References of "Nicks, Baudouin"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailReview on greenhouse gas emissions from pig houses: Production of carbon dioxide, methane and nitrous oxide by animals and manure
Philippe, François-Xavier ULg; Nicks, Baudouin ULg

in Agriculture, Ecosystems & Environment (2015)

The environmental impacts of livestock production are attracting increasing attention, especially the emission of greenhouse gases (GHGs). Currently, pork is the most widely consumed meat product in the ... [more ▼]

The environmental impacts of livestock production are attracting increasing attention, especially the emission of greenhouse gases (GHGs). Currently, pork is the most widely consumed meat product in the world, and its production is expected to grow in the next few decades. This paper deals with the production of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) by animals and by manure from pig buildings, with a focus on the influence of rearing techniques and nutrition. GHG emissions in piggeries originate from animals through CO2 exhalation and CH4 enteric fermentation, and from manure through the release of CO2, CH4 and N2O. The level of the CO2 exhalation (E-CO2, pig) depends on the physiological stage, the body weight (BW), the production level and the feed intake of the animals concerned. Enteric CH4 (E-CH4, pig) is principally related to dietary fibre intake and the fermentative capacity of the pig’s hindgut. Based on a review of the literature, the following equations are proposed in order to estimate E-CO2, pig (in kg day_1) and E-CH4,pig (in g day_1) for fattening pigs: E-CO2, pig = 0.136 _ BW0.573; E-CH4,pig = 0.012 _ dRes; with BW (in kg) and dRes for digestible residues (in g day_1). Numerous pathways are responsible for GHG production in manure. In addition, the microbial, physical and chemical properties of manure interact and modulate the level of emissions. Influencing factors for removal systems for both liquid and solid fractions of manure have been investigated. A large range of parameters showing an impact on the level of GHG production from pig houses has been reported. However, few of these can be considered unquestionably as GHG mitigation techniques because some strategies have shown contradictory effects depending on the gas, the circumstances and the study. Nevertheless, frequent manure removal seems to be an efficient means to reduce concurrently CO2-, CH4- and N2O-emissions from pig buildings for both slatted and bedded floor systems. Manure removal operations may be associated with specific storage conditions and efficient treatment in order to further reduce emissions. Several feeding strategies have been tested to decrease GHG emissions but they seem to be ineffective in reducing emissions both significantly and durably. In general, good management practices that enhance zootechnical performance will have beneficial consequences on GHG emission intensity. Taking into account the results described in the literature regarding CO2-, CH4- and N2O-production from animals and manure in pig houses, we estimate total GHG emissions to 448.3 kg CO2equiv. per slaughter pig produced or 4.87 kg CO2equiv. per kg carcass. The fattening period accounts for more than 70% of total emissions, while the gestation, lactation and weaning periods each contribute to about 10% of total emissions. Emissions of CO2, CH4 and N2O contribute to 81, 17 and 2% of total emissions from pig buildings, representing 3.87, 0.83 and 0.11 kg CO2equiv. per kg carcass, respectively. [less ▲]

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailAnimal health and welfare: equivalent or complementary?
Nicks, Baudouin ULg; Vandenheede, Marc ULg

in Revue scientifique et technique - Office international des épizooties (2014), 33(1), 91-96

Reflexion about the concepts of "health" and "welfare", applied to domestic animals in comparison with humans.

Detailed reference viewed: 84 (50 ULg)
Full Text
Peer Reviewed
See detailContinuous odour measurement from fattening pig units
Romain, Anne-Claude ULg; Nicolas, Jacques ULg; Cobut, Pierre et al

in Atmospheric Environment (2013), 77

A study in experimental slatted-system fattening pig units was conducted with the aim of estimating the odour emission factor (in ou/s.pig), which can subsequently be used in dispersion models to assess ... [more ▼]

A study in experimental slatted-system fattening pig units was conducted with the aim of estimating the odour emission factor (in ou/s.pig), which can subsequently be used in dispersion models to assess the odour annoyance zone. Dynamic olfactometry measurements carried out at different development stages of pigs showed a logical trend of the mean predicted odour emission factor with the pig weight. However, the variation within the same weight class was much larger than variation between classes. Possible causes of such variation were identified as the evolution of ventilation rate during the day and the circadian rhythm of pig. To be able to monitor continuously the daily variation of the odour, an electronic nose was used with suitable regression model calibrated against olfactometric measurements. After appropriate validation check, the electronic nose proved to be convenient, as a complementary tool to dynamic olfactometry, to record the daily variation of the odour emission factor in the pig barn. It was demonstrated that, in the controlled conditions of the experimental pens, the daily variation of the odour emission rate could be mainly attributed to the sole influence of the circadian rhythm of pig. As a consequence, determining a representative odour emission factor in a real case cannot be based on a snapshot odour sampling. [less ▲]

