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Cattle Industry Funding Scheme Annual Report 2016/2017, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

In June 2010 the Cattle Industry Funding Scheme (IFS) was introduced to address biosecurity threats relevant to the Western Australian (WA) cattle industry. The Scheme was established under the Biosecurity and Agriculture Management Act 2007 to enable cattle producers to identify the pest and disease priorities at a whole-of-industry level and to raise funds for activities to address these priorities.

There are currently three Industry Funding Schemes in operation. In addition to the Cattle IFS, there is a Sheep and Goat IFS and a Grains, Seeds and Hay IFS. The three IFSs operate in a similar manner.

The purpose of …

Serum Blood Metabolite Response And Evaluation Of Select Organ Weight, Histology, And Cardiac Morphology Of Beef Heifers Exposed To A Dual Corticotropin-Releasing Hormone And Vasopressin Challenge Following Supplementation Of Zilpaterol Hydrochloride1,2, J. O. Buntyn, David J. Steffen, N. C. Burdick Sanchez, S. E. Sieren, S. J. Jones, Galen E. Erickson, J. A. Carroll, Ty B. Schmidt

Department of Animal Science: Faculty Publications

The objectives of this study were 1) to determine if supplementation of zilpaterol hydrochloride (ZH) altered select organ weights, histology, and cardiac anatomical features at harvest and 2) to determine if administration of a corticotropin-releasing hormone (CRH) and vasopressin (VP) challenge following 20 d of ZH supplementation altered the blood chemistry profile in cattle. Crossbred heifers (n = 20; 556 ± 7 kg BW) were randomized into 2 treatment groups: 1) control (CON), without ZH, and 2) zilpaterol (ZIL; ZH at 8.33 mg/kg [DM basis] for 20 d). On d 20 of supplementation, heifers were fitted with indwelling jugular …

Pituitary Genomic Expression Profiles Of Steers Are Altered By Grazing Of High Vs. Low Endophyte-Infected Tall Fescue Forages, Qing Li, Raquel Hegge, Phillip J. Bridges, James C. Matthews

Animal and Food Sciences Faculty Publications

Consumption of ergot alkaloid-containing tall fescue grass impairs several metabolic, vascular, growth, and reproductive processes in cattle, collectively producing a clinical condition known as “fescue toxicosis.” Despite the apparent association between pituitary function and these physiological parameters, including depressed serum prolactin; no reports describe the effect of fescue toxicosis on pituitary genomic expression profiles. To identify candidate regulatory mechanisms, we compared the global and selected targeted mRNA expression patterns of pituitaries collected from beef steers that had been randomly assigned to undergo summer-long grazing (89 to 105 d) of a high-toxic endophyte-infected tall fescue pasture (HE; 0.746 μg/g ergot alkaloids; …

A Comparative Analysis Of The Nutrient Composition And Digestibility Of California Perennial And Annual Grasses At Four Stages Of Growth, Elaina Cromer

Master's Theses

Beef products represent the fourth largest agricultural commodity in the state of California, valuing more than $3 billion from 2013 to 2015 (CDFA, 2016) and procure 90% of the income for the range livestock industry (FRAP, 2003). Forages found on California’s coastal, desert, foothill, and mountain ranges are the basis of the state’s beef cattle industry. Understanding their nutritional quality of these forages is important for their effective use (George et al., 2001a; Waterman et al., 2014). The objectives of this research were to investigate the nutritional characteristics, and in situ digestbilities in Angus beef cattle, of common California annual …

Assessing Plant-Wax Markers As A Tool To Estimate Intake And Diet Composition In Beef Cattle, Emily J. Hilburger

Department of Animal Science: Dissertations, Theses, and Student Research

Estimating feed efficiency of ruminants in grazing environments is difficult due to challenges in measuring intake and diet composition of animals that are freely grazing. Plant-wax markers, especially n-alkanes (ALK), have been shown to be a potential tool to calculate intake and diet composition.

