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1,358 full-text articles. Page 44 of 50.

Separation Of Phosvitin From Egg Yolk Without Using Organic Solvents, Samooel Jung, Dong U. Ahn, Ki Chang Nam, Hyun Joo Kim, Cheorun Jo 2013 Seoul National University

Separation Of Phosvitin From Egg Yolk Without Using Organic Solvents, Samooel Jung, Dong U. Ahn, Ki Chang Nam, Hyun Joo Kim, Cheorun Jo

Animal Science Publications

The objective of this study was to develop a new method to separate phosvitin from egg yolk without using organic solvents. Phosvitin was extracted from yolk granules using 10% NaCl or 10% (NH4)2SO4 (final concentration) and then treated with heat to precipitate the lipoproteins from the extracted solution. The optimal pH for the phosvitin extraction from yolk granules was determined, and the iron-binding ability of the extracted phosvitin (final product) was tested. Adding 10% (NH4)2SO4 disrupted the granules, and the subsequent thermal treatment at 90°C for 1 h precipitated low density and ...


Antimicrobial Effect Of 7-O-Butylnaringenin, A Novel Flavonoid, And Various Natural Flavonoids Against Helicobacter Pylori Strains, Sun Hee Moon, Jae Hoon Lee, Kee-Tae Kim, Yong-Suhn Park, Seung-Yeol Nah, Dong U. Ahn, Hyun-Dong Paik 2013 Iowa State University

Antimicrobial Effect Of 7-O-Butylnaringenin, A Novel Flavonoid, And Various Natural Flavonoids Against Helicobacter Pylori Strains, Sun Hee Moon, Jae Hoon Lee, Kee-Tae Kim, Yong-Suhn Park, Seung-Yeol Nah, Dong U. Ahn, Hyun-Dong Paik

Animal Science Publications

Abstract: The antimicrobial effect of a novel flavonoid (7-O-butylnaringenin) on Helicobacter pylori 26695, 51, and SS1 strains and its inhibitory effect on the urease activity of the strains were evaluated and compared with those of several natural flavonoids. First, various flavonoids were screened for antimicrobial activities using the paper disc diffusion method. Hesperetin and naringenin showed the strongest antimicrobial effects among the natural flavonoids tested, and thus hesperetin and naringenin were selected for comparison with 7-O-butylnaringenin. The antimicrobial effect of 7-O-butylnaringenin was greater than that of the hesperetin and naringenin. H. pylori 51 was ...


Factors Affecting Cooked Chicken Meat Flavour: A Review, Dinesh D. Jayasena, Dong U. Ahn, K. C. Nam, Cheorun Jo 2013 Chungnam National University

Factors Affecting Cooked Chicken Meat Flavour: A Review, Dinesh D. Jayasena, Dong U. Ahn, K. C. Nam, Cheorun Jo

Animal Science Publications

Flavour, one of the most important factors affecting consumers’ meat-buying behaviour and preferences, comprises mainly of taste and aroma. The cooked meat flavour, that is important from the producer and consumer point of view, is affected by several pre- and post-slaughter factors, including breed, diet, post-mortem ageing, and method of cooking. Moreover, chicken meat is prone to the development of off-flavours through lipid oxidation, which reduce the quality of the chicken meat. The aim of this review is to discuss the main factors affecting cooked chicken meat flavour which helps producers and consumers to produce the most flavoured and consistent ...


Genome-Wide Prediction Of Age At Puberty And Reproductive Longevity In Sows, Julie Kathleen Tart, Rodger K. Johnson, Justin W. Bundy, N. N. Ferdinand, A. M. McKnite, Jennifer R. Wood, Phillip S. Miller, M. F. Rothschild, Matthew L. Spangler, Dorian J. Garrick, Stephen D. Kachman, Daniel C. Ciobanu 2013 University of Nebraska-Lincoln

Genome-Wide Prediction Of Age At Puberty And Reproductive Longevity In Sows, Julie Kathleen Tart, Rodger K. Johnson, Justin W. Bundy, N. N. Ferdinand, A. M. Mcknite, Jennifer R. Wood, Phillip S. Miller, M. F. Rothschild, Matthew L. Spangler, Dorian J. Garrick, Stephen D. Kachman, Daniel C. Ciobanu

Faculty Papers and Publications in Animal Science

Traditional selection for sow reproductive longevity is ineffective due to low heritability and late expression of the trait. Incorporation of DNA markers into selection programs is potentially a more practical approach for improving sow lifetime productivity. Using a resource population of crossbred gilts, we explored pleiotropic sources of variation that influence age at puberty and reproductive longevity. Of the traits recorded before breeding, only age at puberty significantly affected the probability that females would produce a first parity litter. The genetic variance explained by 1-Mb windows of the sow genome, compared across traits, uncovered regions that influence both age at ...


Evidence Of Decreased Muscle Protein Turnover In Gilts Selected For Low Residual Feed Intake, Shannon M. Cruzen, A. J. Harris, Katrin Hollinger, R. M. Punt, Judson K. Grubbs, Joshua T. Selsby, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan 2013 Iowa State University

Evidence Of Decreased Muscle Protein Turnover In Gilts Selected For Low Residual Feed Intake, Shannon M. Cruzen, A. J. Harris, Katrin Hollinger, R. M. Punt, Judson K. Grubbs, Joshua T. Selsby, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan

Animal Science Publications

The objective of this study was to evaluate the contribution of muscle protein turnover (synthesis and degradation) to the biological basis for genetic differences in finisher pigs selected for residual feed intake (RFI). Residual feed intake is defined as the difference between expected feed intake (based on the achieved rate of BW gain and backfat depth of individual pigs) and the observed feed intake of the individual pig. We hypothesized that protein turnover would be reduced in pigs selected for low RFI. Twelve gilts from a line selected for 7 generations for low RFI and 12 from a contemporary line ...


Agricultural Cycles: Livestock Market Assessment And Long Term Prospective (Beef Cattle And Hogs), Lee L. Schulz 2013 Iowa State University

Agricultural Cycles: Livestock Market Assessment And Long Term Prospective (Beef Cattle And Hogs), Lee L. Schulz

Extension and Outreach Publications

In the current economic environment, livestock producers face numerous challenges that place constraints on the ability of this sector of agriculture to sustainably grow and prosper. Some of these factors include rising and volatile input costs, potential for severe equity drain, and broader economic influences. With these and other developing influences bombarding producers, and the likelihood of other challenges arising in the future, stakeholders are left pondering the economic situation facing the industry. Livestock production, like agriculture in general, is a notoriously cyclical industry. Given the livestock sector’s previous runs of prosperity as well as challenging times, it is ...


Whole Genome Association Studies Of Residual Feed Intake And Related Traits In The Pig, Suneel K. Onteru, Danielle M. Gorbach, Jennifer M. Young, Dorian J. Garrick, Jack C. M. Dekkers, Max F. Rothschild 2013 Iowa State University

Whole Genome Association Studies Of Residual Feed Intake And Related Traits In The Pig, Suneel K. Onteru, Danielle M. Gorbach, Jennifer M. Young, Dorian J. Garrick, Jack C. M. Dekkers, Max F. Rothschild

Animal Science Publications

Background

Residual feed intake (RFI), a measure of feed efficiency, is the difference between observed feed intake and the expected feed requirement predicted from growth and maintenance. Pigs with low RFI have reduced feed costs without compromising their growth. Identification of genes or genetic markers associated with RFI will be useful for marker-assisted selection at an early age of animals with improved feed efficiency.

Methodology/Principal findings

Whole genome association studies (WGAS) for RFI, average daily feed intake (ADFI), average daily gain (ADG), back fat (BF) and loin muscle area (LMA) were performed on 1,400 pigs from the divergently ...


Effect Of Dietary Cholesterol And Cholesterol Oxides On Blood Cholesterol, Lipids, And The Development Of Atherosclerosis In Rabbits, Sun Jin Hur, Byungrok Min, Ki Chang Nam, Eun Joo Lee, Dong U. Ahn 2013 Konkuk University

Effect Of Dietary Cholesterol And Cholesterol Oxides On Blood Cholesterol, Lipids, And The Development Of Atherosclerosis In Rabbits, Sun Jin Hur, Byungrok Min, Ki Chang Nam, Eun Joo Lee, Dong U. Ahn

Animal Science Publications

Two studies were conducted to determine the effects of dietary cholesterol (CHO) and cholesterol oxides (COPs) on the development of atherosclerosis and the changes in fatty acid and blood characteristics in rabbits. In the first study, forty male New Zealand white rabbits were divided into 5 groups and fed commercial rabbit chow with no added CHO or COPs, 1 g CHO, 0.9 g CHO + 0.1 g COPs, 0.8 g CHO + 0.2 g COPs, or 0.5 g CHO + 0.5 g COPs per kg diet. In the second study, 24 male New Zealand White rabbits were ...


