• 한국동물위생학회지
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• 제13권2호
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• pp.141-147
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• 1990

The present study was carried out to investigate the agent of foot disease of cattles, to develop the therapeutics. The results obtained were as follows ; 1. Sixty eight heads of cattle affected foot rot during the observation period and the incidence rate shown 3.25%. 2. The high incidence was observed on September and October. 3. The disease was more frequently seen affecting in hindlimbs than forelimbs. 4. The disease was more frequently seen affecting in older cattles and higher milk production cow. 5. Isolated strains wert shown E. coli (20.6%), Staphylococcus SPP (17.6%), stridium SPP (22.1%), Fusobacterium SPP (20.6%), Bacteroid SPP (19.1%). 6. The most susceptible therapeutics are A, B preparation.

• 대한수의학회지
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• 제7권2호
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• pp.51-55
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• 1967

The mammary excretion of suphamethomidine after intravenous and/or oral administration was investigated in cow. The results show that sulphamethomidine is bound to plasma proteins to a great extent (80~90%). Ay a dosage of 60 mg./kg. maximal concenration in plasma of this sulphonamide was reached 7-10 hours after oral dosing. The sulphonamide concentration in plasma slowly declined after both oral and intravenous administration (fig. 1, 2, and 3) The concentration of sulphonamide in milk was very low and the excretion was completed in 7 days after a single oral dose and 5 days after intravenous injection while in the case of blood plasma it was 11 and 7 days, respectively. In addition, the renal excretion of sulphamethomidine was investigated while under continuous intravenous intravenous infusion. The excretion ratios varies according to self depression (table. 1). Blockade of the tubular secretion with diodone lowered the excretion of sulphamethomidine. It is concluded that the renal excretion of sulphamethomidine in cows occurs by filtration by slight tubular secretion and also by a high rate of back diffusion.

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 1996년도 정기총회 및 학술발표회
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• pp.43-43
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• 1996

Bovine angiogenin (bAng) is a potent blood vessel inducing protein purified from cow milk. Fluorescence spectroscopy has been used to study the interaction of bAng with actin in 50 mM Tris-HCl, pH 7.5, and 1 mM CaCl$_2$ at 25$^{\circ}C$. Actin contains four tryptophans but bAng contains no tryptophans. A 50% decrease in intrinsic fluorescence accompanied formation of the bAng/actin complex. (omitted)

• 응용통계연구
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• 제11권2호
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• pp.233-246
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• 1998

1995년 가축통계 총조사자료에 기초하여 1998년부터의 향후 5년간의 표본설계를 하였다. 먼저 본 설계에서는 시도별 변이계수가 목표인 점을 고려하여 농가별 사육마리수를 전체사육마리수로 나눈 사육비율을 구한 다음 이를 전수기준과 총화에 이용하였다. 전수농가기준은 전수농가를 제외 한 후 조사구의 축종별 사육비율의 분산이 일정하게 하는 기준을 정하였고, 층화는 네축종중 최 대사육비율이 비슷한 조사구를 complete linkage 방법에 의해 층화하였다. 충의 개수는 층화에 따른 표본개수를 최소화하는 충의 수를 선정하였다. 또한 표본설계과정상의 해결하기 힘들었던 문제점을 열거하였다.

• 대한수의사회지
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• 제23권8호
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• pp.537-543
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• 1987

In order to compare the diagnosis values the Rolling Ball Viscometer(RBV) and the California Mastitis Test(CMT) for detection of bovine subclinical mastitis, A total of 2204 quarter milk samples from 565 heads of Holstein in Gyeongnam area were examined d

• Archives of Pharmacal Research
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• 제26권8호
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• pp.638-643
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• 2003

Raw milk samples, and cow and chicken intestines were tested to isolate vancomycin-resistant, gram-positive bacteria. From these samples, we isolated seven vancomycin-resistant Streptococcus equinus, two vancomycin-resistant viridans Streptococcus and two vancomycin-resistant Enterococcus faecium. The MICs of several antibiotics, including vancomycin, against these strains were tested. Seven isolates of S. equinus showed high level resistance to vancomycin and teicoplanin (＞100 $\mu$ g/mL). The cell wall thickness of these strains was compared with that of the sensitive strain by TEM and no differences were obserbed between these strains. We compared the strains of vancomycin-resistant Streptococcus equinus using PCR with Microbial Uniprimer Kit. We concluded that it is necessary to combine other methods in order to cluster and identify all isolates of S. equinus.