Two indoor experiments were conducted in successive years to assess ALK reliability to facilely estimate DMI (EDMI) and diet composition. Heifers were fed a ration of 69.8% corn silage and 30% ground alfalfa with a daily supplement containing a ALK marker (C₃₂). Using a pooled fecal sample increased the …

Utilizing Pregnancy Associated Glycoproteins To Improve Reproductive Efficiency In Cattle, Sydney Taylor Reese

Masters Theses

Diagnosing and maintaining successful pregnancies are one of the most important components to profitable and efficient management of beef and dairy cattle operations. Pregnancy loss is a major component of reproductive inefficiency and has been investigated less intensively in beef cattle than in dairy cattle. Pregnancy Associate Glycoproteins [PAGs] are placental products which have been identified as an accurate tool for pregnancy diagnosis and as substantial evidence indicates, markers of embryo and placental competence. The aim of these two studies is to further distinguish characteristics of pregnancies based on PAG concentration. Serial embryo transfer was used in beef heifers to …

Use Of Byproducts In Forage-Based, Post-Weaning Beef Systems And Effects Of Serial Slaughter On Performance And Profitability, Robert G. Bondurant Jr.

Department of Animal Science: Dissertations, Theses, and Student Research

Crude glycerin was included in high-forage beef growing diets at 0, 4, 8, and 12% diet DM to determine the effect on fiber digestion by evaluating changes in microbial species abundance, NDF digestibility, and VFA concentrations. Total tract NDF digestibility decreased with increasing inclusion of GLY in high-forage diets. However, there was no decrease in in situ NDF digestibility and Fibrobacter succinogenes microbial populations were unaffected, indicating that fiber digestion was not directly affected by inclusion of GLY. Acetate decreased while propionate and butyrate VFA proportions increased as GLY increased.

Spayed heifers were utilized in a 2-yr study to evaluate …

Progesterone Receptor And Prostaglandins Mediate Luteinizing Hormone-Induced Changes In Messenger Rnas For Adamts Proteases In Theca Cells Of Bovine Periovulatory Follicles, Erin L. Willis, Phillip J. Bridges, Joanne E. Fortune

Animal and Food Sciences Faculty Publications

Little is known about the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) family of extracellular proteases in ovarian follicles of non‐rodent species, particularly in theca cells. In the present study, temporal changes in the abundance of mRNA encoding four ADAMTS subtypes and hormonal regulation of mRNA encoding two subtypes were investigated in theca interna cells during the periovulatory period in cattle. Gonadotropin‐releasing hormone (GnRH) was injected into animals to induce a luteinizing hormone (LH)/follicle‐stimulating hormone (FSH) surge, and follicles were obtained at 0 hr post‐GnRH (preovulatory) or at 6, 12, 18, or 24 hr (periovulatory). ADAMTS1, ‐2, …

Evaluating A New Shade For Feedlot Cattle Performance And Heat Stress, Morgan D. Hayes, Tami M. Brown-Brandl, Roger A. Eigenberg, Larry A. Kuehn, R. Mark Thallman

Biosystems and Agricultural Engineering Faculty Publications

Heat stress in cattle results in decreased feed intake, lower daily gain, and potentially death in susceptible animals under intense conditions. A study was carried out during the summer of 2013 at the USDA-ARS U.S. Meat Animal Research Center feedlot evaluating the impact of shade on environmental conditions and cattle performance. A novel two-tiered shade was used in half of the 14 pens, each holding 30 animals. The shades were designed to reduce solar heat load by 40% to 60% and to provide traveling shade across the pen, providing varied amounts of shade area as well as varied solar reduction …

Expression Of Cytokine Genes And Receptors In White Blood Cells Associated With Divergent Body Weight Gain In Beef Steers, Amanda K. Lindholm-Perry, Virginia M. Cederberg, Jeremy R. Miles, Andrew P. Foote

Department of Animal Science: Faculty Publications

Previous work examining the transcriptome of steer tissue samples from animals with divergent gain have shown a relationship with the expression of genes with functions in immune and inflammatory pathways. The process of mounting an immune or inflammatory response is energetically expensive and variation in cytokine responses may affect cattle production traits. In addition, a previous study has identified variation in the transcript abundance of numerous genes, including the cytokine gene IL6ST, in the circulating white blood cells of pigs associated with high and low residual feed intake (RFI) lines. The aim of this study was to determine whether …

Lysine Bioavailability Of Two Lipid Coated Lysine Products After Exposure To Silages With Different Acidity, Jessica N. Reiners

Electronic Theses and Dissertations

Three experiments were conducted to determine bioavailability of 2 lipid coated Lys products (EB and EC). In an initial experiment, Lys disassociation from 2 lipid coated Lys products was best described by a first-order kinetic model after incubation in alfalfa- or corn-silage at 2 different amounts of acidity. Greater amounts of Lys immediately disassociated from EC (15.7%) than EB (4.9%; P < 0.05). Lysine that initially disassociated in corn silage at low pH (0.5%) was less than corn silage at a more neutral pH (18.7%), whereas Lys that initially disassociated in alfalfa silage was not affected (P = 0.26) by pH. Lysine that slowly disassociated from lipid coated Lys differed by product (P = 0.01), and acidity (P < 0.01) affected amounts of Lys that slowly disassociated differently within alfalfa- or corn-silage (pH × silage = 0.02). Greater amounts of Lys disassociated from acidic corn silage (79%) than neutral corn silage (32%; P = 0.01). However, amounts of Lys that slowly disassociated from alfalfa silage was not impacted by acidity (P = 0.40). Additionally, amounts of Lys that did not disassociate (P < 0.04) within 24 h were greater (P < 0.04) when lipid coated Lys was mixed with neutral silages (44%) compared to acidic silages (21%). However, rate of Lys disassociation from lipid coated Lys products was not affected by acidity or exposure to alfalfa- or corn-silage (P = 0.21). In a second experiment, we measured in vitro ammonia release from EB and EC after mixing with alfalfa- or corn-silage at different amounts of acidity with or without monensin. Ammonia release from Lys increased (Quadratic < 0.01) with greater amounts of time; however, differences between in vitro cultures with added Lys and negative control were not detected until 36 h of incubation. By 36 h, all cultures containing added Lys were greater than the negative control. After 42 h of incubation, ammonia release from Lys was greatest from EC and when lipid and Lys-HCl in amounts identical to EB were provided to cultures; EB, Lys-HCl, and lipid and Lys in amounts identical to EC were intermediate. After 48 h of incubation, ammonia release from Lys in EB was greatest and Lys-HCl was least, but EC and amounts of lipid and Lys-HCl identical to either EB or EC were intermediate. Ammonia release from Lys were less from cultures containing monensin after 48 h of incubation. In experiment 3, 9 white-faced ewes (70.1 ± 5.2 kg BW; 5.3 ± 0.6 yr) were used to measure Lys bioavailability by a slope-ratio analysis from 2 lipid coated Lys products and Lys-HCl after mixing in corn silage. Plasma Lys concentrations increased (Linear < 0.01) in response to abomasal infusion of Lys, and bioavailability of EB, EC, and Lys- HCl were calculated to be 10.74%, 18.82%, and 11.87%, respectively. However, increases in plasma Lys from EB (Linear = 0.41) and Lys-HCl (Linear = 0.36) were not different from plasma Lys supported by diet alone, but the rate of increase in plasma Lys in response to EC tended (Linear = 0.15) to be greater than plasma Lys levels from diet. Evidently, manufacturing method among lipid coated Lys products as well as physical and chemical characteristics of diet can impact availability of Lys from lipid coated Lys products.

Effect Of Grazing Pressure On Cattle Grazing Cool Season Annual Forages, Brooke Brunsvig

Electronic Theses and Dissertations

Ruminants can use plant fiber to produce food products that provide nourishment to humans. However, a precise understanding of specific plants selected by grazing ruminants remains elusive. Many long- and short-term factors impact cattle grazing behavior. Ultimately, grazing behavior can affect forage available for grazing, nutrient density of forage, dry matter intake, and animal performance. A myriad of grazing management strategies have been developed utilizing animal behavior to allow more efficient use of forage resources. Many management strategies based on manipulation of grazing behavior are simple and cost effective. Optimal performance of individual animals and amount of animal products produced …

Detection Of High Levels Of Somatic Cells In Milk On Farms Equippedwith An Automatic Milking System By Decision Trees Technique, Beata Sitkowska, Dariusz Piwczynski, Joanna Aerts, Magdalena Kolenda, Serkan Özkaya

Turkish Journal of Veterinary & Animal Sciences

The purpose of the study was to use decision trees to predict increased levels of somatic cells in cow's milk. The material for the study comprised data collected in 2012-2014 from five farms in Poland equipped with an automatic milking system. Data on 803 Polish Holstein-Friesian cows were collected. In order to predict somatic cell count data mining techniques were used to build a graphical model of a decision tree. This study found that the most important factors to anticipate an elevated somatic cell count in cow's milk are milk conductivity, lactation stage, and lactation (primiparous and multiparous cow groups), …

