Jae-Cheol Jang
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View article: Impacts of Bacillus-based biotics and an enzyme cocktail on growth performance, immunity, and gut pathogenic microorganisms of nursery pigs under commercial conditions
Impacts of Bacillus-based biotics and an enzyme cocktail on growth performance, immunity, and gut pathogenic microorganisms of nursery pigs under commercial conditions Open
Introduction The prohibition of antibiotics in animal feed has increased interest in alternatives, such as phytogenic compounds, pro- and prebiotics, organic acids, and exogenous enzymes. Among these, Bacillus-based biotics and enzyme cock…
View article: PSI-13 Effects of nutrient density diet with or without emulsifier supplementation on apparent total tract digestibility, apparent ileal digestibility and urine nitrogen content in weaned pigs
PSI-13 Effects of nutrient density diet with or without emulsifier supplementation on apparent total tract digestibility, apparent ileal digestibility and urine nitrogen content in weaned pigs Open
The recent increase in feed price has prompted scientific investigation to find effective strategy to reduce feed cost without compromising the performance of the animals. Several studies showed the supplemental effect of emulsifiers in th…
View article: 174 Effects of various probiotics, synbiotics, and enzyme cocktail on broiler feed
174 Effects of various probiotics, synbiotics, and enzyme cocktail on broiler feed Open
The prohibition of antibiotics in animal feed has increased interest in alternative feed additives, such as probiotics (PRO), synbiotics (SYO), and enzyme cocktails (EC). This study aimed to investigate the effects of PRO, SYO, and EC on g…
View article: PSI-14 In vivo evaluation on reproduction performance of sow and growth outcomes in offspring by Fermented High-Moisture Bio-Feeds
PSI-14 In vivo evaluation on reproduction performance of sow and growth outcomes in offspring by Fermented High-Moisture Bio-Feeds Open
In the modern pig farming, optimizing sow health and productivity, particularly during gestation and lactation is crucial for the profitability. Consequently, high-moisture feed (HMF) has emerged as a promising alternative to conventional …
View article: Effects of dietary star anise (Illicium verum) supplementation during late gestation and lactation on the performance of multiparous sows and their progeny until 21 days post-weaning
Effects of dietary star anise (Illicium verum) supplementation during late gestation and lactation on the performance of multiparous sows and their progeny until 21 days post-weaning Open
Objective: This study aimed to investigate the effects of star anise (SA) supplementation during late gestation and lactation on the performance of multiparous sows and their progeny until 21 days post-weaning.Methods: A total of forty pre…
View article: Effects of bacteriophage cocktail supplementation in gestation diet on reproductive performance, blood profile, milk composition, and fecal microflora of sows
Effects of bacteriophage cocktail supplementation in gestation diet on reproductive performance, blood profile, milk composition, and fecal microflora of sows Open
Objective: The present study aimed to evaluate the effects of bacteriophage cocktail supplementation in diet of gestation sows on both the sows and their progeny.Methods: A total of 57 F1 multiparous sows (Yorkshire×Landrace) were allotted…
View article: Phenotypic Variation in the Breast of Live Broiler Chickens Over Time
Phenotypic Variation in the Breast of Live Broiler Chickens Over Time Open
This study utilized the non-invasive MyotonPRO® device to analyze the stiffness in breast muscles of commercial broilers (Ross 308 and Arbor Acres) and compared these findings with data reported for Ross 708, where Woody Breast …
View article: Effect of various levels of milk by-products on growth performance, blood profiles, and intestinal morphology of weaned pigs
Effect of various levels of milk by-products on growth performance, blood profiles, and intestinal morphology of weaned pigs Open
This experiment was conducted to evaluate various levels of milk by-products in weaned pig's diet on growth performance, blood profiles, diarrhea incidence, and intestinal morphology of weaned pigs. A total of 160 weaned pigs ([Yorkshire ×…
View article: The Management of Food Waste Recycling for a Sustainable Future: A Case Study on South Korea
The Management of Food Waste Recycling for a Sustainable Future: A Case Study on South Korea Open
South Korea has made remarkable progress in food waste recycling through efficient policies. Around 30% of total waste is food waste, with over 90% of it effectively separated and collected. Challenges remain in optimizing biogas productio…
View article: PSXI-15 Estimating Vegetation Index for Outdoor Free-Range Pig Production Using Yolo
PSXI-15 Estimating Vegetation Index for Outdoor Free-Range Pig Production Using Yolo Open
In the United States, outdoor pig production is steadily increasing thanks to the niche market strategy for small farmers, consumer antipathy to factory farm products, and the trend of eco-friendly and animal welfare, and research on this …
View article: Effects of an extra-high slaughter weight and a low-lysine diet on growth and meat quality of finishing gilts
Effects of an extra-high slaughter weight and a low-lysine diet on growth and meat quality of finishing gilts Open
The present study aimed to find out the feasibility of increasing the meat quality of finishing gilts by increasing their slaughter weight (SW) to an extra-high (XH) level and also by using a low-lysine (lys) diet in XH-weight pig producti…
View article: The current status of Korean native pig production
The current status of Korean native pig production Open
Korean native pigs (KNPs) have been one of the traditional livestock primarily raised in rural areas of Korea for centuries. KNPs have adapted to the climate and geography of the Korean Peninsula for a long time, exhibiting excellent adapt…
View article: The Effect of Reduced Crude Protein on Growth Performance, Nutrient Digestibility, and Meat Quality in Weaning to Finishing Pigs
The Effect of Reduced Crude Protein on Growth Performance, Nutrient Digestibility, and Meat Quality in Weaning to Finishing Pigs Open
This study aimed to evaluate optimal crude protein (CP) levels based on the National Research Council guidelines from 1998 and 2012 and their impacts on growth performance, fecal score, blood profiles, nutrient digestibility, and carcass c…
View article: Effects of lysine concentration of the diet on growth performance and meat quality in finishing pigs with high slaughter weights
Effects of lysine concentration of the diet on growth performance and meat quality in finishing pigs with high slaughter weights Open
The present study aimed to investigate the feasibility of using a diet low in lysine content as a means for increasing the intramuscular fat (IMF) content and pork muscle quality of finishing pigs. Thirty-two crossbred gilts and barrows we…
View article: Effect of feeding frequency on reproductive performances and stress responses in gestating sows
Effect of feeding frequency on reproductive performances and stress responses in gestating sows Open
The objective of this study was to investigate the influence of feeding frequency on a sow's reproductive performance and stress response during gestation. A total of twenty multiparous sows (Yorkshire × Landrace) were used in a completely…
View article: The Role of Dietary Fiber in Improving Pig Welfare
The Role of Dietary Fiber in Improving Pig Welfare Open
This review aims to discuss the effects of dietary fiber sources with various levels on stereotypic behaviors in sows. There are a variety of dietary fiber sources that are supplemented to feeds for sows. However, dietary fiber sources hav…
View article: Effects of lactic acid bacteria fermented feed and three types of lactic acid bacteria (L. plantarum, L. acidophilus, B. animalis) on intestinal microbiota and T cell polarization (Th1, Th2, Th17, Treg) in the intestinal lymph nodes and spleens of rats
Effects of lactic acid bacteria fermented feed and three types of lactic acid bacteria (L. plantarum, L. acidophilus, B. animalis) on intestinal microbiota and T cell polarization (Th1, Th2, Th17, Treg) in the intestinal lymph nodes and spleens of rats Open
Objective: In this study, we investigated the effects of Rubus coreanus-derived lactic acid bacteria (LAB) fermented feed (RC-LAB fermented feed) and three types of LAB (Lactobacillus plantarum, Lactobacillus acidophilus, …
View article: Intestinal microbial composition changes induced by Lactobacillus plantarum GBL 16, 17 fermented feed and intestinal immune homeostasis regulation in pigs
Intestinal microbial composition changes induced by Lactobacillus plantarum GBL 16, 17 fermented feed and intestinal immune homeostasis regulation in pigs Open
In this study, Rubus coreanus (R. coreanus) byproducts with high polyphenol content were fermented with R. coreanus-derived lactic acid bacteria (Lactobacillus plantarum GBL 16 and 17). Then the effect of R. …
View article: Direct-fed Enterococcus faecium plus bacteriophages as substitutes for pharmacological zinc oxide in weanling pigs: effects on diarrheal score and growth
Direct-fed Enterococcus faecium plus bacteriophages as substitutes for pharmacological zinc oxide in weanling pigs: effects on diarrheal score and growth Open
Objective: Effects of direct-fed Enterococcus faecium plus bacteriophages (EF-BP) were investigated as potential substitutes for pharmacological ZnO for weanling pigs.Methods: Dietary treatments were supplementations to a basal diet with n…
View article: Management factors affecting gestating sows’ welfare in group housing systems — A review
Management factors affecting gestating sows’ welfare in group housing systems — A review Open
Public concern on the methods of raising food-producing animals has increased, especially in the last two decades, leading to voluntary and mandated changes in the animal production methods. The primary objective of these changes is to imp…
View article: 72 Life Cycle Assessment of Environmental Impacts of Swine Growing-Finishing Feeding Programs Using Different Amounts of Soybean Meal, Distillers Dried Grains with Solubles, and Crystalline Amino Acids
