sentence: SF , another composite breed , has a smaller variability but carries alleles representative of the warm-blooded breed group , while the BOUL breed carries alleles seldom present in the two other breeds but frequent in draught horses.Finally , several considerations have to be taken into account before taking final conservation decisions [ 34 ] , such as the special range of performances for given traits , current production systems associated to the breed , socio-cultural value , or dynamics of the group of breeders .