Detailed reference viewed: 42 (20 ULg)
Full Text
Peer Reviewed
See detailInfluence of permanent use of feeding stalls as living area on ammonia and greenhouse gas emissions for group-housed gestating sows kept on straw deep-litter
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Livestock Science (2013), 155

In pig production, the interest for litter systems in relation with animal welfare and the ban by 2013 in the EU of individual accommodations for gestating sows could promote the group-housing of ... [more ▼]

In pig production, the interest for litter systems in relation with animal welfare and the ban by 2013 in the EU of individual accommodations for gestating sows could promote the group-housing of gestating sows on deep-litter. However, compared to slatted-floor systems, few data are available on the gaseous emissions associated with the different modalities of rearing sows on deep-litter. In this study, two modalities were compared: group housing on a 3 m2/sow deep-litter or on a 1.8 m2/sow deep-litter plus 1.2 m2/sow concrete floor. In both cases, sows were fed in individual feeding stalls (1.2 m2/stall) but the access was limited at feeding time in the first case and permanent in the second one. Three successive batches of 10 gestating sows were used. Each batch was divided into 2 homogeneous groups randomly allocated to one of two treatments: fully (3 m2/sow) or partly (1.8 m2/sow) straw-based deep-bedded floor. The groups were kept separately in two identical rooms with same volume and same surface, equipped with five individual feeding stalls in contact with a pen of either 9 or 15 m2 deep-litter. The feeding stalls were equipped with front feeding troughs and rear gates allowing or not permanent access to the stalls outside of feeding times. Between each batch, the pens were cleaned. In both rooms, ventilation was automatically adapted to maintain a constant ambient temperature. The gas emissions (nitrous oxide, methane, carbon dioxide, ammonia and water vapour) were measured 3 times (weeks 2, 5 and 8 of stay) during 6 consecutive days by infrared photoacoustic detection. Sow performance was not significantly affected by floor type. With sows kept on partly bedded floor, gaseous emissions were significantly greater for methane (12.76 vs. 9.90 g/d.sow; P<0.001), carbon dioxide (3.12 vs. 2.90 kg/d.sow; P<0.01) and water vapour (4.70 vs. 4.03 kg/d.sow; P<0.001), and significantly lower for nitrous oxide (3.14 vs. 6.12 g/d.sow; P<0.001) and CO2 equivalents (1.24 vs. 2.10 kg/d.sow; P<0.001) compared to sows housed on fully bedded floor. There was no significant difference for ammonia emissions (8.36 vs. 7.45 g/d.sow; P>0.05). From the present trial in experimental rooms, it can be concluded that keeping group-housed gestating sows on partly straw bedded floor with permanent access to the concrete feeding stalls compared to fully straw bedded floor did not significantly influence animal performance and NH3-emissions, and decreased CO2eq-emissions (-40%). This decrease was observed owing to an important decrease of N2O-emissions (-49%). [less ▲]

Detailed reference viewed: 25 (8 ULg)
Full Text
See detailEmissions of ammonia, nitrous oxide and methane from pig houses: Influencing factors and mitigation techniques
Philippe, François-Xavier ULg; Nicks, Baudouin ULg

in Reconciling livestock management to the environment - Applying Best Available Technique (BAT): From the lab to the farm (2013)

Detailed reference viewed: 44 (6 ULg)
Full Text
See detailGaseous emissions from fattening pigs offered an ad libitum high-fibre diet and kept on fully slatted floor: preliminary results
Philippe, François-Xavier ULg; Laitat, Martine ULg; wavreille, José et al

in Proceedings of the 2nd Scientific Meeting of the Faculty of Veterinary Medicine (Liège – Belgium) (2012)

According to the literature, the diet composition of livestock can influence polluting gas emissions from agriculture. The aim of this preliminary study was to measure gaseous emissions from fattening ... [more ▼]

According to the literature, the diet composition of livestock can influence polluting gas emissions from agriculture. The aim of this preliminary study was to measure gaseous emissions from fattening pigs offered an ad libitum high-fibre diet (HFD) and kept on fully slatted floor. A batch of 24 fattening pigs was divided into two homogeneous groups randomly allocated to a treatment: conventional cereals-based diet or sugar beet pulpbased diet (HFD). With HFD, a significant decrease of animal performance was observed (837 vs. 962 g for the average daily gain). With pigs offered HFD, gaseous emissions per pig were significantly lower for NH3 (-30%, 6.64 vs. 9.47 g/d; P<0.05) and significantly greater for CH4 (+40%, 6.46 vs. 4.60 g/d; P<0.05). The emissions of N2O (0.34 g/d), CO2equivalent (0.27 kg/d), CO2 (1.68 kg/d) were not significantly influenced by the diet. Due to a more important microbial activity with HFD, the lower NH3-emissions could be attributed to the shift of a part of excreted nitrogen from urine (as urea) to faeces (as protein form), and to a lower slurry pH explained by the increase of volatile fatty acid content. The higher CH4-emissions could be explained by a greater production in the digestive tract and in the slurry due to fibre fermentations. In conclusion, HFD allowed decreasing NH3- and increasing CH4-emissions. However, in terms of climate change, this increase was offset by the decrease of indirect N2O-emissions due to NH3-emission decrease, as indicated by the similar CO2equivalent-emissions in the two groups. [less ▲]

