Erwin A. PazUniversity of Western Australia | UWA
Erwin A. Paz
PhD
About
28
Publications
5,506
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148
Citations
Citations since 2017
Introduction
Erwin Paz is a Doctor of Veterinary Medicine (DVM), with an MSc and Ph.D. in Molecular Biology. In 2017 he was awarded a post-doctoral fellowship to work on a long-term solution for the helminth-diarrhoea-flystrike at UWA. Currently, he is preparing, generating, and analysing data from 16S amplicon by using Next Generation Sequence at The Marshall Centre for Infectious Diseases Research and Training, University of Western Australia.
Skills and Expertise
Additional affiliations
December 2018 - December 2021
August 2016 - present
January 2014 - March 2016
Education
August 2015 - September 2016
Field of study
- Part of research group in Animal Science, Laboratory of Animal Production at Faculty of Agriculture and Forestry Sciences focuses on animal breeding, biotechnology and genomic selection
Publications
Publications (28)
Background
Gastrointestinal (GIT) helminthiasis is a global problem that affects livestock health, especially in small ruminants. One of the major helminth parasites of sheep and goats, Teladorsagia circumcincta, infects the abomasum and causes production losses, reductions in weight gain, diarrhoea and, in some cases, death in young animals. Contr...
Gastrointestinal helminths are a global health issue, for humans as well as domestic animals. Most studies focus on the tissues that are infected with the parasite, but here we studied the ileum, a tissue that is rarely infected by helminths. We tested whether inflammation in the ileum contributes to the development and severity of diarrhoea, by co...
Background
Helminth parasitism is a world-wide problem in livestock industries, with major impacts on health, welfare and productivity. The role of the gut microbiota in host-helminth interactions in ruminants has been extensively examined and the present study added to this body of knowledge by assessing the effects of resistance and susceptibilit...
Gastrointestinal helminths infect livestock causing health problems including severe diarrhoea. To explore the underlying biological mechanisms relating to development and control of diarrhoea, we compared 4 sheep that were susceptible to development of diarrhoea with 4 sheep that were diarrhoea-resistant. Transcriptomes in the tissues where the pa...
Frankfurters are one of the most demanded meat products in the world due to their low cost and good taste. However, they contain up to 30% animal fat, which is negative for the consumer’s health. Moreover, high-fat contents could also decrease frankfurter sensory properties, since it accelerates the rancidity of the products. This fact is highly de...
This study aimed to test the hypothesis that lower levels of pennyroyal (Mentha pulegium L.) extract can improve growth traits, blood constitutes, immunity and microflora in broilers up to 42-days production cycle. A total of 300 broiler chicks (Ross 308) were randomly distributed into five dietary treatments, with three replicates per treatment (2...
Abstract
Context. Breech strike is a serious disease for wool sheep. Skin wrinkle and dags are known predisposing factors for breech strike; however, a large part of the variation among sheep is unknown.
Aims. We studied the natural diversity and difference in microbial populations in the skin around the breech area in Merino sheep genetically resi...
Background
Helminth parasitism is a world-wide problem in livestock industries, with major impacts on health, welfare and productivity. It has been the subject of decades of research, but little attention has been paid to the role of the gut microbiota in the responses to infection. The present study characterized the microbiome along the gastro-in...
Appropriate supplementation of trace minerals is fundamental to enhance the metabolic status of growing animals and promote an adequate expression of genetic potential. Zinc (Zn) is an essential mineral fundamental in many biological processes that are related to growth, energy balance and immunity. The aim of the present study was to analyse the e...
Supplementation with mesquite pods has a positive effect on productive performance in small ruminants, but its response varies according to the level of incorporation and processing of mesquite pods.
The influence of dietary L-carnitine and lysine (Lys)-methionine (Met) levels on productive performance, haematology and triiodothyronine hormone levels of broilers was investigated. Dietary treatments included different L-carnitine (0, 50 and 100 mg/kg) and Lys-Met (0%, 10% and 20% over National Research Council (NRC) (1994) recommendation levels)...
Despite being recognised primarily as a motor disorder, gastrointestinal (GI)
dysfunction is one of the first symptoms reported by individuals with
Parkinson’s disease (PD). This is believed to be due to a shift in microbiota
composition towards an unbalanced, dysbiotic nature, with increased
intestinal inflammation. Furthermore, characteristic Lew...
Bacterial resistance is the mechanism through which the bacteria can decrease the action of antimicrobial agents. Studies have reported an antimicrobial action of Luma apiculata, however, there are no in vitro studies demonstrating the effect of this plant against multidrug-resistant bacteria. The objective of this study was to explore the antimicr...
