• Journal of Animal Science and Technology
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• 제48권3호
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• pp.479-486
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• 2006

본 연구는 사양과 관리 방법이 낙농농가의 우유품질과 생산성에 미치는 효과를 조사하기 위하여 수행하였다. 조사농가는 경기 (11), 강원 (22)과 충남 (17) 지역의 50농가를 선정하여 사육규모, 우사형태, 사양관리, 분뇨처리, 착유와 생산성에 관한 자료를 수집하여 분석하였고 조사농가로부터 우유저장 탱크에서 우유 샘플을 채취하여 우유 성분과 품질을 분석하였다. 착유우의 사육 규모가 큰 농가가 중간 규모나 적은 규모의 농가에 비하여 우사, 착유관리와 분뇨처리를 위한 시설을 잘 갖추고 있었다. 착유우에 대한 농후사료 급여량이 소규모의 낙농가 (47.51%)가 중간 규모의 낙농가 (32.59%)나 규모가 큰 낙농농가 (31.81%)에 비하여 많은 양을 급여하고 있었으며, 착유우의 사육 규모가 커질수록 낙농 농가에서의 농후사료 급여수준이 감소되는 동시에 수입조사료에 대한 의존도는 증가하였다. 우유 중의 세균수는 우사 및 착유실의 형태에 따라서 영향을 받았으며, 계류식 우사에서 착유우를 사육하는 농가의 우유 중 세균수 (Coliform과 E. coli)가 후리스톨이나 톱밥우사에서 사육하는 농가에서 보다 높았다. 바켓식 착유를 하는 농가의 우유 중 세균수가 파이프라인이나 텐덤 (tendem)과 헤링본 착유시설을 보유한 농가에서 보다 높았다. 착유우의 사육두수가 많은 농가일수록 관리와 착유를 위한 시설이 개선되는 경향이 있어 체세포 등급이 높은 것으로 나타났고 체세포 등급이 높은 착유우에서 우유 생산성도 높았다. 그리고 조사된 농가의 평균 우유 중 단백질 농도는 2.89 에서 2.98% 이었고, 우유 중 요소태 질소 함량은 21.81에서 23.31mg/dl 이었다. 이런 결과는 착유 두수가 많은 농가일수록 착유우의 관리를 위한 시설을 개선하고 있어, 유질이 개선되고 농가의 수입도 더불어 증가하고 있는 것으로 조사되었다.

• Asian-Australasian Journal of Animal Sciences
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• 제13권1호
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• pp.53-59
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• 2000

Data from a village household dairy survey was compared with technical parameters of three model farms (0.2, 0.4 and 0.8 ha in extent) established by the Mid-country Livestock Development Centre (MLDC). In terms of land size, about 67% of the 250 dairy farmers interviewed corresponded with the MLDC models, but only 33% of the farmers were keeping dairy cattle under conditions comparable to the MLDC models (no regular off-farm income). In the 0.2 ha category, village farmers kept more cows, and in the other two categories the village farmers kept less cows than their MLDC model counterparts. In all three categories, the milk production per cow was higher in the model farms (1540 to 2137 vs. 1464 to 1508 litres/cow/year), and this could be attributed to higher feeding levels of concentrates in the model farms as compared to the village farmers (430 to 761 vs. 233 to 383 kg/cow/year). The amount of milk produced from fodder was higher in the village situation in comparison to the models. In the mid country, dairy production seems to depend on access to fodder resources rather than on the extent of land owned. Except in the 0.8 ha village category, the highest contribution to the total income was made by the dairy component (44 to 60%). With 0.8 ha village farmers, the income contribution from dairy and crops was similar (41%). Income from other livestock was important for the 0.2 ha MLDC model, but for all other categories their contribution to total income ranged from 0 to 10%. Access to fodder resources outside own-farm land is vital for economic dairy production. As such, an in-depth analysis of feed resources available and their accessibility needs to be further investigated.

