Edgar Garcia Manzanilla

Edgar Garcia Manzanilla
TEAGASC - The Agriculture and Food Development Authority · Department of Animal & Grassland

BVSc, PhD, MPVM, Dipl. ECPHM

About

185
Publications
41,258
Reads
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2,879
Citations
Citations since 2017
108 Research Items
1919 Citations
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20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
Additional affiliations
January 2014 - present
TEAGASC - The Agriculture and Food Development Authority
Position
  • Research Officer
May 2009 - December 2013
Autonomous University of Barcelona
Position
  • PostDoc Position
May 2006 - May 2009
University of California, Davis
Position
  • PostDoc Position
Education
August 2008 - June 2009
University of California, Davis
Field of study
  • Preventive Medicine
January 2001 - January 2003
Autonomous University of Barcelona
Field of study
  • Animal Science
January 2001 - January 2005
Autonomous University of Barcelona
Field of study
  • Animal Science

Publications

Publications (185)
Article
Full-text available
Antimicrobial resistance is one of the main international health concerns for humans, animals, and the environment, and substantial efforts have focused on reducing its development and spread. While there is evidence for correlations between antimicrobial usage and antimicrobial resistance development, specific information on the effect of heavy me...
Article
Pig production in Ireland has gone through enormous changes during the past 60 yr, from pigs being primarily produced as a sideline on dairy farms, to an industry with one of the highest average herd sizes in Europe. This happened in part due to external pressure on the industry, whereby economies of scale were needed to compete with pigs produced...
Conference Paper
Full-text available
The present study aimed to assess the performance, serum metabolites (SM) and faecal volatile fatty acids (VFA) on grower-finisher (GF) pigs fed unbalanced diets. Two batches (B) of pigs were used at the GF stage. B1 was weighed per pen (n = 20; 11 pigs/pen; 50.1 ± 3.44 kg) at 13 wks of age. B2 was weighed per pen (n = 20; 11 pigs/pen; 87.0 ± 4.10...
Conference Paper
Full-text available
The health and welfare (HW) of pigs can affect feed intake behaviour and performance. The aim of this study was to determine associations between HW and performance of grow-finisher pigs. Sixty pigs born within one week were moved to the finisher accommodation at 11 weeks of age. Pigs were housed in 5 mixed sex pens (n = 12 pigs/ pen; 0.95 m2/pig)...
Poster
Full-text available
Single space, wet-dry feeders are commonly used in commercial pig production. The intention is that feed is available ad-libitum. However, given that pigs prefer to synchronise their behaviour, such feeders likely increase the risk of competition for access to food and this is potentially worse with larger group sizes (GS). The aim of this study wa...
Article
Full-text available
Slow-growing pigs negatively affect production efficiency in conventional pig farms by increasing the occupation time of the facilities and being a limiting factor for the All-In/All-Out swine production systems. This subset of pigs is usually managed with the rest of the pigs, and their nutrient requirements may not be fulfilled. The purpose of th...
Technical Report
Full-text available
The Focus Group on reducing antimicrobial use in poultry farming of the European Innovation Partnership for Agricultural Productivity and Sustainability (EIP-AGRI) addressed the question “How to reduce the use of antimicrobial treatments in poultry in order to fight the spread of antimicrobial resistance?”. The expert group discussed practices, ide...
Article
Full-text available
Objectives: We investigated the financial impact of different prevalence levels of severe tail lesions (STL) during the finisher stage associated with changes in average daily gain (ADG) in farrow-to-finish pig farms. Methods: Prevalence of STL was estimated for 31 farrow-to-finish pig farms. Regression tree analysis was used to identify a thres...
Article
Full-text available
Background Managing body weight (BW) variation is a challenge in farrow-to-finish farms implementing all-in/all-out (AIAO) production systems due to the lack of “off-site” facilities to segregate slow growing pigs (SGP). This case study investigated different approaches to managing BW variation in a farrow-to-finish commercial pig farm with a self-...
Article
Full-text available
Background Low space allowance (SA) and mixing may result in reduced growth performance (GP) and animal welfare issues because of adverse social behaviours directed to pen mates. This could be exacerbated in pens with single space feeders owing to social facilitation of feeding behaviour. The present study aimed to investigate the effect of SA and...
Article
Full-text available
This study aimed to assess the relationship between quantitative assessments of clinical signs of respiratory disease (recorded manually and automatically) and the prevalence of lung lesions at slaughter to validate the use of both in the management of respiratory disease on farm. This was an observational study where pigs (n = 1573) were monitored...
Article
Full-text available
Background: Serological screening is a common method to monitor antibody response to pathogen exposure, but results could vary due to several factors. This study aimed to quantify animal and management related factors associated with variation in antibody levels in finisher pigs at slaughter, in an Irish farrow-to-finish farm endemically infected w...
Article
Antimicrobial resistance is a worldwide public health threat; hence, current trends tend to reduce antimicrobial use in food‐producing animals and to monitor resistance in primary production. This study aimed at evaluating the impact of antimicrobial use and production system on swine farms in the antimicrobial resistance of Campylobacter, Salmonel...
