Animal Sciences Commons^™

2021 Nebraska Beef Cattle Report

Nebraska Beef Cattle Reports

Cow-Calf Nutrition and Management: Metabolic Profile Associated with Pre-Breeding Puberty Status in Range Beef Heifers 5 • Milk Production Impacts on Cow Reproductive and Calf Growth Performance 8 • Genetic Selection Tools: Using Pooling to Capture Commercial Data for Inclusion in Genetic Evaluations 11 • Categorization of Birth Weight Phenotypes for Inclusion in Genetic Evaluations Using a Deep Neural Network 14 • Genetic Parameter Estimates for Age at Slaughter and Days to Finish in a Multibreed Population 16

Growing Calf and Yearling Management: Effects of Monensin and Protein Type on Performance of Yearling Steers Grazing Smooth Bromegrass Pastures 18 • …

Genetic Variation In The Bovine Myogenic Determination Factor 1 (G.782g>Apolymorphism) And Its Influence On Carcass Traits In Turkish Grey Steppe Cattle, Sena Ardiçli, Özden Çobanoğlu

Turkish Journal of Veterinary & Animal Sciences

MyoD1 gene is a member of the myogenic differentiation gene family, which plays a crucial role in growth and development. There is a lack of information about the MyoD1variants and their phenotypic influences in Turkish Grey Steppe cattle. Therefore the present study aimed to determine the genetic variability of MyoD1 g.782G>A polymorphism and to evaluate its effects on carcass characteristics in Turkish Grey Steppe cattle. Analyses were conducted on a total of 142 Turkish Grey Steppe bulls. The PCR-RFLP technique was used for genotyping of the g.782G>A polymorphism in exon 1 of the MyoD1 gene. The population genetic …

Cattle Industry Funding Scheme Annual Report 2019/2020, 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 …

Novel Heat Index Models For Subtropical Region Based On Daily Milk Production Incrossbred Holstein Cows, Neeraj Kashyap, Atish Kumar Chakravarty, Bharti Deshmukh

Turkish Journal of Veterinary & Animal Sciences

The quantification of the effect of heat stress imposed due to higher rate of heat gain on animal production is a prerequisite while estimating effects of heat stress. Temperature humidity index (THI) models developed empirically using meteorological parameters have been utilized as an indicator of heat stress. This study attempted to develop a heat index model with respect to productivity of the crossbred Holstein cows. More than 1.23 million daily milk yield records of 1860 crossbred cattle spread over a duration of 30 years were utilized. Statistically significant (p < 0.0001) partial regression coefficients were estimated as 0.0748 ± 0.0009 for dry bulb temperature (T$_{db}$) and -0.2228 ± 0.0011 for wet bulb temperature in model 1, -0.0182 ± 0.0005 T$_{db}$ and -0.1205 ± 0.0006 for vapour pressure in model 2, -0.0150 ± 0.0006 for Tdb and -0.1151 ± 0.0006 for dew point temperature in model 3 while as -0.1283 ± 0.0004 for T$_{db}$ and -0.0394 ± 0.0002 for relative humidity in model 4. The ratio of the partial regression coefficients of meteorological parameters (ß2/ß1) was -2.9791 in model 1, 6.8739 in model 2, 7.6731 in model 3 and 0.3073 in model 4. The developed THI models are based on the effect of meteorological parameters on daily productivity of the dairy animals, so the weightages to meteorological parameters were contrastingly different than the reported THI models. These models may successfully be used to evaluate the impact of heat stress on crossbred Holstein cows with respect to milk productivity and many other traits.

In Vitro Gas Production And Fatty Acids Biohydrogenation Of Diets Containing Different Unsaturated Fatty Acids Sources Plus Crude Glycerin, Arturo Samuel Gomez Insuasti, Yury Tatiana Granja-Salcedo, Julian Andres Castillo Vargas, Juliana Duarte Messana, Ana Paula De Oliveira Sader, Telma Teresinha Berchielli

Turkish Journal of Veterinary & Animal Sciences

An in vitro trial was conducted to evaluate the effects of different unsaturated fatty acids (UFA) sources plus crude glycerin (CGL) on gas production and rumen biohydrogenation (RBH). Incubated diet corresponded to diets containing corn silage (30%) and concentrate (70%) composed of corn, urea, mineral salts, CGL, and different UFA sources as follows: no additional fat (NAF), rumen protected fat (RPF), soybean oil, linoleic acid (LA) or alpha-linolenic acid (LN). Methane concentrations in LA and LN were lower compared to NAF (p < 0.001), but when CH4 was expressed as a proportion of total gas, NAF and RPF showed the greatest values among evaluated UFA sources (p = 0.001). 18:1 t11 concentration showed a faster increase from 0 to 1 h and a slower decrease from 1 to 36 h of incubation, irrespective of UFA source. A higher C18:1 t11 production rate was observed from 1 h to 5 h of incubation, where LA and LN have higher values compared to NAF and RPF diets (p < 0.001). Diets with a high content of LA may be efficient as a nutritional approach to reduce methane production and RBH, resulting in positive effects on vaccenic acid concentrations.

