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육계 사료내 우모 Digest 첨가시 생산성과 계육내 Taurine 함량에 미치는 영향

The Effects of Dietary Supplementation of Feather Meal Digests on the Performances and Taurine Contents in Broiler Chickens

이승민|임희석|백인기|김우연
한국축산학회 (Korean Society of Animal Sciences and Technology)|2004.10|한국축산학회지 (Journal of Animal Science and Technology)|제46권 제5호|pp. 753-762

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키워드

Taurine육계Broiler)우모분우모가수분해물타우린Feather mealFeather meal digest
주제분류축산학

초록

우모분(FM)과 우모분 digests가 육계의 성장률과 계육(가슴살, 다릿살) 및 심장의 taurine 함량에 미치는 영향을 조사하기 위해 갓 부화한 Ross 병아리 100수를 5처리 2반복 반복당 10수씩(암수 5수씩) 배치하여 6주간 사양시험을 실시하였다. 시험사료는 기초사료(control)에 FM 5% 첨가사료(FM), NaOH 처리 FM 5% 첨가사료(NaOH-FM), HNO3 처리 FM 5% 첨가사료(HNO3-FM) 그리고 합성 타우린 0.5% 첨가사료(Taurine)를 시험사료로 공시하여 42일간 실시하였으며 21일령까지는 대조구사료를 모두에게 급여하였고, 처리 사료는 22일령부터 42일령까지 급여하였다. 증체량에 있어 처리구들은 control에 비해 낮았지만 유의차가 없었다. 사료 섭취량은 Taurine과 FM 급여구가 대조구에 비해 낮았고 NaOH-FM과 HNO3-FM구들이 FM구 보다는 높은 경향이 있었다. 사료요구율은 NaOH-FM구가 FM과 HNO3-FM구 보다 유의하게 높았고 대조구와 Taurine구와는 유의한 차이가 없었다. 대조구의 taurine 함량을 보면 심장근육이 1482μg/g으로 가장 높았고 다리근육이 778μg/g이었고 가슴살이 79μg/g으로 낮았다. 다리살과 가슴살의 경우 처리간에 유의차(P<0.01)가 있었으나 심장에서는 유의차가 없었다. 다리살의 경우 control에 비해 처리구들의 taurine 함량이 유의하게 높았는데 Taurine 첨가구에서는 170%, FM구는 123%, NaOH-FM구는 122% 그리고 HNO3-FM구는 63% 높았다. 가슴 근육의 타우린 함량은 Taurine구가 타처리구들에 비해 유의하게 높았고 대조구에 비해서는 246% 높았다. 심장의 경우에는 처리구들간에 차이가 없었다. 결론적으로 육계후기 사료에 우모분을 5% 첨가했을때, 다리근육의 타우린 함량은 효과적으로 강화시킬수 있었으며 우모분을 NaOH나 HNO3로 처리하는 것은 taurine 강화에 도움이 되지 않았다.

Abstract

An experiment was conducted to investigate the effects of dietary supplementation of feather meal(FM) and its digests on the performance of broiler chicks and taurine content in broiler meat. A total of 100 broiler chickens were assigned to five dietary treatments; Control, FM diet(FM), NaOH treated FM diet(NaOHFM), HNO3 treated FM diet(HNO3-FM) and 0.5% synthetic taurine supplemented diet(Taurine). Treated diets were supplemented with FM or FM digests at the level of 5% to the control diet. Treated diets were fed during the last 3wks of 6wks feeding. During the finisher period, weight gain of chicks fed FM treatments tended to decrease in general. Feed intakes of FM and Taurine were significantly lower than the control but were not significantly different from NaOH-FM or HNO3-FM. Feed conversion rate(feed intake/gain) of NaOHFM was significantly higher than those of FM and HNO3-FM but not different from those of the control and Taurine. Taurine content of the control was highest in heart muscle(1482μg/g) followed by leg muscle(778μg/g) and breast muscle(79μg/g). Taurine contents of leg and breast muscle were significantly(P<0.01) affected by treatments but that of heart muscle was not. Taurine content of Taurine treatments was highest in both leg and breast muscle. Taurine content of leg muscle was increased 170% by Taurine supplementation, 123% by FM supplementation, 122% by NaOH-FM supplementation and 63% by HNO3-FM supplementation compared with control. Taurine content of breast muscle of Taurine treatment was 246% higher than the control, but other treatments were not different from the control. In conclusion, supplementation of feather meal at 5% level of broiler diet can enrich taurine content of leg muscle. Chemical treatments of FM were not effective in improving taurine enrichment of broiler meat.

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