논문 상세보기
pp.20-29
Given the recent increases in feed cost, the demand for rice straw has been increasing on dairy farms because it is cheaper than expensive imported forages. Therefore, it is necessary to study the effect of rice straw feeding on the growth and productivity of dairy heifers. This study compared how feeding tall fescue and rice straw affects the growth, age at first calving, and feed cost of heifers. we compared the growth, age at first calving, and feed cost for each group during the breeding period. Body height was higher in the tall fescue-fed group than in the rice straw-fed group (p<0.05). The length of the growing stage was significantly shorter in the tall fescue group than in the rice straw group (p<0.001) and the age at calving also showed a significant reduction in the tall fescue group compared to the rice straw group (p<0.001). However, the feed cost was lower in the rice straw group because of the difference in the unit price of forage (p<0.001). Based on these results, during the growing period, the rice straw group had delays in growth and the age at first calving compared to the tall fescue group, but also had reduced feed costs in the short term.
Ⅱ. 재료 및 방법
1. 농가 선정 및 분석기간
2. 기초자료 수집
3. 분석모형
Ⅲ. 결과 및 고찰
1. 육성기 월령별 체고
2. 초산 분만 월령
3. 육성기 사료비 계산
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES
