In most of the cases the dogs kill the boar however if the boar is a big one and has killed a few dogs(i have seen big tuskers kill 4 to 5 dogs by ripping them open from throat to crotch)then the huntsman steps in and kills it either with an axe or spear.Regarding the breed all i know is that two kinds of dogs are used,ones which flush the boar out of the bush and the second kind which go for the kill.I will ring up my friend and ask him about the breed and let you know.