• 한국축산식품학회지
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• 제39권1호
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• pp.35-44
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• 2019

The composition of turmeric powder (TP) can affect the quality properties and storage characteristics of pyeonyuk; however, the appropriate addition level of TP in pyeonyuk has not been established. To address this, an experiment was designed with one control and three TP treatments: control (TP 0%), T1: (TP 0.1%), T2: (TP 0.3%), and T3: (TP 0.5%). All the TP treatments markedly increased protein and ash contents compared to the control. The water holding capacity was equally retained with the control and T3 treatments, but was significantly lower with the T1 and T2 treatments in pyeonyuk (p<0.05). Lightness and redness values were both reduced with the addition of TP, whereas the yellowness value increased. Values for 2-thiobarbituric acid reactive substances and the total microbial count for pyeonyuk with added TP showed an improvement over time. As a result, the addition of TP did not have a significant negative influence on the quality characteristics of the pyeonyuk with addition of 0.5% TP being particularly effective for water retention capacity and inhibition of lipid oxidation.

• 한국축산식품학회지
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• 제44권2호
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• pp.255-268
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• 2024

Probiotic products have long been recognized for their health benefits. Additionally, milk has held a longstanding reputation as a dairy product that offers high-quality proteins and essential micronutrients. As awareness of the impact of food on health grows, interest in functional products such as probiotic dairy products is on the rise. Fermentation, a time-honored technique used to enhance nutritional value and food preservation, has been used for centuries to increase nutritional value and is one of the oldest food processing methods. Historically, fermented dairy products have been used as convenient vehicle for the consumption of probiotics. However, addressing the potential drawbacks of fermentation has recently led to increase in research on probiotic dairy drinks prepared without fermentation. These non-fermented dairy drinks have the advantage of maintaining the original flavors of milk drinks, containing potential health functional probiotics, and being an alternative dairy product that is helpful for probiotics intake. Currently, research on plant-based dairy products is rapidly increasing in the market. These developments might suggest the potential for novel forms of non-fermented dairy beverages with substantial prospects in the food market. This review aims to provide an overview of milk-based dairy beverages, both fermented and non-fermented, and discuss the potential of non-fermented dairy products. This exploration paves the way for innovative approaches to deliver probiotics and nutrition to consumers.

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.79-84
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• 2009

최근 센서 네트워크를 이용하여 특정 환경에서 동물의 행위나 반응 등을 모니터링하고, RFID 기술을 이용하여 동물 이력을 추적하거나 동물을 식별하는 연구가 진행되고 있다. 그리고 GPS 기술을 동물에 적용하여 애완견 도난 방지이나 관리 등에 대해 연구하고 있다. 그러나 아직 GPS, RFID, 센서 네트워크를 이용하여 동물원에서 일반 사용자나 관리자를 대상으로 지능적인 서비스를 제공하는 연구는 미흡하다. 따라서 본 논문에서 GPS, RFID, 센서를 동물원에 적용하여 동물 상태를 추적하는 지능적인 서비스를 제안한다. 이를 위해 먼저 동물 상태 추적 서비스 시나리오를 제시하고, 이 서비스를 제공하기 위한 시스템 구성을 작성한다. 제시된 동물 상태 추적 서비스는 GPS, RFID, 센서를 이용하여 동물의 현재 위치, 체온, 사진 등의 상태 정보를 실시간으로 제공하고, 또한 동물이 우리를 이탈할 경우 위치와 상태를 알고 추적할 수 있다. 더불어 제시한 서비스 시나리오에 따른 동물 상태 추적 시스템의 프로토타입을 구현하고 실험하여 동작됨을 확인한다.

