Shin Ja Lee
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View article: Integrated analysis of rumen metabolomics and metataxonomics to understand changes in metabolic and microbial community in Korean native goats under heat stress
Integrated analysis of rumen metabolomics and metataxonomics to understand changes in metabolic and microbial community in Korean native goats under heat stress Open
View article: A Text-Mining Analysis of Research Trends in Animal-Assisted Therapy
A Text-Mining Analysis of Research Trends in Animal-Assisted Therapy Open
Text-mining techniques were used to provide basic data to related policy stakeholders and academic researchers by collecting and analyzing research trends related to animal-mediated healing in a short time. A total of 776 studies were coll…
View article: Application of multi-omics to investigate the effect of Pinus koraiensis cone essential oil on rumen methane emission, microbial community, and metabolites
Application of multi-omics to investigate the effect of Pinus koraiensis cone essential oil on rumen methane emission, microbial community, and metabolites Open
Background Enteric methane (CH 4 ) excreted by ruminants is a major source of anthropogenic greenhouse gas emissions in the global environment. Pinus koraiensis cone essential oil (PEO) contains functional compounds such as monoterpene hyd…
View article: Analysis of Fecal Microbial Changes in Young Calves Following Bovine Rotavirus Infection
Analysis of Fecal Microbial Changes in Young Calves Following Bovine Rotavirus Infection Open
The objective of the present study was to identify changes in fecal microbiota and predict the functional features of healthy calves and those infected with rotavirus over time. Six Holstein calves (average body weight 43.63 ± 1.19 kg, age…
View article: Oral administration of Pinus koraiensis cone essential oil reduces rumen methane emission by altering the rumen microbial composition and functions in Korean native goat (Capra hircus coreanae)
Oral administration of Pinus koraiensis cone essential oil reduces rumen methane emission by altering the rumen microbial composition and functions in Korean native goat (Capra hircus coreanae) Open
This study aimed to investigate Pinus koraiensis cone essential oil (PEO) as a methane (CH 4 ) inhibitor and determine its impact on the taxonomic and functional characteristics of the rumen microbiota in goats. A total of 10 growing Korea…
View article: Blood and milk metabolites of Holstein dairy cattle for the development of objective indicators of a subacute ruminal acidosis
Blood and milk metabolites of Holstein dairy cattle for the development of objective indicators of a subacute ruminal acidosis Open
Objective: The purpose of this study was to perform a comparative analysis of metabolite levels in serum and milk obtained from cows fed on different concentrate to forage feed ratios.Methods: Eight lactating Holstein cows were divided int…
View article: Red seaweed extracts reduce methane production by altering rumen fermentation and microbial composition in vitro
Red seaweed extracts reduce methane production by altering rumen fermentation and microbial composition in vitro Open
A series of in vitro batch culture incubations were carried out to investigate changes in rumen fermentation characteristics, methane (CH 4 ) production, and microbial composition in response to supplementation with five different red seaw…
View article: Dose–Response Effects of Bamboo Leaves on Rumen Methane Production, Fermentation Characteristics, and Microbial Abundance In Vitro
Dose–Response Effects of Bamboo Leaves on Rumen Methane Production, Fermentation Characteristics, and Microbial Abundance In Vitro Open
Ruminants produce large amounts of methane as part of their normal digestive processes. Recently, feed additives were shown to inhibit the microorganisms that produce methane in the rumen, consequently reducing methane emissions. The objec…
View article: Comparison of metabolites in rumen fluid, urine, and feces of dairy cow from subacute ruminal acidosis model measured by proton nuclear magnetic resonance spectroscopy
Comparison of metabolites in rumen fluid, urine, and feces of dairy cow from subacute ruminal acidosis model measured by proton nuclear magnetic resonance spectroscopy Open
Objective: In this study, metabolites that changed in the rumen fluid, urine and feces of dairy cows fed different feed ratios were investigated.Methods: Eight Holstein cows were used in this study. Rumen fluid, urine, and feces were colle…
View article: Metabolomic and transcriptomic study to understand changes in metabolic and immune responses in steers under heat stress
Metabolomic and transcriptomic study to understand changes in metabolic and immune responses in steers under heat stress Open
