Veterinary Medicine Commons^™

Prevalence Of Dog Heartworm (Dirofilaria Immitis) Infection In Invasive Aedes Aegypti And Aedes Albopictus Mosquitoes In Southern California, Irene Hui Ying Lee, Donghwi Kim, Romina Lee

Pacific Undergraduate Research and Creativity Conference (PURCC)

No abstract provided.

A Ferritin Nanoparticle-Based Zika Virus Vaccine Candidate Induces Robust Humoral And Cellular Immune Responses And Protects Mice From Lethal Virus Challenge, Aryamav Pattnaik, Bikash R. Sahoo, Lucas R. Struble, Gloria E. O. Borgstahl, You Zhou, Rodrigo Franco, Raul G. Barletta, Fernando A. Osorio, Thomas M. Petro, Asit K. Pattnaik

School of Veterinary and Biomedical Sciences: Faculty Publications

The severe consequences of the Zika virus (ZIKV) infections resulting in congenital Zika syndrome in infants and the autoimmune Guillain–Barre syndrome in adults warrant the development of safe and efficacious vaccines and therapeutics. Currently, there are no approved treatment options for ZIKV infection. Herein, we describe the development of a bacterial ferritin-based nanoparticle vaccine candidate for ZIKV. The viral envelope (E) protein domain III (DIII) was fused in-frame at the amino-terminus of ferritin. The resulting nanoparticle displaying the DIII was examined for its ability to induce immune responses and protect vaccinated animals upon lethal virus challenge. Our results show that …

Effects Of Pregnancy And Progesterone On Atrial Fibrillation, Heloisa M. Rutigliano

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Atrial Fibrillation (AF) is the most common cardiac arrythmia in adults with likely sex-specific risk factors. Female sex hormones may be important in modulating risk for atrial fibrillation. We hypothesize that pregnancy and progesterone (P4), a hormone found in high levels during pregnancy with abrupt withdrawal immediately after parturition, modulates AF susceptibility in female goats. Cardiac specific TGF-?1 transgenic female goats and age-matched wild-type (WT) female goats were utilized. Pacemakers were implanted in all animals for continuous arrhythmia monitoring and AF inducibility. AF inducibility was evaluated using 5 separate 10 s bursts of atrial pacing (160 - 200 ms). In …

Growing South Dakota (Spring 2023), College Of Agriculture, Food And Environmental Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 3 Developing Climate-Smart Beef and Bison Commodities
[Page] 5 Joseph Cassady Leads CAFES as New Dean
[Page] 7 Inaugural Class of Klingbeil Scholars
[Page] 9 Jackrabbits to Future Veterinarians
[Page] 11 Protecting South Dakota’s Grasslands
[Page] 13 Growing Youth Programs
[Page] 15 Partnerships for Positive Growth
[Page] 17 Building Highly Effective Boards
[Page] 19 SDSU Extension Podcasts
[Page] 21 Providing Good Food for All
[Page] 23 Improving Seed Varieties
[Page] 25 CAFES Endowed Positions
[Page] 29 Jackrabbits Now and Then

Pharmacokinetics Of Single Feeding Of Cannabidiol In Cattle: A Pilot Study, Haley Cornette

Honors College Theses

Cannabidiol (CBD) is a substance that has been used in complementary medicine for many years. However, modern medicine has little knowledge of how this substance is utilized and metabolized in ruminant animals. Regulations on quality assurance and use in animals are lacking, and CBD supplementation in livestock is not approved. If CBD supplements can be shown to be safe and effective, detection in the animal will be important for determining regulation of use. A withdrawal period can then be established to allow time for deterioration of product to safe levels before livestock products enter human markets. This study sought to …

Highly Pathogenic Avian Influenza A(H5n1) Virus Outbreak In New England Seals, United States, Wendy Puryear, Kaitlin Sawatzki, Nichola Hill, Alexa Foss, Jonathon J. Stone, Lynda Doughty, Dominique Walk, Katie Gilbert, Maureen Murray, Elena Cox, Priya Patel, Zak Mertz, Stephanie Ellis, Jennifer Taylor, Deborah Fauquier, Ainsley Smith, Robert A. Digiovanni, Adriana Van De Guchte, Ana Silvia Gonzalez-Reiche, Zain Khalil, Harm Van Bakel, Mia K. Torchetti, Kristina Lantz, Julianna B. Lenoch, Jonathan Runstadler

United States Department of Agriculture Wildlife Services: Staff Publications

We report the spillover of highly pathogenic avian influenza A(H5N1) into marine mammals in the northeastern United States, coincident with H5N1 in sympatric wild birds. Our data indicate monitoring both wild coastal birds and marine mammals will be critical to determine pandemic potential of influenza A viruses.

