http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
제주도 중산간목장지대에서 토양 - 목초 - 가축 간 무기영양소의 상호관계 2 . 방목기 토양 , 목초 , 우유내 무기물함량의 상호관계
김문철(M . C . Kim),김규일(K . I . Kim),이현종(H . J . lee),양기천(K . C . Yang) 한국축산학회 1990 한국축산학회지 Vol.32 No.3
Mineral contents(P, K, Ca, Mg, Na) were determined for soil, forages and milk sampled in June, August and October at 10 different dairy farms in Cheju, and interrelationships between the mineral contents in soil, forages and milk were examined. The results are as following; 1. Of the minerals P and K contents in soil were higher(p $lt;0.01) in very-dark-brown soil than in black soil. Meanwhile, Ca and Mg contents were opposite. 2. Mineral contents in orchardgrass and ladino clover were not different between the two soil types. P contents in the two pasture species decreased and Ca contents(except for orchardgrass in June) increased with time. 3. Mineral contents in milk were not different between the soil types or the seasons. 4. K content in soil was correlated with that in orchardgrass in June, August and October, and that in ladino clover in August and October, respectively. 5. K content in milk was correlated with that in orchardgrass in June and October(p $lt;0.05), respectively, and Ca content in milk with that in ladino clover in June(p $lt;0.05).
김문철,김규일,양영훈,김충남,김훈,Kim M.C.,Kim K.I.,Yang Y.H.,Kim C.N.,Kim H. 한국축산환경학회 2006 축산시설환경학회지 Vol.12 No.2
우리나라의 비육돈 성장단계별 돈사의 소요면적이 제주환경에서 적합성 여부를 검토하기 위해 시험이 성장 3단계별로 수행되었고 우리나라에서 추천된 육성돈 돈사의 바닥소요면적 $0.56m^2$을 중간 수준으로 하며 저 및 고밀도 3수준 4반복 난괴법으로 처리하여 일일증체량 및 육질 등을 조사 분석하였다. 성장단계 1(체중 $43{\sim}65kg$ 범위)에서 중 밀도 구(돈사바닥 소요 면적, $0.56m^2/pig$)의 일일증체량은 저나 고 밀도 구 보다 유의적 증가를 보였다(P<0.05). 그러나 성장단계 2(체중$65{\sim}91kg$ 범위)와 3(체중 $91{\sim}105kg$ 범위)에서는 일일 증체량이 처리간 뚜렷한 차이를 보이지 않았다. 마지막 도살시 도체중이나 등 지방 두께는 저밀도구가 중이나 고밀도구 보다 높았다. 최종 육질 등급도 저밀도구에서 높은 추세였다. 결론적으로 볼 때 육성초기(체중 $43{\sim}65kg$ 범위)에는 중간 사육밀도가 다른 두 처리 보다 높은 일당증체량을 보였으나 그 이후는 처리간 사육밀도 차이를 얻지 못 했다. Studies were carried out using growing to finishing pigs to investigate adequate floor space ($m^2/pig$) in Jeju environment. A randomized block design was used to compare the effect of pig performance on 3 stocking rates (low $0.56 m^2/pig$, medium 0.70 and high 0.90). Liveweight gain and feed intake were measured over a 4 week(Growth stage 1 and Growth stage 2) period or a 3 week(Growth stage 3) period. In growth stage 1 (43 to 65 kg body weight ; BW), daily weight gain was significantly higher in the medium stocking rate than in low or high (P<0.05). However, no significant difference in daily weight gain was found among treatments in growth stage 2(65 to 91 kg) or 3 (91 to 105 kg). Dressing percentage, back fat thickness and carcass grade were also not different (P>0.05). In conclusion, daily weight gain of pigs reared in medium density appeared to be higher than in the other groups during the early growing period which is $0.70m^2/pig$ and similar to that recommended by National Livestock Research Institute, RDA.