Controlled Feeding of Fermented Liquid Feed using Food Wastes : : Effects on the Growth Performance, Carcass Characteristics and Meat Quality of Finishing Pigs

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  • 発酵リキッドフィーディングにおける定量給餌と性別管理が生産性に及ぼす影響
  • ハッコウ リキッドフィーディング ニ オケル テイリョウキュウジ ト セイベツ カンリ ガ セイサンセイ ニ オヨボス エイキョウ

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Abstract

We conducted an experiment to prevent heavy fat deposition induced by ad libitum feeding of liquid feed. Three-way crossbred pigs (LWD) were randomly allotted to treatments arranged in a 4 * 2 factorial design (4 feeding regiments and 2 sexes) at 70 kg body weight. Pigs were fed a control diet (control group) or fermented liquid feeds at levels meeting 90%, 100%, or 110% of the Japanese Feeding Standard for Swine (JFS, 2005) daily energy requirement (i.e., the 90%, 100%, and 110% groups, respectively). The results are as follows; 1. The average daily gain in the 110% group was significantly greater than that of the control group (P < 0.05). The feed conversion calculated on a dry matter basis in the liquid feeding groups was significantly higher than that of the control group (P < 0.05). 2. The dressing percentages of the liquid feeding groups were significantly higher than that of the control group (P < 0.05). The average back fat thicknesses at the shoulder, back, and loin of the 110% group were significantly higher than those in the control group (P < 0.05). 3. No significant effect among treatments was observed with respect to meat qualities. From sensory evaluations after heat treatment, the tenderness, juiciness, and overall preference of longissimus dorsi muscle in the liquid feeding groups were significantly higher than those of the control group (P < 0.05). 4. The 100% and 90% groups exhibited benefits in gilts and barrows, respectively. These results suggest that to fatten gilts and barrows beneficially, liquid feeding should be controlled to 90% and 100% of the JFS daily energy requirement, respectively.

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