Bacterial resistance is the mechanism through which the bacteria can decrease the action of antimicrobial agents. Studies have reported an antimicrobial action of Luma apiculata, however, there are no in vitro studies demonstrating the effect of this plant against multidrug-resistant bacteria. The objective of this study was to explore the antimicr...
Knowledge of genetic diversity and relationship among domestic animals is important for sustainable strategies and conservation plans evaluating genetic diversity within and across breeds. Due to the lack of studies focusing on the genetic relationship between the European and South American creole populations, we performed comprehensive genetic an...
A total of 225 day-old male broiler chicks (Ross-308) were randomly allocated to five
treatment groups, with three replicates in a completely randomized design for 42 days. Birds were
fed a basal-diet supplemented with: no additive (control-diet), multi-strain probiotic (Lactobacillus
acidophilus, Lactobacillus casei, Enterococcus faecium and Bifid...
Antimicrobial growth promoters (AGPs) have been used in animal production for the last few decades to improve the growth and reduce mortality. The use of AGPs in controlling pathogenic microorganisms is successful to a large extent [1]; however, acquired resistance of antimicrobial agents is a major concern [2] and has been phased out by the Europe...
The aim of this study was to investigate the effects of dietary fish oil (FO) time-response on the fatty acid profile, cholesterol levels and sperm cryosurvival in ram semen. Criollo Araucano rams were randomly assigned to two groups (n = 4) according to the type of supplementation: a control group without FO and a supplemented group fed a diet wit...
Additional supporting information may be found in the online version of this article. Figure S1 qPCR annealing temperature (Ta) gradient opti-misation from for duplex PCR using primer pairs L10 and Cgsili44 with DNA prepared according to the new SDS protocol. (a) PCR products run on agarose gel with Ta as indicated. M, size ladder. (b) Amplificatio...
In several sheep breeds, polymorphisms have been identified in genes that present major effects on ovulation rate. Different single nucleotide polymorphisms (SNP) in growth differentiation factor 9 gene (GDF9) can cause increased prolificacy and infertility in sheep. The aim of this study was to identify the presence of the FecG1 (G1) and FeGH (G8)...
References1 Barzegari A. et al. (2010) Reprod Domest Anim 45, 666–9.2 Galloway S.M. et al. (2000) Nat Genet 25, 279–83.3 Hanrahan J.P. et al. (2004) Biol Reprod 70, 900–9.4 Wilson T. et al. (2001) Biol Reprod 64, 1225–35.5 Paz E. et al. (2014) Arch Med Vet 46, 327–31.6 Silva B.D. et al. (2010) Anim Genet 42,89–92.7 Drummond A. et al. (2012) Geneiou...
Polymorphisms in major gene effect related to reproductive activity have been described in sheep. Mutations located in the GDF9 gene have been associated with increased ovulation rate and litter size. GDF9 factor is secreted by the oocyte and is a member of the family of transforming growth factors (TGF-β) located on chromosome 5. The aim of this s...
En la especie ovina se han descrito una serie de polimorfismos en genes de efecto mayor relacionados con la actividad reproductiva. Las mutaciones ubicadas en el gen de efecto mayor GDF9 se han asociado con el incremento de la tasa ovulatoria y el tamaño de la camada. GDF9 es un factor celular secretado por el ovocito y es miembro de la familia de...
Melatonin is a hormone that regulates circadian rhythms and many of the reproductive aspects of mammals and is secreted by the pineal gland during the hours of absence of light. This hormone has high affinity receptors coupled to G-like proteins, termed MT1. A polymorphism of the sequence coding for these receptors was involved in the control of se...
Melatonin is a hormone that regulates circadian rhythms and many of the reproductive aspects of mammals and is secreted by the pineal gland during the hours of absence of light. This hormone has high affinity receptors coupled to G-like proteins, termed MT1. A polymorphism of the sequence coding for these receptors was involved in the control of se...
Projects
Projects (2)
To evaluate the effect of dietary inclusion of cochayuyo (Durvillaea antarctica) meal and agar-agar waste on the microbiome and its relationship with productive parameters, nutritional value and quality traits of lamb meat.
i) Reduce dependence on drugs to control gastrointestinal parasites.
ii) Reduce ‘greenhouse gas intensity’ (kg methane per kg product).
iii) Improve the ethics of the sheep industry.
Importantly, all of the work is central to the concept of ‘Clean, Green and Ethical Management’ of livestock, the vision that underpins all of our research in livestock science and is relevant in all countries around the world.