Identification And Genetic Characterization Of Bovine Parainfluenzavirus Type 3 Genotype C Strain Isolated From Cattle In Western China, Xiaobo Wen, Jinhua Sun, Yao Zhang, Si Cao, Xuhua Ran, Hongbo Ni

Turkish Journal of Veterinary & Animal Sciences

Bovine parainfluenza virus type 3 (BPIV3) is a leading respiratory pathogen of cattle and is often implicated as a causative pathogen of bovine respiratory disease complex (BRDC). Three genotypes (BPIV3a-c) have been tentatively classified based on genetic and phylogenetic analyses. A BPIV3c isolate, designated NX49, was isolated using the Madin-Darby bovine kidney cell culture from cattle in western China, where feedlot cattle with severe respiratory disease symptoms were observed. Hemagglutination assay demonstrated that NX49 had low agglutination activity against guinea pig erythrocytes, whereas SD0835, the first BPIV3c strain reported in China, showed high agglutination activity. Phylogenic analysis indicated that NX49 …

Pathological And Immunohistochemical Evaluation Of Skin And Teat Papillomas In Cattle, Enver Beytut

Turkish Journal of Veterinary & Animal Sciences

Bovine skin and teat papillomas were examined for immunohistochemical expression of bovine papillomavirus (BPV), proliferating antigens (PCNA, Ki-67), CD3+ T lymphocytes, and some of the type III intermediate filaments. Papillomas showed epidermal hyperplasia, koilocytes, and hyperkeratosis with prominent dermal connective tissue. Immunohistochemistry found the presence of BPV antigens in the nuclei of granulosa cells. PCNA and Ki-67 revealed positive nuclear staining in the dermis and epidermis. Perivascular cuffing in the dermis predominantly consisted of CD3+ T cells. Immunoreaction to vimentin was strong in the connective tissue of the dermis. $\alpha$SMA positivity was mainly in the media of vessels. Smooth muscle …

A Survey Of Ixodid Ticks Feeding On Cattle And Molecular Detectionof Coxiella Burnetii From Ticks In Southeast Iran, Omid Ghashghaei, Saeid Reza Nourollahi Fard, Mohammad Khalili, Hamid Sharifi

Turkish Journal of Veterinary & Animal Sciences

Ticks are the main hematophagous arthropods and obligatory ectoparasites that are considered a vector of serious pathogens for animals and humans. The aims of the present survey were to assess the prevalence and diversity of ticks in cattle in Southeast Iran and to determine Coxiella burnetii in the ticks. From May 2014 to April 2015, 583 ticks were collected randomly from 257 cattle. Nested trans-PCR was performed to detect C. burnetii. The overall prevalence of hard tick infestation on cattle was 56.8%. In total, seven different species were identified: Rhipicephalus sanguineus sensu lato (32.6%), Hyalomma anatolicum (28.8%), Hyalomma excavatum (19%), …

Twenty-Four Hour Holter Monitoring In Finishing Cattle Housed Outdoors, D. A. Frese, J. D. Thomason, C. D. Reinhardt, S. J. Bartle, D. N. Rethorst, G. H. Loneragan, E. F. Schwandt, D. U. Thomson

Kansas Agricultural Experiment Station Research Reports

Ambulatory electrocardiogram monitoring, in the form of Holter monitoring, has been used in human and veterinary medicine for decades as an aid in the diagnosis and determination of appropriate therapy of heart rhythm disturbances. Within veterinary medicine, Holter monitors have been primarily used in companion animal species, yet little attention has been given to food animal species. Moreover, the heart rhythm in clinically normal cattle fed high concentrate diets and housed outdoors in confined drylot facilities has not been previously reported. In order to properly identify pathologic arrhythmias in cattle, the normal rhythm and arrhythmia prevalence in healthy cattle should …

Liver Abscess Severity At Slaughter Does Not Affect Meat Tenderness And Sensory Attributes In Commercially Finished Beef Cattle Fed Without Tylosin Phosphate, E. J. Mccoy, T. G. O'Quinn, E. F. Schwandt, C. D. Reinhardt, D. U. Thomson

Kansas Agricultural Experiment Station Research Reports

Liver abscesses are a significant problem in the United States’ cattle feeding industry, costing the industry an estimated $15.9 million annually in liver condemnation, trim losses, and reduced carcass weights and quality grades. Recent reported incidence rates of liver abscesses at slaughter range from 10 to 20%. Liver abscess incidence may be influenced by a number of factors including: breed, gender, diet, days on feed, cattle type, season, and geographical location. Liver abscesses typically occur secondary to rumen insults caused by acidosis or rumenitis. It has been proposed that pathogens associated with liver abscess formation enter the blood stream through …

Searc Agricultural Research 2017, L. W. Lomas

Kansas Agricultural Experiment Station Research Reports

Southeast Agricultural Research Center, Agricultural Research 2017. Topics include grazing and supplemental feed for beef cattle, forage, pasture, hay, grasses, legumes, tillage, fertilizer, corn, soybeans, wheat, and soil health and variability.