The Effect Of Endophyte-Infected Tall Fescue Seed Consumption On Gut And Satiety Hormones Related To Intake Regulation In Holstein Steers, Mindy Elizabeth King

Theses and Dissertations--Animal and Food Sciences

Cattle consuming endophyte-infected tall fescue (E+) typically experience a syndrome termed fescue toxicosis which is thought to be caused by ergot alkaloids produced by the endophyte. The most abundant alkaloid, and considered the most likely cause of the syndrome, is ergovaline (ERV). During fescue toxicosis, a decrease in ADG is observed which is likely due to the decrease in DMI commonly observed in animals consuming E+ compared to animals consuming non-endophyte-infected tall fescue (E-). However, the cause of the decrease in intake is not well elucidated. Many physiological responses control feed intake including, but not limited to, physical, neural, metabolic, …

Spatiotemporal Interactions Between Deer And Cattle, Sydney Brewer

Honors Program: Senior Projects (Public)

Mule deer, white-tailed deer, and cattle are sympatric on the landscape throughout many portions of Nebraska and encounter each other in time and space. By considering variation in daily activity patterns and non-random patterns in the timing of passage through specific locations, we can better understand whether animals may be avoiding each other temporally when sharing space. I investigated temporal activity patterns and avoidance/attraction ratios to investigate if deer altered their activity patterns in the presence of cattle and if they exhibited avoidance at a study site near McCook, Nebraska, USA. We collected data from 19 game cameras that were …

Impact Of Mineral Supplementation On Intake Behavior And Blood Flow In Growing Beef Cattle Exposed To Fescue-Derived Alkaloids, Hannah Marie Herzing

Theses and Dissertations--Animal and Food Sciences

Consumption of endophyte-infected tall fescue by cattle has repeatedly been shown to negatively impact dry matter intake (DMI), growth rate, and circulating prolactin concentrations. The objective of the current study was to determine if a mineral supplementation would mitigate the negative effects of fescue-derived alkaloid consumption on feed intake, circulating prolactin, and the vascular system. Twelve Angus crossbred steers were used in a triplicated Latin square design consisting of three 28 d experimental periods. Treatments consisted of three top-dressed mineral supplements (142 g/head/d): a non-medicated control (CON), commercially available Fescue EMT® Mineral Defense (EMT), and a test prototype (EMT 2). …

A Survey Of Anthelmintic Resistance In Angus Bulls Participating In Centralized Performance Tests In Appalachia, Roger Tyler Rohrbaugh

Graduate Theses, Dissertations, and Problem Reports (ETD)

Resistance to anthelmintics, more commonly referred to as “de-wormers,” has been on the rise in parasites that affect cattle. Parasite infection can have severe impacts on calf productivity resulting in reduced profitability. Therefore, we sought to better understand anthelmintic resistance in Appalachia by surveying Angus bulls entering performance tests in VA and WV. During a four-year period, over 1050 Angus bulls were tested at bull development facilities in Wardensville, WV, Culpeper, VA and Wytheville, VA. Fecal samples were collected at arrival and 14-21 days later for determination of fecal egg count (FEC) reduction. Upon arrival, all bulls received either fenbendazole …

Demographics, Accuracy, And Impact Of Feed Laboratories In The United States, Jerald H. Severe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Feed analysis is very important to modern society. In the United States feed analysis is used to optimize production of food animals. Feed analysis is also used as a tool to place value on crops. As important as feed analysis is to society, little research has been done that describes which feed laboratories are the most popular and why people use them. It has been thought by some patrons that different results from the same feed sample are obtained by different laboratories. Is this true? If so, what is the effect on those that use feed laboratories to produce animals, …

The Surveillance Of Gastrointestinal Parasitic Nematodes Of Northwest Arkansas Dairy Cattle Using Traditional And Genetic Parasitological Identification Procedures, Eva M. Wray

