266 – Chick vocalizations – Development of a recording and analysis method (Research paper – Michaud – 2019)

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266 Research paper – Michaud – 2019 – Chick vocalizations_ development of a recording and analysis method

In Significant Impact Groups: Housing and welfare \ Weaning age and management
Species targeted: Poultry;
Age: Young;
Summary:
This study aims to develop a method for recording and analysing chicks vocalisations emitted during the first 3 days of life (D0 to D3). First, a bibliographic review identified vocalizations categories emitted by chicks (comfort, distress, snuggle, fear or pleasure trills) and identified their sound characteristics. Then, two programs developed under Matlab, made it possible to automate the recording of sound sequences and to detect and identify comfort and distress vocalizations. The study defined optimal sound recording conditions allowing an optimal analysis of sound signals: a group of ten chicks, omni-directional microphones, 2-minute recording sequences. Between D0 and D3, chicks emit short sounds with a limited frequency range (2000 – 5000 Hz). The program developed allowed to characterize the several sound indicators of importance, and count the chicks’ comfort and distress vocalizations.

Where to find the original material: https://www.itavi.asso.fr/content/vocalisations-du-poussin-developpement-dune-methode-denregistrement-et-danalyse;
Country: FR

265 – Reduction of antibiotics use in foie gras production – Actual uses and risks factors associated (Research paper – Litt – 2017)

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265 Research paper – Litt – 2017 – Reduction of antibiotics use in foie gras production _ Actual uses and risks factors associated

In Significant Impact Groups: AMU reduction strategies \ Monitoring and surveillance; Antibiotic use; Biosecurity
Species targeted: Poultry;
Age: Not stated;
Summary:
A survey aiming to reduce antibiotics use in poultry farming for foie gras production was conducted in 70 breeding lots. This study revealed a lot of risky practices (at least one other poultry farm in the vicinity for 60% of cases, multi-ages on the same site for nearly ¾ of farms, multi-species in 1 case out of 10, low use of sanitary huts, …). With 31% of the batches receiving at least one treatment and Antibiotic Treatment Frequency Indexes lower than 0.3 (0-21 days and 0-12 weeks), antimicrobial use was low. No critical antibiotics have been used to treat the animals followed during the study. Factors associated with antibiotic treatments focus on hygiene and biosafety precautions, vaccination and water quality. Since biosafety is at the heart of current developments for this production, the future evolution of breeding systems should naturally have a favorable effect on the decline in antibiotics use.

Where to find the original material: https://www.itavi.asso.fr/content/reduire-lusage-des-antibiotiques-dans-la-filiere-palmipedes-gras;
Country: FR

264 – Obstacles and incentives for broiler farmers to set up preventive measures against the avian colibacillosis (Research paper – Gery-Choquet – 2019)

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264 Research paper – Gery-Choquet – 2019 – Obstacles and incentives for broiler farmers to set up preventive measures against the avian colibacillosis

In Significant Impact Groups: Pathogen management \ Managing sick animals; Targeted use of antibiotics; AMU reduction strategies
Species targeted: Poultry;
Age: Not stated;
Summary:
In a context of antibiotic restraint, colibacillosis prevention in chicken farms should be maximized. This disease is commonly treated with antibiotics. Understanding the psychological and social context in which farmers operate can have an impact management of avian. With that purpose, a first survey (qualitative study) was carried out involving 14 chicken conventional production farmers. Afterwards, 75 western France farmers of replied to quantitative questionnaire based on results from the previous survey. The survey revealed that 85% of farmers had insufficient knowledge about colibacillosis. The major incentives to prevent the avian colibacillosis were the desire to improve farm income and to reduce antibiotic use. Statistical analysis showed five farmers profiles. Advice should be adapted according to these profiles : «experimented little motivated farmers», «young and independent farmers», «farmers with others priorities», «motivated with small chicken house farmers» and «risk taker farmers».

