Abstract

본 연구는 섬유질 배합사료에 맥주박 수준을 달리 첨가하여 번식 흑염소의 사료 및 영양소 섭취량, 영양소 소화율 및 질소 축적율에 미치는 영향을 조사하여 번식 흑염소의 사료로서 맥주박의 사료가치를 평가하고자 실시하였다. 공시축은 번식 흑염소 12두를 4처리구(관행사료구, 맥주박 20, 30 및 40% 첨가구)로 나누어 처리구당 3두씩 대사케이지에 완전임의 배치법으로 배치하여 시험을 실시하였으며 그 결과는 다음과 같다. 맥주박 첨가 수준별 섬유질 배합사료의 일반 조성분은 건물 함량이 <TEX>$61.46{\sim}65.81%$</TEX>, 조단백질 함량은 <TEX>$14.42{\sim}15.59%$</TEX>의 수준이었으며, ADF 와 NDF 함량은 <TEX>$28.32{\sim}28.52$</TEX> 및 <TEX>$53.46{\sim}54.16%$</TEX>로 나타나 맥주박 첨가 비율에 따른 섬유소 함량 의 차이는 없었으나, NFC 함량은 맥주박 첨가 비율이 높을수록 NFC 함량이 낮아졌다. 건물 섭취량은 맥주박을 20% 첨가하였을 때 대조구보다 다소 높은 경향이었다. 조단백질과 가소화 조단백질 섭취량은 맥주박 첨가구가 대조구 보다 높은 경향을 나타내었고, NFC 섭취량과 가소화 NFC 섭취량은 대조구가 맥주박첨가구보다 높은 경향이었고 맥주박첨가수준이 높을수록 낮아지는 경향이었다. 건물, ADF, NDF 및 NFC 소화율은 대조구가 맥주박 첨가구 보다 높았으며 (p<0.05), 조단백질 소화율은 맥주박 첨가구가 대조구보다 높은 경향이었고 질소 축적율은 맥주박첨가구가 대조구보다 다소 높은 경향이었다. This study was conducted to investigate the effects of Total Mixed Ration(TMR) with wet brewer's grain on feed intake, nutrient digestibility and nitrogen retention of breeding Korean native goat. Twelve breeding Korean native goats were divided into four treatment groups, which were fed TMR containing 20, 30, 40% of wet brewer's grain and a control group fed concentrate feed and hay, respectively. Results are summarized as follows. Dry matter contents of TMR with wet brewer's grain was 61.46-65.81%, that of crude protein was 14.42-15.59%, ADF and NDF were 28.32-28.52, 53.46-54.16%, each. These were not different by supplemental level of brewer's grain in TMR. However, NFC contents were lower according to increase wet brewer's grain in TMR. Dry matter intake of TMR supplemented with 20% of brewer's grain was tend to be higher than those of control group. CP and digestible CP intake of TMR diets supplemented wet brewer's grain was intended to higher than those of a control group. NFC and digestible NFC intake were significantly higher in control group than in WBG40 treatment(p<0.05). Digestibilities of DM, ADF, NDF and NFC in control group were higher than those from TMR with wet brewer's grain(p<0.05). Digestibilities of CP of TMR with supplemented wet brewer's grain was tend to be higher than those of a control group. Nitrogen retention of TMR supplemented wet brewer's grain was tend to be somewhat higher compared to the control group

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