Abstract

We investigated the effects of dietary supplements of probiotics, illite, active carbon and hardwood vinegar on growth performance, carcass characteristics and fatty acid composition in finishing pigs. One hundred fifty pigs ($Landrace{\times}Yorkshire{\times}Duroc$; $32.3{\pm}1.3 kg$ average initial body weight) were used in a 100 day experiment. Pigs were randomly placed into five experimental feeding groups (control, 0.2% probiotics, 1.0% illite, 1.0% active carbon and 1.0% hardwood vinegar) and were slaughtered at approximately 110 kg live weight. There was a slight, but insignificant increase in average daily body weight gain and feed intake among all treatment groups. Feed conversion was reduced when probiotics were added (p<0.05). There were no significant differences in the carcass rate and back fat thickness among the all treatment groups including controls. However, the frequency rate of grade A increased in the groups fed 1.0% active carbon and hard- wood vinegar compared to controls. Stearic acid content was lower in the groups fed probiotics illite active carbon and hardwood vinegar (p<0.05). Oleic acid contents were higher only in the groups fed 1.0% active carbon and hardwood vinegar (p<0.05).

본 시험은 육성-비육돈에 대한 생균제, 일라이트, 활성탄 및 목초액의 사료적 가치를 평가하기 위하여 시판 생균제 0.2%와, 일라이트, 활성탄 및 목초액을 각각 1.0%를 삼원교잡종($Landrace{\times}Yorkshire{\times}Duroc$, 평균체중 $32.3{\pm}1.3kg$)육성-비육돈에게 100일간 급여하여 증체량, 사료섭취량, 도체등급, pH, 및 지방산 함량을 분석하였다. 일당 증체량과 사료섭취량은 처리구에서 증가하는 경향이지만 유의한 차이는 없었다. 사료요구율은 도체율과 등지방 두께는 전처리구에서 유의한 차이는 없었으나, A 등급 출현율은 활성탄과 목초액을 1.0% 급여함으로서 대조구에 비하여 크게 증가하였다(p<0.05). 육의 pH는 대조구를 포함한 모든 처리구에서 정상범위인 5.53-5.77로 나타났다. 포화지방산인 stearic acid 함량은 대조구보다 생균제, 일라이트,활성탄 및 목초액을 급여함으로서 낮았으며(p<0.05), 불포화지방산인 oleic acid 함량은 목초액과 활성탄을 각각 1.0% 급여할 경우 높았다(p<0.05).

Keywords

• probiotics;
• illite;
• active carbon;
• hardwood vinegar;
• fatty acid