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가루, 크럼블 및 펠렛사료 급여가 브로일러육의 이화학적특성에 미치는 영향
조헌조,강신곤,차용호,김병기,우선창,여영수 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.5
본 시험은 대형육계에 있어서 생산체계를 조사하기 위하여 영양수준(2∼3주령, ME 2,843㎉/㎏, 체 19.46%; 4∼6주령, ME 3,072㎉/㎏, 체 17.85%; 7∼8주령, ME 3,109㎉/㎏, 체 17.26%)에 따른 사료가공형태(대조구: 가루→크럼블→펠렛 ; 처리1구 : 가루→크럼블→펠렛 ; 처리2구 : 크럼블→크럼블→펠렛 ; 처리3구 : 펠렛→펠렛→펠렛)로 활성탄(1%)을 혼합첨가하여 8주(56일간)동안 실험한 결과는 다음과 같다. 계육의 일반성분에서 조단백질 함량이 22.22∼23.40%였고, 조지방 함량은 0.30∼0.45% 범위로서 처리구가 낮았으며, 특히 처리2구는 0.28로서 가장 낮았다(P<0.05). 계육의 가열감량은 대조구가 높은 경향이었고, 전단력과 pH는 처리3구가(1.21㎏, 5.85) 낮은 경향이었다. 육색에서 명도(L)는 대조구와 처리2구가 가장 밝았고, 적색도(a)는 0.19∼0.85의 범위였고, 황색도(b)는 처리1구가 가장 낮았다. 관능검사와 조직감, 향미에서 시험구간에서는 유의차는 없었다(P<0.05). 지방산에서의 myristic acid와 arachidoic acid는 처리1구가, oleic acid과 지방의 불포화도가 처리2구가 가장 높았다(P<0.05). 또한 아미노산에서 cystine, glutamic acid, valine, iso-leucine, leucine, lysine, arginine은 처리1구와 처리2구가 다른 처리구보다 높게 나타났다(P<0.05). This study was conducted to investigate the effect of nutrient level (metabolizable energy and crude protein, 2,843㎉/㎏ and 19.46% at 2 to 3 week, 3,072㎉/㎏ and 18.38% at 4 to 6 week, 3,109㎉/㎏ and 17.26% at 7 to 8 week, respectively, and feeding form was ground → crumble → pellet in control, ground → crumble → pellet in treatment 1, crumble → crumble → pellet in treatment 2, pellet → pellet → pellet in treatment 3 for broiler during 8 weeks. Also the effects of supplemented with charcoal(1%) in total mixed treatment feed was investigated. The crude protein, crude fat in broiler meat range from 22.22∼23.40%, and 0.30∼0.45%, respectively. Especially, treatment 2 was lower than other treatment (P<0.05). The heating loss tend to be increased at control. Shear force and pH tend to be decreased at T3(1.21㎏, 5.89). Control and T2 were significantly lighter in color (“L”) than the T1 and the “a” ranged from 0.19∼0.85 and T1 was the lowest “b” among other treatment. The panel test, texture, Aroma were not significantly among the an experimental group (P<0.05). Myristic acid and arachidonic acid of T1 was significantly higher than that other treatment and oleic acid, U/S(unsaturated/ saturated) rate T2 was significantly higher than other experimental group(P<0.05). Among amino acid, cystine, glutamic acid, valine, iso-leucine, leucine, lysine, arginine in T1 and T2 was higher than control and T3.