Animal Sciences Commons^™

Infestation By Phorid Flies Disrupts Behavior And Immune Function In Honey Bees Monitored By Radio-Frequency Identification, Gloria Ruiz-Guzmán, Oliverio Delgado-Carrillo, Francisco J. Balvino-Olvera, María De Jesús Aguilar-Aguilar, Violeta Patiño-Conde, Paulo De Souza, Ulises Olivares-Pinto, Mauricio Quesada

Research outputs 2022 to 2026

Honey bees (Apis mellifera Linnaeus) are important pollinators in natural and agricultural ecosystems and play a key role in global food production. However, colonies are increasingly affected by multiple stressors, including emerging parasites, which can compromise their health and performance. Among these, phorid flies (Diptera: Phoridae) have been observed in association with weak or collapsing honey bee colonies in various regions in Mexico, yet their effects on honey bee behavior and immune function under field conditions remain poorly understood. In this study, we investigated the impact of a phorid fly infestation on the behavior, survival, and immune defense of A. …

Genomic Markers Of Performance Within An Organic Pasture-Based Dairy Heifer Development Program, Connor Douglas Waldron

All Graduate Theses and Dissertations, Fall 2023 to Present

Pasture-based dairying is important to organic milk production, but young heifers differ in how well they eat, grow, and adapt to grazing. This study tested whether commercial genetic information could help identify which heifers would perform best on pasture. Genetic samples from 139 Holstein, Jersey, Holstein-Jersey, and ProCross heifers raised on organic pastures in northern Utah were analyzed with the Neogen Igenity Select test and compared with measurements of feed intake, growth, and grazing performance. Genetic scores clearly separated the breed groups, but they were not strong predictors of how individual heifers grew on pasture. Pasture quality, especially forage nutrient …

A New Species Of Liocheles Sundevall, 1833 (Scorpiones: Hormuridae) From Similipal Tiger Reserve, Odisha, India, Saurabh Kininge, Tejas Thackeray, Prakash C. Gogineni, Akshay Khandekar

Euscorpius

A new species of Liocheles Sundevall, 1833 is described based on male and female specimens collected from Similipal Tiger Reserve, Mayurbhanj district, Odisha, India. The new species can be easily distinguished from all six known congeners by combination of non-overlapping morphological characters such as carinae and granulation morphology of pedipalp and metasomal segments, median eye ratios. The discovery of Liocheles similipalensis sp. n., elevate the total number of species of the genus to seven and represent the fourth species to be described from India. The current study also highlights the need of systematic surveys along with detailed morphological and molecular …

The Buck Effect In Goats: A Review Of Neuroendocrine Mechanisms, Modulating Factors, And Applications In Reproductive Management, Nitira Anakkul, Sopita Suttikrai, Ratree Jintana, Theerawat Swangchan-Uthai

The Thai Journal of Veterinary Medicine

The male effect (buck effect) is a sustainable, hormone-free biostimulation strategy in caprine reproduction, in which introducing sexually active bucks to seasonally anestrous does increases luteinizing hormone (LH) pulse frequency, thereby stimulating folliculogenesis and ovulation. This review provides a comprehensive synthesis of the sensory, neuroendocrine, breed-related, and management factors governing male biostimulation in goats (Capra hircus). Olfactory signals, including the identified primer pheromone 4-ethyloctanal, are perceived through the main and accessory olfactory systems and act together with visual, auditory, and tactile cues. These sensory inputs activate the hypothalamic gonadotropin-releasing hormone (GnRH) pulse generator probably through the medial amygdala …

Physicochemical, Antioxidant, And Antimicrobial Properties Of Pasteurized Buffalo Milk Fortified With Roselle (Hibiscus Sabdariffa L.) Extract, Rikes Taruk Allo, Irma Isnafia Arief, Cahyo Budiman, Dicky Tri Utama, Irfan Dwidya Prijambada, Muhammad Saifur Rohman

Jurnal Ilmu Ternak Universitas Padjadjaran

This study aimed to evaluate the effects of roselle (Hibiscus sabdariffa L.) extract fortification on the physicochemical properties, nutritional composition, and functional activities of pasteurized buffalo milk. The study employed a 2 × 2 factorial Completely Randomized Design (CRD) with three technical replicates. The treatment factors were buffalo milk type (River and Toraja Belang) and roselle extract concentration (0% and 5%, v/v). Fortification with 5% roselle extract decreased the pH to 5.60 ± 0.07 and 5.51 ± 0.06 and the viscosity to 2.76 ± 0.75 and 2.42 ± 0.41 mPa·s, respectively, but did not affect water activity. River buffalo …

