• 한국축산시설환경학회지
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• 제21권1호
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• pp.1-8
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• 2015

This study was conducted to investigate the dispersion prediction of odor from Hanwoo and dairy farms. Gaussian Plume model used in considering of farm size, wind velocity, atmospheric stability and threshold odor unit to prediction of odor dispersion based on the survey on current state of odor emission and control from 9 site of Hanwoo and 9 site of dairy farms. Farm size, wind velocity and atmospheric stability were affected the distance of odor dispersion, showed longer distance in cases of large farm, low wind velocity and stable atmospheric condition. We will suggestion the adjusted distance of odor dispersion according to farm size was estimated to 50~100 m in Hanwoo farm and 50~150 m in dairy farm when apply the 3OU, 5 m/s wind velocity and stable atmospheric condition.

• Asian-Australasian Journal of Animal Sciences
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• 제8권6호
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• pp.607-610
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• 1995

An experiment was conducted to study the effects of Ascorbic Acid (AA) supplementations in the layer and broiler diets kept in the natural hot humid tropical climate ($20-35^{\circ}C$). The layers and the broilers were fed on normal commercial diet as control while supplementation of 400 and 600 mg/kg Ascorbic Acid made up the experimental diets. The results showed that AA supplementation in the layers significantly reduced egg weight and increased Haugh unit values of the eggs, but produced no significant effects on feed intake, body weight, egg production, respiratory rate and body temperature. The shell thickness was slightly improved, though not significantly, with AA supplementation. AA supplementation in broilers improved body weight gain and FCR and reduced the effect of heat stress as shown by lower body temperature and respiratory rates.

• Asian-Australasian Journal of Animal Sciences
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• 제12권6호
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• pp.846-849
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• 1999

Angus postweaning daily gain (PWDG) were analyzed to investigate heterogeneous variance by sex. A set of data (16,239 records) was divided into six sub-data sets according to level of environment. REML estimation was conducted by a multitrait model, where PWDG in each sex was treated as a separate trait. Estimates showed diversity among environmental levels, where the heritability for heifers was high in good environment but low in poor environment. The bull's estimates varied among environmental levels. The largest heterogeneity of phenotypic variance between sexes was estimated in a data set of the poor environment level. The genetic correlations between the heifer's PWDG and the bull's PWDG were high in the good environment and low in the poor environment (-0.17). The results suggest existence of genotype by sex interaction in the poor environment.

• 한국축산식품학회지
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• 제28권5호
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• pp.610-615
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• 2008

본 연구는 옻나무 추출액의 급여가 산란계 생산성, 계란품질 및 저장기간에 따른 계란 신선도에 미치는 영향을 구명하고자 시험을 실시하였다. 시험은 6처리 4반복 반복당 20수씩 공시하였으며, 옻 추출액 무침가구(C), 500 ppm(T1), 1,000 ppm(T2), 2,000 ppm(T3), 3,000 ppm(T4), 5,000 ppm(T5)으로 처리구를 배치하여 총 12주간 시험을 실시하였다. 총 산란율은 T5 처리구에서 90.2%로 전체 처리간 비교 시 가장 높았으며, 산란량은 5,000 ppm 첨가구에서 59.7로 높게 나타났다(p<0.05). 사료 섭취량에서는 대조구와 비교시 옻나무 추출액 첨 가구에서 유의적으로 감소하는 경향을 나타내었으며(p<0.05), 옻나무 추출액 1,000 ppm 첨가구인 T2 처리구에서 118.5 g/hen으로 가장 낮았고(p<0.05), 사료 요구율에 있어서는 전체 처리구간 비교 시 T5 처리구에서 유의적으로 가장 낮게 나타났다(p<0.05). 시험 기간 동안 난각강도는 T4 처리구와 T3 처리구에서 가장 우수하였으며, 난황색은 전체 처리구간 비교 시 T2 처리구에서 유의적으로 높게 나타났다(p<0.05). Haugh unit은 대조구와 비교 시 옻나무 추출액 5,000 ppm 첨가구인 T5 처리구에서 가장 높았고 저장기간에 따른 Haugh unit 변화 역시 옻나무 추출액 급여에 의하여 향상되는 결과를 보였다. 영양소 소화율에서는 전체 처리구 간 비교 시 옻나무 추출액 첨가구에서 단백질과 회분의 이용률이 향상되는 결과를 보였으며 특히 옻나무 추출액 3,000ppm 및 5,000 ppm 급여구가 유의적으로 향상되었다(p<0.05). 결과적으로 산란계 사료 내 적정 수준의 옻나무 추출액을 첨가 급여는 산란계의 생산성을 증가시키며, 계란 품질에 있어 난각질 및 난황색의 개선과 함께 저장 기간 중 신선도에 있어 안정성을 갖는 것으로 나타났다.

• 한국초지조사료학회지
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• 제42권1호
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• pp.32-40
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• 2022

본 연구는 초지조성방법과 작업항목을 재설정하고 이에 따른 비용 추정을 통하여 적정 초지조성단가를 산출하였다. 초지조성방법은 경운조성(전체벌목)과 불경운조성(전체벌목과 부분벌목)으로 구분하였다. 초지조성방법별 작업항목에 대한 비용은 인허가와 조성작업으로 구분하여 제시하였다. 인허가 비용은 환경영향평가(소규모환경영향평가), 재해영향평가, 측량, 산림조사 및 산지전용협의에서, 조성작업 비용은 벌채, 벌개제근, 파종, 비료, 가축분뇨퇴비, 목초종자, 제초제, 인건비(비료, 종자, 제초제 등 살포) 진압, 목도 및 목책에서 발생한다. 본 연구에서 적정 초지조성단가는 경운조성이 115,894,212원, 불경운조성의 전체벌목과 부분벌목(임간조성)이 각각 110,281,572원과 106,680,122원이었다. 본 연구에서 제시한 초지조성방법, 작업항목 및 이에 따른 초지조성단가 추정은 정부지원사업을 수행하는데 유용하게 사용할 수 있다.