Time And Temperature Stability Of Tritrichomonas Foetus In Phosphate-Buffered Saline As Evaluated By A Reverse Transcription Real-Time Pcr Assay And Field Analysis, Duan S. Loy, Renata Spuri Gomes, Enakshy Dutta, Bruce W. Brodersen, John Dustin Loy

School of Veterinary and Biomedical Sciences: Faculty Publications

Tritrichomonas foetus (TF) is a significant reproductive pathogen of cattle, and sample collection, handling, transport, and testing are significant hurdles to surveillance programs. Recent methods have been developed that allow for the direct detection of TF using a reverse transcription real-time PCR (direct RT-qPCR) approach. To evaluate these methods, a comparative analysis was conducted to assess the technical performance of this assay with a commercially available real- time PCR (qPCR) assay. In addition, the evaluation of two types of collection media (PBS and TF transport tube) was conducted that evaluated sample stability from 0 to 3 days when stored at …

Epidemiological Survey Of Bovine Babesia And Theileria Parasites In Buffaloes In District Dera Ismail, Khyber Pakhtunkhwa, Waseem Ullah, Arsalan Khan, Akhtar Ali, Imtiaz Ali Shah, Umm E. Aimen, Imtiaz Khan, Abdul Wadood Jan, Saqib Ali Rustam

Journal of Bioresource Management

Piroplasmosis (babesiosis and theileriosis) are the leading blood parasites responsible for significant economic losses to the dairy enterprises. These parasites are transmitted by Ixodid ticks from a diseased animal to a healthy animal. This study was executed to determine the prevalence of Theileria and Babesia in water buffaloes in District Dera Ismail Khan for their risk assessment. During this trial, 350 random blood samples were obtained from buffalos within the region of District Dera Ismail Khan and examined for Babesia and Theileria parasites using Giemsa staining technique under an oil immersion lens. Forty-eight blood samples were found positive and the …

Disease Risk Of Reintroducing Primates Confiscated From The Illegal Wildlife Trade, Ana Patricia Mendoza Becerra

Dissertations

Zoonotic infections are easily shared between human and other primates, and thus primate trafficking poses a high risk of introducing zoonotic pathogens into urban environments as well as spreading human-associated diseases into natural environments when infected primates are released. The magnitude of these risks has not been thoroughly studied in the context of primate trafficking and rehabilitation of Neotropical primates. In this dissertation, I address some knowledge gaps in disease risk analysis of reintroducing trafficked primates. In chapter 1, I describe the dynamics, diversity, and composition of live wildlife trafficking in urban markets in Peru. I found these markets are …

Association Of IsvSa3 With Multidrug Resistance In Salmonella Enterica Isolates From Cattle (Bos Taurus), Gentry L. Lewis, Robert J. Fenton, Etsuko Moriyama, John Dustin Loy, Rodney A. Moxley

School of Veterinary and Biomedical Sciences: Faculty Publications

Salmonella enterica is, globally, an important cause of human illness with beef being a significant attributable source. In the human patient, systemic Salmonella infection requires antibiotic therapy, and when strains are multidrug resistant (MDR), no effective treatment may be available. MDR in bacteria is often associated with the presence of mobile genetic elements (MGE) that mediate horizontal spread of antimicrobial resistance (AMR) genes. In this study, we sought to determine the potential relationship of MDR in bovine Salmonella isolates with MGE. The present study involved 111 bovine Salmonella isolates obtained collectively from specimens derived from healthy cattle or their environments …

Comparison Of Two Diagnostic Assays For The Detection Of Serum Neutralizing Antibody To Porcine Epidemic Diarrhea Virus, Justin Brown, Korakrit Poonsuk, Ting-Yu Cheng, Chris Rademacher, Erin Kalkwarf, Liying Tian, Lauren A. Mckeen, Chong Wang, Luis Gimenez-Lirola, David Baum, Locke A. Karriker

School of Veterinary and Biomedical Sciences: Faculty Publications

Lactogenic immunity is important for the protection of piglets against many pathogens including porcine epidemic diarrhea virus. Circulating neutralizing antibodies levels in sow sera may help determine if a detectable immune response could confer protection to piglets. Neutralizing antibodies can be detected through various diagnostic assays. This study evaluated the diagnostic characteristics of two neutralizing antibody assays for porcine epidemic diarrhea virus neutralizing antibodies in serum of challenged gilts. Four treatment groups, control, non-vaccinated, vaccinated prior to challenge, and vaccinated following challenge, were comprised of 20 gilts. Serum sample were collected from each gilt prior to and following challenge with …

Comparison Of Two Diagnostic Assays For The Detection Of Serum Neutralizing Antibody To Porcine Epidemic Diarrhea Virus, Justin Brown, Korakrit Poonsuk, Ting-Yu Cheng, Chris Rademacher, Erin Kalkwarf, Liying Tian, Lauren A. Mckeen, Chong Wang, Luis Gimenez-Lirola, David Baum, Locke A. Karriker

School of Veterinary and Biomedical Sciences: Faculty Publications

Lactogenic immunity is important for the protection of piglets against many pathogens including porcine epidemic diarrhea virus. Circulating neutralizing antibodies levels in sow sera may help determine if a detectable immune response could confer protection to piglets. Neutralizing antibodies can be detected through various diagnostic assays. This study evaluated the diagnostic characteristics of two neutralizing antibody assays for porcine epidemic diarrhea virus neutralizing antibodies in serum of challenged gilts. Four treatment groups, control, non-vaccinated, vaccinated prior to challenge, and vaccinated following challenge, were comprised of 20 gilts. Serum sample were collected from each gilt prior to and following challenge with …

An Evaluation Of Avian Influenza Virus Whole-Genome Sequencing Approaches Using Nanopore Technology, Hon S. Ip, Sarah Uhm, Mary Lea Killian, Mia K. Torchetti

United States Department of Agriculture Wildlife Services: Staff Publications

As exemplified by the global response to the SARS-CoV-2 pandemic, whole-genome sequencing played an important role in monitoring the evolution of novel viral variants and provided guidance on potential antiviral treatments. The recent rapid and extensive introduction and spread of highly pathogenic avian influenza virus in Europe, North America, and elsewhere raises the need for similarly rapid sequencing to aid in appropriate response and mitigation activities. To facilitate this objective, we investigate a next-generation sequencing platform that uses a portable nanopore sequencing device to generate and present data in real time. This platform offers the potential to extend in-house sequencing …

Dynamic Fecal Microbiota Transfer From Mice With Western Diet-Induced Severe Colitis And Colon Tumorigenesis Did Not Exacerbate Colitis Symptoms Or Colon Tumorigenesis In Recipient Mice Fed Either The Ain93g Diet Or The Total Western Diet, Abby D. Benninghoff

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Consumption of the total Western diet (TWD) in mice has been shown to increase gut inflammation, promote colon tumorigenesis, and alter the fecal microbiome composition in mice as com-pared to mice fed a healthy diet, AIN93G (AIN). However, it is unclear whether the gut micro-biome contributes directly to colitis-associated CRC in this model. The objective of this study was to determine whether dynamic fecal microbiota transfer (FMT) from host mice fed either AIN or TWD basal diets would alter colitis symptoms or colitis-associated CRC in recipient mice, which were fed either AIN or TWD directly using a 2x2 factorial experiment …

Impacts Of Dietary Lysine And Crude Protein On Performance, Hepatic And Renal Functions, Biochemical Parameters, And Histomorphology Of Small Intestine, Liver, And Kidney In Broiler Chickens, Mohamed A Mousa, Ahamed S Asman, Reham M J Ali, Ramy K A Sayed, Kamlah A Majrashi, Rashed A Alhotan

Faculty, Staff and Student Publications

The present study aimed to investigate the effects of increasing dietary lysine (Lys) levels with an adequate dietary crude protein (CP) content, as well as the effects of a reduction in dietary CP content with the recommended amino acid (AAs) level, on the performance, blood biochemical parameters, and histomorphology of the duodenum, liver, and kidney in broiler chickens. A total of 500 broiler chickens were randomly distributed into five dietary treatment groups, following a completely randomized design, where, at the beginning, the control group (C) was fed a diet containing the standard CP and Lys levels: 23% CP with 1.44% …

Displaying And Delivering Viral Membrane Antigens Via Ww Domain–Activated Extracellular Vesicles, Sengjin Choi, Zhiping Yang, Qiyu Wang, Zhi Qiao, Maoyun Sun, Joshua Wiggins, Shi-Hua Xiang, Quan Lu

School of Veterinary and Biomedical Sciences: Faculty Publications

Membrane proteins expressed on the surface of enveloped viruses are conformational antigens readily recognized by B cells of the immune system. An effective vaccine would require the synthesis and delivery of these native conformational antigens in lipid membranes that preserve specific epitope structures. We have created an extracellular vesicle–based technology that allows viral membrane antigens to be selectively recruited onto the surface of WW domain–activated extracellular vesicles (WAEVs). Budding of WAEVs requires secretory carrier-associated membrane protein 3, which through its proline-proline-alanine-tyrosine motif interacts with WW domains to recruit fused viral membrane antigens onto WAEVs. Immunization with influenza and HIV viral …

Vaccines Against Group B Coxsackieviruses And Their Importance, Kiruthiga Mone, Ninaad Lasrado, Meghna Sur, Jay Reddy

School of Veterinary and Biomedical Sciences: Faculty Publications

The group B coxsackieviruses (CVBs) exist in six serotypes (CVB1 to CVB6). Disease associations have been reported for most serotypes, and multiple serotypes can cause similar diseases. For example, CVB1, CVB3, and CVB5 are generally implicated in the causation of myocarditis, whereas CVB1 and CVB4 could accelerate the development of type 1 diabetes (T1D). Yet, no vaccines against these viruses are currently available. In this review, we have analyzed the attributes of experimentally tested vaccines and discussed their merits and demerits or limitations, as well as their impact in preventing infections, most importantly myocarditis and T1D.

Personalized Matched Targeted Therapy In Advanced Pancreatic Cancer: A Pilot Cohort Analysis, Justin Shaya, Shumei Kato, Jacob J. Adashek, Hitendra Patel, Paul T. Fanta, Gregory P. Botta, Jason K. Sicklick, Razelle Kurzrock

School of Veterinary and Biomedical Sciences: Faculty Publications

Despite progress, 2-year pancreatic cancer survival remains dismal. We evaluated a biomarker-driven, combination/N-of-one strategy in 18 patients (advanced/metastatic pancreatic cancer) (from Molecular Tumor Board). Targeted agents administered/ patient = 2.5 (median) (range, 1–4); first-line therapy (N = 5); second line, (N = 13). Comparing patients (high versus low degrees of matching) (matching score ≥50% versus <50%; reflecting number of alterations matched to targeted agents divided by number of pathogenic alterations), survival was significantly longer (hazard ratio [HR] 0.24 (95% confidence interval [CI], 0.078–0.76, P = 0.016); clinical benefit rates (CBR) (stable disease ≥6 months/partial/complete response) trended higher (45.5 vs 0.0%, P = 0.10); progression-free survival, HR, 95% CI, 0.36 (0.12–1.10) (p = 0.075). First versus ≥2nd-line therapy had higher CBRs (80.0 vs 7.7%, P = …

Whole Genome Sequencing For Identification Of Putative Causative Alleles For Hemochromatosis In Horses, Anna M. Rauber-Ramos

Schultz-Werth Award Papers

Hemochromatosis is liver disorder in which excess iron is stored in the liver, leading to iron overload and extensive liver damage that can prove fatal. Based on human precedence, a genetic cause for idiopathic hemochromatosis in horses is suspected. Two horses with hemochromatosis were whole genome sequenced, with variants in candidate genes prioritized in analyses of potential pathogenicity. No clear putative variants were found to be present in both horses, suggesting an etiology more complex than the initially suspected Mendelian inheritance. A heterozygous nonsense mutation in STEAP3 metalloreductase (STEAP3) was identified as a potential contributor to hemochromatosis in one of …

Impact Of Pistachio Shell Biochar In Finishing Beef Cattle Diets, Levi J. Mcphillips, Mitchell M. Norman, J. L. Sperber, Andrea K. Watson, Galen E. Erickson

Nebraska Beef Cattle Reports

A 190-day finishing experiment was conducted to evaluate effects of feeding biochar on methane and carbon dioxide production, animal performance and carcass traits in beef steers. A high concentrate feedlot diet was used, and two dietary treatments were compared, 0 or 1% biochar as % of diet dry matter. Cattle were monitored using a calorimetry emissions barn to quantify production of methane and carbon dioxide. There were no differences in emissions, performance, or carcass characteristics for cattle fed the control diet or with biochar supplemented into the diet.