Article
Full-text available
Abstract Antimicrobial resistance has been recognised as one of the most difficult challenges facing human and animal health in recent decades. The surveillance of antimicrobial use in animal health plays a major role in dealing with the growing issue of resistance. This paper reviews current data available on antimicrobial use in farmed animals in...
Article
Full-text available
Pluck lesions are associated with decreased performance in grower-finisher pigs, but their economic impact needs to be further investigated. This study aimed to identify the main pluck lesions and the cut-off value for their prevalence, associated with changes in average daily gain (ADG) during the wean-to-finish period, to simulate their effects o...
Article
Full-text available
The objective of this study was to identify biosecurity practices associated negative status (-) for Mycoplasma hyopneumoniae (MHYO), porcine reproductive and respiratory syndrome virus (PRRSv), and swine influenza virus (SIV) in pig farms. Biosecurity practices were assessed using the Biocheck.UGentTM questionnaire in 54 Irish farrow-to-finish pig...
Article
Full-text available
The objective of this study was to identify biosecurity practices associated with antimicrobial usage (AMU, mg/live body weight, BW) in pig farms. Biosecurity practices were assessed using the Biocheck.UGentTM questionnaire in 54 Irish farrow-to-finish pig farms. For each farm, information on antimicrobial usage in-feed and water and critically imp...
Article
Full-text available
Background Respiratory disease is one of the most important factors impacting pig production worldwide. There is no available information on the prevalence of key pathogens implicated in Irish pig production. The objective of this study was to describe the prevalence of pleurisy, pneumonia, lung abscesses, pericarditis and liver milk spots in finis...
Article
Full-text available
This study aimed (1) to quantify the effects of positive status and vaccination practices for porcine reproductive and respiratory syndrome virus (PRRSv), swine influenza virus (SIV) and Mycoplasma hyopneumoniae (MHYO) on the profitability of farrow-to-finish pig farms and (2) to examine the financial impact of vaccination status in PRRSv and SIV p...
Preprint
Full-text available
Background: Low space allowance (SA) and mixing may result in reduced growth performance (GP) and animal welfare issues because of adverse social behaviours directed to pen mates. This could be exacerbated in pens with single space feeders owing to social facilitation of feeding behaviour. The present study aimed to investigate the effect of SA and...
Article
Full-text available
The need to reduce antimicrobial use (AMU) in livestock production has led to the establishment of national AMU data collection systems in several countries. However, there is currently no consensus on which AMU indicator should be used and many of the systems have defined their own indicators. This study sought to explore the effect of using diffe...
Article
Full-text available
Background There is concern that the use of antimicrobials in livestock production has a role in the emergence and dissemination of antimicrobial resistance in animals and humans. Consequently, there are increasing efforts to reduce antimicrobial use (AMU) in agriculture. As the largest consumer of veterinary antimicrobials in several countries, th...
Technical Report
Full-text available
Background Pathogens such as porcine reproductive and respiratory syndrome virus (PRRSv), swine influenza virus (SIV) and Mycoplasma hyopneumoniae (M. hyo) are common in intensive pig production systems worldwide. These pathogens are part of what is known as the porcine respiratory complex, and are responsible for the diseases commonly known as blu...
Article
Full-text available
The acknowledgment of antimicrobial resistance (AMR) as a major health challenge in humans, animals and plants, has led to increased efforts to reduce antimicrobial use (AMU). To better understand factors influencing AMR and implement and evaluate stewardship measures for reducing AMU, it is important to have sufficiently detailed information on th...
Preprint
Full-text available
Background: Serological screening is a common method to monitor antibody response to pathogen exposure, but results could vary due to several factors. This study aimed to quantify animal and management related factors associated with variation in antibody levels in finisher pigs at slaughter, in an Irish farrow-to-finish farm endemically infected w...
Preprint
Full-text available
Background: Serological screening is a common method to monitor antibody response to pathogen exposure, but results could vary due to several factors. This study aimed to quantify animal and management related factors associated with variation in antibody levels in finisher pigs at slaughter, in an Irish farrow-to-finish farm endemically infected w...
Conference Paper
Full-text available
The study aimed to quantify the effect of space allowance (SA), mixing and phase feeding on productive performance and body lesions (BL) as a proxy for aggression in single wet-dry feeder pens during the grow-finisher stage. Pigs were moved as litters to the finisher accommodation at 11 wks of age and assigned in two SA: 0.96 m2/pig (HSA; n = 15 pe...
Article
Full-text available
This study aimed to (1) investigate the effect of birth and weaning body weight (BW) on performance indicators of grow-finisher pigs and (2) estimate birth and weaning BW cut-off values in order to identify slow growing pigs (SGP). Pigs (n = 144) were classified as SMALL (0.9 ± 0.13 kg) or BIG (1.4 ± 0.20 kg) at birth and re-classified as SMALL (5....
Article