• 한국산학기술학회논문지
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• 제21권11호
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• pp.180-186
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• 2020

스마트 축사용 ICT 융복합 확산으로 1세대 낙농 스마트팜 모델에서 여러 제조업체에 의해 만들어진 각 장치들이 독자적인 통신 방식을 사용함으로써 각 장치간의 상호 운영이 제한되었다. 본 연구에서는 기존 ICT 장치의 상호 운용 확보 및 데이터 관리를 위하여 개방형 제어 기술 기반 1세대 낙농 스마트팜 모델의 고도화를 실시하였다. 이 과정에서 도출된 개방형 통합제어는 Open API의 소프트웨어 인터페이스 구조로 각 말단에 위치하는 ICT 장치와 센서들의 통신 방식에 맞추어 실시간 데이터 수집 역할을 맞는 Observer와 상위 통합관리 서버로 연결, 전송하는 역할을 수행하는 Broker로 구성된다. 개방형 통합제어를 통해 고도화 모델 도입에 따른 1세대 낙농 스마트팜 모델 현장 2 곳의 검증을 통하여 성과 분석한 결과 두당 일일평균 산유량이 전년도 대비하여 (A 농가 5.13%, B 농가는 1.33%) 증가하였고(p<0.05), 공태일수는 A농가에서 약 17.5%, B 농가에서 약 13.3% 감소하였다(p<0.05). 젖소는 ICT 장치 도입 이후 적응 기간이 요구되나 이후 지속적인 효과를 관찰할 경우, 생산량의 효과가 점차 증가 할 것으로 기대할 수 있다. 현재 축종별 1세대 스마트팜 고도화를 통해 ICT 장치의 통합관리 체계 구축 및 데이터 송수신 인터페이스에 대한 제시가 실시되었으나, 빅데이터 기반의 2세대 스마트팜 연구개발 진입을 위하여 데이터의 규격 및 송수신에 대한 표준제정 및 산업계의 참여 유도를 위한 정책마련이 시급하다. 또한, 인공지능과 빅데이터가 핵심인 2세대 모델의 데이터 활용안 개발을 통해 낙농 스마트팜의 2·3세대를 향한 기반 조성이 시급 할 것이라고 제언하는 바이다.

• Asian-Australasian Journal of Animal Sciences
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• 제27권4호
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• pp.587-591
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• 2014

Automatic milking systems (AMS) rely upon voluntary cow traffic (the voluntary movement of cattle around a farm) for milk harvesting and feed consumption. Previous research on conventional milking systems has shown differences between dairy cow breeds for intake and milk production, however, the ability to manipulate voluntary cow traffic and milking frequency on AMS farms through breed selection is unknown. This study investigated the effect of breed (Holstein Friesian versus Illawarra) on voluntary cow traffic as determined by gate passes at the Camden AMS research farm dairy facility. Daily data on days in milk, milk yield, gate passes and milking frequency for 158 Holstein Friesian cows and 24 Illawarra cows were collated by month for the 2007 and 2008 years. Illawarra cows had 9% more gate passes/day than Holstein cows over the duration of the study; however, the milking frequency and milk yield of both breeds were similar. Gate passes were greatest for both breeds in early lactation and in the winter (June to August) and summer (December to February) seasons. These findings highlight an opportunity to translate increased voluntary cow movement associated with breed selection into increased milking frequencies, milk production and overall pasture-based AMS performance.

• 한국임상수의학회지
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• 제34권2호
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• pp.112-114
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• 2017

Two one-month-old dairy calves which have Eimeria oocysts in their bloody diarrhea died acutely a few days after showing the first clinical signs. At necropsy, hemorrhagic and congestive gastrointestinal organs were observed in both calves, and abomasal ulcerations existed. As a prevalent agent in all of the collected intra-intestinal specimens, Clostridium perfringens was isolated and the strain was identified as type A possessing alpha and beta2-toxins. In these clinical cases, intercurrent infection by C. perfringens type A and Eimeria through contaminated environment may be responsible for acute hemorrhagic enteritis.

• 한국관개배수논문집
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• 제3권2호
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• pp.36-43
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• 1996

The outflow amount of the contaminants, especially nitrogen and phosphorus was investigated to find out the characteristics of the contaminants discharged from the dairy farm equipped with the livestock waste treatment facility by flood runoff. 1. The con

• 대한수의학회지
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• 제52권1호
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• pp.57-59
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• 2012

In this study, we investigate the status of calcium (Ca) homeostasis at parturition in three dairy farms (I, II, and III), Heilongjiang, China. Twenty multiparous Holstein cows from each farm were randomly assigned to this experiment. The dietary cation-anion difference (DCAD) was 91 mEq/kg of DM for farm I, 152 mEq/kg of DM for farm II, and 85 mEq/kg of DM for farm III. Incidence of hypocalcemia was above 75% and urine pH was above 7.25 at calving in each farm. Compared to other farms, cows in farm II that fed the greatest positive DCAD had the lowest concentration of serum Ca, the highest concentration of serum PTH, and the greatest urine pH at calving (p < 0.05). However, there was not significant difference in serum 1,25-dihydroxy-vitamin D and hydroxyproline concentration of the cows among three farms. This is the first study to confirm that hypocalcemia is very prevalent at calving in Chinese dairy farms, and the high positive DCAD is a major risk factor that results in hypocalcemia at calving, which may reduce ability of the cow to maintain Ca homeostasis.