2023 Nebraska Beef Cattle Report

Nebraska Beef Cattle Reports

Cow-Calf Management

• Comparison of Semi-confined and Pasture-based August Calving Beef Cow Systems
• Including Gene Edited Sires in Genetic Evaluations
• Impact of Planning Horizon Length on Breeding Objectives and Resulting Selection Decisions
• Effect of Increasing Energy 30 days Prior to Artificial Insemination in Beef Heifers
• Extending Melengestrol Acetate Treatment from Fourteen to Eighteen Days in Beef Heifers
• Artificial Insemination of Beef Heifers with Multi-Sire Sexed Semen

Growing Calf and Yearling Management

• Timing of Implant Use in the Backgrounding System
• Effects of Strategic Supplementation on Return to Management and Performance of Yearling Cattle

Forage Evaluation

• Forage Evaluation of Crested Wheatgrass
• Evaluation of …

Analysis Of Spoilage Bacteria Present In Vacuum Packaged Chilled Beef Treated With Organic Acids, Samuel C. Watson, Rebecca A. Furbeck, Byron D. Chaves, Samodha C. Fernando, Gary Sullivan

Nebraska Beef Cattle Reports

Preventing the spoilage of fresh, chilled beef is crucial for maintaining market value. Since organic acids are regularly used in the beef industry for pathogen control, their ability to improve the shelf life of fresh, chilled beef was evaluated. Fresh, chilled beef was individually treated with 4.5% lactic acid, 2.5% Beefxide^®, or 380 ppm peroxyacetic acid. After storage, Lactococcus, a genus of lactic acid bacteria, became the most common spoilage organism across all treatment and control samples. Organic acid treatments were not able to slow the growth of this genus and may not be an effective method to …

Greenhouse Gas Emissions From Two Beef Systems From Birth To Slaughter In Eastern Nebraska, Levi J. Mcphillips, Zac E. Carlson, Andrew E. Suyker, J. C. Macdonald, Tala Awada, Jane Okalebo, Shree Dangal, Rick R. Stowell, Andrea K. Watson, Galen E. Erickson

Nebraska Beef Cattle Reports

Methane emissions from growing and finishing calves born into a spring calving, conventional cow system or a summer calving, partially-confined cow system were compared. Cows fed a restricted diet of corn-byproduct and grain residues in confinement produced less methane and carbon dioxide per day compared to cows grazing pasture or cover crop. Calves weaned from the confinement-based production system were smaller at weaning and compensated with greater gain during the growing phase. More days on feed in the finishing phase were needed for the calves from the confinement system to reach same backfat thickness. Over the entire growing and finishing …

Ponderosa Pine Wood Biochar Used As An Emissions Reduction Strategy In A Finishing Beef Cattle Diet, Holly A. Heil, Braden C. Troyer, Mitchell M. Norman, Andrea K. Watson, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing feedlot experiment was conducted to evaluate the impact of feeding biochar on methane and carbon dioxide production, performance, and carcass characteristics in beef cattle. Two dietary treatments were evaluated; 0 or 1% biochar in a high concentrate diet comprised of dry-rolled corn, high moisture corn, Sweet Bran, and corn silage. Ponderosa pine wood biochar was added into the diet at 1% dry-matter displacing a 1% dry-matter blend of corn. Cattle were monitored using a calorimetry emissions barn to capture methane and carbon dioxide production. Emissions production, performance and carcass characteristics did not differ between cattle fed a control …

Effect Of Alga Bio 1.0 On Reducing Enteric Methane Emission From Cattle, Reba L. Conlin, Kassidy K. Buse, Andrea K. Watson, Galen E. Erickson, Paul J. Kononoff

Nebraska Beef Cattle Reports

An experiment was conducted to determine the effect of Alga Bio 1.0 inclusion on methane and carbon dioxide emissions along with diet digestibility. Three treatments were evaluated with 0, 69, and 103 grams per day Alga Bio 1.0 fed as a top dress in a corn-based diet. Indirect calorimetry headboxes were utilized to evaluate gas production with 12 cows in 4 replicated 3x3 Latin squares. There was a 39% reduction in methane per lb of dry matter intake for cattle fed 69 g of Alga Bio 1.0 and 63% reduction when cattle were fed 103 g of Alga Bio 1.0 …

