Next Article in Journal
Reviewing the Review: A Pilot Study of the Ethical Review Process of Animal Research in Sweden
Next Article in Special Issue
Evaluation of TiO2 Based Photocatalytic Treatment of Odor and Gaseous Emissions from Swine Manure with UV-A and UV-C
Previous Article in Journal
Koi (Cyprinus rubrofuscus) Seek Out Tactile Interaction with Humans: General Patterns and Individual Differences
Article

Effects of a Partially Perforated Flooring System on Ammonia Emissions in Broiler Housing—Conflict of Objectives between Animal Welfare and Environment?

1
Institute of Agricultural Engineering, University of Bonn, 53115 Bonn, Germany
2
Corteva Agriscience, Riedenburger Straße 7, 81677 München, Germany
3
Institute of Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany
4
Institute of Animal Science, University of Bonn, 53115 Bonn, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Yang Zhao and Lilong Chai
Animals 2021, 11(3), 707; https://doi.org/10.3390/ani11030707
Received: 11 February 2021 / Revised: 26 February 2021 / Accepted: 1 March 2021 / Published: 5 March 2021
(This article belongs to the Special Issue Housing Environment and Farm Animals' Well-Being)
Previous studies have shown positive effects of a partially perforated flooring system on animal welfare in broiler housing. Towards the end of the fattening periods, the present study showed a higher ammonia emission rate (NH3 ER) for a partially perforated flooring system compared with a littered control barn. Nevertheless, the measured NH3 concentrations were below 20 ppm, except during a mechanical litter treatment in the winter fattening period. Furthermore, the system offers the possibility of applying practical solutions that were not feasible before. By using underfloor air extraction, manure belts, or acidification systems underneath the elevated perforated area, NH3 concentrations and the resulting NH3 ER could be reduced. Thus, with some optimization, the partially perforated flooring system could be used to contribute to an increase in animal welfare and environmental protection at the same time.
A partially (50%) perforated flooring system showed positive effects on health- and behavior-based welfare indicators without affecting production performance. Ammonia (NH3) is the most common air pollutant in poultry production, with effects on animal welfare and the environment. The objectives of animal welfare and environmental protection are often incompatible. Therefore, this study addresses the question of how a partially perforated flooring system affects NH3 emissions. According to German regulations, three fattening periods were carried out with 500 Ross 308 broilers per barn (final stocking density: 39 kg m−2). The experimental barn was equipped with an elevated perforated area in the supply section, accessible by perforated ramps. The remaining area in the experimental barn and the control barn were equipped with wood shavings (600 g m−2). Besides the different floor types, management was identical. Air temperature (Temp), relative air humidity (RH), NH3 concentration, and ventilation rate (VR) were measured continuously. Furthermore, dry matter (DM) content, pH, and litter quality were assessed. Towards the end of the fattening periods, the NH3 emission rate (ER) of the partially perforated flooring system was higher compared with that of the littered control barn (all p < 0.001). This effect is mainly caused by the higher NH3 concentrations, which are promoted by the lack of compaction underneath the elevated perforated area and the increase in pH value under aerobic conditions. Nevertheless, the partially perforated flooring system offers different approaches for NH3 reduction that were previously not feasible, potentially contributing equally to animal welfare and environmental protection. View Full-Text
Keywords: broiler production; alternative flooring; ammonia emissions; animal welfare; environmental impact broiler production; alternative flooring; ammonia emissions; animal welfare; environmental impact
Show Figures

Figure 1

MDPI and ACS Style

Adler, C.; Schmithausen, A.J.; Trimborn, M.; Heitmann, S.; Spindler, B.; Tiemann, I.; Kemper, N.; Büscher, W. Effects of a Partially Perforated Flooring System on Ammonia Emissions in Broiler Housing—Conflict of Objectives between Animal Welfare and Environment? Animals 2021, 11, 707. https://doi.org/10.3390/ani11030707

AMA Style

Adler C, Schmithausen AJ, Trimborn M, Heitmann S, Spindler B, Tiemann I, Kemper N, Büscher W. Effects of a Partially Perforated Flooring System on Ammonia Emissions in Broiler Housing—Conflict of Objectives between Animal Welfare and Environment? Animals. 2021; 11(3):707. https://doi.org/10.3390/ani11030707

Chicago/Turabian Style

Adler, Carolin, Alexander J. Schmithausen, Manfred Trimborn, Sophia Heitmann, Birgit Spindler, Inga Tiemann, Nicole Kemper, and Wolfgang Büscher. 2021. "Effects of a Partially Perforated Flooring System on Ammonia Emissions in Broiler Housing—Conflict of Objectives between Animal Welfare and Environment?" Animals 11, no. 3: 707. https://doi.org/10.3390/ani11030707

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop