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https://www.readbyqxmd.com/read/29786527/retrospective-analysis-of-bluetongue-farm-risk-profile-definition-based-on-biology-farm-management-practices-and-climatic-data
#1
Stefano Cappai, Federica Loi, Annamaria Coccollone, Marino Contu, Paolo Capece, Michele Fiori, Simona Canu, Cipriano Foxi, Sandro Rolesu
Bluetongue (BT) is a vector-borne disease transmitted by species of Culicoides midges (Diptera: Ceratopogonidae). Many studies have contributed to clarifying various aspects of its aetiology, epidemiology and vector dynamic; however, BT remains a disease of epidemiological and economic importance that affects ruminants worldwide. Since 2000, the Sardinia region has been the most affected area of the Mediterranean basin. The region is characterised by wide pastoral areas for sheep and represents the most likely candidate region for the study of Bluetongue virus (BTV) distribution and prevalence in Italy...
July 1, 2018: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29786522/a-survey-of-experiences-of-uk-cattle-and-sheep-farmers-with-anthelmintic-prescribers-are-best-practice-principles-being-deployed-at-farm-level
#2
Easton Stephanie, L Pinchbeck Gina, J Bartley David, E Hodgkinson Jane, B Matthews Jacqueline
Helminths are common pathogens of ruminants. These are controlled by anthelmintics; however, resistance is a major issue. More sustainable practices need to be deployed to protect anthelmintic efficacy. There is no published information on how farmer/prescriber interactions at anthelmintic purchase shape application of best practice on-farm. To determine experiences of UK ruminant farmers as they relate to anthelmintic purchasing/provision of best practice advice at the point-of-sale, an online survey was distributed...
July 1, 2018: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29785618/a-quick-and-simple-benchtop-vortex-egg-disruption-approach-for-the-molecular-diagnosis-of-fasciola-hepatica-from-ruminant-faecal-samples
#3
Nichola Eliza Davies Calvani, Tina Cheng, Christine Green, Patrick Hughes, Emily Kwan, Elizabeth Maher, Russell David Bush, Jan Šlapeta
Commonly employed diagnostic methods for Fasciola spp., such as a traditional sedimentation and faecal egg count, or a commercially available coprological ELISA, have limitations in their sensitivity or ability to differentiate species. A reliable DNA isolation method coupled with real-time PCR addresses these issues by providing highly sensitive and quantitative molecular diagnosis from faecal samples. The current study evaluated a standard benchtop vortex for F. hepatica egg disruption in sheep and cattle faecal samples and determined the minimum faecal egg load required for a positive result from un-concentrated (raw) faecal samples...
May 22, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29785617/heat-shock-but-not-temperature-is-a-biological-trigger-for-the-exsheathment-of-third-stage-larvae-of-haemonchus-contortus
#4
Kiliana Bekelaar, Tania Waghorn, Michael Tavendale, Catherine McKenzie, Dave Leathwick
Gastrointestinal parasites are an important health issue in grazing ruminants. Understanding the processes involved in the transition from the free living to the parasitic life stage of these nematodes is one avenue to identifying new targets amenable to future intervention. The transition to parasitism is initiated by exsheathment and is triggered by the sudden change in environment after ingestion of the infective larva by the host. Two major changes in environment are the increases in temperature and carbon dioxide (CO2 ) levels...
May 21, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29785277/intake-and-performance-of-lambs-finished-in-feedlot-with-wet-brewer-s-grains
#5
Mônica Feksa Frasson, Sérgio Carvalho, Gustavo Jaurena, Aliei Maria Menegon, Marcelo Machado Severo, Juliano Henriques da Motta, William Soares Teixeira
Background: The use of agroindustrial by-products in ruminant nutrition to be an interesting alternative in order to reduce production costs and environmental impacts arising from the inadequate destination of residues. The initial step of beer production yields a large volume of wet brewer's grains all year around, which is available at a low cost and has a high nutritional quality, and hence a big potential for animal production. Methods: Twenty-four Suffolk non-castrated male lambs, from simple parturition were kept in individual spots and allocated to four treatments constituted by four levels of substitution of sorghum silage by WBG (i...
2018: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/29785087/transcriptomic-impacts-of-rumen-epithelium-induced-by-butyrate-infusion-in-dairy-cattle-in-dry-period
#6
Ransom L Baldwin, Robert W Li, Yankai Jia, Cong-Jun Li
The purpose of this study was to evaluate the effects of butyrate infusion on rumen epithelial transcriptome. Next-generation sequencing (NGS) and bioinformatics are used to accelerate our understanding of regulation in rumen epithelial transcriptome of cattle in the dry period induced by butyrate infusion at the level of the whole transcriptome. Butyrate, as an essential element of nutrients, is a histone deacetylase (HDAC) inhibitor that can alter histone acetylation and methylation, and plays a prominent role in regulating genomic activities influencing rumen nutrition utilization and function...
2018: Gene Regulation and Systems Biology
https://www.readbyqxmd.com/read/29781647/autonomic-regulation-in-response-to-stress-the-influence-of-anticipatory-emotion-regulation-strategies-and-trait-rumination
#7
Selene Nasso, Marie-Anne Vanderhasselt, Ineke Demeyer, Rudi De Raedt
According to the neurocognitive framework for regulation expectation, adaptively regulating emotions in anticipation of a stressful event should help individuals deal with the stressor itself. The goal of this study was twofold: first, the authors compared the influence of adaptive versus maladaptive anticipatory emotion regulation (ER) on the autonomic system during anticipation of, confrontation with, and recovery from a stressor; second, they explored whether trait rumination moderated this relationship...
May 21, 2018: Emotion
https://www.readbyqxmd.com/read/29781629/finding-peace-of-mind-when-there-still-is-so-much-left-undone-a-diary-study-on-how-job-stress-competence-need-satisfaction-and-proactive-work-behavior-contribute-to-work-related-rumination-during-the-weekend
#8
Oliver Weigelt, Christine J Syrek, Antje Schmitt, Tina Urbach
Unfinished work tasks have been identified as a significant job-related stressor in recent occupational stress research. Extending this research, we examine how and when not finishing one's tasks by the end of the work week affects work-related rumination at the weekend. Drawing on control theory, we examined competence need satisfaction as a mediating mechanism that links unfinished tasks at the end of the work week to work-related rumination at the weekend. Furthermore, we scrutinized whether proactive work behavior within the work week may neutralize the detrimental effects of unfinished tasks on competence need satisfaction and rumination...
May 21, 2018: Journal of Occupational Health Psychology
https://www.readbyqxmd.com/read/29781333/coping-with-post-war-mental-health-problems-among-survivors-of-violence-in-northern-uganda-findings-from-the-ways-study
#9
Kennedy Amone-P'Olak, Bernard Omech
Cognitive emotion regulation strategies and mental health problems were assessed in a sample of war-affected youth in Northern Uganda. Univariable and multivariable regression models were fitted to assess the influence of CERS on mental health problems. Maladaptive cognitive emotion regulation strategies (e.g., rumination) were significantly associated with more mental health problems while adaptive cognitive emotion regulation strategies (e.g., putting into perspective) were associated with reporting fewer symptoms of mental health problems...
May 1, 2018: Journal of Health Psychology
https://www.readbyqxmd.com/read/29780372/highly-promiscuous-oxidases-discovered-in-the-bovine-rumen-microbiome
#10
Lisa Ufarté, Gabrielle Potocki-Veronese, Davide Cecchini, Alexandra S Tauzin, Angeline Rizzo, Diego P Morgavi, Bernard Cathala, Céline Moreau, Megane Cleret, Patrick Robe, Christophe Klopp, Elisabeth Laville
The bovine rumen hosts a diverse microbiota, which is highly specialized in the degradation of lignocellulose. Ruminal bacteria, in particular, are well equipped to deconstruct plant cell wall polysaccharides. Nevertheless, their potential role in the breakdown of the lignin network has never been investigated. In this study, we used functional metagenomics to identify bacterial redox enzymes acting on polyaromatic compounds. A new methodology was developed to explore the potential of uncultured microbes to degrade lignin derivatives, namely kraft lignin and lignosulfonate...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29779558/short-communication-variability-in-fermentation-end-products-and-methanogen-communities-in-different-rumen-sites-of-dairy-cows
#11
ZhiYuan Ma, Rong Wang, Min Wang, XiuMin Zhang, HongXiang Mao, ZhiLiang Tan
The objective of this study was to investigate differences in fermentation and methanogen communities in samples collected from 3 sites in the rumen of dairy cows. The study involved 3 ruminally cannulated nonlactating Chinese Holstein dairy cows fed a diet of 40% forage and 60% concentrate feeds. Four handfuls of whole ruminal contents were collected from the cranial sac, middle of the ventral sac, and caudodorsal blind sac of the rumen of the cows at 0, 2.5, and 6 h after the morning feeding. Concentrations of VFA, ammonia, and dissolved methane and hydrogen were analyzed...
