Animal Sciences Commons^™

Program Requirements For Beef Cattle Certified As Usda Organic, Carsten Loseke, Elliott James Dennis

Cornhusker Economics

This document provides an overview of the use and production of the USDA Certified Organic program for the beef cattle industry, with an emphasis on the state of Nebraska. We detail what cattle qualify, feed requirements, medical and health standards of cattle, and premiums paid by consumers for USDA certified organic products. All information is taken from the Organic Foods Production Act Provisions available in the Federal Register.

Determining The Applicability Of Milkfish (Chanos Chanos) For Skin Grafting Through Microbiological And Histological Evaluations, Janice A. Ragaza, Bianca Patrice Go

Ateneo Aquatic and Fisheries Resources Laboratory

Tilapia fish skin, rich in Type I collagen, has been shown to accelerate wound healing, reduce infection rates, and create an optimal environment for wound care. However, the potential application of other fish species, like milkfish, for skin grafting remains underexplored. Milkfish (C. chanos), an economically significant species in the Philippines, could expand the donor pool for fish skin grafting, addressing the accessibility issues in resource-limited regions where traditional graft materials may be costly or scarce. The current study investigates the feasibility of applying tilapia fish skin sterilization techniques to milkfish skin. Collected and prepared milkfish skin was …

Environmental Biology Masters Capstone, Antonio Gonzalez-Pita

Regis University Student Publications (comprehensive collection)

Human wildlife interactions (HWI) pose a complex challenge for wildlife managers. Human encroachment into wildlife habitat and the growing number of outdoor recreationists are increasing the frequency of contact and conflict, especially in regions such as the Front Range of Colorado. Geographic information systems (GIS), which use a combination of remote sensing and environmental survey data, allow for predictive spatial analyses of where human wildlife interactions are likely to occur. I used publicly reported observations of moose to create spatial predictive maps in a species distribution model framework. Slope and elevation were shown to be the strongest predictors of HWI, …

Greenfeed Methane Measuring Machine, Department Of Primary Industries And Regional Development, Western Australia

Animal production and livestock factsheets

The Department of Primary Industries and Regional Development (DPIRD) now has the cutting-edge GreenFeed machine which measures emissions from individual cows and sheep, allowing us to determine Greenhouse Gas (GHG) emissions more accurately in the paddock.

Feeding Systems And Fresh Lamb Color Stability, Koushik Mondal

Theses and Dissertations--Animal and Food Sciences

Consumers consider the surface color of fresh lamb as the indicator of freshness and wholesomeness, which affects their purchase decisions. The redox chemistry of myoglobin (Mb) determines the color of fresh lamb. Artificial raising on milk replacer (a pre-weaning strategy) as well as red clover supplementation are management strategies used in lamb production. This thesis focuses on the effects of artificial raising on milk replacer and red clover supplementation on the color and oxidative stability of fresh lamb.

In the first experiment, the effect of pre-weaning with milk replacer on the carcass attributes, color stability and lipid oxidation of lamb …

Joining - Setting The Potential Of Your Ewe Flock, Department Of Primary Industries And Regional Development, Western Australia

Animal production and livestock factsheets

Joining is the time when the potential lambing of your flock is set, so make the most of it.

Preparation of ewes and rams for joining should start 8 weeks prior to joining for the greatest benefit.

Key tactical decisions around ewe and ram health and nutrition should be made prior to joining. This should ideally start 8 weeks before joining as the impact of nutrition, shearing and teasing take time to influence joining success.

The majority of the ewes in Western Australia are seasonal breeders. The spontaneous cycling in Merinos and breeds such as Poll Dorset are least affected …

A Road Map For Place Based Collaboration For Conflict Reduction, Joseph L. Zecher

Undergraduate Theses, Professional Papers, and Capstone Artifacts

No abstract provided.

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 25 2024, Several Authors

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

No abstract provided.

Letter From The Faculty Editor, Beth Kegley

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

No abstract provided.

Featured Faculty Mentor/Student Team, Austin Jones, Ashley Dowling, Baylie Day

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

No abstract provided.

Evaluating Efficiency And Accuracy Of Three Texture Analysis Methods For Blackberry Fruit, Rhys M. Brock, Carmen Johns, Katelyn Lust-Moore, Margaret Worthington

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

A major objective of the University of Arkansas System Division of Agriculture (UADA) Fruit Breeding program is to improve the texture of blackberry (Rubus subgenus Rubus Watson). Blackberry varieties with improved fruit firmness transport and store well and may maintain superior quality under challenging postharvest conditions than softer varieties. Increased firmness may also make cultivars less susceptible to red drupelet reversion (RDR), a postharvest disorder of blackberries in which fully black drupelets revert to red after harvest. This research project aims to assess the efficiency and accuracy of three methods applied in evaluating blackberry firmness. The study compares instrumental analysis …

Stream Restoration Effectiveness In Mullins Creek In Fayetteville, Arkansas, Amadeo Scott, Shannon Speir

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

Lotic waterways are vital for habitat, food, water, and flood protection, but urbanization poses a major threat to their integrity. Runoff from urban surfaces leads to pollution, flashiness, loss of biodiversity, and other symptoms, also known as Urban Stream Syndrome (USS). Streams can be restored in order to combat USS, but most restorations are not monitored, so their long-term effectiveness is unknown. This study quantitatively evaluated a decade-old stream restoration in Fayetteville, Arkansas, to assess its effectiveness in combating USS and achieving set restoration goals, and to gain insights for future restoration projects. Restoration goals included decreasing erosion and sedimentation, …

Comparing In Vivo Dry Matter Digestibility Vs In Vitro Dry Matter Digestibility, Katherine Kemper Sanders

Graduate Theses/Dissertations

Three yearling steers were used in a 2 X 3 incomplete Latin square design to determine In Vivo Dry Matter Digestibility of two forages, alfalfa (ALF) and mixed grass hay (GH) to determine the accuracy of In Vitro Dry Matter Digestibility (IVDMD) methods for determining the true dry matter digestibility (DMD). Forage samples were collected and digested In Vitro using the ANKOM Daisy^II Incubator. Forage Fiber Analysis of the residue was used to determine true dry matter digestibility. There was significant interaction between treatment and period (P < 0.05) for both In Vitro and In Vivo methods. When comparing the two methods there …

Native Forbs Provide Pollinator Resources And Improve Forage Nutrient Composition, Animal Performance, And Pasture Productivity, Jessica L. Prigge, Eric Bisangwa, Jonathan D. Richwine, Virginia R. Sykes, Jennie Lz Ivey, Patrick D. Keyser

Faculty Publications

Pollinator declines and expectations for more sustainable agriculture, including pasture-based enterprises, bring attention to strategies to enhance the habitat value of grazing lands. We evaluated native warm-season grass (NWSG) pastures with (FORB) and without (CONT) interseeded native forbs in 2021–2023. An analysis was conducted using R with the significance set at p ≤ 0.05. The grass appeared to be weakened predominantly by grazing management practices. Forb density and mass had an inverse relationship in seasons two and three. Total forage mass declined in response to increased grazing days and weakened stands. The forage nutritive compositions differed, with more stable, season-long …

Diet And Monensin Influence The Temporal Dynamics Of The Rumen Microbiome In Stocker And Finishing Cattle, Jianmin Chai, Caleb P. Weiss, Paul A. Beck, Wei Zhao, Ying Li, Jiangchao Zhao

Animal Science Faculty Publications and Presentations

Background

Stocker cattle diet and management influence beef cattle performance during the finishing stage, but knowledge of the dynamics of the rumen microbiome associated with the host are lacking. A longitudinal study was conducted to determine how the feeding strategy from the stocker to the finishing stages of production affects the temporal dynamics of rumen microbiota. During the stocker phase, either dry hay or wheat pasture were provided, and three levels of monensin were administrated. All calves were then transported to a feedlot and received similar finishing diets with or without monensin. Rumen microbial samples were collected on d 0, …

Hepatic Mrna Expression Of Innate And Adaptive Immune Genes In Beef Steers With Divergent Residual Body Weight Gain, Deborah Ologunagba

Graduate Theses, Dissertations, and Problem Reports (ETD)

Immune system function is critical to maintaining the health and increasing productivity of cattle, affecting both their growth and their disease resistance. In an efficient immune system, the liver assumes an integral function in detoxification and metabolic processes and contributes substantially to overall production and immunity. In this study, we evaluated the hepatic mRNA expression of genes involved in innate and adaptive immunity in crossbred beef steers with either a positive or negative residual body weight gain (RADG). Positive-RADG beef steers (n = 8; RADG = 0.76 kg/d) and negative-RADG beef steers (n = 8; RADG = -0.64 kg/d) were …

Letter From The Dean, Jeff Edwards

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

No abstract provided.