Graduate Theses and Dissertations

Traditional and genetic parasitological identification procedures were compared using naturaland artificial nematode parasite infections in Holstein steer calves. The traditional parasitological procedures measured fecal egg counts, coprocultures with subsequent larval collection and adult nematodes collected at necropsy. The genetic identification procedures measured ITS-2 sequences extracted from different stages of nematode development: raw feces, concentrated nematode eggs, third stage larvae and adults. The primary nematodes observed were Cooperia oncophora, Cooperia punctata and Ostertagia ostertagi. The traditional techniques were not significantly different from one another, while the genetic sequencing showed variation amongst the different procedures. The raw feces sequences showed the most …

Biogeography Of The Bovine Respiratory Microbiome And Its Relationship With Bovine Respiratory Disease, Jianmin Chai

Graduate Theses and Dissertations

Bovine respiratory disease (BRD) is the most common and costly disease in the beef cattle industry, leading to high morbidity, mortality and huge economic loss. Despite the recent advances in vaccination and antimicrobial techniques, no significant health-improved outcomes have developed. Due to a deep investigation of the microbiome, respiratory microbiotas are known to have important roles for host health and disease. However, BRD specific pathogens have not yet been identified since they are found in both healthy and diseased animals. A systemic and comprehensive study of the biogeography of the bovine respiratory microbiome and its relationship with BRD is lacking …

Drought Decisions: Profit Maximizing Decisions During And After Drought Conditions, Robert Tigner, Elliott James Dennis

Extension Farm and Ranch Management News

In summary, using available price risk management tools can effectively reduce some of the market price risk variability that is inherent in agricultural production that are caused by either production or price risk.

Livestock Preference For Endophyte-Infected Or Endophyte-Free Oxytropis Sericea, Ipomoea Carnea, And Ipomoea Asarifolia, James Pfister, Daniel Cook, Stephen T. Lee, Dale R. Gardner, Franklin Riet-Correa

Poisonous Plant Research (PPR)

Fungal endophyte-infected forages have been shown to alter herbivore feeding preferences. The objective of this experiment was to compare the preference of cattle, sheep, and goats for plants containing (E+) and not containing (E-) fungal endophytes using freshly harvested Oxytropis sericea, Ipomoea carnea, and Ipomoea asarifolia. Goats and sheep rejected all forage choices regardless of endophyte status except for grass and alfalfa hay. Endophyte status had no influence on cattle forage preferences. Cattle rejected all Oxytropis sericea E+ and E- choices. Cattle discriminated between Ipomoea species, preferring Ipomoea carnea to Ipomoea asarifolia (P = 0.004). In all …

Fecal Near Infrared Reflectance Spectroscopy (Nirs) And The Nutrition Balance Analyzer (Nutbal) Case Study In South Dakota, A. A. Harty, K. C. Olson

SDSU Beef Day 2020 Summary Publication

The objective of this study was to compare fecal near infrared reflectance spectroscopy (NIRS) and the nutrition balance analyzer (NUTBAL) results with diet samples and cattle performance to determine if fecal NIRS and NUTBAL can accurately predict forage quality and cattle performance in South Dakota.

Effects Of Lasalocid And Energy Supplementation On Forage Intake, Energy Metabolism, And Performance Of Cattle Grazing Wheat Pasture, Autumn Tayler Pickett

Graduate Theses and Dissertations

Cattle grazing wheat pasture have the potential to gain BW exceptionally well, but excessive nitrogen intake results in increased excretion and increased greenhouse gas (GHG) emissions. Supplemental concentrates with the addition of an ionophore given to ruminants grazing wheat is a potential practice for producers to increase nitrogen efficiency while decreasing GHG emissions. Therefore, the objective of this experiment was to quantify the effects of energy (2.95 kg/d) and lasalocid (200 mg/hd/d) supplementation on nutrient intake, energy metabolism, respiratory gas fluxes, and performance of grazing cattle. Methane emissions were not affected (P = 0.58) by treatment, hence methane intensity (P …

Associations Among Beef Cattle Genotypes, Neospora Caninum Infection, And Reproductive Performance, Ryan James Page

Graduate Theses and Dissertations

Reproductive performance is crucial for sustained financial success in the beef cattle industry. This dissertation includes a population study that quantified the incidence of Neospora caninum infections in the central region of the United States and tested its relationship with reproductive performance in beef cattle. Trial one of that study concluded that 6.9% of open, replacement heifers (n = 1306) tested seropositive. The second trial in that project found that 9.6% of the breeding age females (n = 500) tested were seropositive for Neospora caninum; and that state in which the cattle lived and age impacted (P < 0.05) infection rate. Breed composition, number of farm dogs on the ranch, and use of total mixed rations were not associated (P > 0.1) with seropositive …

Motsinger, Mary Jo, (Fa 1370), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid only for Folklife Archives Project 1370. Student folk studies project titled “Early Veterinary Practices” which includes survey sheets with brief descriptions of remedies for cattle and horses in Logan County and Todd County, Kentucky. Sheets may include a brief description of the folk remedy, traditional practice, and informant’s name.

Effects Of Supplemental Whole Cottonseed On Weaned Calf Production, Zachary Debord

Mahurin Honors College Capstone Experience/Thesis Projects

This study compared the effect of supplemental whole cottonseed in a weaned calf ration on cattle productivity. Feed is the main cost for livestock production. Whole cottonseed supplementation may increase production and reduce the cost of gain for the ration. During the study, 18 beef calves were weaned and split into two groups and fed, with and without WCS, for 50 days to determine the effect of supplemental whole cottonseed. Productivity was determined by measuring average daily gains for each group and comparing cost of gain for each ration. It was determined that WCS did increase productivity of weaned calves …

Investigation Of Biotype, Genotype And Virulence Associated Genes Inpasteurella Multocida Capsular Type A Strains From The Respiratory Tract Of Cattle Andtheir Relationship With Disease Cases, Özgül Gülaydin, Kemal Gürtürk

Turkish Journal of Veterinary & Animal Sciences

Pasteurella (P.) multocida, which causes respiratory disease in cattle, can also be found commensally in the upper respiratory tract. Therefore, it is epidemiologically important to determine the possible difference between pathogenic and commensal strains for the diagnosis of the disease. In this study, phenotypic and genotypic characteristics and virulence associated genes of P. multocida capsular type A strains isolated from the respiratory tract of sick and healthy cattle were investigated. Also, the relationship between the disease status of animals and the characteristics of the isolates were evaluated. Total of 51 P. multocida capsular type A strains were biotyped and genotyped …

Prevalence Of Gastrointestinal Parasitic Infections In Cattle And Sheep In Two Regions Ofromania, Catalin Bogdan Sirbu, Kalman Imre, Gheorghe Darabus, Tiana Suici, Bogdan Mates, Sorin Morariu

Turkish Journal of Veterinary & Animal Sciences

Amongst ruminant livestock diseases, the gastrointestinal (GIT) helminths and protozoan parasite infections result in a significant socio-economic concern worldwide. During the period between October 2017 and November 2018, a total of 788 fresh fecal specimens from cattle (n = 303) and sheep (n = 485) were screened for the presence of gastrointestinal helminths and protozoan parasites in two historical regions (Crisana and Banat) of western Romania. Laboratory processing of fecal samples with the simple salt flotation (Willis) and sedimentation techniques, followed by microscopic analysis revealed that 86.1% of cattle and 92.6% of sheep were found to be positive for at …

Expression Profiles Of Lincrna And Mrna Related To Milk Yield And Milk Composition Traits In The Milk-Derived Exosomes Of Holstein And Doğu Anadolu Kırmızısı Cows, Selçuk Özdemi̇r, Ömer Eltas, Muhammed Hüdai̇ Çulha

Turkish Journal of Veterinary & Animal Sciences

This study aimed to demonstrate the expression profiles of lincRNAs and mRNAs affecting milk yield and composition traits in the milk-derived exosomes of Holstein and Doğu Anadolu Kırmızısı (DAK) cows. For this purpose, the locations of these specific lincRNAs and mRNAs were confirmed in quantitative trait loci. Then RT-PCR analysis was performed to identify the expression profiles of the lincRNAs and mRNAs. Lastly, correlation analysis was carried out between milk yield data from Holstein and DAK cows and expression levels of the lincRNAs and mRNAs. The findings showed that while lincRNAs and mRNAs associated with milk yield traits were upregulated …

Use Of Uav Imagery And Nutrient Analyses For Estimation Of The Spatial And Temporal Contributions Of Cattle Dung To Nutrient Cycling In Grazed Ecosystems, Amanda E. Shine

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

Nutrient inputs from cattle dung are crucial drivers of nutrient cycling processes in grazed ecosystems. These inputs are important both spatially and temporally and are affected by variables such as grazing strategy, water location, and the nutritional profile of forage being grazed. Past research has attempted to map dung deposition patterns in order to more accurately estimate nutrient input, but the large spatial extent of a typical pasture and the tedious nature of identifying and mapping individual dung pats has prohibited the development of a time- and cost-effective methodology. The first objective of this research was to develop and validate …

Cattle Industry Funding Scheme Annual Report 2018/2019, 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 …