• 농업과학연구
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• 제43권1호
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• pp.14-20
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• 2016

One of the most powerful health management practices is the use of antibiotics, but their use is being restricted because of health safety issues. The swine industry has been looking for various alternatives to antibiotics and increasingly considers the use of dietary factors like feed ingredients, feed additives, feed formulation practices, or feeding methods, instead of using antibiotics to improve pig health and performance. Among other alternatives to antibiotics, spray-dried plasma may be a candidate. Spray-dried plasma is a blood product that provides bioavailable nutrients and physiologically active components such as immunoglobulins, glycoproteins, growth factors, peptides, etc. It is an excellent protein source with balanced and highly digestible amino acids. Several beneficial physiological activities depend on components of spray-dried plasma, such as immune competence (antibacterial activity), modulation of microbiota and/or immune system, integrity of intestinal barrier function, etc. These beneficial effects can contribute to improvement of pig performance and health by modulation of microbiota in the digestive tract and/or immune system. Therefore, it is suggested that spray-dried plasma has great potential as an antibiotics alternative.

• 농업과학연구
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• 제43권1호
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• pp.52-60
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• 2016

In animal reproduction, the quality of oocytes and embryos has been evaluated by the expression of specific molecules. Follistatin (FST), which was isolated from follicular fluid, binds and bio-neutralizes the TGF-${\beta}$ superfamily members. Previous studies using the bovine model showed FST could be an important molecular determinant of embryo developmental competence. However, the effect of FST treatment on porcine embryo developmental competence has not been established. In this study, the effect of exogenous FST on porcine embryo developmental competence was investigated during in vitro culture. FST (10 ng/ml) treatment induced a significant decrease in the rate of cell arrest at the 4-cell stage. The expression levels of DNA-methyltransferase 1 (DNMT1), histone deacetylase 1 (HDAC1), and histone deacetylase 2 (HDAC2) were decreased in 4-cell stage embryos. FST treatment also resulted in significant improvements in developmental competence of embryos in terms of blastocyst formation rate and OCT-4 mRNA levels, the latter being related to pluripotency. In conclusion, during in vitro culture, FST treatment significantly ameliorated 4-cell block during embryonic development and improved embryo developmental competence. Therefore, FST treatment may potentially have a functional role in porcine embryogenesis that is broadly applicable to enhance in vitro embryo development.

• Journal of Animal Science and Technology
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• 제50권6호
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• pp.793-798
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• 2008

정액 내 세균오염 종류와 검출 빈도를 조사한 결과는 Table 1에서 보는 바와 같다. 돼지 정액 내 오염세균 중 검출빈도는 Staphylo- coccus genus, Proteus genus, Bacillus genus, Pasteulla genus, Acinetobacte genus 및 Serratia genus 등의 순으로 나타났다. 동정된 세균 중 33종의 세균에 대하여 디스크법을 이용하여 8종의 항생제에 대한 감수성을 조사 한 결과는 Table 2와 3에서 보는 바와 같다. 검출된 세균의 항생제 감수성을 조사한 결과 항생제 감수성이 높은 항생제는 Amikacin, Polymyxin B, Neomycin, Streptomycin, Kanamycin, Tetracycline, Erythromycin 및 Penicillin순 이었다. Enterococcus faecium와 Streptococcus uberis는 Streptomycin을 제외한 모든 항생제에 대하여 저항성이 있는 것으로 조사되었다.

• Journal of Animal Science and Technology
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• 제62권4호
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• pp.475-484
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• 2020

This study was conducted to evaluate the effect of the thickness of corn flakes produced by pressurized steam chamber (PSC) on rumen fermentation characteristics and nutrient degradability in Hanwoo and Holstein cows. Corn flakes were treated by PSC, in three groups based on corn flake thickness: < 2.5 mm (T1), 2.5-3.0 mm (T2), and > 3.0 mm (T3). Corn flake thickness significantly influenced pH (p < 0.01) and propionate concentration (p < 0.05) and slightly but not significantly influenced acetate, butyrate, and total-volatile fatty acids (T-VFA) concentrations. The dry matter (DM) degradability increased significantly with a reduction in corn flake thickness (p < 0.01), being significantly greater in T1 and T2 than T3 groups (p < 0.01) and similar between T1 and T2 groups throughout whole incubation time. Also, starch degradability was the lowest in T3 groups than others (p < 0.01). Thus, the present results showed that considering the production efficiency and economic feasibility, the optimal thickness of corn flakes produced in a PSC is recommended to be 2.5-3.0 mm.

