Hereafter it shall be unlawful for any person or persons, company or corporation to turn loose upon any common or public range in this state any she or female cattle unspayed and over the age of nine months without at the same time turning loose and keeping herded with the same, at the rate of at least one good bull, not less than nine months nor more than eight years old, of at least one-half pedigree stock, to every twenty head of such she or female cattle; and any person or persons, company or corporation, violating the provisions of this section shall, upon conviction thereof, be punished by a fine of not less than twenty-five [($25.00)] nor more than five hundred dollars [($500)], and be liable to the person or persons injured or damaged by such violation in an action at law for the amount of the injury or damage sustained: provided, further, that the words, “pedigree bull,” shall not be construed to mean a Texas or Mexican bull.