Bacterial Immobilization On Cattle Hides: A Novel Concept For Reducing Bacterial Contamination Of Beef Carcasses, Joseph G. Sebranek, Aubrey Mendonca, Aura Daraba 2013 Iowa State University

Bacterial Immobilization On Cattle Hides: A Novel Concept For Reducing Bacterial Contamination Of Beef Carcasses, Joseph G. Sebranek, Aubrey Mendonca, Aura Daraba

Animal Science Publications

The meat of healthy cattle is sterile and surrounded by two areas that are highly contaminated with microorganisms. These areas are the hide and the intestinal tract. Because cattle hides can carry pathogens, there is a crucial need for technologies to prevent or minimize microbial cross-contamination from these sources. Two potential approaches to decontamination technology are: (1) decontamination of the hide before dressing or (2) decontamination of the carcass after de-hiding. Most decontamination techniques focus on physical removal or killing of microorganisms on the hide, using heat (80 ºC maximum) or a variety of chemical treatments.


Farm And Pig Factors Affecting Welfare During The Marketing Process, Anna K. Johnson, Leah M. Gesing, M. Ellis, J. J. McGlone, E. Berg, Steven M. Lonergan, Robert F. Fitzgerald, Locke A. Karriker, Alejandro Ramirez, Kenneth J. Stalder, Avi Sapkota, Rebecca K. Kephart, Joshua T. Selsby, Larry J. Sadler, Matthew J. Ritter 2013 Iowa State University

Farm And Pig Factors Affecting Welfare During The Marketing Process, Anna K. Johnson, Leah M. Gesing, M. Ellis, J. J. Mcglone, E. Berg, Steven M. Lonergan, Robert F. Fitzgerald, Locke A. Karriker, Alejandro Ramirez, Kenneth J. Stalder, Avi Sapkota, Rebecca K. Kephart, Joshua T. Selsby, Larry J. Sadler, Matthew J. Ritter

Animal Science Publications

The objective of this paper is to review the scientific literature to identify on-farm factors that contribute to market weight pig transportation losses. Transportation of market weight pigs is an essential element to the multisite pork production model used in the United States. In 2011 alone, approximately 111 million market weight pigs were transported from the finishing site to the abattoir. For pigs, the marketing process can present a combination of potentially novel, physical, and/or unfamiliar experiences that can be stressful. If the pig cannot cope with these sequential and additive stressors, then an increased rate of transportation losses ...


Divergent Genetic Selection For Residual Feed Intake Impacts Mitochondria Reactive Oxygen Species Production In Pigs, Judson K. Grubbs, A. N. Fritchen, Elisabeth J. Huff-Lonergan, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan 2013 Iowa State University

Divergent Genetic Selection For Residual Feed Intake Impacts Mitochondria Reactive Oxygen Species Production In Pigs, Judson K. Grubbs, A. N. Fritchen, Elisabeth J. Huff-Lonergan, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan

Animal Science Publications

The objective of this study was to determine the extent to which genetic selection for residual feed intake (RFI) impacts electron leakage and reactive oxygen species (ROS) production in mitochondria from muscle and liver tissue. Understanding how genetic selection for RFI impacts animal physiology and growth efficiency is of the utmost importance as the world population increases. Production efficiency is tied directly to energy use. Mitochondria were used in this study because they produce 90% of the ATP in the body and use a large majority of dietary energy. Mitochondria were isolated from both muscle and liver tissue from pigs ...


Flavour Chemistry Of Chicken Meat: A Review, Dinesh D. Jayasena, Dong U. Ahn, Ki Chang Nam, Cheorun Jo 2013 Chungnam National University

Flavour Chemistry Of Chicken Meat: A Review, Dinesh D. Jayasena, Dong U. Ahn, Ki Chang Nam, Cheorun Jo

Animal Science Publications

Flavour comprises mainly of taste and aroma and is involved in consumers’ meat-buying behavior and preferences. Chicken meat flavour is supposed to be affected by a number of ante- and post-mortem factors, including breed, diet, post-mortem ageing, method of cooking, etc. Additionally, chicken meat is more susceptible to quality deterioration mainly due to lipid oxidation with resulting off-flavours. Therefore, the intent of this paper is to highlight the mechanisms and chemical compounds responsible for chicken meat flavour and off-flavour development to help producers in producing the most flavourful and consistent product possible. Chicken meat flavour is thermally derived and the ...