• 농업과학연구
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• 제21권1호
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• pp.45-53
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• 1994

본(本) 연구(硏究)는 1990년부터 1991년까지 국립종축원에서 사육한 Holstein종 159두에서 조사된 성적을 근거로 최소자승법을 이용하여 종모우(種牡牛), 분만계절(分娩季節)및 산차(産差)가 비유량(泌乳量)인 유량(乳量) 및 유지방량과 유조성분(乳組成分)인 유지율(乳脂率), 유단백질율(乳蛋白質率), 무지고형분율(無脂固型紛率)및 총고형분율(總固型紛率)에 미치는 효과(效果)를 추정하였던바 그 결과(結果)를 요약하면 다음과 같다. 1. 비유량(泌乳量)에 있어서 유량(乳量)및 유지량(乳脂量)은 각각 $7,26.56{\pm}3,57.24$ 및 $230.95{\pm}43.56Kg$ 이었고, 유조성분(乳組成分)에 있어서는 유지율(乳脂率), 유단백질율(乳蛋白質率), 무지고형분율(無脂固型紛率) 및 총고형분율(總固型紛率)에 있어서 각각 $3.69{\pm}0.43$, $3.32{\pm}0.41$, $9.15{\pm}0.49$및 $12.75{\pm}0.96%$ 이었고, 변이계수는 유량, 유지량, 유지율 및 유단백질율에서 각각 18.68, 17.64, 11.88 및 12.34%이었다. 2. 종모우(種牡牛)의 효과(效果)에 있어서는 유량(乳量)과 유지량(乳脂量)및 유지율(乳脂率)에서 고도의 유의차 (P<0.01)가 인정되었으며, 유단백질율(乳蛋白質率) 및 총고형분율(總固型粉率)에서도 유의차 (P<0.05)가 인정되었다. 모우별(牡牛別)로는 유량(乳量)에서 B, L, 및 O 종모우(種牡牛)가 각각 7,571.22, 7,499.11 및 7,420.58Kg으로 가장 우수하였고, 유단백질율에서는 A, F 및 K 종모우가 각각 3.75, 3.64 및 3.65%로 다른 종모우에 비하여 높았다. 3. 산차(産差)의 효과(效果)에 있어서 유량(乳量)에서 고도의 유의차 (P<0.01)가 인정되었으며, 유지방량 및 유지율(乳脂率)에서는 유의차(P<0.05)가 인정되었고, 산차별(産差別)로는 유량(乳量)과 유지방량에서 3산차(産差)가 각각 7,634.54 및 274.98Kg로 가장 우수하였고, 유지율 및 유단백질율에서는 4산차 이상이 각각 3.90, 3.50%로 다른산차에 비하여 높았다. 4. 분만계절(分娩季節)의 효과(效果)에 있어서는 유량(乳量)에서 고도의 유의차 (P<0.01)가 인정되었으며 유지량(乳脂量), 유지율(乳脂率), 유단백질율(乳蛋白質率), 및 총고형분율(總固型紛率)에서 유의차(P<0.05)가 인정되었으며, 분만계절별(分娩季節別)로는 유량(乳量)에 있어서 봄과 겨울이 각각 7,310.31 및 7,364.57Kg로 우수하였고, 유단백질율에 있어서는 봄과 가을이 각각 3.68 및 3.52%로 우수하였다.

• 대한미생물학회지
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• 제6권1호
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• pp.21-27
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• 1971

Recent reports confirm that R factors is widespread in Korea among Enterobacteriaceae isolated from humans. However, no reports have been made concerning the incidence of transferable drug resistance in domestic animals in this country. A total of 211 isolates of Escherichia coli, including 94 strains from dogs, 76 strains from pigs, 30 strains from chickens, and 21 strains from cow milk, were examined for drug resistance and distribution of R factors. And, respective two strains of Salmonella E group and Salmonella cholerasuis which were isolated from dogs and pigs, respectively were also examined for the same purposes. Of 211 strains of E. coli isolated, 66.8% were found to be resistant to 8 antibacterial agents such as streptomycin(SM), tetracycline(TC), chloramphenicol(CP), ampicillin sodium(AP), nalidixic acid(NA), gentamicin(GM), and polymyxin B(PX). Among the isolates, 86.2% of the strains from dogs, 70% of the strains from chickens, 43.4% of the strains from pigs, and 28.6% of the strains from milk, respectively, were found to be resistant to the drugs. The following percentage of resistance of E. coli to each individual drugs was encountered: of 94 strains from dogs, AP, 64.9%; SM, 20.2%; NA, 12.8%, CP and PX, 8.5% each; GM, 2.1% each; GM, 2.1%. Among 76 strains from pigs, 42.2% and 2.6% each were resistant to TC, AP and PX, respectively. Among 30 strains from chickens, 43.3% were resistant to SM, TC, AP, respectively, and no strains were resistant to the other drugs. No strains of the isolated from milk were resistant to the drugs, except that 28.6% were resistant to SM and AP, respectively. Of the strains from dogs, multiply resistant strains(56.8%) were more than singly resistant one(43.2%) and sixteen different drug resistant patterns were observed. The most frequently encountered patterns were AP TC AP and SM CP AP NA. Of the isolates from other sources, the most frequently encountered resistant patterns were as follows: TC among the strains from pigs; SM TC AP from chickens; SM AP from milk. Of the resistant strains from dogs, 32% carried R factors and the most common resistance patterns of R factors were AP TC AP and SM TC CP, whereas 35.2% of the resistant strains from pigs carried R factors of which the most common encountered pattern was TC. Of the resistant strains from chickens, 46.9% carried R factors of which the most common patterns were SM TC TC AP and AP, whereas 50% of the resistant strains from milk carried R factors of which the most common pattern was SM. Of 4 strains of Salmonella isolated, no strains were resistant to the drugs, except that only one strain of Salmonella E group isolated from a dog was resistant to AP. The strain did not harbor R factor.