Assessment Of Pletekan Leaf Extract (Ruellia Tuberosa L.) As An Antibacterial Feed Additive For Broiler Chickens (Gallus Gallus Domesticus L.) Infected With Salmonella Sp., Nuria Istiqomah, Poncojari Wahyono, Rury Eryna Putri, Abdulkadir Rahardjanto

Jurnal Ilmu Ternak Universitas Padjadjaran

The use of synthetic antibiotics as antibiotic growth promoters (AGPs) in broiler chickens raises concerns over antibiotic residues and bacterial resistance, necessitating safer natural alternatives. Ruellia tuberosa L. contains various secondary metabolites with potential antibacterial properties; however, its in vivo efficacy against Salmonella sp. remains poorly documented. This study aimed to analyze the phytochemical composition of R. tuberosa leaf extract and evaluate its antibacterial activity against Salmonella sp. in broiler chickens. A Completely Randomized Design (CRD) was employed with eight treatments: a positive control (tetracycline), a negative control (Tween-80), and six extract concentrations (125, 250, 375, 500, 625, and 1000 …

In Vitro Fermentability And Digestibility Of Citronella Grass (Cymbopogon Nardus) Waste Steamed And Fermented Using Different Species Of White-Rot Fungi, Muhammad Hamzah, Sitti Wajizah, Indra Wahyudi, Samadi

Jurnal Ilmu Ternak Universitas Padjadjaran

Waste from citronella grass (Cymbopogon nardus) distillation has potential as an alternative ruminant feed, but its utilization is limited by its high lignocellulosic content, which reduces digestibility. This study evaluated the effect of fermentation using different white-rot fungi (WRF) species on the in vitro fermentability and digestibility of citronella grass waste. A Completely Randomized Design with five treatments and four replicates was used: an uninoculated control, fermentation with Trametes versicolor, Phanerochaete chrysosporium, Lentinula edodes, and a T. versicolor plus P. chrysosporium consortium. The observed parameters included dry matter and organic matter digestibility, pH, ammonia (NH …

The Effect Of Tannin Powder Supplementation In The Ration On Hematological Profiles And Blood Urea Nitrogen Of Priangan Sheep, Najwa Hegyra Gumilar, Iman Hernaman, Diding Latipudin, Ghistavera Izvantika

Jurnal Ilmu Ternak Universitas Padjadjaran

The use of dietary tannins as natural feed additives to regulate rumen protein degradation and improve nitrogen metabolism has been increasingly explored. Nevertheless, the evidence concerning the combined use of chestnut (Castanea sativa) and quebracho (Schinopsis lorentzii) tannin extracts in Priangan sheep is still limited. This study aimed to evaluate the effects of a commercial tannin powder containing these two plant extracts on Blood Urea Nitrogen (BUN) concentration and hematological profiles in Priangan sheep. Eighteen healthy male Priangan sheep with an initial average body weight of 19.64±2.51 kg were randomly allocated into three dietary treatments in …

The Effect Of Adding Tannin Powder In The Ration On Performance And Nutrient Digestibility Of Priangan Sheep, Ghistavera Izvantika, Iman Hernaman, Urip Rosani, Najwa Hegyra Gumilar

Jurnal Ilmu Ternak Universitas Padjadjaran

This study was conducted to assess the effects of dietary tannin powder supplementation on the growth performance and nutrient digestibility of Priangan sheep. Eighteen male Priangan sheep, aged 8–9 months and with an average initial body weight of 19.64 ± 2.51 kg, were used in a 77-day experiment consisting of a 7-day adaptation period followed by a 70-day feeding trial. The experiment was arranged in a Completely Randomized Design (CRD) with three dietary treatments and six replicates per treatment. The treatments were as follows: P0, 30% corn stover silage and 70% concentrate; P1, 30% corn stover silage, 69% concentrate, and …

Strategic Value Chain Analysis Of Baiada Poultry: Enhancing The Industrial Value Of Ross Breeders In South Australia, Hammam Abdullah, Eudia Christina Wulandari, Zakaria Husein Abdurrahman

Jurnal Ilmu Ternak Universitas Padjadjaran

The Australian poultry industry is undergoing a significant transformation driven by rising protein demand and stringent standards for animal welfare and biosecurity. As a market leader, Baiada Poultry plays a pivotal role in the upstream Ross breeder sector in South Australia. This study evaluates Baiada’s strategic positioning and operational efficiency to identify how vertical integration and value chain optimization enhance industrial value. Using a descriptive qualitative case study approach, this research utilizes Value Chain Analysis (VCA) and SWOT analysis. Data were gathered through field observations at South Australian breeder facilities, in-depth interviews with management, and comprehensive documentation of biosecurity protocols. …

Comparative Polynomial Modeling Of Ross Breeder Egg Production Curves In South Australia, Wasiah Darojatun, Eudia Christina Wulandari, Zakaria Husein Abdurrahman

Jurnal Ilmu Ternak Universitas Padjadjaran

Egg production is a critical economic indicator in the Australian poultry industry, particularly for Ross breeder broilers. This study aims to evaluate and determine the most accurate mathematical model for representing the egg production curve of Ross breeders at Baiada Farm, South Australia. Data from a 34-week production cycle (week 24 to 57) were analyzed using four polynomial regression models: quadratic, cubic, quartic, and quintic. The parameters evaluated include the rate of increase toward peak production, the persistence after the peak, and the coefficient of determination (R2) to measure model accuracy. Preliminary observations show that Ross breeders exhibit a sharp …

Credit Access And Technical Efficiency Among Laying Hen Farmers In Indonesia: A Propensity Score Matching Analysis, Mutiara Amalina Khairisa, Dwi Rachmina, Netti Tinaprilla

Jurnal Ilmu Ternak Universitas Padjadjaran

Eggs are a key source of animal protein for the Indonesian population, as they are relatively inexpensive and accessible even for low-income families. The stability of egg production is important for national food security. Access to credit is crucial for continuity in poultry production and can help farmers sustain their operations through efficient farm management. The study aims to examine the factors influencing farmers' decisions to access credit and to evaluate the estimated association between credit and technical efficiency using 2014 Livestock Farm Household Survey data, complemented by provincial producer-price statistics for May 2013–April 2014. Credit was positively associated with …

Comparative Case Study Of Production Efficiency, Financial Performance, And Business Risk In Laying Hen Farms With Different Housing Systems And Management Conditions, Aliffa Mahayu Swastiratu, Fanny Widadie, Darsono

Jurnal Ilmu Ternak Universitas Padjadjaran

The laying hen sector continues to expand in response to increasing demand for animal protein; however, productivity remains sensitive to environmental conditions, particularly temperature fluctuations that affect production stability. The housing system represents a key management factor influencing farm performance. This study aims to compare production efficiency, financial performance, and business risk between closed-house and open-house laying hen systems. A comparative case study approach was applied to two commercial farms in Bayat District, Klaten Regency, representing each housing system. Data were analyzed using feed conversion ratio (FCR) and mortality rate for production efficiency, cost–revenue analysis, R/C ratio, and return on …

: Examining The Fitness Costs Of Sex-Specific Song In An Understudied Caribbean Endemic (Icterus Portoricensis), Michelle J. Moyer

Academic Affairs

Our ability to develop effective conservation strategies for rare species is impeded by limited knowledge of their distributions, natural histories, and environmental threats. The Puerto Rican Oriole (Icterus portoricensis) is an endemic species on the island of Puerto Rico and is currently considered to be data-deficient by the Puerto Rican government, indicating that not enough is known about this species to properly assess the level of conservation priority. Males and females sing different songs, and only males sing during the dawn chorus. This unusual sex-specific separation suggests that male and female Puerto Rican Orioles may be using their songs for …

Sinergia Para Un Futuro Sostenible. Tecnologías Y Agrosistemas, Jaime Eduardo Andrade Ramírez, Angélica Bravo Bojórquez

Ingeniería

Este libro reúne los resultados más relevantes del proyecto de investigación “Laboratorio Experimental de Sistemas Tecnológicos Orientados a Modelos Acuapónicos (Lestoma)” desarrollado en la Universidad de Cundinamarca, Extensión Facatativá, liderado por el Grupo de Investigación de Sistemas y Tecnología Facatativá (GISTFA). Lestoma también contó con la colaboración de los grupos de investigación Axioma, Agrociencia y Cundinamarca Agroambiental, adscritos respectivamente al programa de Ingeniería de Sistemas y Computación, Ingeniería Agronómica e Ingeniería Ambiental de las Facultades de Ingeniería y Ciencias Agropecuarias. El proyecto también contó con la colaboración estratégica del grupo de investigación Centro de Investigaciones Ambientales de la Universidad del …

Phenological Flexibility In Nesting Grassland Birds Over A Half Century Informs Timing Of Management, Kristin S. Ellis, Michael J. Anteau, Lawrence D. Igl, Garrett J. Macdonald, Neal D. Niemuth, Aaron T. Pearse, Jill A. Shaffer, Christine A. Ribic, Josh L. Vest, Masanori Abe, Daniel S. Ackerman, Marissa A. Ahlering, Johanna N. Alpert, Anahit Amiri, Kent Andersson, Jacqueline K. Augustine, Kristel K. Bakker, Jeffrey L. Beck, Adam C. Behney, Jacy S. Bernath-Plaisted, Todd R. Bogenschutz, Eric K. Bollinger, Lauren E. Bortolotti, Andy J. Boyce, Jeffrey D. Brawn, Fred C. Bryant, Andrew J. Campomizzi, Jay D. Carlisle, J Matthew Carroll, Rachel Carroll, John P. Carroll, Justin R. Clarke, Michael R. Conover, Reesa Y. Conrey, Jaime J. Coon, Kyle A. Cutting, Stephen K. Davis, Dawn M. Davis, Duane R. Diefenbach, Jonathan B. Dinkins, R Andrew Dreelin, Victoria J. Dreitz, Courtney J. Duchardt, Michael W. Eichholz, Susan N. Ellis-Felege, Kevin S. Ellison, Bradley C. Fedy, Samantha D. Fino, Robert J. Fletcher Jr, Dillon T. Fogarty, Samuel D. Fuhlendorf, Pamela R. Garrettson, Robert J. Gates, Erin L. Gelling, James J. Giacomo, Alex Glass, Cheri L. Gratto-Trevor, Ryan D. Haffele, Christian A. Hagen, Vanessa B. Harriman, Samuel W H Harryman, David A. Haukos, Robert T. Haynam, Heather A. Herakovich, James R. Herkert, Fidel Hernandez, Jason M. Hill, H Jeffrey Homan, Torre J. Hovick, Jonathan A. Jenks, William E. Jensen, Aaron N. Johnston, Sydney-Marie Jones, Carly S. Kelly, Kaylan M. Kemink, Silka L F Kempema, Dylan C. Kesler, Christopher P. Kirol, Robert W. Klaver, Page E. Klug, Jesse L. Kolar, Nicola Koper, Kyle J. Kuechle, Jonathan D. Lautenbach, Zoe M. Lebrun-Southcott, David W. Londe, Scott R. Loss, Cullen M. Mackenzie, Patrick A. Magee, Douglas L. Manzer, John P. Mccarty, Gywm Mckee, Ann E. Mckellar, Lance B. Mcnew, James R. Miller, Megan C. Milligan, Ashlee K. Minor, Rocco J. Murano, Les D. Murray, David E. Naugle, Clayton K. Nielsen, Christopher J. Norment, Sarah B. Ogden, Lindsay A. Parsons, Brian D. Peer, Noah G. Perlut, James C. Pittman, Christopher D. Pollentier, Larkin A. Powell, Aaron C. Pratt, John P. Pulliam, Nancy M. Raginski, Dan R. Reinking, Kaitlyn M. Reintsma, Terry Z. Riley, Kevin M. Ringelman, Joseph R. Robb, Scott K. Robinson, Andres N. Rosales, Charlotte L. Roy, Kayla A. Ruth, Brett K. Sandercock, Kevin K. Sedivec, Steve K. Sherrod, Justin J. Shew, Mason L. Sieges, Jenny L. Sika, Susan K. Skagen, Cassandra G. Skaggs, Joseph Smith, Jennifer A. Smith, Kurt D. Smith, Alex J. Solem, Joshua D. Stafford, Glenn E. Stauffer, Matthew D. Stephenson, Lee Sutcliffe, Amber E. Swicegood, Jason Tack, Evan P. Tanner, Catrina V. Terry, Wendy P. Tori, Ashley M. Unger, Kelly R. Vanbeek, William E. Vetter, Jay A. Vonbank, Brett L. Walker, Michael D. Whitson, Maiken Winter, Kimberly A. With, Donald H. Wolfe, Amy A. Yakel Adams, Benjamin Zuckerberg