Background Adiponectin (ADPN) is an adipocytokine with insulin‐sensitizing, vascular‐protective, and anti‐inflammatory properties for which concentration changes occur in response to inflammation. Little is known about the regulation of ADPN and the impact of this adipocytokine in septic dogs. Objective We aimed to assess the diagnostic and progno...
Preprint
Full-text available
Background Respiratory disease is one of the most important factors impacting pig production worldwide. However, the literature highlights the multitude of confounding factors complicating the clear attribution of growth impairment to respiratory disease, and the extrapolation of the effects of respiratory disease to a wider population has not been...
Conference Paper
Full-text available
The objective of this study was to identify biosecurity practices associated negative status (-) for Mycoplasma hyopneumoniae (MHYO), porcine reproductive and respiratory syndrome virus (PRRSv), and swine influenza virus (SIV) in pig farms. Biosecurity practices were assessed using the Biocheck.UGentTM questionnaire in 54 Irish farrow-to-finish pig...
Conference Paper
Full-text available
The objective of this study was to identify biosecurity practices associated with antimicrobial usage (AMU, mg/live body weight, BW) in pig farms. Biosecurity practices were assessed using the Biocheck.UGentTM questionnaire in 54 Irish farrow-to-finish pig farms. For each farm, information on antimicrobial usage in-feed and water and critically imp...
Article
Full-text available
Background Primiparous sows (PP) have higher nutrient requirements, fewer piglets born with lower birth weight and growth performance than multiparous sows (MP). The aim of the current study was to investigate the effect of parity of sow (PP or MP) on the growth performance and humoral immune response of piglets. A total of 10 PP and 10 MP (3rd to...
Article
Full-text available
Background Biosecurity is one of the main factors affecting disease occurrence and antimicrobial use, and it is associated with performance in pig production. However, the importance of specific measures could vary depending on the (national) context. The aim of this study was to describe the biosecurity status in a cohort of Irish pig farms, to in...
Article
Full-text available
Background: Radiography is useful to determine left atrial (LA) size when echocardiography is not available. Recently, the authors have described Radiographic Left Atrial Dimension (RLAD) as a new radiographic measurement to assess LA size. The objective of this study was to assess the clinical usefulness of 2 new radiographic measurements to dete...
Article
Background: Sepsis is a complex syndrome that involves an increased oxidative stress status and dysregulation of cholinergic neurotransmission. Paraoxonase-1 (PON-1) and butyrylcholinesterase (BChE) activities have been identified as significant biomarkers to monitor such disorders in human septic patients. Objective: We aimed to determine the d...
Article
Full-text available
Background: Pig performance and risk of disease are associated with production flow. Given the link between health and welfare, it is likely that animal welfare indicators are also associated with production flow. This study investigated the association between production flow and tail, ear and skin lesions on a farm with a purported 'all-in/all-o...
Article
The Teagasc Pig Production Model (TPPM), a stochastic simulation model of a farrow-to-finish pig farm, was developed to investigate effects of changes in production systems on farm profitability. The model simulates, on a weekly basis, the annual production of a farm. Biological [e.g. herd size, number of litters/sow/year, mortality rates (%)], phy...
Article
Full-text available
Background Antibiotics (AB) are an important tool to tackle infectious disease in pig farms; however some research indicates that their frequent mis/over-use may contribute to the development of antibiotic resistance and the WHO has declared that this issue should be addressed. Little is known about the long term consequences of withdrawing prophyl...
Article
Full-text available
Background The dimensions of the left atrium in cases with mitral regurgitation are an indirect measurement of its severity. The objective of this study was to evaluate the value of a new radiographic measurement, the radiographic left atrial dimension (RLAD), for detecting left atrial enlargement (LAE) in dogs. Thirty one dogs without LAE and 46 d...
Article
Dietary supplementation of pig diets with exogenous enzymes has been suggested as a strategy to increase nutrient digestibility and improve feed efficiency in grow-finisher pigs. However, inconsistent results are found in the literature. Ingredient composition of the diets is one of the most important sources of variation that may affect enzyme eff...
Article
Full-text available
Hospitalized dogs are predisposed to undernutrition, which can potentially affect outcome. This study evaluated the prevalence of undernutrition in hospitalized dogs (measured as loss of body condition score, BCS and body weight, BW) and studied the risk factors that affect nutritional status, and outcome (discharge or death). Data was collected pr...
Article
Full-text available
This study aimed to (1) identify cross-fostering (CF) practices employed on a commercial farm; (2) characterize CF pigs according to litter of origin traits, and (3) investigate the implications of CF practices on pig mortality, performance and welfare. This was an observational study whereby pigs were managed according to normal farming practice....
Article
The number of cervical vertebrae in mammals is almost constant at seven, regardless of their neck length, implying that there is selection against variation in this number. Homebox (Hox) genes are involved in this evolutionary mammalian conservation, and homeotic transformation of cervical into thoracic vertebrae (cervical ribs) is a common phenoty...