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OwnerMasahide Nakata, Mampei Kobayashi +1inventors
InventorsMasahide Nakata, Mampei Kobayashi, Masahiko Fukayama
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Disclosed are a breeding method of a female pig for propagation characterized by feeding at least one lipid selected from a fatty acid having 12 to 24 carbon atoms which has a melting point falling in a range of −60 to 40° C. and an iodine value falling in a range of 30 to 470 and which has 2 to 6 double bonds in a molecule, a triglyceride containing the above fatty acid and a metal salt of the above fatty acid, and a feed for a female pig for propagation containing the above lipid in a proportion of 0.5 to 10 % by weight in terms of the fatty acid described above. According to the breeding method of a female pig for propagation of the present invention, breeding results can be elevated by further increasing a litter size, allowing the number of delactation to grow large, shortening the days of returning estrus and increasing an annual average delivery frequency.
A feed adapted to be fed to a female pig for propagation characterized by comprising at least one lipid selected from a fatty acid having 12 to 24 carbon atoms which has a melting point falling in a range of −60 to 40° C. and an iodine value falling in a range of 30 to 470 and which has 2 to 6 double bonds in a molecule, a triglyceride containing said fatty acid and at least one selected from a group consisting of a calcium salt and a magnesium salt of said fatty acid in a proportion of 0.5 to 10% by weight in terms of said fatty acid.
The feed as described in cliam 1, wherein said at least one selected from a group consisting of a calcium salt and a magnesium salt of said fatty acid is produced by reacting a fatty acid with a metal oxide or a metal hydroxide by means of an extruder having at least a raw material-feeding zone, a kneading and reacting zone and a cooling zone.
Dependencies are inferred from the claim text.