United States Department of Agriculture Wildlife Services: Staff Publications

The timing of biological events for wildlife species reflects and influences ecological and evolutionary processes and helps guide management actions to meet conservation objectives. Climate change may cause phenological shifts across trophic levels and ecosystems, which can have broad ecological impacts. Shifts may also result in mistiming between management practices based on historical conditions and current biological events, reducing the effectiveness of natural resource management and conservation efforts. We analyzed nesting phenology patterns over recent decades across North America for 44 species of grassland-nesting birds, including waterfowl, upland gamebirds, shorebirds, and passerines, many of which have experienced precipitous population declines. …

Cow Size And Reproductive Efficiency: A Western Ranch Perspective, David Secrist

All Current Publications

Production costs and reproductive efficiency are critical elements to the survival of cow-calf operations in the West. A cow’s ability to produce a healthy calf at a marketable weight is closely tied to her maintenance requirements and management’s ability to meet those needs from ranch resources at a low cost. This fact sheet explores public-land grazing, cow reproductive efficiency, and solutions for producers.

Combined Effects Of Postdistillation Residue Blends From Medicinal Plants On In Vitro Ruminal Microorganisms, Enzymes, Nitrogen And Energy Efficiency, And Antioxidant Status, Mojtaba Akbari Shooshood, Javad Rezaei, Mahdi Ayyari, Yousef Rouzbehan

Turkish Journal of Veterinary & Animal Sciences

In this study, the combined effects of postdistillation residue blends, including pomace, wastewater, and their mixture, derived from rosemary (RO), fennel (FE), spearmint (SP), and rose (ROS), on in vitro microbial populations, enzymatic activities, fermentation, and antioxidant status were evaluated using the gas production technique. The three phytobiotic blends were MP (mixed pomace of RO, FE, SP, and ROS; 1:1:1:1 ratio), MW (mixed wastewater of RO, FE, SP, and ROS; 1:1:1:1 ratio), and MPW (mixed pomace–wastewater of MP and MW; 1:1 ratio). Each blend was used at 2% and 3% of diet dry matter (DM). The experimental diets were as …

Ethylcyanoacrylate Adhesive And Microperforated Polyethylene Tape For The Cutaneous Closure Of Bitches Following Unilateral Total Mastectomy, Leonardo Martins Leal, Fábio Rodrigo Castro Bastos, Joseneia Boeing, Gabriel Aguiar Pavilak, Isaac Romani, Tais Harumi De Castro Sasahara, Paola Castro Moraes

Turkish Journal of Veterinary & Animal Sciences

The use of ethylcyanoacrylate (Super Bonder®) adhesive and microperforated polyethylene tape (Transpore) for the cutaneous closure of extensive wounds following unilateral mastectomy was evaluated, and the healing process was clinically assessed. Included in the study were 15 bitches diagnosed with mammary neoplasia, aged 4–14 years and weighing 3–33 kg. All bitches underwent a 30–60 cm craniocaudal cutaneous incision through the skin in the ventral thoracoabdominal region. Following excision of the tumor and the entire mammary chain, the adjacent tissues were approximated with polyglecaprone 25 sutures. Skin-edge coaptation was achieved through the application of adhesive to half of each wound, while …

Investigation Of Feed Values With In Vitro Technique And Chemical Properties, Particle Size Of Total Mixed Rations Prepared In Commercial Dairy Farms, Özlem Karcioğlu, Betül Zehra Sariçi̇çek

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to investigate the chemical and physical properties and feed values of total mixed rations used on dairy cattle farms in Ankara Province. Included in the study were three farms from each of the five districts of Ankara Province (atotal of 15 commercial dairy farms). Total mixed ration (TMR) samples were collected weekly from each farm over a 3-month period in 2025. The chemical composition (crude protein, crude fat, crude fiber, acid detergent fiber (ADF), neutral detergent fiber (NDF), and acid detergent lignin (ADL)), in vitro digestibility parameters (in vitro gas production (IVGP), methane production (MP), organic …