Contents, Discovery Editors

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

No abstract provided.

Instructions For Authors, Discovery Editors

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

No abstract provided.

Waterbird-Perceived Damage, Control Measures, And Economic Implications For Rice Production In The Brazilian Cerrado, Demetrio Luis Guadagnin, Alexandre Afonso Meyer, João Augusto Rossi Borges, Fernanda Maia Justo

Human–Wildlife Interactions

Waterbirds have the potential to inflict economic damage to crops. However, is rice (Oryza sativa) production in the Brazilian Cerrado significantly affected by waterbirds? This study aimed to assess the extent of waterbird damage on irrigated rice production in Central Brazil. We conducted surveys of waterbird populations in rice agroecosystem habitats throughout the cultivation cycle and analyzed the expenses associated with waterbird-induced yield losses and the control measures employed by farmers. The 2 most prevalent waterbird species observed were Dendrocygna viduatta and D. autumnalis, comprising 68.6% of all recorded waterbirds. These species were more frequently encountered and …

Increasing Soy Products Inclusion In Swine Diets To Improve Growth Performance, Health, And Pork Quality, Ashir Foreman Atoo

Electronic Theses and Dissertations

Despite its excellent nutritional profile, soybean meal (SBM) is limited in nursery pig diets due to its anti-nutritional factors (ANFs), which young pigs tolerate poorly. In the first study, strategies to mitigate these effects included supplementation with enzymes, alone or with acidifiers. A total of 240 weaned pigs (5.9 ± 0.8 kg average body weight [BW]) were assigned in randomized complete block design to five dietary treatments: low, medium, or high SBM diets, high SBM with multienzyme, and high SBM with multienzyme plus acidifier. Diets were fed in three phases: phase 1 (0–1 weeks), phase 2 (1–3 weeks), and phase …

Growing South Dakota (Winter 2024), College Of Agriculture, Food And Environmental Sciences

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

[Page] 3 Continuing a Leadership Journey
/="/">[Page] 5 CAFES Leadership Team Grows
/="/">[Page] 7 Award-Winning Faculty & Staff
/="/">[Page] 9 New Endowment Holders Recognized
/="/">[Page] 10 Inaugural Precision Livestock Field School Offered at SDSU Cottonwood Field Station
/="/">[Page] 11 SDSU Celebrates Professional Program in Veterinary Medicine Students [Page] 13 Clay Carlson, SDSU Meat Science Graduate Student Approaches School and Life with Winning Mindset
/="/">[Page] 15 SDSU Alumni has been selected as the Head Coach of the South Dakota State University Livestock Judging Team
/="/">[Page] 16 Livestock Units Promote Hands-On Learning & Premier Research …

State Barrier Fence - Esperance Extension Project Overview 2024, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

Western Australia’s State Barrier Fence plays an important role in protecting landholders inside the fence by preventing the movement of animal pests, including wild dogs and emus, from pastoral areas into the agricultural regions. It is a state asset which is managed by the Department of Primary Industries and Regional Development.

The original fences (numbers 1, 2 and 3) were constructed between 1902 and 1907. Originally known as the Rabbit Proof Fences, it has also been known as the State Vermin Fence, the Emu Fence and now the State Barrier Fence. Since 2010, the fence has been upgraded to wild …

Effects Of Habitat Selection And Individual Quality On The Reproductive Success Of Barn Owls (Tyto Furcata), Jaime E. Carlino

Cal Poly Humboldt theses and projects

The hypothesis of adaptive breeding habitat selection proposes congruence between the evolved selection of habitats and fitness components such as reproductive success. However, mismatches between habitat selection and observed fitness outcomes are not unusual and can arise for multiple reasons. Variation in individual qualities of animals has also been found to affect reproduction and survival. I examined associations between barn owl nest box selection, reproductive output, and plumage characteristics previously shown to correspond to individual quality. I found that barn owls selected tall nest boxes made of wood, mounted high off the ground, and with increased proportions of grassland around …

Adding Value To Crop Production Systems By Integrating Forage Cover Crop Grazing, Robert B. Mitchell, Daren D. Redfearn, Kenneth P. Vogel, Terry J. Klopfenstein, Galen Erickson, P. Steven Baenziger, Bruce E. Anderson, Mary E. Drewnoski, Jay Parsons, Steven D. Masterson, Marty R. Schmer, Virginia L. Jin

