トウフ粕サイレージの給与がつしま地鶏の飼料利用性ならびに産肉性に及ぼす影響

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This study was conducted to examine the fermentative quality and nutritive value of 3 different kinds of soybean curd residue (SCR) silages, i.e. 70% SCR and 30% wheat bran (SCR+WB), 70% SCR and 30% rice bran (SCR+RB), 70% SCR and 30% polished rice bran (SCR+PRB) on fresh weight basis, and to investigate the effect of altenative feeding of the silage on the feed utilization and meat productivity of 36 Tsushima crossbred chickens (♀) during 12-25 weeks of age. The results obtained were as follows: All the silages showed a lower pH(<4.2) and both the SCR+WB and SCR+RB silages contained more than 2% of lactic acid. The V-SCORE, indicative of good quality silage, got over 90 points in the SCR+RB and SCR+PRB silages, which were higher than SCR+WB silage. Apparent metabolizable energy of SCR+WB, SCR+RB and SCR+PRB silages were 1.71, 1.84 and 1.55 kcal/g, and crude protein were 9.9, 9.7 and 7.9%, respectively. Feed conversion, body weight, carcass characteristics and sensory test to the breast and thigh meats at 25 weeks of age were not significantly different between the chickens fed formula feeds only (control) and those fed formula feed with 30% SCR+WB, SCR+RB or SCR+PRB silages. In conclusion, it is suggested that ensiling SCR with substrates (WB, RB or PRB) improves preservation and fermentative quality, especially the 2 latter are more superior. Moreover, feed utilization and meat productivity of crossbred Tsushima chickens were not affected by substituting SCR silage for formula feeds. Thus, SCR silages were considered to be one of the most promising self-sufficient feed for local meat-type chickens.
2010-03-16

トウフ粕サイレージの給与がつしま地鶏の飼料利用性ならびに産肉性に及ぼす影響

スポンサーリンク

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スポンサーリンク