• 한국동물위생학회지
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• 제23권1호
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• pp.61-69
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• 2000

Thirty-one dairy cow from two farm(more than 500,000 cells/ml of bulk milk) in Kyongbuk northern province were selected because of their high somatic cell(more than 500,000 cells/ml of milk In individual cow). Each cow received. staphylococcus aureus vaccine(Labac Staph) and immunostimulant(Ultracon) by intramuscular injection to be repeated every fifteen days for S times. The present study was investigated variation of somatic cell after administration of Labac Staph and Ultracon, and antibiotics resistance of isolated staphylococcus spp from milk in selected cow. The results obtained through the survey were summarized as follows ; 1. Ten dairy cow was injected in A farm. Chronic mastitic two cow after 2rd injection was weeded out the herd. Decrease rate of somatic cell after 1st, 2nd, ,3rd, 4th and 5th administration were 41.4%, 35.6%, 56.4%, 65.4% and 36.7%, respectively. Twenty-one cow was injected in B farm. Chronic mastitic five cow after ,3rd injection was weeded out the herd. Decrease rate of somatic cell after 1st, 2nd, 3rd, 4th and 5th administration were 36.9%, 59.9%, 24.5%, 62.6% and 78.4%, respectively. 2. In A farm, isolated staphylococcus spp were identified as S hyicus 2 strains(11.8%), coagulase negative staphylococcus 15 stains(89.2%) and S epidermidis 6strain(35.3%). In B farm, isolated staphylococcus spp were identified as S aureus 19 strains(55.98%) and coagulase negative staphylococcus 15 strains (44.2%). 3. In A fm, antibiotics resistant rate of isolated staphylococcus spp was high at ampicillin, penicillin and kanamycin, and middle at neomycin, streptomycin and erythromycin. in B farm, antibiotics resistant rate was moderate at ampicillin, penicillin, gentamicin, ka-namycin, neomycin, streptomycin, erythromycin and tetracycline, and coagulase negative staphylococcus spp was moderate at streptomycin.

• Journal of Dairy Science and Biotechnology
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• 제36권4호
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• pp.196-207
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• 2018

This study was carried out to investigate the rheological properties and composition of unsaturated fatty acid of farm butter made from the milk of cows grazing at high mountain pasture in Pyronogchang SKY ranch (above sea level, 935 m). From two groups containing 7 cows each, a group was fed in-door with TMR (total mixed ration) feed and whereas the other group was grazed pastures for 12 h. The daily intake of feed on basis of dry matter (DMI), milk yields, concentration of milk constituents, and fatty acid profile of pasture milk were compared with control TMR milk. In addition, the physiochemical properties and composition of unsaturated fatty acids of the butter were also compared with those of the butter made from control TMR milk. Upon comparison, the health-promoting index (HPI) of fatty acids; the ratio of omega-6 fatty acids to omega-3 fatty acids (n-6 to n-3 UFA), the atherogenicity index (AI), and the ratio of linoleic acid to ${\alpha}$-linolenic acid (LA to ALA) was apparently improved in farm butter than those of control butter. Thus, it could make the dairy farm visitors to consume the farm butter containing the health-promoting fatty acids from the milk of cows grazing on mountain pasture.

• 한국동물위생학회지
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• 제46권2호
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• pp.147-156
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• 2023

Between February 2020 and September 2021, a total of 452 dairy calves with diarrhea were investigated across 17 dairy farms in Gyeonggi province, Korea, using a rapid diagnostic kit. The study aimed to examine the infection rates of major pathogens causing diarrhea in dairy calves, categorizing them by season, age, and birth month. Additionally, logistic regression analysis was conducted to investigate the factors affecting the infection rate. The infection rates of the major pathogens causing infectious diarrhea in dairy calves, including bovine rotavirus, bovine coronavirus, Cryptosporidium, and E. coli, are influenced by season, age, and birth month. Bovine coronavirus and Cryptosporidium showed variations in infection rates according to season, age, and birth month, while bovine coronavirus was influenced by age and birth month, and E. coli showed variations in infection rates based on age. Furthermore, in the analysis of risk factors influencing the infection rates of these pathogens, age and birth month were identified as risk factors for bovine rotavirus, bovine coronavirus, and Cryptosporidium.