Optimizing Marination Methodology, Holding Temperature, And Holding Time To Upgrade The Physicochemical And Sensorial Attributes Of Japanese Quail (Coturnix Japonica) Breast Fillets, Naveen Uduwawithana, Ruvini Mutucumarana

Turkish Journal of Veterinary & Animal Sciences

The aim was to optimize the effect of meat marination method (unmarinated, tumbling, injection, and immersion), holding temperature (4 oC and 8 oC), and holding time (4 h, 8 h, and 12 h) on the physicochemical and sensorial properties of Japanese quail (Coturnix japonica) breast fillets. Ninety-six deboned breast fillets (mean weight ± SD; 10 g ± 2) from 42-day-old unsexed Japanese quails were marinated. Injection marination showed the highest uptake (p < 0.05). The method × temperature × time interaction (p < 0.05) was significant for cooking yield, meat pH, hardness, cooking loss, and surface color lightness (L*). The highest pH (p < 0.05) was reported when the unmarinated control was retained for 8 h. Tumbling marinated meat when held for 12 h at 8 oC yielded the maximum cooking yield (60.3%). The cooking loss was minimal in unmarinated, tumbled, and immersion-marinated meat when held for 12 h. Irrespective of the temperature, 4-h holding time caused the minimum meat hardness in all four treatments. Tumble-marinated meat when held for 12 h at 8 oC resulted in the minimum cooking loss, hardness, and lightness (L*), as well as the maximum cooking yield. Meat when held at 4 oC for 4 h following injection marination had the highest scores for color, aroma, marinade penetration, flavor, and overall acceptability. In conclusion, quail breast fillets when tumble-marinated and held at 8 oC for 12 h were the best in terms of overall meat quality. Quail breast fillets held for 4 h at 4 oC following injection marination were rated highest by the panelists.

Evaluation Of Apoptosis In Peripheral Blood And Milk Immune Cells During Lactation In Dairy Cows With Subclinical Mastitis, Mykola Mykolayovich Zhelavskyi

Turkish Journal of Veterinary & Animal Sciences

The lactation cycle is considered one of the most physiologically demanding periods in dairy cows and is accompanied by substantial immunological remodeling. In the present study, spontaneous apoptosis of lymphocytes, monocytes, and neutrophils was evaluated in clinically healthy Ukrainian Black and White dairy cows (n = 28, aged 3–5 years) during different stages of the lactation cycle: colostrum period (3–5 days), mid‑lactation (90–150 days), drying‑off (5–7 days), and dry period (12–20 days). A further group of 28 cows with subclinical mastitis confirmed by the California Mastitis Test was also included in the study. Peripheral blood and milk samples were collected …

Changes In Mohair Cortisol Concentration And Fiber Growth During Gestation In Angora Goats, Beyzanur Aköz, Erkan Pehli̇van

Turkish Journal of Veterinary & Animal Sciences

The hypothalamic–pituitary–adrenal (HPA) axis plays a central role in regulating long-term stress responses. Keratin-based matrices represent a noninvasive approach for assessing long-term HPA axis activity in farm animals. The present study investigates gestational changes in mohair cortisol concentration and mohair fiber length in Angora goats under routine farm conditions. Clinically healthy does (n = 29; 14 aged 1.5 years and 15 aged 2.5 years) were monitored during the breeding season, and pregnancy was confirmed in 16 does. Mohair samples were collected monthly, fiber length was measured, and cortisol concentrations were quantified using an ELISA. Mohair cortisol concentrations were not significantly …

Carbamate Toxicosis In Carnaby’S Cockatoos (Zanda Latirostris) In A Drying Climate, A Le Souef, Z M. Kissane, David Forshaw, K J. Riley, K Payne, T Hawkins, J Coggins, J M. Shephard, R Vaughn-Higgins, K S. Warren

Climate Science Research Articles

Pesticide exposure poses a growing threat to the health of wild avian populations worldwide. This report documents the first detections of agricultural chemicals in the tissues of wild Carnaby’s cockatoos (Zanda latirostris) in Western Australia. The events, characterised by morbidity and mortality, occurred in a national park near Perth, following periods of elevated summer temperatures over two seasons. Toxicological analysis of liver and digestive tract contents identified multiple pesticides and an herbicide, including methomyl, a highly toxic carbamate insecticide. Hot weather conditions preceding the events potentially increased the cockatoos’ use of alternative water sources for drinking, such as those in …

The Economics Of Calving Interval, David Secrist

All Current Publications

This fact sheet provides information on cow reproductive efficiency to increase ranch profitability. It discusses monitoring the herd, heifers, mature cows, and calf prices.