Genetic Polymorphisms Of The Glucocorticoid Receptor And Interleulin-8 Receptor Genes And Their Relationship To Production Traits And Hair Coat Scores In Crossbred Cattle, Avery B. Deaton, Laura Meyer, Jeremy Powell, Charles F. Rosenkrans Jr.

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Little is understood about how the diversity of genes, specifically the glucocorticoid receptor (GR) and interleukin-8 receptor (CXCR2), are related to reproductive health and how this affects physical traits in cattle. Glucocorticoid receptors have been positively associated with higher milk yields, lactose content, feed intake, and feed conversion rates. Interleukin-8 genes are part of the innate immune response and help with many aspects of female reproductive health, such as protecting the embryo from the maternal immune system during pregnancy. The objective of this research was to identify polymorphisms in the GR and CXCR2 genes and to associate genotypes between the …

Differences In Efficacy Between Gamithromycin, Tilmicosin, And Tulathromycin As Metaphylactic Treatments In High Risk Calves For Bovine Respiratory Disease, T. Miller, M. E. Hubbert, E. F. Schwandt, D. U. Thomson, C. D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

The cost of Bovine Respiratory Disease to the beef industry due to death, poorer conversions, and therapy is estimated to cost more than $3 billion per year. Identifying and mitigating Bovine Respiratory Disease in cattle can be difficult due to the increased susceptibility for Bovine Respiratory Disease in high risk cattle. One management option to minimize an outbreak of respiratory disease is the use of metaphylaxis, the mass treatment of a group of calves to reduce the incidence and adverse effects of respiratory disease on high risk animals. Criteria used to determine the necessity of metaphylactic treatment against Bovine Respiratory …

Prevalence Of Horns In A Pen Does Not Affect Incidence Of Carcass Bruising In Feedlot Cattle, M. E. Youngers, E. F. Schwandt, D. U. Thomson, J. C. Simroth, S. J. Bartle, M Siemens, C. D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Disbudding and dehorning are two common practices done to remove horns from cattle to prevent injury to handlers and other cattle and to reduce bruising of carcasses. Bruised carcasses result in substantial reduction in profit due to trim loss, increased sanitation risk, and loss in time on the rail during processing. Previous research has indicated that cattle with horns increased hide damage of cohorts and caused injury to handlers. Cattle with horns cause circular shaped bruises that lead to trim loss due to bruising. Cattle with tipped horns do not have a lower bruising rate than cattle with intact horns. …

Comparison Of Four Ultrasonographic Approaches For The Diagnosis Ofacquired Reticular Diaphragmatic Hernia In Bovidae, Ashwani Kumar, Vandana Sangwan, Jitender Mohindroo, Narinder Singh Saini, Simrat Sagar Singh

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to look at four ultrasonographic approaches that diagnose acquired reticular diaphragmatic hernia (RDH) using either left or right caudal thoracic approaches (4th/5th intercostal space) and compare them to those made more cranially (1st/2nd intercostal space). Each sonographic observation was made in 27 unsedated, standing animals (22 buffaloes and 5 cattle) that were surgically confirmed for RDH. Using the right caudal thoracic approach, the herniated reticulum was seen as medial to the thoracic wall at a depth of 3-5 cm and adjacent to the cardiac silhouette. With the left caudal thoracic approach, the herniated reticulum …

Growing Yeast For Livestock, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Over 500,000 tons of organic materials such as food scraps are disposed of each year in Wisconsin. A large percentage of this material could be composted or turned into useful products.5 The purpose of this article is to educate farmers and organizations on how to turn food waste into a high value food source for livestock. Yeast can be grown at any time of the year without the large inputs of agricultural chemicals and machinery that is common with other feed production methods. A yeast growing facility can be scalable to any size the producer wants such as a small …