Department of Agronomy and Horticulture: Faculty Publications

In addition to their value as cereal grains, wheat (Triticum aestivum L.) and triticale (× Triticosecale Wittmack) are important cool-season annual forages and cover crops. Yearling steer (Bos taurus) performance was compared in the spring following autumn establishment as for age cover crops after soybean [Glycine max (L.) Merr.] grain harvest. Replicated pastures (0.4 ha) were no-till seeded in three consecutive years into soybean stubble in autumn, fertilized, and grazed the following spring near Ithaca, Nebraska, USA. Each pasture (n = 3) was continuously stocked in spring with four yearling steers (380 ± 38 kg) for …

Review On Locusta Migratoria Cinerascens (Fabricius, 1781)., Laib Djamel Eddine, Benzehra Abdelmadjid, Laib Imen, Aouzal Badis, Salah Akkal

Journal of Bioresource Management

The migratory locust, scientifically known as Locusta migratoria (Linnaeus, 1758), is a captivating insect species that has drawn the interest of scientists, farmers, and the general public. Recognized for its notorious swarming behavior, this insect has the potential to cause extensive damage to crops, leading to agricultural plagues and food shortages. However, beyond its reputation as a pest, the migratory locust is a subject of scientific fascination due to its intricate life cycle, remarkable ability to undergo rapid and dramatic transformations, and its crucial role within the ecosystems it inhabits. This review delves into various facets of L. migratoria, including …

Utilizing An Extract From Endophytic Fungus, Alternaria Alternata, Isolated From Ricinus Communis L. Leaves As A Biological Agent For Controlling The Migratory Locust In Algeria, Laib Djamel Eddine, Benzehra Abdelmadjid, Laib Imen, Aouzal Badis, Akkal Salah

Journal of Bioresource Management

In this research, we aimed to explore the insecticidal potential of Alternaria alternata, an endophytic fungus derived from the leaves of castor oil plant. To test its insecticidal efficacy, various doses of A. alternata mycoextract were administered to Locusta migratoria L. through both topical and oral pathways. The findings revealed that the insects displayed the highest susceptibility to a concentration of 2 g/L, leading to an impressive mortality rate of 87.5 % and 93.75 % for topical and oral administrations, in the same order. The extract displayed remarkable insecticidal properties, demonstrating LC50 values of 1.09 g/L for the topical …

Aversion Properties Of Retrorsine, Retrorsine Nitrogen Oxide And Frosted Senecio Latifolius, Leendert D. Snyman

Poisonous Plant Research (PPR)

Two pilot trials, investigating the aversive properties of retrorsine and retrorsine nitrogen oxide and that of frosted Senecio latifolius, were executed. Retrorsine and retrorsine-NO (the toxic principles of Senecio retrorsus), unlke sceleratine-NO (the toxic principle of another hepatotoxic pyrrolizidine alkaloid containing plant, namely S. latifolius), were not capable of establishing aversion when given to a sheep. Frosted S. latifolius given to a sheep also did not induce aversion. However, a sheep averted to S. latifolius (non-frosted) refused eating frosted S. latifolius.

Sceleratin Nitrogen Oxide As Aversive Agent In Conditioning Livestock To Avoid Senecio Latifolius, Leendert D. Snyman

Poisonous Plant Research (PPR)

Sceleratine nitrogen oxide, when administered together with a dichloromethane extract of Senecio latifolius, successfully conditioned cattle and sheep to avoid milled freeze dried S. latifolius mixed with maize meal. This treatment was effectively applied in conditioning steers to refuse eating S. latifolius grown in pots.

Living Among Wildlife: Elevating Human-Wildlife Interactions And Coexistence, Bridget Rebecca Murphy

Graduate Student Portfolios, Professional Papers, and Capstone Projects

After a semester of learning, both in class and in nature, my writing honed in further on this human-nature divide. To me, I see humans as part of nature – as we are mammals, animals, part of the food chain, biological beings no higher than others on our planet. We have simply constructed this false narrative around us within our societies, minds and media that embeds this division between us and nature, between us and wildlife. Humans have been managing, stewarding, living off and within landscapes for thousands of years. As time and technology evolved, a lot of people began …