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Animal Health Research Reviews

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https://www.readbyqxmd.com/read/29231804/impact-of-point-sources-on-antibiotic-resistance-genes-in-the-natural-environment-a-systematic-review-of-the-evidence
#1
Irene Bueno, Jessica Williams-Nguyen, Haejin Hwang, Jan M Sargeant, André J Nault, Randall S Singer
There is a growing concern about the role of the environment in the dissemination of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARG). In this systematic review, we summarize evidence for increases of ARG in the natural environment associated with potential sources of ARB and ARG such as agricultural facilities and wastewater treatment plants. A total of 5247 citations were identified, including studies that ascertained both ARG and ARB outcomes. All studies were screened for relevance to the question and methodology...
December 12, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29224586/a-scoping-review-of-the-evidence-for-efficacy-of-acupuncture-in-companion-animals
#2
Wesley J Rose, Jan M Sargeant, W J Brad Hanna, David Kelton, Dianna M Wolfe, Lee V Wisener
Acupuncture has become increasingly popular in veterinary medicine. Within the scientific literature there is debate regarding its efficacy. Due to the complex nature of acupuncture, a scoping review was undertaken to identify and categorize the evidence related to acupuncture in companion animals (dogs, cats, and horses). Our search identified 843 relevant citations. Narrative reviews represented the largest proportion of studies (43%). We identified 179 experimental studies and 175 case reports/case series that examined the efficacy of acupuncture...
December 11, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29183407/phage-mediated-dissemination-of-virulence-factors-in-pathogenic-bacteria-facilitated-by-antibiotic-growth-promoters-in-animals-a-perspective
#3
Migma Dorji Tamang, Hoon Sunwoo, Byeonghwa Jeon
Addition of sub-therapeutic antibiotics to the feed of food-producing animals for growth promotion and disease prevention has become a common agricultural practice in many countries. The emergence of antibiotic-resistant pathogens is a looming concern associated with the use of antibiotic growth promoters (AGPs) around the world. In addition, some studies have shown that AGPs may not only affect antibiotic resistance but may also stimulate the dissemination of virulence factors via bacteriophages. Although only a few studies are currently available in the literature regarding this topic, in this article we endeavor to provide a perspective about how AGPs would impact the transmission of virulence factors by horizontal gene transfer via phages in a few pathogenic bacterial species significant to livestock production...
November 29, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29166961/antibiotic-resistance-trends-and-mechanisms-in-the-foodborne-pathogen-campylobacter
#4
Yizhi Tang, Liangxing Fang, Changyun Xu, Qijing Zhang
Campylobacter is a major foodborne pathogen and is commonly present in food producing animals. This pathogenic organism is highly adaptable and has become increasingly resistant to various antibiotics. Recently, both the Centers for Disease Control and Prevention and the World Health Organization have designated antibiotic-resistant Campylobacter as a serious threat to public health. For the past decade, multiple mechanisms conferring resistance to clinically important antibiotics have been described in Campylobacter, and new resistance mechanisms constantly emerge in the pathogen...
November 23, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29125097/historical-and-contemporary-aspects-of-maternal-immunity-in-swine
#5
Korakrit Poonsuk, Jeff Zimmerman
Maternal immunity plays a pivotal role in swine health and production because piglets are born agammaglobulinemic and with limited cell-mediated immunity, i.e. few peripheral lymphoid cells, immature lymphoid tissues, and no effector and memory T-lymphocytes. Swine do not become fully immunologically competent until about 4 weeks of age, which means that their compromised ability to respond to infectious agents during the first month of life must be supplemented by maternal immune components: (1) circulating antibodies derived from colostrum; (2) mucosal antibodies from colostrum and milk; and (3) immune cells provided in mammary secretions...
November 10, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29110751/actinobacillus-pleuropneumoniae-biofilms-role-in-pathogenicity-and-potential-impact-for-vaccination-development
#6
Skander Hathroubi, Abraham Loera-Muro, Alma L Guerrero-Barrera, Yannick D N Tremblay, Mario Jacques
Actinobacillus pleuropneumoniae is a Gram-negative bacterium that belongs to the family Pasteurellaceae. It is the causative agent of porcine pleuropneumonia, a highly contagious respiratory disease that is responsible for major economic losses in the global pork industry. The disease may present itself as a chronic or an acute infection characterized by severe pathology, including hemorrhage, fibrinous and necrotic lung lesions, and, in the worst cases, rapid death. A. pleuropneumoniae is transmitted via aerosol route, direct contact with infected pigs, and by the farm environment...
November 7, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29110743/rosmarinic-acid-modes-of-action-medicinal-values-and-health-benefits
#7
Mahmoud Alagawany, Mohamed Ezzat Abd El-Hack, Mayada Ragab Farag, Marappan Gopi, Kumaragurubaran Karthik, Yashpal Singh Malik, Kuldeep Dhama
The supplementation of livestock rations with herbs containing bioactive components, such as rosmarinic acid (RA), have shown promising results as a natural feed additive in promoting growth, productive and reproductive performance, feed utilization, fertility, anti-oxidant status and immunologic indices. Furthermore, RA reportedly reduces the risks of various animal diseases and mitigates side effects of chemical and synthetic drugs. RA is a natural polyphenol present in several Lamiaceae herbs like Perilla frutescens, and RA is becoming an integral component of animal nutrition as it counters the effect of reactive oxygen species induced in the body as a consequence of different kinds of stressors...