Where to find the original material: https://www.itavi.asso.fr/content/freins-et-motivations-des-eleveurs-de-poulets-mettre-en-place-des-mesures-preventives-contre;
Country: FR

263 The frequency of use of antibiotics (IFTA) – one indicator of sustainability of lives (Research paper – Fortun-Lamothe 2010)

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263 Research paper – Fortun-Lamothe 2010 The frequency of use of antibiotics (IFTA)_ one indicator of sustainability of lives

In Significant Impact Groups: AMU reduction strategies \ Monitoring and surveillance; Antibiotic use
Species targeted: Other;
Age: Not stated;
Summary:
We defined an indicator of sustainability to evaluate the practices of antibiotic supplementation in rabbit breeding. The frequency of use of antibiotics was defined as ‘Index de Fréquence des Traitements par les Antibiotiques’ (which can be translated as Index of Frequence of Antibiotic Treatments) The IFTA corresponded to the number of treatments received per animal and day during a reference period. It was declined for the growing rabbits (IFTAc and referred to the life of the animal) and for the reproductive females (IFTAr, and referred to a cycle of reproduction). It varied between 0 and 3 and must be expressed with two decimals to be sensitive to one day of treatment with one antibiotic molecule. For 57 breeding units studied, IFTAc was of 0.86±0.34 and IFTAr of 1.44±0.74. The IFTA aims to be user-friendly, reaching a compromise between relevance, sensitivity and simplicity.

Where to find the original material: https://hal.inrae.fr/hal-02750406;
Country: FR

262 – Assessment of biofilm in pipes of breeders houses and effect of purge on biofilm mastering and water quality (Research paper – Dennery – 2017)

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262 Research paper – Dennery – 2017 – Assessment of biofilm in pipes of breeders houses and effect of purge on biofilm mastering and waterquality

In Significant Impact Groups: Water \ Water quality; Housing and welfare
Species targeted: Poultry;
Age: Not stated;
Summary:
Biofilm can alter water quality in pipes. Its development is favored by breeding practices and conditions. Biofilm management in drinking water pipes is a major issue to prevent disease and to reduce antibiotic consumption and resistance. The aim of this field study is to assess the effect of purging pipes during breeding on development of biofilms, water quality, amount of water used, and breeder’s health. In order to achieve this goal it was necessary to create a methodology to characterize biofilm. A scoring method was developed, each score being definite by a picture and objective definition. The chart created was used to characterize biofilm at each observation, and to estimate its evolution during the breeding. First results highlight the importance of cleaning the pipes before starting the flock breeding. Daily and highly frequency purges seem to delay biofilm development inside pipes when compared to never purged pipes.

Where to find the original material: https://www.cabdirect.org/cabdirect/abstract/20183183457;
Country: FR

261 – Measuring carbon dioxide concentrations in broiler buildings (Research paper – Creach – 2018)

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261 Research paper – Creach – 2018 – Measuring carbon dioxide concentrations in broiler buildings

In Significant Impact Groups: Housing and welfare \ Climate
Species targeted: Poultry;
Age: Not stated;
Summary:
The ministerial decree of 28 June 2010 establishing the standards for the protection of broilers, sets a limit of 3 000 ppm of carbon dioxide (CO2) not to be exceeded at animal’s height and over the entire duration of the lot. Since then, CO2 concentration sensors are developing in poultry buildings and this gas, combined with other parameters (relative humidity rate in particular) is a good indicator of the level of containment of the breeding room. Different CO2 concentration sensors of the same technology (non-dispersive infrared or IRND) have been tested in commercial barns. The results show that two of the five tested sensors are not suitable for continuous use in poultry buildings. In addition, the spatial variability of CO2 concentrations was evaluate in a first phase under experimental conditions and in a second phase in commercial broiler barns.