• Asian-Australasian Journal of Animal Sciences
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• 제14권6호
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• pp.785-790
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• 2001

Twelve indigenous male goats, comprising of six intact and six castrated (2.5-3 years; $24.4{\pm}0.62kg$) were assigned evenly into two dietary treatments, viz. $I_0$ and $I_{100}$ and were used to study the effect of supplementation of iodine on the nutrient utilization when their diet contained Leucaena leaf meal. They were offered a conventional concentrate mixture along with Leucaena leucocephala leaf meal, the latter to meet 50% of their crude protein (CP) requirements, and supplemented with either no iodine ($I_0$) or 0.1 mg of iodine ($I_{100}$)/day/animal as potassium iodide for a period of 105 days. Wheat straw given ad libitum was the sole source of roughage. A metabolism trial of 8 days duration was conducted after 90 days of experimental feeding. It was observed that the overall dry matter (DM) intake during experimental period was higher (p<0.05) in $I_{100}$ group as compared to $I_0$ group (508.6 vs. $443.7g\;d^{-1}$). The intake of CP, digestible crude protein (DCP) and metabolisable energy (ME), although non-significant, tended to be higher in the iodine supplemented group, $I_{100}$. Digestibility of dry matter, organic matter (OM), CP, ether extract and crude fiber (CF) did not differ (p>0.05) between the treatments. However, nitrogen retention was higher (p<0.01) in $I_{100}$ than $I_0$ with the values being 2.63 and $1.70g\;d^{-1}$, respectively. No difference (p>0.05) was evident in the retention of calcium and phosphorus between the two groups. The castrated animal exhibited lower DM intake concurrent with higher digestibility of DM and crude fibre (p<0.05), and organic matter and total carbohydrates (p<0.01) when compared to intact ones. It was concluded that supplementation of iodine to leucaena based ration may help in improving the DM intake and nitrogen utilization by goats.

• 한국축산시설환경학회지
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• 제17권sup호
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• pp.21-34
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• 2011

In this study, researches on the development of country specific greenhouse gas measurement and sampling methods from the livestock sector were reviewed. Research on greenhouse gas emission factors was started in early 2000 but was not actively involved in the development of livestock sector based emission factor: since 2009, works are underway for the development of livestock sector based emission factor. Most of the research on greenhouse gas emission in the field of animal studies were done by National Institute of Animal Science, because of the uniqueness of the research laboratories. Methods of emission measurement are still not internationally certified and therefore, measurement and sampling methods for Korea livestock sector are being studied, consulting the worldwide research trends. Flux chamber method are commonly using in Korea for green house gas emission factors measurement. In recent years, continuous measurement of the microclimate was introduced to measure greenhouse gases from livestock manure storage facilities and the micrometeorology method should be adapted as recommended by Intergovernmental Penal on Climate Change (IPCC) Guideline.

• 한국가금학회지
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• 제42권4호
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• pp.285-289
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• 2015

Body and carcass weights are always being main focus in poultry industry. The aim of current study was to estimate the heritability, genetic and phenotypic correlations of growth-related traits in Korean native chicken. A total of 596 chickens representing five lines of Korean native chicken (Black, Gray-Brown, Red-Brown, White, and Yellow-Brown) were reared under the standard breeding procedures in the National Institute of Animal Science (NIAS), Korea. Their body weights were observed every two weeks from hatched to 20 weeks of age. In addition, shank length and carcass weight were also measured before and after slaughter, respectively. The ASReml-R program was used to compute genetic parameters. The body weight traits were moderate to high heritability values (ranged 0.29~0.63). The heritablilites of carcass weight ($h^2=0.20$) and shank length ($h^2=0.20$) were categorized as moderate. Moreover, both genetic and phenotypic correlations were ranged form 0.62 to 0.99 and ranged from 0.42 to 0.98, respectively. These findings can be useful information for quantitative genetic studies and breeding plan of Korean native chicken.