72 Life Cycle Assessment of Environmental Impacts of Swine Growing-Finishing Feeding Programs Using Different Amounts of Soybean Meal, Distillers Dried Grains with Solubles, and Crystalline Amino Acids Open
The objective of this study was to quantify and compare the environmental impact, using life-cycle assessment (LCA) analysis, of 4 different, 4-phase growing-finishing feeding programs consisting of diets containing corn and soybean meal (…
View article: 264 Awardee Talk: A Systems Approach for Evaluating Productivity, Nutritional Efficiency, and Environmental Impacts of Feeding Programs for Growing-Finishing Pigs
264 Awardee Talk: A Systems Approach for Evaluating Productivity, Nutritional Efficiency, and Environmental Impacts of Feeding Programs for Growing-Finishing Pigs Open
Traditional evaluation of swine feeding programs have generally focused only on economically important performance and carcass measures but achieving sustainable pork production also requires formulating diets to reduce negative environmen…
View article: Effect of supplementing lactation and nursery pig diets with capsaicin on growth performance and gene expression of nursery pigs
Effect of supplementing lactation and nursery pig diets with capsaicin on growth performance and gene expression of nursery pigs Open
The objective of this study was to determine the effects of supplementing capsaicin in diets for lactating sows and their offspring on the growth performance and gene expression of pigs postweaning. Twenty-eight multiparous sows were fed c…
View article: PSVI-5 Effects of Feeding Corn Distillers Dried Grains with Solubles (cDDGS) Diets with and Without Supplemental Enzymes on Growth Performance of Pigs: A Meta-analysis
PSVI-5 Effects of Feeding Corn Distillers Dried Grains with Solubles (cDDGS) Diets with and Without Supplemental Enzymes on Growth Performance of Pigs: A Meta-analysis Open
A literature review and meta-analysis was conducted to determine the effects of dietary energy system (NE or ME), oil content of cDDGS, diet inclusion levels, and pig age on growth performance in pigs fed cDDGS-based diets. The mean differ…
View article: Measures Matter—Determining the True Nutri-Physiological Value of Feed Ingredients for Swine
Measures Matter—Determining the True Nutri-Physiological Value of Feed Ingredients for Swine Open
Many types of feed ingredients are used to provide energy and nutrients to meet the nutritional requirements of swine. However, the analytical methods and measures used to determine the true nutritional and physiological (“nutri-physiologi…
View article: Determination of in vitro dry matter, protein, and fiber digestibility and fermentability of novel corn coproducts for swine and ruminants
Determination of in vitro dry matter, protein, and fiber digestibility and fermentability of novel corn coproducts for swine and ruminants Open
New processes are being used in some dry-grind ethanol plants in the United States and Brazil to improve ethanol yield and efficiency of production while also providing nutritionally enhanced corn coproducts compared with conventional corn…
View article: Amino acid digestibility in diets containing copra meal with β-mannanase fed to growing pigs
Amino acid digestibility in diets containing copra meal with β-mannanase fed to growing pigs Open
Objective: The objective of this study was to estimate standardized ileal digestibility (SID) of amino acids (AA) in growing pigs fed diets containing increasing levels of copra meal (CM) with β-mannanase supplementation.Methods: Twenty ba…
View article: Effects of feeding corn distillers dried grains with solubles diets without or with supplemental enzymes on growth performance of pigs: a meta-analysis
Effects of feeding corn distillers dried grains with solubles diets without or with supplemental enzymes on growth performance of pigs: a meta-analysis Open
A meta-analysis was conducted to determine the effects of the dietary energy system (net energy or metabolizable energy), oil content of corn distillers dried grains with solubles (cDDGS), diet inclusion levels, and pig age on growth perfo…
View article: 134 Effects of Aspergillus oryzae prebiotic on in vitro digestibility and fermentability of fibrous ingredients and diets
134 Effects of Aspergillus oryzae prebiotic on in vitro digestibility and fermentability of fibrous ingredients and diets Open
It has been an increasing interest to develop strategies to improve utilization of fibrous ingredients in swine. The objective of this study was to determine the effects of an Aspergillus oryzae prebiotic (AOP, Amaferm®) on in vitro digest…
View article: 21 Effects of supplementing late gestation sow diets with zinc on pre-weaning mortality of pigs under commercial rearing conditions
21 Effects of supplementing late gestation sow diets with zinc on pre-weaning mortality of pigs under commercial rearing conditions Open
The objective of this experiment was to determine pre-weaning survival of pigs when sows were supplemented with 3 dietary levels of Zn in late gestation. Gilts and sows (n = 339) were assigned to one of three dietary treatments based on pa…