THE GENETIC BASIS OF CHINCHILLAS\u27 COLOUR INHERITANCE

Abstract

Činčila je južnoamerički glodavac koji se još uvijek većinom uzgaja radi krzna, iako se u pojedinim zemljama njihovo meso poslužuje kao specijalitet. U prirodi je gotovo iščeznula pa se njen opstanak održava farmskim uzgojem. Danas se uzgoj činčila za krzno zabranjuje u sve više zemalja, što je ustupilo mjesto uzgoju činčile kao kućnog ljubimca. Iznimno su čiste životinje te stoga i vrlo jednostavne za držanje i njegu. Vrlo su otporne te rijetko obolijevaju ukoliko se pravilno i redovito hrane, čiste i čuvaju u odgovarajućim uvjetima. Ovom glodavcu dlaka je izrazito meka i rastresita. Standardna boja je tamnosiva po leđima, dok je trbuh svijetlosiv do bijel. Dosadašnjim farmskim uzgojem selekcionirani su brojni mutanti tako da njihova dlaka može biti u različitim nijansama crne, bijele ili bež boje. Daljnjom kombinacijom tih mutanti dobivena je široka paleta danas postojećih boja krzna. Boja činčila ovisi o zastupljenosti pojedinih gena i njihovim kombinacijama, što je dovelo do pojave letalnih mutacija. Poznavajući genotip odgovoran za pojavu pojedine boje u ovih životinja, otvaraju nam se brojne mogućnosti u selekciji određenih boja kod potomaka. Na taj način zadovoljavaju se sve veće potrebe tržišta za činčilama kao kućnim ljubimcima pri čemu boja dlake ima značajnu ulogu kod njihova izbora.Chinchilla is a South American rodent, which is being bred primarily for its fur, although in some parts of the world their meat is served as a speciality. It is almost extinct in nature so its existence is being preserved by farm breeding. Breeding of chinchillas for fur is being banned in many countries all over the world, including Croatia, so chinchillas nowadays serve mostly as house pets. Chinchillas are very easy to keep at home because they are very clean animals. Also, they are very resistant to disease and rarely get ill if they are fed, cleaned and kept properly and regularly. This rodent has very soft and mealy fur. Standard colour is dark-grey on the back and light grey to white on the belly. Over the years, farm breeding has given us various mutant species so their fur colour can vary from black to white and beige. Further combining of these mutations created a whole pallet of today-existing colours in chinchillas. A chinchilla\u27s colour depends on its genes and various combinations, which led to emersion of lethal genes. By knowing the genotype responsible for specific colour variations in chinchillas, we have a whole spectre of possibilities in choosing the colour of offspring. By doing that, a growing demand for chinchillas as house pets on the market can be satisfied because the colour of the animal can play a huge role in choosing a house pet

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