View article: Dose-response effects of <i>Poncirus trifoliata</i> extract on <i>in vitro</i> ruminal methane production, fermentation, and microbial abundance
Dose-response effects of <i>Poncirus trifoliata</i> extract on <i>in vitro</i> ruminal methane production, fermentation, and microbial abundance Open
The effects of different inclusion rates of Poncirus trifoliata (PT) extract on in vitro ruminal fermentation parameters were investigated. Six dose levels were referred to as follows: PT0, control (without PT); PT1, (3 mg/L); PT3, (9 mg/L…
View article: Effects of oriental medicinal plants on the reduction of methane production mediated by microbial population
Effects of oriental medicinal plants on the reduction of methane production mediated by microbial population Open
Methane plays a major role in greenhouse gas emissions contributing to climate change. Therefore, reducing methane production by ruminants is a primary goal but significant challenge. In this study, five oriental medicine plant extracts (O…
View article: Metabolic profiling of serum and urine in lactating dairy cows affected by subclinical ketosis using proton nuclear magnetic resonance spectroscopy
Metabolic profiling of serum and urine in lactating dairy cows affected by subclinical ketosis using proton nuclear magnetic resonance spectroscopy Open
Ketosis is associated with high milk yield during lactating or insufficient feed intake in lactating dairy cows. However, few studies have been conducted on the metabolomics of ketosis in Korean lactating dairy cows. The present study aime…
View article: Metabolic Profiling of Rumen fluid and Serum in Holstein Steers Exposure by Heat-Stressed Using Proton Nuclear Magnetic Resonance Spectroscopy
Metabolic Profiling of Rumen fluid and Serum in Holstein Steers Exposure by Heat-Stressed Using Proton Nuclear Magnetic Resonance Spectroscopy Open
이번 연구는 양성자 핵자기공명분광기를 이용하여 고온스트레스에 따른 Holstein 수소의 반추위액과 혈액 내 대사체 프로파일링을 실시하였다. 실험동물은 Holstein 수소 6마리를 이용하였다. 반추위액과 혈액은 적온기(OTP, THI : 64.92)와 고온기(HTP, THI : 79.13)환경에서 아침 사료 급여 전 각각 채취하였다. 샘플들의 대사체는 proton nuclear magnetic resonance (¹H-NM…
View article: Effects of seaweed extracts on in vitro rumen fermentation characteristics, methane production, and microbial abundance
Effects of seaweed extracts on in vitro rumen fermentation characteristics, methane production, and microbial abundance Open
View article: Metabolic Profiling of Rumen Fluid and Milk in Lactating Dairy Cattle Influenced by Subclinical Ketosis Using Proton Nuclear Magnetic Resonance Spectroscopy
Metabolic Profiling of Rumen Fluid and Milk in Lactating Dairy Cattle Influenced by Subclinical Ketosis Using Proton Nuclear Magnetic Resonance Spectroscopy Open
Ketosis metabolic research on lactating dairy cattle has been conducted worldwide; however, there have been very few Korean studies. Biofluids from lactating dairy cattle are necessary to study ketosis metabolic diseases. Six Holstein cows…
View article: Effects of Olive (Olea europaea L.) Leaves with Antioxidant and Antimicrobial Activities on In Vitro Ruminal Fermentation and Methane Emission
Effects of Olive (Olea europaea L.) Leaves with Antioxidant and Antimicrobial Activities on In Vitro Ruminal Fermentation and Methane Emission Open
We evaluated whether olive leaves (OLs) are effective as feed additives and supplements for ruminants and the potential methane reduction effects during in vitro fermentation. Two Hanwoo cows (460 ± 20 kg) equipped with cannula were fed Ti…
View article: Dynamic changes in blood immune cell composition and function in Holstein and Jersey steers in response to heat stress
Dynamic changes in blood immune cell composition and function in Holstein and Jersey steers in response to heat stress Open
View article: Metabolomics comparison of serum and urine in dairy cattle using proton nuclear magnetic resonance spectroscopy
Metabolomics comparison of serum and urine in dairy cattle using proton nuclear magnetic resonance spectroscopy Open
Objective: The aim of the study was to conduct metabolic profiling of dairy cattle serum and urine using proton nuclear magnetic resonance (1H-NMR) spectroscopy and to compare the results obtained with those of other dairy cattl…
View article: In Vitro Screening of East Asian Plant Extracts for Potential Use in Reducing Ruminal Methane Production
In Vitro Screening of East Asian Plant Extracts for Potential Use in Reducing Ruminal Methane Production Open
Indiscriminate use of antibiotics can result in antibiotic residues in animal products; thus, plant compounds may be better alternative sources for mitigating methane (CH4) production. An in vitro screening experiment was conducted to eval…
View article: Exploration of metabolite profiles in the biofluids of dairy cows by proton nuclear magnetic resonance analysis
Exploration of metabolite profiles in the biofluids of dairy cows by proton nuclear magnetic resonance analysis Open
Studies that screen for metabolites produced in ruminants are actively underway. We aimed to evaluate the metabolic profiles of five biofluids (ruminal fluid, serum, milk, urine, and feces) in dairy cow by using proton nuclear magnetic res…
View article: New challenges for efficient usage of Sargassum fusiforme for ruminant production
New challenges for efficient usage of Sargassum fusiforme for ruminant production Open
Sargassum fusiforme , which is a type of brown algae, can provide fiber and minerals to ruminant diets. In this study, dried S. fusiforme was tested in vitro at four different doses 1, 3, 5, and 10% of the total ration for its effect on ru…
View article: Effects of the Appropriate Addition of Antioxidants from Pinus densiflora and Mentha canadensis Extracts on Methane Emission and Rumen Fermentation
Effects of the Appropriate Addition of Antioxidants from Pinus densiflora and Mentha canadensis Extracts on Methane Emission and Rumen Fermentation Open
This study aimed to investigate the optimal addition of terpene-based Pinus densiflora and Mentha canadensis extracts, with antioxidant and methane reduction effects, as feed supplements to ruminants. Two cannulated steers (450 ± 30 kg), c…
View article: Effects of supplementation levels of <i>Allium fistulosum</i> L. extract on in vitro ruminal fermentation characteristics and methane emission
Effects of supplementation levels of <i>Allium fistulosum</i> L. extract on in vitro ruminal fermentation characteristics and methane emission Open
Background Ruminants release the majority of agricultural methane, an important greenhouse gas. Different feeds and additives are used to reduce emissions, but each has its drawbacks. This experiment was conducted to determine the effects …
View article: Metabolomics Comparison of Hanwoo (Bos taurus coreanae) Biofluids Using Proton Nuclear Magnetic Resonance Spectroscopy
Metabolomics Comparison of Hanwoo (Bos taurus coreanae) Biofluids Using Proton Nuclear Magnetic Resonance Spectroscopy Open
The aim of this study was to identify the metabolomic profiles of rumen fluid, serum, and urine from Hanwoo (Bos taurus coreanae), using proton nuclear magnetic resonance (1H-NMR) spectroscopy. In all, 189, 110, and 188 metabolites were id…
View article: Metabolomics comparison of rumen fluid and milk in dairy cattle using proton nuclear magnetic resonance spectroscopy
Metabolomics comparison of rumen fluid and milk in dairy cattle using proton nuclear magnetic resonance spectroscopy Open
Objective: The metabolites that constitute the rumen fluid and milk in dairy cattle were analyzed using proton nuclear magnetic resonance (1H-NMR) spectroscopy and compared with the results obtain for other dairy cattle herds wo…
View article: Research fecal metabolite according to fed different ratios of roughage to concentrate on lactating cow using 1 H-NMR analysis
Research fecal metabolite according to fed different ratios of roughage to concentrate on lactating cow using 1 H-NMR analysis Open
View article: Impact of Ecklonia stolonifera extract on in vitro ruminal fermentation characteristics, methanogenesis, and microbial populations
Impact of Ecklonia stolonifera extract on in vitro ruminal fermentation characteristics, methanogenesis, and microbial populations Open
E. stolonifera showed no detrimental effect on rumen fermentation characteristics and microbial population. Through these results E. stolonifera has potential as a viable feed supplement to ruminants.
View article: Effect of sodium stearoyl-2-lactylate supplementation on lactation performance, blood-biochemical profile, and economic efficacy of mid-lactation Holstein cows
Effect of sodium stearoyl-2-lactylate supplementation on lactation performance, blood-biochemical profile, and economic efficacy of mid-lactation Holstein cows Open
The milk sales revenue related to SSL supplementation of the TRT 0.1 diet was increased by up to 5.4% compared to the milk sales revenue of the CON diet. Therefore, 0.1% SSL supplementation might be effective and profitable during the mid-…
View article: Effect of optimal sodium stearoyl-2-lactylate supplementation on growth performance and blood and carcass characteristics in Hanwoo steers during the early fattening period
Effect of optimal sodium stearoyl-2-lactylate supplementation on growth performance and blood and carcass characteristics in Hanwoo steers during the early fattening period Open
Our study suggests that a TDN 0.5% down spec with 0.1% SSL supplemented feed may be effective and profitable for the early fattening period of Hanwoo steers without causing adverse effects.