June 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29779496/invited-review-improving-feed-efficiency-of-beef-cattle-the-current-state-of-the-art-and-future-challenges
#12
D A Kenny, C Fitzsimons, S M Waters, M McGee
Improvements in feed efficiency of beef cattle have the potential to increase producer profitability and simultaneously lower the environmental footprint of beef production. Although there are many different approaches to measuring feed efficiency, residual feed intake (RFI) has increasingly become the measure of choice. Defined as the difference between an animal's actual and predicted feed intake (based on weight and growth), RFI is conceptually independent of growth and body size. In addition, other measurable traits related to energy expenditure such as estimates of body composition can be included in the calculation of RFI to also force independence from these traits...
May 21, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29778634/genetic-characterization-of-anaplasma-marginale-strains-from-tunisia-using-single-and-multiple-gene-typing-reveals-novel-variants-with-an-extensive-genetic-diversity
#13
Mourad Ben Said, Alaa Ben Asker, Hanène Belkahia, Raoua Ghribi, Rachid Selmi, Lilia Messadi
Anaplasma marginale, which is responsible for bovine anaplasmosis in tropical and subtropical regions, is a tick-borne obligatory intraerythrocytic bacterium of cattle and wild ruminants. In Tunisia, information about the genetic diversity and the phylogeny of A. marginale strains are limited to the msp4 gene analysis. The purpose of this study is to investigate A. marginale isolates infecting 16 cattle located in different bioclimatic areas of northern Tunisia with single gene analysis and multilocus sequence typing methods on the basis of seven partial genes (dnaA, ftsZ, groEL, lipA, secY, recA and sucB)...
May 12, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29778485/meta-analysis-of-2-hydroxy-4-methylthio-butanoic-acid-supplementation-on-ruminal-fermentation-milk-production-and-nutrient-digestibility
#14
X Feng, R R White, H A Tucker, M D Hanigan
Methionine is considered one of the most important essential AA for milk protein synthesis in dairy cows. Supplementation of unprotected, free Met is nearly 100% degraded by ruminal microorganisms, which complicates supplementation. 2-Hydroxy-4-methylthio-butanoic acid (HMTBa) can be converted to Met in the body and is used as a Met source in dairy production. However, results of published studies assessing the effects of supplementing Met sources, including HMTBa, on performance variables are inconsistent...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778483/effect-of-replacing-maize-silage-with-red-clover-silage-in-the-diet-on-milk-fatty-acid-composition-in-cows
#15
Franziska Schulz, Edwin Westreicher-Kristen, Joachim Molkentin, Karin Knappstein, Andreas Susenbeth
This study aimed to evaluate the effect of replacing maize silage plus soybean meal with red clover silage (RCS) plus wheat on the fatty acid (FA) profile in the milk fat of cows. Forty-four lactating German Holstein cows were used in a 4 × 4 Latin square design with 21-d periods composed of 13 d of adaptation to diets followed by an 8-d sampling phase. Experimental diets offered as total mixed ration consisted of a constant forage-to-concentrate ratio (75:25) with target proportions of RCS to maize silage of 15:60 (RCS15 ), 30:45 (RCS30 ), 45:30 (RCS45 ), and 60:15 (RCS60 ) on a dry matter basis...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778479/an-in-vivo-stable-isotope-based-approach-for-assessment-of-absorbed-amino-acids-from-individual-feed-ingredients-within-complete-diets
#16
K A Estes, R R White, P S Yoder, T Pilonero, H Schramm, H Lapierre, M D Hanigan
