Effect of ear-corn silage feeding on meat productivity of fattening pigs

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  • HASEGAWA Takanori
    Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine NH foods Ltd., R&D Center
  • MORIMATSU Fumiki
    NH foods Ltd., R&D Center
  • KAWAMOTO Keiko
    Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine
  • HIDAKA Satoshi
    Department of Life Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine

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  • イアコーンサイレージ給与が肥育豚の産肉性に及ぼす影響
  • イアコーンサイレージ キュウヨ ガ ヒイク ブタ ノ サンニクセイ ニ オヨボス エイキョウ

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Abstract

The production and use of ear-corn silage (ECS) have been studied to further promote utilization of self-supplied animal feed in Hokkaido. The purpose of this study was to evaluate the effects of ECS feeding on the meat productivity of fattening pigs. Fattening pigs (an average body weight of 65.4kg) were divided into 3 groups with 6 animals in each group : the control group fed with “commercial compound feed alone,” the ECS group fed with mixed feed consisting of “80% commercial compound feed+20% ECS (dry matter)” and the ECEFS group fed with mixed feed consisting of “60% compound feed+20% ECS+20% eco-feed silage (EFS) consisting primarily of starch pulp (dry matter).” All pigs were fattened until their average body weight reached 117.9kg. Feed conversion ratio (Feed intake/Gain) was similar in the control and ECS groups, and was significantly higher in the ECEFS group (P < 0.05) at total period. No significant differences were found in all of the meat quality parameters except skatole. Fat level of skatole was significantly lower in the ECS and ECEFS group (P < 0.05). These results indicate that replacement of 20% ECS as dry matter has comparable productivity to no replacement control, and feeding of ECS to fattening pigs may reduce unpleasant skatole smell of produced meat. Our study suggests that ECS can be useful as alternative feedstuffs for fattening pigs.

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