November 7, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28641596/types-and-prevalence-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-in-poultry
#8
Eva-Maria Saliu, Wilfried Vahjen, Jürgen Zentek
For several billion years, bacteria have developed mechanisms to resist antibacterial substances. In modern time, antibiotics are frequently used in veterinary and human medicine for prevention and treatment of diseases, globally still also for their growth promoting effects as feed additives. This complex situation has evolved in accelerating development and prevalence of multi-drug resistant bacteria in livestock and people. Extended-spectrum beta-lactamase (ESBL) producing bacteria are resistant to a wide range of ß-lactam antibiotics...
June 23, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28606203/importance-of-bovine-mastitis-in-africa
#9
Thabiso E Motaung, Kiro R Petrovski, Inge-Marie Petzer, Oriel Thekisoe, Toi J Tsilo
Bovine mastitis is an important animal production disease that affects the dairy industry globally. Studies have estimated the prevalence of this disease in approximately 30% of African countries, with the highest prevalence found in Ethiopia. This is despite the wide cattle distribution in Africa, and the largest number of dairy farms and herds in countries such as South Africa, Kenya and Uganda. Furthermore, the estimated financial losses due to direct and indirect impacts of bovine mastitis are lacking in this continent...
June 13, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28776490/global-distributions-and-strain-diversity-of-avian-infectious-bronchitis-virus-a-review
#10
Faruku Bande, Siti Suri Arshad, Abdul Rahman Omar, Mohd Hair-Bejo, Aliyu Mahmuda, Venugopal Nair
The poultry industry faces challenge amidst global food security crisis. Infectious bronchitis is one of the most important viral infections that cause huge economic loss to the poultry industry worldwide. The causative agent, infectious bronchitis virus (IBV) is an RNA virus with great ability for mutation and recombination; thus, capable of generating new virus strains that are difficult to control. There are many IBV strains found worldwide, including the Massachusetts, 4/91, D274, and QX-like strains that can be grouped under the classic or variant serotypes...
June 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28506325/a-proposed-analytic-framework-for-determining-the-impact-of-an-antimicrobial-resistance-intervention
#11
Yrjo T Grohn, Carolee Carson, Cristina Lanzas, Laura Pullum, Michael Stanhope, Victoriya Volkova
Antimicrobial use (AMU) is increasingly threatened by antimicrobial resistance (AMR). The FDA is implementing risk mitigation measures promoting prudent AMU in food animals. Their evaluation is crucial: the AMU/AMR relationship is complex; a suitable framework to analyze interventions is unavailable. Systems science analysis, depicting variables and their associations, would help integrate mathematics/epidemiology to evaluate the relationship. This would identify informative data and models to evaluate interventions...
June 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28485263/alternatives-to-antibiotics-for-maximizing-growth-performance-and-feed-efficiency-in-poultry-a-review
#12
U Gadde, W H Kim, S T Oh, Hyun S Lillehoj
With the increase in regulations regarding the use of antibiotic growth promoters and the rise in consumer demand for poultry products from 'Raised Without Antibiotics' or 'No Antibiotics Ever' flocks, the quest for alternative products or approaches has intensified in recent years. A great deal of research has focused on the development of antibiotic alternatives to maintain or improve poultry health and performance. This review describes the potential for the various alternatives available to increase animal productivity and help poultry perform to their genetic potential under existing commercial conditions...