• Journal of Acupuncture Research
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• 제37권2호
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• pp.128-135
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• 2020

Background: Classical acupuncture is being used in the treatment of rheumatoid arthritis (RA). To explore the biological response to acupuncture, a network-based analysis was performed on gene expression data collected from an animal model of RA treated with acupuncture. Methods: Gene expression data were obtained from published microarray studies on blood samples from rats with collagen induced arthritis (CIA) and non-CIA rats, both treated with manual acupuncture. The weighted gene co-expression network analysis was performed to identify gene clusters expressed in association with acupuncture treatment time and RA status. Gene ontology and pathway analyses were applied for functional annotation and network visualization. Results: A cluster of 347 genes were identified that differentially downregulated expression in association with acupuncture treatment over time; specifically in rats with CIA with module-RA correlation at 1 hour after acupuncture (-0.27; p < 0.001) and at 34 days after acupuncture (-0.33; p < 0.001). Functional annotation showed highly significant enrichment of porphyrin-containing compound biosynthetic processes (p < 0.001). The network-based analysis also identified a module of 140 genes differentially expressed between CIA and non-CIA in rats (p < 0.001). This cluster of genes was enriched for antigen processing and presentation of exogenous peptide antigen (p < 0.001). Other functional gene clusters previously reported in earlier studies were also observed. Conclusion: The identified gene expression networks and their hub-genes could help with the understanding of mechanisms involved in the pathogenesis of RA, as well understanding the effects of acupuncture treatment of RA.

• 한국유기농업학회지
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• 제20권1호
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• pp.21-36
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• 2012

In this study, the assessment of livestock manure nitrogen loading for recycling farming in Yeoju-Gun carried out comparing manure units based on the cultivation areas and the N-amount of manure that are generated from livestock manure. Manure units (MU) are used in the permitting, registration, because they allow equal standards for all animals based on manure nutrient production. An MU is calculated by multiplying the number of animals by manure unit factor for the specific type of animal. The manure unit factor for MU determination was determined by dividing amounts of manure N produced 80kg N/year. In this study, manure unit by nitrogen concentration and amount of animal manure was calculated as follows: Hanwoo multiplied by 0.36, dairy cows multiplied by 0.8. swine multiplied by 0.105. The laying hens and broilers multiplied by 0.0079, 0.0049, respectively. The analysis of liquid manure unit per ha shows that the N loading by LMU is quite different by region. When it comes to nitrogen loading, the LMU per ha of cultivated land in excess of the N-amount was the highest in the Bukne-myeon province with 2.76 MU/ha, which is higher than the appropriate level. The Ganam-myeon province came next with 2.53 LMU. To be utilized as a valid program to build the environmentally friendly agricultural system, diverse measures shall be mapped out to properly determine manure units, evaluate N-loading and to properly manage their nutrient balance of each region.

• Asian-Australasian Journal of Animal Sciences
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• 제2권2호
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• pp.129-132
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• 1989

Mutton was the meat of choice among the Saudi Arabian citizens in Riyadh Metropolitan area, 1986-1987, followed by chicken, camel meat, fish and beef. The desirable taste of mutton that represented 68% of the total respondents was the main reason for its preference to other meats. The study also showed that Najdi sheep, which is the predominant local breed, enjoy a priority in its meat consumption among the other indigenous and exogenous breeds of sheep in the central region of the Kingdom. A loyalty to the Najdi sheep was witnessed even when the unit price was assumed to be doubled. Purchasing Najdi sheep for non-family consumption had dropped, although still ranked first among the breeds of sheep readily available in the local markets. The results also showed that, 41% of the sample individuals purchased at least one sheep per family per month, and more consumption of mutton took place during the winter months than during the summer.

• Asian-Australasian Journal of Animal Sciences
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• 제17권5호
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• pp.684-687
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• 2004

A study was conducted to determine the effect of live weight of pheasants on egg production and egg quality characteristics. A total of 48 ring-necked pheasants were divided into control, heavy, middle and light BW groups. Live weights of the control were 1,187 g, 1,352.92 g for heavy group, 1,247.92 g for middle group and 1,003.33 g for light group. Egg production of groups were found as 47.32, 42.82, 45.79 and 46.51% respectively, in 10 weeks of period. There were no statistical differences on egg production among the groups. The effect of live weight on egg weight, shape index, specific gravity, shell weight, shell thickness, Haugh Unit, yolk weight and albumen weight were found statistically significant (p<0.05). The effect of live weight on albumen index, membrane weight and membrane thickness were found not important (p>0.05). On the other hand, other important factors to be effective on the egg quality of pheasants should be investigated. As a result of this study, live weight of pheasant hens is not an important factor to obtain high egg production in pheasants. But, body conformation of breeding materials should be in good conditions.

• 한국축산시설환경학회지
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• 제20권2호
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• pp.41-48
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• 2014

This study was conducted to investigate the dispersion prediction of odor from swine farms in Korea. Gaussian Plume model used in considering of farm size, wind velocity, atmospheric stability and threshold odor unit to prediction of odor dispersion based on the survey on current state of odor emission and control from 48 site of swine farms. Farm size, wind velocity and atmospheric stability were affected the distance of odor dispersion, showed longer distance in cases of large farm, low wind velocity and stable atmospheric condition. We will suggestion the adjusted distance of odor dispersion according to farm size was estimated to 180 m in small farm and 320 m in large farm when apply the 3 OU, 5 m/s wind velocity and stable atmospheric condition.