NEW MATERIAL:A recombinant mink (pre)growth hormone derived from mRNA secreted from hypophysis of mink. EXAMPLE:A recombinant mink growth hormone is a polypeptide having whole or a part of amino acid sequence expressed by the formula. USE:Used for growth acceleration, etc., of cultured mink. PREPARATION: Various manifestation vectors containing deoxyribonucleotide chain coding whole or a part of amino acid sequence of mink growth hormone are constructed according to analyzed amino sequence of mink growth hormone and respective vectors are introduced into Escherichia coli, Bacillus subtilis, photosysnthetic bacterium, yeast or animal cell, etc., and cultured, then recombinant mink (pre)growth hormone in the culture medium is separated, thus purified.
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