June 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28155804/the-pathogenesis-of-proventricular-dilatation-disease
#13
Ian Tizard, H L Shivaprasad, Jianhua Guo, Samer Hameed, Judith Ball, Susan Payne
Bornaviruses cause neurologic diseases in several species of birds, especially parrots, waterfowl and finches. The characteristic lesions observed in these birds include encephalitis and gross dilatation of the anterior stomach - the proventriculus. The disease is thus known as proventricular dilatation disease (PDD). PDD is characterized by extreme proventricular dilatation, blockage of the passage of digesta and consequent death by starvation. There are few clinical resemblances between this and the bornaviral encephalitides observed in mammals...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28155803/non-antibiotic-approaches-at-drying-off-for-treating-and-preventing-intramammary-infections-a-protocol-for-a-systematic-review-and-meta-analysis
#14
REVIEW
David Francoz, Vincent Wellemans, Jean-Philippe Roy, Pierre Lacasse, Alfredo Ordonez-Iturriaga, François Labelle, Simon Dufour
Intramammary infection (IMI) treatment and prevention at drying-off is one of the leading causes for using antimicrobials on dairy farms. The objective of the current paper is to describe the protocol used for conducting a systematic review of the literature on non-antibiotic strategies that can be used on dairy cows at dry off to treat and prevent IMI. Relevant literature will be identified using a combination of database search strategies and iterative screening of references. To be included in the review, articles will have to: (1) be published after 1969; (2) be written in English, French, or Spanish; (3) use a study design such as a controlled trial, an observational study, or an experimental study conducted in vivo; (4) be conducted on commercial dairy cows; (5) investigate a non-antibiotic intervention used at dry off; and finally, (6) report on a relevant mastitis outcome...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28155802/towards-an-understanding-of-salmonella-enterica-serovar-typhimurium-persistence-in-swine
#15
REVIEW
Sheila K Patterson, Hyeun Bum Kim, Klaudyna Borewicz, Richard E Isaacson
Salmonella enterica is an important food borne pathogen that is frequently carried by swine. Carrier animals pose a food safety risk because they can transmit S. enterica to finished food products in the processing plant or by contamination of the environment. Environmental contamination has become increasingly important as non-animal foods (plant-based) have been implicated as sources of S. enterica. The prevalence of S. enterica in swine is high and yet carrier animals remain healthy. S. enterica has developed a highly sophisticated set of virulence factors that allow it to adapt to host environments and to cause disease...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/28155801/bacterial-bile-salt-hydrolase-an-intestinal-microbiome-target-for-enhanced-animal-health
#16
REVIEW
Wenjing Geng, Jun Lin
To effectively mitigate antimicrobial resistance in the agricultural ecosystem, there is an increasing pressure to reduce and eliminate the use of in-feed antibiotics for growth promotion and disease prevention in food animals. However, limiting antibiotic use could compromise animal production efficiency and health. Thus, there is an urgent need to develop effective alternatives to antibiotic growth promoters (AGPs). Increasing evidence has shown that the growth-promoting effect of AGPs was highly correlated with the reduced activity of bile salt hydrolase (BSH), an intestinal bacterial enzyme that has a negative impact on host fat digestion and energy harvest; consistent with this finding, the population of Lactobacillus species, the major intestinal BSH-producer, was significantly reduced in response to AGP use...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/27572670/health-relevance-of-intestinal-protein-fermentation-in-young-pigs
#17
R Pieper, C Villodre Tudela, M Taciak, J Bindelle, J F Pérez, J Zentek
The physiological role of the gastrointestinal microbiota has become an important subject of nutrition research in pigs in the past years, and the importance of intestinal microbial activity in the etiology of disease is doubtless. This review summarizes the recent knowledge related to the microbial ecology of protein fermentation and the appearance of protein-derived metabolites along the pig intestine. The amount of fermentable protein depends on factors such as dietary protein concentration, protein digestibility due to secondary or tertiary structure, the interaction with dietary compounds or anti-nutritional factors, and the secretion of endogenous proteins into the gut lumen...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/27534578/protocol-for-diversion-of-confirmed-positive-bulk-raw-milk-tankers-to-calf-ranches-a-review-of-the-pharmacokinetics-of-tetracyclines-and-sulfonamides-in-veal-calves
#18
REVIEW
K D DeDonder, R Gehring, L A Tell, J E Riviere
The tetracyclines (TTC) and sulfonamides are among the most common residues found in bulk raw milk samples. Detection of drug residues in bulk milk (BM) tankers demonstrates that the product is not suitable for human consumption. Discarding BM with residue-contaminated milk is a waste of a valuable commodity, and a repurposing for consumption at calf ranches is a way to recapture some value. However, if calves consuming milk with drug residues are slaughtered for veal, their meat could contain drug residues...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/27246729/the-potential-of-nigerian-bioactive-plants-for-controlling-gastrointestinal-nematode-infection-in-livestock
#19
Isaiah Oluwafemi Ademola
Bioactive compounds from marine and terrestrial organisms have been used extensively in the treatment of many diseases in both their natural form and as templates for synthetic modifications. This review summarizes present knowledge about anthelmintic effects of the extracts of bioactive plants in Nigeria against helminth parasites of ruminants. Plants traditionally used in livestock production are discussed. The main focus is hinged on in vitro and in vivo activities of secondary plant metabolites against nematodes of livestock...
December 2016: Animal Health Research Reviews
https://www.readbyqxmd.com/read/27212192/the-pathogenesis-of-bornaviral-diseases-in-mammals
#20
REVIEW
Ian Tizard, Judith Ball, George Stoica, Susan Payne
Natural bornavirus infections and their resulting diseases are largely restricted to horses and sheep in Central Europe. The disease also occurs naturally in cats, and can be induced experimentally in laboratory rodents and numerous other mammals. Borna disease virus-1 (BoDV-1), the cause of most cases of mammalian Borna disease, is a negative-stranded RNA virus that replicates within the nucleus of target cells. It causes severe, often lethal, encephalitis in susceptible species. Recent events, especially the discovery of numerous new species of bornaviruses in birds and a report of an acute, lethal bornaviral encephalitis in humans, apparently acquired from squirrels, have revived interest in this remarkable family of viruses...
December 2016: Animal Health Research Reviews
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