Effects Of Corn Processing And Silage Inclusion In Feedlot Diets On Steer Performance, Jessica L. Miller, Nolan R. Meier, K. H. Jenkins Pas, Galen E. Erickson, Pablo L. Loza

Nebraska Beef Cattle Reports

A feelot study compared the effects of corn silage inclusion on steer performance and carcass characteristics withing dry-rolled corn diets and steam-flaked corn diets. Treatments included four corn silage inclusions as 0, 15, 30, 45% of dry matter in both steam-flaked corn and dry-rolled corn base diets. Feeding a steam-flaked based corn diet increased average daily gain by 7.8% and improved feed conversion by 6.8% when compared to steers fed a dry-rolled corn diet. As corn silage inclusion increased, feed conversion increased linearly. When fed to the same days on feed carcass adjusted final body weight, hot carcass weight, and …

Effect Of Enogen Feed Corn Inclusion In Conventional And Natural Finishing Cattle Diets, Jessica Miller, K. H. Jenkins Pas, Galen E. Erickson, Pablo L. Loza

Nebraska Beef Cattle Reports

Increasing the extent of starch digestibility during finishing could allow producers to improve cattle efficiency. A finishing performance study was conducted to determine the effect of Enogen Feed Corn inclusion as dry-rolled corn and corn silage in comparison to a control corn hybrid within natural and conventional feeding programs for heifers and steers. Cattle in the conventional feeding program received implants and the ration included feed additives, while cattle on the natural program were not implanted and the ration did not contain feed additives. The inclusion of Enogen Feed Corn had no impact on steer or heifer finishing performance. The …

Effect Of Corn Processing On Steer Performance And Fecal Starch Content, Jessica L. Miller, Braden C. Troyer, Levi J. Mcphillips, Mitchell M. Norman, J. C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

Processing corn as high-moisture corn increases starch digestion and improves cattle efficiency when fed blended with dry rolled corn in finishing rations. A finishing study evaluated the effect of corn processing method (dry-rolled corn or 2:1) high-moisture corn to dry rolled corn blend) on performance of calf-fed steers. Corn processing method did not affect average daily gain; however, steers fed a high-moisture corn and dry-rolled corn blend consumed 1.1 lb/day less than steers fed a dry-rolled corn diet. Feeding high-moisture corn and dry-rolled corn blend diets improved feed efficiency by 5.2% compared to steers fed dry-rolled corn. Fecal starch content …

Supplemental Lysine In Finishing Cattle Diets, Hanna Cronk, Zac Carlson, Mitch Norman, Levi Mcphillips, Andrea Watson, Galen E. Erickson, Gary Ducharme

Nebraska Beef Cattle Reports

The objective of this experiment was to evaluate the effects of increasing lysine supply in finishing beef cattle diets. Crossbreed steers (n=120, BW=577 ± 2 lb) were individually fed using a Calen Gate system for 195 days. Animals received a common finishing diet (63% corn, 15% corn silage and 15% distillers grains) with 0, 1, 2, 3, 4, 5, 6, or 7 g per day of supplemental rumen bypass lysine. High levels of lysine (5 or more g per day) in the diet decreased dry matter intake, carcass adjusted body weight with no impact on carcass adjusted feed efficiency. Hot …

Impact Of Removing 20% Distillers Grain After One-Third Or Two-Thirds Of The Feeding Period On Performance Of Finishing Yearling, Sofia Suarez Lorences, Braden C. Troyer, Mitch M. Norman, Pablo L. Loza, Rick Stock, J. C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing study evaluated the effect of removing modified distillers grains plus solubles after one-third or two-thirds of the feeding period on performance and carcass characteristics of yearling steers. Treatment diets included 20% modified distillers for the entire feeding period; 20% modified distillers for two-thirds of the feeding period and then 0%; and 20% modified distillers for one-third of the feeding period, then 0%. Removing modified distillers from the diet decreased average daily gain, final body weight and dry matter intake and tended to increase feed conversion. Cattle fed 20% modified distillers throughout the entire feeding period had greatest hot …