Intestinal Integrity, Endotoxin Transport And Detoxification In Pigs Divergently Selected For Residual Feed Intake, Venkatesh Mani, A. J. Harris, Aileen F. Keating, Thomas E. Weber, Jack C. M. Dekkers, Nicholas K. Gabler 2013 Iowa State University

Intestinal Integrity, Endotoxin Transport And Detoxification In Pigs Divergently Selected For Residual Feed Intake, Venkatesh Mani, A. J. Harris, Aileen F. Keating, Thomas E. Weber, Jack C. M. Dekkers, Nicholas K. Gabler

Animal Science Publications

Microbes and microbial components potentially impact the performance of pigs through immune stimulation and altered metabolism. These immune modulating factors can include endotoxin from gram negative bacterial outer membrane component, commonly referred to as lipopolysaccharide (LPS). In this study, our objective was to examine the relationship between intestinal barrier integrity, endotoxin and inflammation with feed efficiency (FE), using pig lines divergently selected for residual feed intake (RFI) as a model. Twelve gilts (62 ± 3 kg BW) from the low RFI (LRFI, more efficient) and 12 from the high RFI (HRFI, less efficient) were used. Individual performance data was recorded for ...


Properties Of Natural And Organic 'Naturally Cured' Meats, Joseph G. Sebranek, Gary Sullivan 2013 Iowa State University

Properties Of Natural And Organic 'Naturally Cured' Meats, Joseph G. Sebranek, Gary Sullivan

Animal Science Publications

A somewhat unusual aspect to "cured" natural and organic processed meats is that nitrate and nitrite cannot be added as ingredients, because "preservatives" are not permitted in natural and organic foods. This has resulted in alternative meat-curing processes that utilize natural sources of nitrate, typically celery juice concentrate or powder.


Nebraska Bqa: Herd Health Plan/Protocol, Rob Eirich 2013 University of Nebraska-Lincoln

Nebraska Bqa: Herd Health Plan/Protocol, Rob Eirich

Nebraska Beef Quality Assurance Program

Nebraska cattlemen have demonstrated a commitment to the integrity of today's beef products by implementing sound cattle management practices. Consumers are looking for beef raised in a healthy and safe environment. An appropriate Herd Health Plan/Protocol ensures that all cattle are raised in the best health.


Nebraska Bqa: Veterinarian Client Patient Relationship, Rob Eirich 2013 University of Nebraska-Lincoln

Nebraska Bqa: Veterinarian Client Patient Relationship, Rob Eirich

Nebraska Beef Quality Assurance Program

Beef producers are committed producing a high quality, safe and wholesome beef product. A commitment to herd health and veterinary input is critical to achieving this goal. To this end, developing a veterinarian client-patient relationship (VCPR) is important and will benefit all aspects of cattle performance. Veterinarians' working understanding of cattle disease and parasites can help cattle raisers develop targeted vaccination and treatment programs.


Bioinformatics Analysis Of Transcriptome Dynamics During Growth In Angus Cattle Longissimus Muscle, Sonia J. Moisa, Daniel W. Shike, Daniel E. Graugnard, Sandra L. Rodriquez-Zas, Robin E. Everts, Harris A. Lewin, Dan B. Faulkner, Larry L. Berger, Juan J. Loor 2013 University of Illinois

Bioinformatics Analysis Of Transcriptome Dynamics During Growth In Angus Cattle Longissimus Muscle, Sonia J. Moisa, Daniel W. Shike, Daniel E. Graugnard, Sandra L. Rodriquez-Zas, Robin E. Everts, Harris A. Lewin, Dan B. Faulkner, Larry L. Berger, Juan J. Loor

Faculty Papers and Publications in Animal Science

Transcriptome dynamics in the longissimus muscle (LM) of young Angus cattle were evaluated at 0, 60, 120, and 220 days from early-weaning. Bioinformatic analysis was performed using the dynamic impact approach (DIA) by means of Kyoto Encyclopedia of Genes and Genomes (KEGG) and Database for Annotation, Visualization and Integrated Discovery (DAVID) databases. Between 0 to 120 days (growing phase) most of the highly-impacted pathways (eg, ascorbate and aldarate metabolism, drug metabolism, cytochrome P450 and Retinol metabolism) were inhibited. The phase between 120 to 220 days (finishing phase) was characterized by the most striking differences with 3,784 differentially expressed genes ...