• Journal of Nutrition and Health
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• 제31권1호
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• pp.96-101
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• 1998

The prevalence of iron deficiency in later infancy and the toddler years(25% to 40% at 1 year of age) has not decreased remarkably , except in Western countries. The purpose of this study was to 1) determine the relationship between current feeding practices and iron status, and 2) assess compliance to infant feeding instructions. Two groupsof infants were examined. The first group of 302 infants aged 6 to 24months was seen at a well baby clinic while the second group of 135 infants of the same age group was assessed by venipuncture. Cutoff values for laboratory tests were as follows ; hemoglobin<11g/dL, mean corpuscular volume (MCV) <72fl ; red cell distribution width(RDW)>15% ; serum ferritin level<10ng/ml ; and transferrin saturation (serum iron(TIBC)<10%. The diagnosis of iron deficiency anemia (IDA) was made when a low hemoglobin level was associated with either low ferritin orlow transferrin saturation . Of the 302 children brought to the well baby clinic , 12.3%(n=37) were found to have anemia (hemoglobin<11.0/dL). In terms of children grouped according to feeding practices, it was found that children with anemial comprised 32.0% (24/75) of the prolonged breast-fed group (Group A), significantly more than the 4.0%(7/176) of the artificial milk feeding group(Group B). and 3.9%(2/51) of the switched from breast milk to iron -fortified weaning foods group(Group C).Among the 107 children with IDA , iron deficiency in 105 children(98.1%) was suggested by their dietary histories ; exclusive or prolonged breast-feeding for more than 6 months without iron fortification in 98 infants ; cow's milk consumption> 500ml/day without iron fortification during infancy(n=12), or >800ml without iron-fortified foods after infancy(n=15) ; and the use of unfortified forumula or unbalanced diets, mainly limited to rice gruel. Despite the relatively high (79.6%) motivation on the part of the infants mothers and supervison by professional personnel, the poor results in the infants receiving iron fortified foods were due to poor compliance(85.75). Among the mothers of 98 IDA patients who were contacted by telephone , it was revealed that 29% did not give the oral iron preparation for more than 2 months. Furthermore, negligence or disregard by the parents occurred in 14% of the case , discontinuance of the oral iron preparation by the parents due to side effects occurred in 6%, and the children's refusal or poor oral intake and no further trial occurred in 6%. The dietary history of a large group of infants was highly predictive of their risk for anemia . Continued consumption of breast milk until the age of 1 year is not warranted unless iron-fortified foods are given concomitantly. Because there is a problem with compliance, more successful and safe strategies for preventing iron deficiency woold included dual coverage in the from of therapeutic iron supplementation as well use of iron-fortified foods for teddlers who are at risk of iron deficiency.

• 농업과학연구
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• 제14권2호
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• pp.295-300
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• 1987

우리나라의 각(各) 지역별(地域別), 시기별(時期別) 원유(原乳)의 화학적(化學的) 조성(組成) 및 미생물학적(微生物學的) 성상(性狀)을 확인하고자 강원(江原) 경기(京畿), 서울, 충북(忠北), 충남(忠南), 전북(全北), 전남(全南), 경북(慶北), 경남(慶南) 각(各) 지역(地域)의 우유처리장(牛乳處理場)에서 원유(原乳)를 수집(蒐集)하여 시험(試驗)한 결과(結果)는 다음과 같다. 1. 우리나라 각(各) 지역(地域)에서 생산(生産)되고 있는 원유(原乳)의 평균조성(平均組成)은 춘계(春季)에는 수분(水分)이 88.00%, 단백질(蛋白質) 3.49%, 지방(脂肪) 3.43%, 유당(乳糖) 4.37%, 회분(灰分) 0.75%였으며 하계(夏季)에는 수분(水分)이 88.30%, 단백질(蛋白質) 3.28%, 지방(脂肪) 3.32%, 유당(乳糖) 4.26%, 회분(灰分)이 0.70%이었다. 2. 원유(原乳)의 미생물학적(微生物學的) 성상(性狀)은 춘계(春季)에는 $m{\ell}$당(當) 생균수(生菌數)가 $3.7{\times}10^6$, 대장균수(大腸菌數) $2.2{\times}10^5$, 내열성균수(耐熱性菌數) $1.4{\times}10^5$, 호열성균수(好熱性菌數) $3.3{\times}10^3$, 호냉성균수(好冷性菌數) $8.2{\times}10^5$, 곰팡이 및 효모수(酵母數)는 $1.9{\times}10^4$이었으며 하계(夏季)에는 $m{\ell}$당(當) 생균수(生菌數)가 $3.7{\times}10^6$, 대장균수(大腸菌數) $2.3{\times}10^5$, 내열성균수(耐熱性菌數) $2.3{\times}10^3$, 호열성균수(好熱性菌數) $7.5{\times}10$, 호냉성균수(好冷性菌數) $5.0{\times}10^5$, 곰팡이 및 효모수는 $1.3{\times}10^4$이었다.