최근에 청보리 사일리지는 국내에서 가장 많이 이용하는 조사료이지만 유기축산을 위한 유기조사료의 생산과 품질에 관한 연구는 미흡한 실정이다. 따라서 본 시험은 유기 청보리 사일리지의 적정 수확시기를 구명하고, 사일리지 품질 향상을 위하얘 예건과 싸라기를 첨가하여 사일리지를 펑가하였다. 시험구 배치는 12처리 3반복의 분할구 배치법으로 주구는 수확시기로 출수기, 유숙기 및 황숙기를 두였으며， 세구는 무처리, 예건, 싸라기 10%, 싸라기 15%를 두었다. 수확시 건물함량은 출수기, 유숙기 및 황숙기가 각각 12.8%, 21.9% 및 29.8%로 증가하였다. 청보리의 건물수량은 출수기, 유숙기 및 황숙기가 각각 10,346, 15,819 빚 18,336 kg/ha였으며, TDN 수량은 6,288, 9,550 및 10,178 kg/ha였다. 유기 사일리지의 pH는 출수기, 유숙기 및 황숙기가 각각 4.70, 4.03 및 5.37로 유숙기가 가장 낮았다. 청보리의 수확시기가 늦어 짐에 따라 조단백질, 조지방, NFC 빚 TDN 함량은 감소하였으나, NDF 및 ADF 함량은 증가 하였다. 그러나 조회분 함량은 유숙기가 가장 낮았다. 사일리지의 예건과 싸라기의 첨가는 조회분， NDF 및 ADF 함량을 감소시키고, NFC와 TDN 함량은 증가사켰다. 사일리지의 건물 소화율은 수확시기가 늦어짐에 따라 감소하였으며, 예건과 싸라기 첨가에 의하여 건물소화율이 증가하였다. 유숙기가 다른 수확시기보다 젖산과 총유기산 함량은 높고 낙산 함량이 낮아 총유기산 중 젖산함량이 가장 높았다. 예건과 싸라기 첨가에 의한 젖산 함량 증가 효과는 출수기가 다른 수확기보다 효과가 있었다. 이상의 결과를 종합해 볼 때 유기 청보리 사알리지 제조를 위한 수확적기는 유숙기 이었으며, 예건과 싸라기 첨가에 의하여 청보리 사일리지의 품질을 향상시킬 수 있었다.

The main nutritional problem of sorghum×sudangrass (sudangrass) silage is low quality and dry matter (DM) contents. This experiment was conducted to evaluate whether agricultural byproducts addition of sorghum×sudangrass silage increases DM content and forage quality of the silage. Sorghum×sudangrass silage with added byproducts had low pH values, however sorghum×sudangrass silage (control) had a high pH value because of its high moisture content. Silage added with byproduct had lower acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents than control silages, while its non-fiber carbohydrate (NFC), and total digestible nutrients (TDN) and lactic acid contents showed the opposite results. Silages added with crushed rice and green grain of rice were higher in lactic acid content than othor treatments as well as high DM, NFC, and TDN contents. Silage added with crushed rice and green grain of rice can be recommended as the most effective treatment for increasing forage quality and DM content of sorghum×sudangrass silage.

Although winter rye is now widely grown as a silage crop in Korea, but silage quality of the winter rye produced from farmer's fields have not been published. Therefore, this experiment was conducted to evaluate forage quality of winter rye which was participated in Forage Quality Contest in 2008. These data were classified by resign, forage production, added inoculants, planting date, and harvest date. Difference on lactic acid of rye silage was detected in forage production (p＜0.01), however, there were no significant differences among the rye silage tested. The moisture and lactic acid were significant differences in dry matter yield of rye silage. There is all the difference between silage added inoculants and control. The pH, ash, CP, NDF and ADF of rye added with inoculants were higher t㏊n those of control silage, however, the TDN and lactic acid were increased in silage added with inoculants. The ash and CP were significant differences in planting date, but lactic acid was significant differences in harvest date. This experiment indicates t㏊t lactic acid of silage was good indicator for evaluation of rye silage. Differences in forage quality were also observed among winter rye silage. Therefore, nutritional quality as well as lactic acid is important in silage quality contest of winter rye silage.

Although whole crop barley are now widely grown as a silage crop in Korea, but silage quality of the whole crop barley produced from farmer's fields have not been published. Therefore, this experiment was conducted to evaluate forage quality of whole crop barley which was participated in Korean quality contest in 2008. These data were classified by region, forage production, added inoculants, planting date and harvest date. Difference on lactic acid of barley silage was detected in the region (p＜0.05), however, there no significant differences in other chemical composition. The moisture and lactic acid were significant differences in dry matter yield of barley silage. There is all the difference between silage added inoculants and control. Differences between planting dates in ash and crude protein (CP) were detected in barley silage (p＜0.05). From comparison within harvest date, lactic acid ㏊d significant differences among barley silage. Differences in forage quality were observed among whole crop barley for silage. Therefore, nutritional quality as well as lactic acid is important in silage quality contest of whole crop barley.