수입건초의 품질 및 기호성에 관한 연구 = Studies on the Quality and Palatability of Imported Hayand Straw

국문 초록 (Abstract)

본 연구는 2008년 1월부터 12월까지 충남대학교 농업생명과학대학과 가축유전자원시험장에서 수행하였다. 공시가축은 유산양 (Sannen, Capra aegagrus) 12두 (♀, 30 ± 1.8 ㎏), 재래산양 (Korean native goats, Capra hircus) 12두 (♀, 24 ± 2.4㎏), 꽃사슴 (sika deer, Servus nippon) 5두(♀, 92 ± 5.2 ㎏)를 공시하였다. 공시재료는 2006년에 미국에서 수입된 annual ryegrass straw, perennial ryegrass straw, tall fescue straw 및 Kentucky bluegrass straw 등 4종과, 2007년에 미국에서 수입된 alfalfa hay, bermudagrass hay, timothy hay, klein grass hay, oat hay 및 orchardgrass hay 등 6종 등 총 10종과 대조구로 국내산 혼합 목건초 (mixed hay) 등 총 11종을 공시하였으며 얻어진 결과는 다음과 같다. 수입건초는 종류에 따라 화학적 성분과 건물소화율 (in vitro digestibility, IVDMD)는 현저한 차이를 보였으며 (p＜0.05), alfalfa hay와 orchardgrass hay를 제외하고는 대부분의 수입건초는 대조구에 비하여 조단백질 (crude protein, CP) 함량과 IVDMD가 낮은 반면에, NDF와 ADF 같은 섬유소물질의 함량은 상당히 높은 결과를 나타내었다. RFV (relative feed value)는 수입건초의 종류에 따라 차이를 보였으며, 대부분의 수입건초의 RFV는 4~5등급에 해당되었다. 유산양, 재래산양 및 꽃사슴에 의한 채식량과 기호성은 수입건초의 종류에 따라 현저한 차이를 나타내었으며, 공통적으로 orchardgrass hay와 bermudagrass hay가 높았던 반면에, Kentucky bluegrass straw, tall fescue straw, annual ryegrass straw 및 perennial ryegrass straw 등은 채식량과 기호성 순위가 상당히 낮은 것으로 밝혀졌다. 이상의 결과로 보아, 공시된 수입건초는 종류에 따라 품질과 기호성이 현저한 차이를 보이고 있어 수입건초의 품질평가에 대한 기준설정이 중요하다고 하겠다.

다국어 초록 (Multilingual Abstract)

The experiment was carried out from January through December in 2008 at Chungnam National University and the Unbong Animal Genetic Resources Station, NIAS. The experimental animals were twelve dairy goats (♀, 30 ± 1.8 ㎏), twelve Korean native goats (♀, 24 ± 2.4 ㎏) and five sika deer (♀, 92 ± 5.2 ㎏). A total of 11 different types of hay and straw were tested in this study: such straw imported from USA in 2006 as annual ryegrass, perennial ryegrass, tall fescue and Kentucky bluegrass, and such hay imported from USA in 2007 as alfalfa, bermudagrass, timothy, kleingrass, oat and orchardgrass, and such domestic hay as mixed hay. There were significant differences in chemical composition and in vitro dry matter digestibility (IVDMD) among the various types of imported hay and straw (p＜0.05). Besides alfalfa hay and orchardgrass hay all of the imported hay contained lower crude protein (CP) and IVDMD but contained higher neutral detergent fiber(NDF) and acid detergent fiber (ADF) than the domestic hay. According to the kinds of the imported hay, relative feed value (RFV) made the difference and the hay grades were ranged from 4 to 5, based on the RFV. According to the kinds of the imported hay, there were markedly differences in dry matter (DM) intake and palatability ranking among dairy goats, Korean native goats, and sika deer. DM intake and palatability ranking were high in common between orchardgrass hay and bermudagrass hay, but Kentucky bluegrass straw, tall fescue straw, perennial ryegrass straw and annual ryegrass straw were proved to be very low in DM intake and palatability ranking. In conclusion, the quality and palatability among the imported hay that was tested in the study were quite variable and lower than expected. It is required to establish a better feed evaluation system for the imported hay.

목차 (Table of Contents)

• ABSTRACT
• Ⅰ. 서론
• Ⅱ. 재료 및 방법
• Ⅲ. 결과 및 고찰
• Ⅳ. 요약
• Ⅴ. 인용문헌

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