Savannah Cat Chat - THE Place for Savannah Cat Talk

Welcome to the Savannah Cat Chat Forum! Our forum has been in existence since 2012 and is the only one of its kind. We were here, serving the savannah cat community before Facebook and Instagram! Register for a free account today to become a member! Please use an email program other than Hotmail, since Hotmail accounts are blacklisted by many servers and ISP's. Once signed in, you'll be able to participate on this site in some of the forums by adding your own topics and posts. But in order to take advantage of the full features, such as a private inbox as well as connect with other members ad access some of the larger topics, a donation of $2.99/mo or $25/yr is requested. This will allow us to continue running this forum!

Quick Question! F4 rare fertile male

Elara

Savannah Kitten
#1
Hello eveybody, Im just looking for some clarification, My F4 savannah females father is a rare fertile f4 male, I was wondering if that puts her more in the category or percentage of an F3? EVen though she is officially an f4, or what would be any differences between in her, rather than if she had the usual F5 or later male in the breeding process. Will this make her a bit bigger than normal?, Or will it create no change??
Appreciate and feedback guys thanks!
 

SV Dad

Savannah Super Cat
#2
Tricky question based on the information. If it is a F4, it is four generations from a serval, and on the mothers side until F6 usually.
That being said, say the mother was F3 and dad was F4. Theoretically, this is 18.75%, at the least. But genetics are a crap shot at best. Hard to tell what Serval traits are expressed beyond the spots.
 

Brigitte Cowell

Moderator
Staff member
#3
Having an F4 father does increase the theoretical % but you would find that most SBTs have higher % than you would get with the corresponding outcrossed generation. I'm not sure that it would be enough to make much of a difference and unlikely to make larger than normal. Females of all generations (even F1) are generally smaller than the males...

My F5 SBT kittens have three different F4 males in their pedigrees, the females are still pretty small...especially compared to their brothers!
 

Patti

Admin
Staff member
#4
Hello eveybody, Im just looking for some clarification, My F4 savannah females father is a rare fertile f4 male, I was wondering if that puts her more in the category or percentage of an F3? EVen though she is officially an f4, or what would be any differences between in her, rather than if she had the usual F5 or later male in the breeding process. Will this make her a bit bigger than normal?, Or will it create no change??
Appreciate and feedback guys thanks!
Yes your cat's TWiG (theoretical wild gene) will likely be around 9% or more (depending on how many Savannahs grandparents, great-grandparents, etc. there are). I don't know that you will find any significant differences in her except that she might be a bit typier than the typical F4, however IMHO that is more dependent upon the individual parents than the TWiG, so not something that is guaranteed. Same goes for size - it depends on the size of the parents, not the TWiG. My F4 male is over 11% and he has produced some very nice kittens, he has also produced some 'plain janes' so really guarantee for anything based on theoretical percentages.
 

Patti

Admin
Staff member
#5
Tricky question based on the information. If it is a F4, it is four generations from a serval, and on the mothers side until F6 usually.
That being said, say the mother was F3 and dad was F4. Theoretically, this is 18.75%, at the least. But genetics are a crap shot at best. Hard to tell what Serval traits are expressed beyond the spots.
Actually, the filial generation is calculated by how many generations from the serval the closest parent is, regardless of whether it is the mother or the father. So my F4 male produces F5s regardless of the generation of the female, as long as her generation is later than his. Also, the kitten would not be 18.75% - an F4 from an F3 x F4 crossing would be about 9.4% (if both parents are A coded) since the kitten gets 1/2 the genes from each parent ;)
 

admin

Paige
Staff member
#8
Hello eveybody, Im just looking for some clarification, My F4 savannah females father is a rare fertile f4 male, I was wondering if that puts her more in the category or percentage of an F3? EVen though she is officially an f4, or what would be any differences between in her, rather than if she had the usual F5 or later male in the breeding process. Will this make her a bit bigger than normal?, Or will it create no change??
Appreciate and feedback guys thanks!
Is this F4 a savannah?