259 – Modeling heat and Carbon Dioxide production of a broiler house at hourly time step (Research paper – Wejden – 2019)

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259 Research paper – Wejden – 2019 – Modeling heat and Carbon Dioxide production of a broiler house at hourly time step

In Significant Impact Groups: Housing and welfare \ Climate
Species targeted: Poultry;
Age: Not stated;
Summary:
Models of heat production of broilers are used to design the thermal equipment to optimize climate control. The reference models are now around fifteen years old. Daily values of heat productions are deduced from the live weight of broilers and do not integrate the diversity of livestock systems and the genetic progress’s evolution. Animal welfare and environmental issues now require simulations at an hourly time step or even shorter. Our objective is to propose an hourly model of heat, carbon dioxide and water vapor productions incorporating the zoo technical parameters specific of a commercial batch of broilers. To update the reference equations, experiments were performed so that models replicated conditions similar to commercial farming. We propose a new model design for heat production. The perspectives are to apply this modeling to climate control and thermal design of broiler houses.

Where to find the original material: https://www.itavi.asso.fr/content/modelisation-horaire-des-productions-de-chaleur-et-de-dioxyde-de-carbone-en-elevage-de;
Country: FR

258 – Assessment of the innocuity and immunostimulant properties of plant extracts in chicken cell lines (Research paper – Allimonnier, 2019)

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258 Research paper – Allimonnier – 2019 – Assessment of the innocuity and immunostimulant properties of plant extracts in chicken cell lines

In Significant Impact Groups: Specific alternatives \ Immunomodulators
Species targeted: Poultry;
Age: Not stated;
Summary:
The use of plant extracts in poultry feed is a promising approach to reinforce the animals’ natural defenses. However, this approach is limited by the lack of robust references and solid methodological bases. Our objective was to develop and test a simple, reliable and repeatable method to determine capacities of plant extracts in stimulating the natural defenses of poultry. A bibliographic study helped identifying 4 plant extracts: Astragalus, Echinacea, Ginseng and Melissa. We have shown that Astragalus, Echinacea, Ginseng and Melissa had little or no cytotoxic effects. Results from experiments with Melissa and Ginseng suggest these may have immune stimulating activities. The Melissa and Ginseng extracts appear to be non-cytotoxic candidates, capable of stimulating the natural defenses of poultry.

Where to find the original material: https://hal.inrae.fr/hal-02734430;
Country: FR

255 Joining advising and innovative training in order to reduce antibiotic use in the dairy sector (Research paper – Le Guenic, 2018)

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255 Research paper – Le Guenic – 2018 – Joining advising and innovative training in order to reduce antibiotic use in the dairy sector

In Significant Impact Groups: AMU reduction strategies \ Prudent use AB
Species targeted: Dairy;
Age: Not stated;
Summary:
A training-program involving virtual classes and personalized advice on farm has been evaluated by an exposed/non exposed study on two themes: control of clinical mastitis and implementation of selective dry cow therapy. Exposed farmers significantly improved their knowledge regarding intramammary infections and selective dry-cow therapy compared to non-exposed farmers. Those from the “control of clinical mastitis” group have decreased the use of antibiotics against mastitis during lactating and dry period from 4 days/year/cow of antibiotic treatment to 3.1. Main messages are : precise knowledge on the role of antibiotics at drying-off, mastering use of a teatseal, respect of low cellular thresholds to sort the cows out.

Where to find the original material: http://www.journees3r.fr/IMG/pdf/texte_2_reduction_intrants_m-le_guenic-2.pdf;
Country: FR

195 Antimicrobial Resistance Profiles of Campylobacter spp Isolated from Broiler Chicken Meat of Estonian Latvian and Lithuanian Origin at Estonian Retail (Research paper – Maesaar, 2016)

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195 Research paper – Maesaar- 2016 – Antimicrobial Resistance Profiles of Campylobacter spp Isolated from Broiler Chicken Meat of Estonian Latvian and Lithuanian Origin at Estonian Retail

In Significant Impact Groups: AMU reduction strategies \ Monitoring and surveillance Disease/health
Species targeted: Poultry;
Age: Not stated;
Summary:
This study shows that antimicrobial susceptibility results indicate that the use of antimicrobial agents, particularly fluoroquinolones, in Estonian broiler chicken production has been reduced during recent years. This can be associated with the policies in restrictive use of antimicrobials implemented by the European Commission in 2006. Resistances to one or more antimicrobials occurred significantly less frequently in the products of Estonian origin than in the products of Latvian and Lithuanian origin available at Estonian retail. It was found that problems caused by the inappropriate use of antimicrobials extend beyond the country in which a food originates; therefore, the origin of broiler chicken meat may pose different risks for human population.