Market Trends And Challenges For Alabama's Emerging Oyster Aquaculture Industry, Taryn M. Garlock, Quinn Lafontaine, Russell Grice, Andrea M. Tarnecki

Journal of Extension

Different marketing channels influence farm profitability by affecting the costs that producers incur and the prices they receive. This article quantifies oyster sales volume and price by market channel in Alabama's commercial oyster aquaculture sector and assesses challenges to expanding farm businesses. The results show that many oyster producers are selling exclusively through one channel, which raises questions about their resiliency and their capacity to adapt to a dynamic single market. The two most common market channels were processors and distributors. Most growers had a positive outlook on sales growth and showed the greatest interest in expanding sales to distributors, …

Equine Body Condition Scoring Flow Chart: A Field Guide, Robyn Stewart, Carissa Wickens, Brooklyne Wassel

Journal of Extension

The Equine Body Condition Scoring Flow Chart is a visual decision-making tool designed to guide users through the process of evaluating a horse's body condition score (BCS) using the Henneke scale. Accurately assessing BCS is critical for making informed management decisions relating to equine nutrition, health, and training. This tool simplifies the scoring process by breaking it down into step-by-step questions based on clear scoring criteria, anatomical landmarks, and both visual and tactile assessment. This tool can be used regardless of geographic location and benefits a diverse audience of Extension educators, horse owners, 4-H'ers, and equine business owners.

Genomic Vulnerability Of A Threatened Possum In A Biodiversity And Climate Change Hotspot, Grace I. Marsh, Sean James Buckley, Daniel J. White, Adrian F. Wayne, Bryony J. Palmer, Nicola J. Mitchell

Research outputs 2022 to 2026

Spatial variation in the magnitude and pace of climate change impacts means some species will be more affected than others. This includes those occurring within global biodiversity hotspots, regions with exceptional concentrations of endemic species that have often been shaped by long-term climatic stability. Disproportionate levels of human-induced pressure in these areas are threatening much of the biodiversity values that make these biodiversity hotspots exceptional. Southwest Western Australia is a highly fragmented temperate biodiversity hotspot experiencing rapid climate change and supporting many species of threatened mammals. One Critically Endangered arboreal folivore, the western ringtail possum (ngwayir; Pseudocheirus occidentalis), has contracted …

Fisheries Science Update - Pilbara Demersal Scalefish Resource - October 2026, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The Department of Primary Industries and Regional Development (DPIRD) monitors the status of Western Australia’s demersal scalefish resources by undertaking periodic stock assessments on key indicator species.

This summary provides key outcomes of the 2026 Pilbara red emperor stock assessment (Resource Assessment Report No. 12).

Resource Assessment Report No. 12: North Coast Demersal Scalefish Resource: Pilbara Red Emperor 2026 Assessment, Fabian I. Trinnie, Rubie Evans-Powell, Brett Crisafulli, S. A. Hesp, Ainslie Denham, Dion Boddington, Craig L. Skepper

Resource Assessment Reports

Executive Summary

The North Coast Demersal Scalefish Resource (NCDSR) comprises ecological suites of tropical demersal fish species that occur predominantly in inshore (20–250 m deep) and offshore (> 250 m deep) waters of the North Coast Bioregion (NCB). More than 60 demersal species are landed by fisheries operating in the Kimberley and Pilbara regions of the NCB each year, including higher-valued species, such as red emperor (Lutjanus sebae), goldband snapper (Pristipomoides multidens), rankin cod (Epinephelus rankini), and ruby snapper (Etelis boweni), and lower-valued species, such as bluespotted emperor (Lethrinus punctulatus).

The Pilbara Demersal Scalefish Resource (PDSR) is harvested by the …