Impact Of Feeding Distillers Grains Or Isolated Components In Distillers' Grains To Growing And Finishing Cattle, And The Comparison Of Protein Content And In-Situ Digestibility Of Feeds Commonly Used In Feedlot Diets, Brianna B. Conroy

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

The use of distillers' grains originating from biofuel production has become widely used in feedlot diets. Distillers' grains has been identified as having an increased feeding value relative to dry-rolled corn, in recent years the composition of distillers' grains has begun to change due to greater refinement in the ethanol production process. Two feedlot trials were conducted to evaluate the contribution of fat, fiber, and protein from distillers' grains in the diets of growing and finishing cattle. Growing steers were fed a grass hay-based ration, including a corn control diet compared to a diet containing modified distillers' grains plus solubles, …

Brangus Cows Have Ovarian Reserve Parameters More Like Brahman Than Angus Cows, Robert A. Cushman, Émerson M. Soares, Hannah K. Yake, Allyson L. Patterson, Shelby L. Rosasco, Joslyn K. Beard, Emmalee J. Northrop, Jerica J.J. Rich, Jeremy R. Miles, Chadwick C. Chase Jr., Michael G. Gonda, George A. Perry, Anthony K. Mcneel, Adam F. Summers

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

Bos indicus females have more surface antral follicles than Bos taurus females; however, histological studies demonstrated no difference in total number of primordial follicles between these two biological types of cattle. Primordial follicle density in the ovary was less in Nelore ovaries compared to Angus ovaries, but no studies have examined the primordial follicle density in Bos indicus cross-bred females. It, therefore, was hypothesized that primordial follicle density in the ovary would decrease as percentage Bos indicus increased. Ovaries were collected from cross-bred Angus (n=32, no Bos indicus influence), Brangus (n=15), or Brahman (n=9) …

Environmental Sampling Techniques For Herd-Level Surveillance Of Bovine Viral Diarrhea Virus, Jaden Carlson

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

Control of Bovine Viral Diarrhea Virus (BVDV) relies on resource-intensive individual animal sampling to detect and remove persistently infected (PI) cattle. Herd-level surveillance tools would be useful for herds with unknown BVDV status and for monitoring herds with BVDV-free status. The overall objective of this thesis is to explore the viability of BVDV surveillance at a herd-level using samples collected without handling individual animals. The first objective was to determine the feasibility of using stable flies as a sampling tool to detect BVDV. The second objective was to determine the feasibility of using drinking water to detect BVDV. To accomplish …

Technologies To Increase Animal Performance In Beef Production Systems, Caleb P. Weiss

Graduate Theses and Dissertations

Three monensin levels during a stocker phase (0, 800, 1600 g/ton in a free choice mineral) and two levels during finishing (0 [U] or 37.5 mg/kg diet DM [M]) were used to determine the effects of monensin supplementation during a stocker and subsequent finishing phase on beef calves. Steers (n = 605, BW = 278 ± 27 kg) were fed pearl millet hay with soybean hull and corn gluten feed supplement (0.5% BW daily [AF basis] Block 1) or grazed fall wheat (Block 2), spring wheat (Block 3), bermudagrass (Blocks 4 & 5) or wheat with mixed-grass baleage (Block 6). …

Evaluating The Epidemiology And Management Of Bovine Congestive Heart Failure, Adam Bassett

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

A form of congestive heart failure is increasingly reported as a cause of death in feedlot cattle located at moderate altitude (≤ 1,524 m.). Significant knowledge gaps exist in the epidemiology and management of this form of bovine congestive heart failure (BCHF) regarding frequency and timing of BCHF cases and ways in which beef cattle producers and veterinarians can mitigate this condition. These knowledge gaps present major barriers to understanding the mechanism of BCHF and mitigating the consequences of BCHF. The purpose of this thesis is to summarize current knowledge about BCHF, define gaps in knowledge for which more research …

Determining The Relationship Among Cattle Genotype, Hair Coat Score, And Productivity Through The Investigation Of Single Nucleotide Polymorphisms Within Prolactin, Dopamine Receptor D2, And Melatonin Receptor 1a, Erin Davis

Animal Science Undergraduate Honors Theses

Prolactin (PRL), melatonin (MTN), and dopamine (DA) are all hormones that are believed to play a role in the regulation and growth of hair in beef cattle. There are also single nucleotide polymorphisms associated with each of these hormones or their receptors, indicating that the investigation of these polymorphisms could allow them to serve as genetic markers for the future productivity of an animal. The objective of this study was to determine the relationships among cattle genotype, hair coat score, and productivity through the investigation of single nucleotide polymorphisms within prolactin, dopamine receptor D2, and melatonin receptor 1A. Body weights, …