Where to find the original material: https://onlinelibrary.wiley.com/doi/full/10.1111/zph.12208; https://doi.org/10.1111/zph.12208
Country: EE; LV; FI; LT

191 A Comparison of Pig Farmers and Veterinarians Perceptions and Intentions to Reduce Antimicrobial Usage in Six European Countries (Research paper – Visschers, 2016)

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191 Research paper – Visschers – 2016 – A Comparison of Pig Farmers and Veterinarians Perceptions and Intentions to Reduce Antimicrobial Usage in Six European Countries

In Significant Impact Groups: Prudent use AB \ Farmer; AMU reduction strategies
Species targeted: Pigs;
Age: Young; Adult;
Summary:
To manage the antimicrobial (AM) resistance problem, the usage of AM should be reduced in pig farming, as well as in other areas. A mail survey among pig farmers (N = 1,294) and an online survey among veterinarians (N = 334) was done in Belgium, Denmark, France, Germany, Sweden and Switzerland. The results showed that farmers and veterinarians had similar perceptions of the risks and benefits of AM usage. Veterinarians were more optimistic than pig farmers about reducing AM usage in pig farming. Farmers believed that their efficacy over AM reduction was relatively high. Farmers’ intention to reduce AM usage and veterinarians’ self-reported reduction behaviors were connected with factors concerning the feasibility of reducing AM usage. To promote prudent AM usage, pig farmers should learn and experience how to reduce usage by applying alternative measures, whereas veterinarians should strengthen their advisory role and competencies to support and educate farmers.

Where to find the original material: https://www.ncbi.nlm.nih.gov/pubmed/26890125; https://doi.org/10.1111/zph.12260
Country: BE; CH; DK; SE; FR, DE

190 Higher perceived risks of antimicrobial use are related to lower usage among pig farmers in four European countries (Research paper – Visschers, 2016)

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190 Research paper – Visschers – 2016 – Higher perceived risks of antimicrobial use are related to lower usage among pig farmers in four European countries

In Significant Impact Groups: Prudent use AB \ Farmer; AMU reduction strategies
Species targeted: Pigs;
Age: Young; Adult;
Summary:
It is important to understand pig farmers’ motivators and the barriers to antimicrobial usage (AMU) on their farms. Pig farmers’ self-estimated levels of AMU, their perceived benefits, risks and the need for antimicrobials were studied in a cross-sectional survey in Belgium, France, Germany and Sweden. These perceptions were compared between the four countries and related them to pig farmers’ actual AMU. Results showed that farmers using more antimicrobials also estimated their own usage as higher. Farmers perceived many benefits but few risks of AMU in pig farming. Some significant cross-country differences in farmers’ perceptions were found, but they were relatively small. Country differences as well as perceived risks of antimicrobials served to predict farmers’ actual AMU. Promoting prudent AMU should focus on the structural differences in pig farming and veterinary medicine among countries. In addition, interventions aiming at reducing AMU should increase farmers’ awareness of the risks of extensive AMU.

Where to find the original material: https://www.ncbi.nlm.nih.gov/pubmed/27553605; https://doi.org/10.1136/vr.103844
Country: BE; SE; CH; FR; DE

189 Perceptions of antimicrobial usage antimicrobial resistance and policy measures to reduce antimicrobial usage (Research paper – Visschers, 2015)

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189 Research paper – Visschers – 2015 – Perceptions of antimicrobial usage antimicrobial resistance and policy measures to reduce antimicrobial usage

In Significant Impact Groups: Prudent use AB \ Farmer; AMU reduction strategies
Species targeted: Pigs;
Age: Young; Adult;
Summary:
A survey of pig farmers (N = 281) was performed in Belgium, France, Germany, Sweden and Switzerland. Generally, farmers perceived their own antimicrobial usage as lower than that of their fellow countrymen and lower than or similar to that of farmers from other countries. Farmers were significantly more worried about financial/legal issues than about antimicrobial resistance. Further, farmers who worried about antimicrobial resistance and estimated their antimicrobial usage as lower than their fellow countrymen, perceived more impact from policy measures on antimicrobial reduction. Results indicated that the same policy measures can be applied to reduce antimicrobial usage in pig farming in all five countries. Moreover, increasing pig farmers’ awareness of the threat of antimicrobial resistance and its relation to antimicrobial usage is worth investing into; not only because pig farmers were not worried about antimicrobial usage but also because it affected farmers’ perception of policy measures to reduce antimicrobial usage.

