On the offspring of rabbit-does mated with two sires simultaneously

摘要: From the above paper we may draw following conclusions: 1. The possibility of fecundation several eggs one female by two different sires during rutting period has been methodically ascertained. 2. Heterogeneous foetuses derived from such successful double mating, i.e. developing simultaneously, manifest their respective colour as well that offspring in total independence each other. 3. If there exists an essential difference weight rabbits breeds, itself even when heterogeneous develop simultaneously doe. On other hand, presence breeds mother cause positive influence on new-borns belonging to either type. This can, however, not be detected first filial generation enlarged specimens. 4. The increase mating ought considered modification sense given Baur. It is possibly due introduction certain substances characteristic type, into surroundings, or interior those