NOW im getting some good response thanks for the info LETS pretend get your heads out of the sand IF there is trouble brewing in this county and their comes a time you need protection for you and your personal belongings a large intelligent dog with the ability to
protect you may save your life
Dogs are a commodity. If such a scenario played out, it's quite likely you'd be eating the dog at some point.
most large mastiff type breeds are not the brightest or easy to train and many are not that loyal or trustworthy
This statement tells me that you have spent little to no time around working mastiffs. What part of the country are you in? Here we have the pacific nw working dog expo, featuring a slew of brilliant cane corsos, boerboels, and other molosser dogs working in PP sport alongside various shepherd dogs. They are EXTREMELY loyal to their families.
If you're embarking on a breeding venture with these dogs, and looking for specific traits I suggest going out to some of these types of events, tagging along on actual boar hunts, etc. so you can get a feel for the different breed's working styles. Talk to the people who live with them, learn as much as you possibly can BEFORE putting a litter on the ground.
many dogs like shepherds ,
collies,dobermans may be willing to protect you but could do little against an intruder with a pit bull
Frankly, this scenario sounds somewhat delusional. Pitbulls are not some freaky killing machine, and I've NEVER heard of a home intruder bringing a dog with them for the crime. Ever. Honestly, the pit would probably run up and lick you all over while it's owner tried to rob you.
in terms of survival a dogo can run all day tracking a wild boar and actually kill it, this could be used to feed many in a survival situation
Yes they can, at the same time, not all parts of the country have a surplus of wild hogs. In a survival situation, people would be better off maintain a herd of fryer rabbits and some chickens than depending on a large dog who is going to consume a lot of meat year round, and quite possibly get killed himself while out hunting.
but they are not loyal enough ,like a shepherd to stay by your side as they roam like many hunting dogs
There is a reason WHY hunting dogs roam. If you breed that close working style into dogos, you aren't going to have a boar dog any more. In order to capture certain game hunting dogs have to go far afield. That's a fact of life. If you take that out of the equation, they will be less effective as hunters and that goes counter to your whole reason for wanting to cross them.
The shepherd dogs were bred to be close working, as they work WITH a handler. There aren't too many hunting breeds that are close working. The only two I can think of on the top of my head are the wirehaired pointing griffon and basset hound. Someone else who knows/hunts more can tell you more about this.
I know of no large breed that has the loyalty and intelligence ,trainability of a shepherd
This tells me you really need to spend more time working with dogs in general. Each breed is different, shepherds have a reputation as being trainable, because they are easy to motivate. It is easy to train hounds, bullies, etc. when you know how to motivate them.
If you're wanting to embark on creating a new breed, or a purpose bred cross then you need to know exactly what is out there to know what breeds really have the traits you want. Not go off heresay or a reputation.
and the endurance ,protection and hunting ability of the dogo and both dogs have many simialar traits f1 is a beginning and selective breeding should not be that difficult I am starting with top quality dogs my biggest problem will be outcrossing and inbreeding
Some things to keep in mind:
Health testing. Molossers and german shepherds are both notorious for orthopedic problems. Your dogs will be 100% useless if their hips and elbows give out by the time they are three years old. All breeding stock should be screened either by OFA or pennhip at 2 years old. Other issues to look for are cardiac problems, thyroid, cancer. You need to look at the health problems prevalent in
both breeds, and screen for
both.
Hybrid vigor only works in the F1, and only if both parents are not carrying the problem. Since both breeds share some of the same problems, you can still get affected F1 puppies. This becomes even more critical in subsequent generations, since at some point you will have to line breed. That is an essential step to creating a homozygous population (i.e. new breed)
Another thing to think about is the number of dogs you're talking about working with. The American Livestock Breeds Conservancy designates a breed "Endangered" when the population goes under 2,000. That is the number needed to maintain enough genetic diversity to prevent fatal bottlenecking. Are you going to be able to maintain a high enough population of breeding dogs to prevent that from happening? Because if you're having to outcross to pure shepherd or pure dogo every few generations, you will never get any consistency in your breeding program.