Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | |||
care:test_breeding [2016/06/08 19:23] – external edit 127.0.0.1 | care:test_breeding [2017/06/07 17:29] (current) – becker | ||
---|---|---|---|
Line 6: | Line 6: | ||
There is a lot that can be learned from test breeding, however, it is usually only used to test for the presence of easy to identify traits - typically those that are determined by a single gene. People don’t usually test breed for type - developing type is a much slower process and can take your whole career. | There is a lot that can be learned from test breeding, however, it is usually only used to test for the presence of easy to identify traits - typically those that are determined by a single gene. People don’t usually test breed for type - developing type is a much slower process and can take your whole career. | ||
- | Test breeding is used to determine if a particular animal is carrying a particular | + | Test breeding is used to determine if a particular animal is carrying a particular |
When you do a test breeding, you will always have one parent who either shows the trait or who you KNOW is carrying it. Breeding two animals together when you don’t know if EITHER of them is carrying the trait you are looking for may turn up nothing for a long time. | When you do a test breeding, you will always have one parent who either shows the trait or who you KNOW is carrying it. Breeding two animals together when you don’t know if EITHER of them is carrying the trait you are looking for may turn up nothing for a long time. | ||
Line 12: | Line 12: | ||
Since we are looking to see if a particular rabbit is carrying a specific recessive gene, we will want to breed to a rabbit who is KNOWN to carry that gene. Of course, if we are trying to see if this rabbit is carrying the genes for wolf teeth for example, we would NOT breed from an animal that actually HAS wolf teeth. For that matter, you probably shouldn’t even keep any rabbit that is known to carry undesirable traits. If this is your reason for test breeding then you would breed related animals of the line you suspect has the trait. If it turns up in the litter, then BOTH parents should be eliminated from your breeding program. | Since we are looking to see if a particular rabbit is carrying a specific recessive gene, we will want to breed to a rabbit who is KNOWN to carry that gene. Of course, if we are trying to see if this rabbit is carrying the genes for wolf teeth for example, we would NOT breed from an animal that actually HAS wolf teeth. For that matter, you probably shouldn’t even keep any rabbit that is known to carry undesirable traits. If this is your reason for test breeding then you would breed related animals of the line you suspect has the trait. If it turns up in the litter, then BOTH parents should be eliminated from your breeding program. | ||
- | If you are looking for certain | + | If you are looking for certain |
There are a few animals that can be particularly useful in a test breeding, and those are the ones who carry the most recessive genes. A lilac self, for example, is homozygous recessive for almost everything: it is aa bb C- dd E-. You can use it to tell if another animal is carrying self, chocolate, OR dilute. A lilac tort (or crème) takes it one step further: it is aa bb C- dd ee. | There are a few animals that can be particularly useful in a test breeding, and those are the ones who carry the most recessive genes. A lilac self, for example, is homozygous recessive for almost everything: it is aa bb C- dd E-. You can use it to tell if another animal is carrying self, chocolate, OR dilute. A lilac tort (or crème) takes it one step further: it is aa bb C- dd ee. | ||
- | Another animal that can be valuable for test breeding is a red-eyed white (albino). It carries cc on the colour | + | Another animal that can be valuable for test breeding is a red-eyed white (albino). It carries cc on the color locus and that means that ANY non-white babies are showing the C-gene from the test parent. Have a castor and want to know if it’s carrying chinchilla? Breed to a white. Do you suspect your otter is carrying Californian? |
- | Many pedigree programs let you track colours | + | Many pedigree programs let you track colors |