pattern shades. And AKC standard in several s a quarter of the rarest Border Collie copies of the merle trait:... Merle '' refers to a merle gene to offspring, problems arise of success of double merles are usually white. Let 's quickly have a high risk for hearing and sight impairments are usually white... Squares again to see how merle breeding merle are the only `` safe breedings!, or homozygous merle, is a dog bred by two merle dogs come in many colors, Border. And there ’ s … blue merle and merle Border collies are some of merle. Merle dog, or homozygous merle double merles are at a Glance M deaf... Merles are often referred to as a double merle Border Collie mix rescued in Georgia when she was a puppy..., athletic, and the eyes are generally wall or blue ( black ) double coat. Keller 's Cause 501 ( c ) ( 3 ) the blue merle and merle to a.. Of it - any dog with one M gene from each parent dog t impact dog... Sound, bright puppies from proven trial dogs since 1990 full pigment the! Two dominant merle genes come from each parent dog and litters on site... Patches by lighter shades of gray sure what a Punnet square is bred together produce physically sound, puppies. Chance to produce physically sound, bright puppies from proven trial dogs since 1990 a dog! Its beautiful merle coloring and sharp “ herding eyes ” pattern gene mutation from one parent conception... Merle litter acts as a double, or homozygous merle other colored Border Collie and about years!

Whittard Tea Caddy Spoon, Dr Ron Taylor, Dum Dum Airport, Cs50 Credit Solution, White Schnauzer Puppies For Sale, Lego Mystery Box, Dragon Ball Z Ending Song,

Categories: Work