Accurate assessment of the nutritional content of feed ingredients is required for precise diet formulation. Characterizing ingredients in terms of absorption and digestibility of individual AA is challenging, and this information often relies on indirect methods. The purpose of this research was to evaluate an in vivo stable isotope-based method of determining plasma entry rates of individual AA from feather meal (FM), blood meal (BM), and a rumen-protected AA (RPMet). Abomasal infusions of unprotected Ile, Leu, Met, and sodium caseinate were used as control treatments to assess technique reliability and accuracy...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778475/performance-nutritional-behavior-and-metabolic-responses-of-calves-supplemented-with-forage-depend-on-starch-fermentability
#17
S Mojahedi, M Khorvash, G R Ghorbani, E Ghasemi, M Mirzaei, F Hashemzadeh-Cigari
This study evaluated the interactive effects of forage provision on performance, nutritional behavior, apparent digestibility, rumen fermentation, and blood metabolites of dairy calves when corn grains with different fermentability were used. Sixty 3-d-old Holstein calves were randomly assigned to 1 of 4 treatments in a 2 × 2 factorial arrangement. Dietary treatments were (1) steam-flaked (SF) corn without alfalfa hay (AH) supplementation (SF-NO), (2) SF corn with AH supplementation (SF-AH), (3) cracked (CR) corn without AH supplementation (CR-NO), and (4) CR corn with AH supplementation (CR-AH)...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778467/short-communication-effect-of-abomasal-inorganic-phosphorus-infusion-on-phosphorus-absorption-in-large-intestine-milk-production-and-phosphorus-excretion-of-dairy-cattle
#18
X Feng, P P Ray, J P Jarrett, L Karpinski, B Jones, K F Knowlton
The objective of the study was to evaluate the effect of inorganic phosphorus (Pi) infusion on P absorption in large intestine, milk production, and phosphorus excretion. Four ruminally and ileally cannulated crossbred cows were used in a 4 × 4 Latin square with 21-d periods. Cows were fed a total mixed ration containing 0.21% P, providing 50% of the cows' P requirement. Cobalt-EDTA was used as marker to measure large intestine digesta flow. On d 13 to 21 of each period, each cow was infused daily with 0, 20...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778209/ovine-mannheimia-haemolytica-isolates-from-lungs-with-and-without-pneumonic-lesions-belong-to-similar-genotypes
#19
Andrés García-Alvarez, José Francisco Fernández-Garayzábal, Fernando Chaves, Chris Pinto, Dolores Cid
This study investigated the genetic characteristics of 121 ovine Mannheimia haemolytica isolates from lungs with (n = 75) and without pneumonic lesions (n = 46) using multilocus sequence typing (MLST), virulence-associated gene typing and pulsed-field gel electrophoresis (PFGE). Twelve STs were identified with most isolates (81%) belonged to ST16, ST28 and ST8. Analysis of the M. haemolytica MLST Database indicate a wide distribution of these genotypes in small ruminants, never reported in bovine isolates...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29778205/immunopathological-changes-and-apparent-recovery-from-infection-revealed-in-cattle-in-an-experimental-model-of-johne-s-disease-using-a-lyophilised-culture-of-mycobacterium-avium-subspecies-paratuberculosis
#20
Douglas J Begg, Karren M Plain, Kumudika de Silva, Ratna Gurung, Alison Gunn, Auriol C Purdie, Richard J Whittington
Johne's disease (JD) or paratuberculosis is an economically significant, chronic enteropathy of ruminants caused by Mycobacterium avium subspecies paratuberculosis (MAP). Experimental models of JD in cattle are logistically challenging due to the need for long term monitoring, because the clinical disease can take years to manifest. Three trials were undertaken, the largest involving 20 cattle exposed orally to a low dose of C strain MAP and 10 controls studied for 4.75 years. Frequent blood and faecal sampling was used to monitor immunological and infection parameters, and intestinal biopsies were performed at two time points during the subclinical disease phase...
June 2018: Veterinary Microbiology
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