Review: Life-Cycle, Total-Industry Genetic Improvement Of Feed Efficiency In Beef Cattle: Blueprint For The Beef Improvement Federation, Merlyn K. Nielsen, M. D. MacNeil, J. C. M. Dekkers, D. H. Crews Jr., T. A. Rathje, R. Mark Enns, R. L. Weaber 2013 University of Nebraska-Lincoln

Review: Life-Cycle, Total-Industry Genetic Improvement Of Feed Efficiency In Beef Cattle: Blueprint For The Beef Improvement Federation, Merlyn K. Nielsen, M. D. Macneil, J. C. M. Dekkers, D. H. Crews Jr., T. A. Rathje, R. Mark Enns, R. L. Weaber

Faculty Papers and Publications in Animal Science

On a life-cycle basis, beef animals are able to consume large amounts of low-cost, low-quality forages relative to higher-cost concentrates compared with pigs and chickens. However, of the 3, beef is still more expensive to produce on a cost–per–edible pound basis. Accordingly, there is need for genetic programs and management changes that will improve efficiency, sustainability, and profitability of beef production. Options include improving reproductive rate, reducing feed used for maintenance, or both, while not reducing output. A goal for improving efficiency of feed utilization is to reduce the amount or proportion of feed used for maintenance. Such ...


Genetic Evaluation Of Days To Harvest In Crossbred Lambs, R. M. Lewis, G. C. Marquez, M. H. Davies, D. R. Notter, Rainer Roehe, L. Bünger, G. Simm 2013 Scottish Agricultural College

Genetic Evaluation Of Days To Harvest In Crossbred Lambs, R. M. Lewis, G. C. Marquez, M. H. Davies, D. R. Notter, Rainer Roehe, L. Bünger, G. Simm

Faculty Papers and Publications in Animal Science

Days to harvest (DTH) is the number of days a lamb is fed before reaching a target level of fatness. Although economically relevant, this trait has not been thoroughly evaluated in sheep. Most lambs harvested in the United Kingdom are crossbreds sired by purebred terminal sires, with Charollais, Suffolk, and Texel most commonly used. Sires from these breeds were selected on an index designed to increase lean growth while constraining fat. The purpose of this research was to 1) evaluate the effects of index selection in terminal sires on DTH and 2) evaluate the feasibility of incorporating DTH into genetic ...


Genetic Testing For Tmem154 Mutations Associated With Lentivirus Susceptibility In Sheep, Michael P. Heaton, Theodore S. Kalbfleisch, Dustin T. Petrik, Barry Simpson, James W. Kijas, Michael L. Clawson, Carol G. Chitko-McKown, Gregory P. Harhay, Kreg A. Leymaster, International Sheep Genomics Consortium 2013 US Meat Animal Research Center, Clay Center, NE

Genetic Testing For Tmem154 Mutations Associated With Lentivirus Susceptibility In Sheep, Michael P. Heaton, Theodore S. Kalbfleisch, Dustin T. Petrik, Barry Simpson, James W. Kijas, Michael L. Clawson, Carol G. Chitko-Mckown, Gregory P. Harhay, Kreg A. Leymaster, International Sheep Genomics Consortium

Roman L. Hruska U.S. Meat Animal Research Center

In sheep, small ruminant lentiviruses cause an incurable, progressive, lymphoproliferative disease that affects millions of animals worldwide. Known as ovine progressive pneumonia virus (OPPV) in the U.S., and Visna/Maedi virus (VMV) elsewhere, these viruses reduce an animal’s health, productivity, and lifespan. Genetic variation in the ovine transmembrane protein 154 gene (TMEM154) has been previously associated with OPPV infection in U.S. sheep. Sheep with the ancestral TMEM154 haplotype encoding glutamate (E) at position 35, and either form of an N70I variant, were highly-susceptible compared to sheep homozygous for the K35 missense mutation. Our current overall aim was ...


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