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반추위 발효 조절 항생제 대체 물질이 한우 거세우 생산성과 육질특성에 미치는 영향

Effects of Dietary formulated feed Additive on Growth Performance and Carcass Traits in Hanwoo Steers

  • 류채화 (전북대학교 축산학과) ;
  • 박해령 (농업기술실용화재단 농식품분석팀) ;
  • 조상범 ((주)칼스엔비티 순환농축산연구소, 전북대학교 동물자원과학과) ;
  • 최낙진 (전북대학교 동물자원과학과)
  • 투고 : 2016.10.10
  • 심사 : 2016.11.10
  • 발행 : 2016.11.30

초록

The present study was conducted to evaluate the effects of dietary formulated feed additive on growth performance and carcass traits of Hanwoo steers. A formulated feed additive reported to reduce heat load in the rumen in our previous research was used (Cho et al., 2014). Total 32 herds of Hanwoo steers were assigned into two groups of control and treatment. Total mixed ration was provided as basal diet for cattle and 100 g of additive was supplemented on diet for treatment. Feeding trial was performed during 120 days before slaughter. For growth performance, 3 periods (0~90 days; 90~120 days; 0~120 days) were allotted and average daily gain, feed requirement and final body weight were determined. Loin meat between $12^{th}$ and $13^{th}$ rib was used for meat quality analysis after slaughtering. Only $1^{st}$ period showed significantly improved growth performance of treatment (P<0.05) and there were no significant difference in other periods. At $3^{rd}$ periods (overall), a trend of increased average daily gain was found at treatment (P=0.075). Carcass performance and quality did not show significant differences between treatment and control (P>0.05). In meat quality, treatment showed significant increment in all measured meat colors (P<0.05) and significantly less sharing force compared to the control (P<0.05). Although no significant difference in growth performance and carcass yield were found, remarkably improved economic status was detected in treatment group. In conclusion, it could be suggested that application of a formulated feed additive specialized in reduction of heat load in the rumen was able to increase economical balance through enhancing heat stress condition of ruminant and growth.

키워드

참고문헌

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