Where to find the original material: https://www.itavi.asso.fr/content/mesurage-des-concentrations-en-dioxyde-de-carbone-en-batiment-poulets-de-chair;
Country: FR

260 – Measuring carbon dioxide concentrations in broiler houses (Research paper – Creach – 2017)

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260 Research paper – Creach – 2017 – Measuring carbon dioxide concentrations in broiler houses

In Significant Impact Groups: Housing and welfare \ Climate
Species targeted: Poultry;
Age: Not stated;
Summary:
The EU sets a limit of 3000 ppm of carbon dioxide (CO2) concentration not to be exceeded for broilers, over the entire duration of the flock. Since then, CO2 concentration sensors are developing in French poultry buildings. The purpose of this article is to provide methodological advices for continuous measurement of CO2 concentrations in a broiler house, by looking at CO2 commercial sensors. Despite being the best compromise to measure CO2 concentration at animal’s level according to at the end of the flock at 80 cm +/- 20 cm of height, this can underestimate CO2 concentrations in case of high CO2 productions by animals and litter. These results suggest using more than one CO2 sensors for continuous measurements in poultry barns. According to the sensors’ tests, first level investment should be in high-performance sensor and in its maintenance than purchasing an additional sensor.

Where to find the original material: https://www.itavi.asso.fr/content/mesurage-des-concentrations-en-dioxyde-de-carbone-en-batiment-poulets-de-chair#:~:text=L’arr%C3%AAt%C3%A9%20minist%C3%A9riel%20du%2028,toute%20la%20dur%C3%A9e%20du%20lot.;
Country: FR

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

257 Richtlijn Veterinair handelen bij vleeskuikens rondom de opzet en in de eerste levensweek op het vleeskuikenbedrijf by Koninklijke Nederlandse Maatschappij voor Diergen (Tools & Checklists)

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257 ToolsChecklists – Richtlijn Veterinair handelen bij vleeskuikens rondom de opzet en in de eerste levensweek op het vleeskuikenbedrijf by Koninklijke Nederlandse Maatschappij voor Diergen

In Significant Impact Groups: Housing and welfare
Species targeted: Broilers; Poultry;
Age:
Summary:
This directive was produced for Dutch poultry veterinarians to provide guidance in veterinary practice concerning the start-up of and management in the first week of live of broiler chicks. Apart from the procedures to follow in prescribing antibiotic treatments the directive provides a vast amount of practical tips and norms for managing and monitoring the optimal start-up of broiler chicks. For example, regarding optimal climate, lighting scheme, water management, feed and supportive measures such as advice on pre- and probiotics, vitamins and minerals, organic acids and fytobiotics. So while this guide is directed to veterinarians and offers a lot of veterinary medicinal information regarding the risk for illness and pathogens and its treatment in the early life of broilers, it can also be an interesting information source for broilers farmers keen on finding insights to improve their start-up management.

Where to find the original material: http://www.journees3r.fr/IMG/pdf/texte_7_reduction_intrants_b-mounaix-2.pdf;
Country: Netherlands

253 in case of heat feed more often and clean boxes by Gezondheidsdienst voor Dieren (GD) (Industry Innovation)

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253 Industry Innovation – in case of heat feed more often and clean boxes by Gezondheidsdienst voor Dieren (GD)

In Significant Impact Groups: Feed / gut health \ Feeding management; Housing and welfare
Species targeted: Dairy;
Age: Adult;
Summary:
A cow can suffer from heat stress from 21 degrees. To prevent this, dairy farmers should not feed at the hottest time of the day, according to the Gezondheidsdienst voor Dieren (NL). To keep the feed tasty and fresh, it is advisable to provide fresh feed several times a day (at least twice) and to (mechanically) ventilate the barn well over the feed alley. In order to prevent rumen acidification, which occurs more often in heat, a buffer can be added in consultation with the feed supplier in order to maintain the acidity level in the rumen. Bring the cows inside at the hottest time of the day and make sure there is unlimited water available. Clean cubicles are also necessary in case of heat. Bacteria in cubicles thrive in the heat and grow exponentially. There is then an increased risk of Kiebsiella mastitis. Therefore clean the cubicles extra often.

Where to find the original material: https://www.nieuweoogst.nl/nieuws/2020/05/19/bij-hitte-vaker-voeren-en-boxen-schoonmaken;
Country: NL