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Brown short haired tabby10/18/2023 ![]() Kitten formula such as KMR Liquid Milk Replacement contains all the essential vitamins and minerals to help them grow into strong and healthy cats.Ī newborn kitten will usually take a full 7 – 8 weeks before it’s put on it’s first few pounds of weight. Their primary source of food outside of nursing will be kitten formula. They will participate in a lot of nursing with the mother cat as they build their strength and try to add some weight. When a kitten is born into a litter, usually with other kittens, it will be extremely weak at this stage. They also discover purring as well as begin building trust with the owners. Kittens begin developing their eyesight, forming their own unique eye pigment, learning how to be vocal, and how to hear. This is when they are first discovering who they are and what they can do. The first stage of any cat’s life is the newborn kitten stage. I’ll also share with you some common health issues in domestic cats that you may run into during specific stages of the growth timeline. We’ll break down everything from the newborn kitten stage all the way through adulthood and the final stages of a cat’s life. This guide is geared towards tabby cats but will get you to show you what to expect at certain ages and sizes. They run around, play with you, show plenty of affection and truly love life! Whether it’s a tabby pattern cat or not, cats are all unique and have different growth timelines and life expectancies.īecause each cat is different, I decided to compile as much research as I can into this helpful guide. The order of dominance in this allelic series is B dominant to b, and b dominant to b l (B > b > b l).If you have a tabby cat (or any cat for that matter), you know just how much of a joy they are to have. The b allele produces the brown or chocolate phenotype and the b l allele produces a light brown or cinnamon phenotype. The wild-type B allele produces normal, black coloration (full production of eumelanin). The two variants form an allelic series that lead to these shades of brown. A lighter brown variant commonly called cinnamon/red is caused by a nonsense mutation (c.298T>C) that also results in an truncated protein. The darker shade of brown coat color referred to as chocolate/chestnut results from an intronic mutation that causes a splice variant (c.1261+5G>A) which results in a truncated protein. Research by Lyons Feline Genetics Laboratory at University of California, Davis identified two mutations in this gene that cause different variations of brown coat colors in cats. The tyrosinase-related protein-1 ( TYRP1) gene affects the amount of black pigment (eumelanin) produced, and mutations in this gene are known to cause brown coat color phenotypes in many species of mammal. Note: Overall appearance of the cat's coat also depends on expression of and complex interactions with other genes.Ĭinnamon (center) and chocolate (left and right) British Shorthair kittens Cats with b l/b l genotype will be cinnamon and will transmit this cinnamon variant to all of their offspring.Matings between two carriers of cinnamon are predicted to produce 25% cinnamon kittens. They will transmit this cinnamon variant to 50% of their offspring. Cats with b/b l genotype will be chocolate and are carriers of cinnamon.Cats with b/b genotype will be chocolate and will transmit this chocolate variant to all of their offspring.Cats with B/b l genotype will be full-colored and are carriers of cinnamon.Matings between two carriers of chocolate are predicted to produce 25% chocolate kittens. They will transmit this chocolate variant to 50% of their offspring. Cats with B/b genotype will be full-colored and are carriers of chocolate.They cannot produce chocolate or cinnamon offspring and cannot transmit these chocolate or cinnamon variants to any of their offspring. Cats with B/B genotype will be full-colored and will not display chocolate or cinnamon coloration.Mode of Inheritance: Autosomal recessive (order of dominance is B > b > b l)Īlleles: B = Wild-type black, b= Brown (chocolate), b l = Light brown (cinnamon)īreeds appropriate for testing: Many breeds ![]() Phenotype: Cats with brown gene variants have reduced eumelanin (black pigment) and appear brownish in color. British Shorthair with cinnamon coat color (left) Havana Brown with chocolate coat color (right) ![]()
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