Where to find the original material: https://www.ncbi.nlm.nih.gov/pubmed/25684036; http://dx.doi.org/10.1016/j.prevetmed.2015.01.018
Country: SE; CH; BE; DE; FR

188 Contribution of sociology to the study of the decrease of antimicrobial use on farms (Research paper – Ducrot, 2018)

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188 Research paper – Ducrot – 2018 – Contribution of sociology to the study of the decrease of antimicrobial use on farms

In Significant Impact Groups: AMU reduction strategies \ Monitoring and surveillance; Antibiotic use
Species targeted: Pigs; Poultry; Dairy; Beef; Sheep; Other;
Age: Young; Adult;
Summary:
The implementation of the EcoAntibio plan aimed at reducing the risks of antibiotic resistance has led to a strong mobilization of the various partners in the cattle breeding and agricultural profession in the cattle industry. Actions have been carried out at different scales and research work conducted, particularly in the human and social sciences. In addition to possible technical actions, social, psychological and economic factors influence decisions to prescribe and administer antibiotics. This article provides an overview of the work that is investigating the role of these factors in the choice to reduce antibiotic use in livestock production, at the level of the farmer, in his relationship with the veterinarian and livestock advisors, and more broadly in its professional and economic environment.

Where to find the original material: https://productions-animales.org/article/view/2395; https://doi.org/10.20870/productions-animales.2018.31.4.2395
Country: FR: CA; US

187 Use of natural products as alternatives to antibiotic feed additives in ruminant production (Research paper – Jouany, 2007)

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187 Research paper – Jouany – 2007 – Use of _natural_ products as alternatives to antibiotic feed additives in ruminant production

In Significant Impact Groups: Specific alternatives \ Pre-/probiotics; Feed / gut health
Species targeted: Dairy; Beef; Sheep;
Age: Adult;
Summary:
The banning in 2006 of the use of antibiotics as animal growth promoters in the European Union has increased demand from producers for alternative feed additives that can be used to improve animal production. This review gives an overview of the most common non-antibiotic feed additives already being used or that could potentially be used in ruminant nutrition. Probiotics, dicarboxylic acids, enzymes and plant-derived products including saponins, tannins and essential oils are presented. The known modes of action and effects of these additives on feed digestion and more especially on rumen fermentations are described. Their utility and limitations in field conditions for modern ruminant production systems and their compliance with the current legislation are also discussed.

Where to find the original material: https://www.cambridge.org/core/journals/animal/article/use-of-natural-products-as-alternatives-to-antibiotic-feed-additives-in-ruminant-production/B553FEADEDDA5BF470E70710C7B45038; https://doi.org/10.1017/S1751731107000742
Country: France

185 Quantitative and qualitative antimicrobial usage patterns infarrow-to-finish pig herds in Belgium France Germany and Sweden (Research paper – Sjolund, 2016)

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185 Research paper – Sjolund – 2016 – Quantitative and qualitative antimicrobial usage patterns infarrow-to-finish pig herds in Belgium France Germany and Sweden

In Significant Impact Groups: AMU reduction strategies \ Monitoring and surveillance; Antibiotic use
Species targeted: Pigs;
Age: Young; Adult;
Summary:
The aim of this study was to compare antimicrobial usage for pigs by age category, antimicrobial class and administration route for farrow-to-finish herds in four EU countries. A cross-sectional study was conducted among 227 farrow-to-finish pig herds in Belgium, France, Germany and Sweden. The Swedish herds had the lowest and the German herds the highest overall use. Most treatments were applied to weaned piglets except in the Swedish herds (with more frequent treatment of suckling piglets). Antimicrobials were most often applied through feed or water except in the Swedish herds where parenteral treatments were most frequent. Aminopenicillins was the antimicrobial class most commonly used. Belgian herd use of third and fourth generation cephalosporins was higher compared to the other countries. In summary, there were large differences in antimicrobial use for pigs between countries, herds and age groups in farrow-to-finish herds of similar size.

Where to find the original material: https://www.ncbi.nlm.nih.gov/pubmed/27435645; http://dx.doi.org/10.1016/j.prevetmed.2016.06.003
Country: BE; SE; FR; DE; CH