Detailed reference viewed: 2 (2 ULg)
Peer Reviewed
See detailGaseous emissions from fattening pigs offered an ad libitum high-fibre diet and kept on fully slatted floor: preliminary results
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Proceedings of the International Symposium on Emissions of Gas and Dust from Livestock (2012)

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailAmmonia emissions associated to slatted floor and bedded floor systems for fattening pigs and gestating sows
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Proceedings of the International Symposium on Emissions of Gas and Dust from Livestock (2012)

Detailed reference viewed: 9 (2 ULg)
Full Text
See detailImpact of the floor type on emissions of ammonia and greenhouse gases from pig houses.
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Proceedings of the 2nd Scientific Meeting of the Faculty of Veterinary Medicine (Liège – Belgium) (2012)

Detailed reference viewed: 18 (1 ULg)
Full Text
Peer Reviewed
See detailEffets des fibres et du type de sol sur les émissions de gaz à effet de serre et d'ammoniac associées à l’élevage de truies
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in 44èmes Journées de la Recherche Porcine (2012)

A study was carried out to investigate the effect of dietary fibre content (23% of non-starch polysaccharides (NSP) with a standard diet based on cereals vs. 44% of NSP with a fibrous diet based on sugar ... [more ▼]

A study was carried out to investigate the effect of dietary fibre content (23% of non-starch polysaccharides (NSP) with a standard diet based on cereals vs. 44% of NSP with a fibrous diet based on sugar beet pulp) and the floor type (slatted floor vs. straw-based deep litter) on emissions of ammonia (NH3), nitrous oxide (N2O), methane (CH4) and CO2-equivalents (Eq-CO2). Six successive batches of 10 gestating sows were divided into 2 groups kept in 2 experimental rooms differing by the floor type. The standard diet was administered to the sows of the first 3 batches, the fibrous diet to the sows of the next 3 batches. Emissions were measured by infra-red photoacoustic detection. With the slatted floor, the fibrous diet decreased NH3 emission (12.0 vs. 15.5 g sow-1.d-1) but increased the Eq-CO2 emissions (0.69 vs. 0.57 kg sow-1.d-1) in relation to an increase of CH4 emissions (18.4 vs. 12.8 g sow-1.d-1), the N2O emissions not being impacted by the diet, with value around 0.62 g sow-1.d-1. With the straw-bedded floor, the fibrous diet increased the emissions of NH3 (12.3 vs. 9.2 g sow-1.d-1) and CH4 (14.6 vs. 9.6 g sow-1.d-1) but decreased N2O emissions (0.99 vs. 1.64 g/ sow-1.d-1) with the consequence that Eq-CO2 emissions were similar for the two diets, around 0.74 kg sow-1.d-1. [less ▲]

Detailed reference viewed: 55 (32 ULg)
Full Text
Peer Reviewed
See detailAnalgésie préemptive du porcelet avant la castration: comparaison de l'effet de l'acide tolfénamique et du méloxicam sur la douleur et le stress
Wavreille, José; Danard, Maylis ULg; Servais, Vincent et al

in 42èmes Journées de la Recherche Porcine (2012)

Detailed reference viewed: 68 (28 ULg)
Full Text
Peer Reviewed
See detailAmmonia and greenhouse gas emissions during the fattening of pigs kept on two types of straw floor
Philippe, François-Xavier ULg; Laitat, Martine ULg; Nicks, Baudouin ULg et al

in Agriculture, Ecosystems & Environment (2012), 150

Pig production is an important contributor to polluting gases emissions like ammonia (NH3) and greenhouse gases (GHG). Apart from environmental aspects, animal welfare is also an issue of growing ... [more ▼]

Pig production is an important contributor to polluting gases emissions like ammonia (NH3) and greenhouse gases (GHG). Apart from environmental aspects, animal welfare is also an issue of growing importance. The fattening of pigs on deep litter bedded system is consider as more animal friendly than the fattening on slatted floor, but it is also more expensive and requests more labour. The use of straw flow rather than straw deep litter could be a good compromise because of a reduced need for surface area, straw, labour and manure storage, combined with satisfying animal welfare. In order to evaluate the environmental impact of this rearing technique, a study was designed to quantify pollutant gas emissions of this system compared to the deep litter system for fattening pigs. Three successive batches of 32 Landrace fattening pigs were used. They were divided into 2 homogeneous groups of 16 animals randomly allocated to two treatments: straw deep litter or straw flow. The groups were kept simultaneously for a period of 4 months and separately in two identical rooms in volume (103 m3) and surface (30.2 m2) and fitted either with a deep litter pen (1.2 m2/pig) or with a straw flow system (0.75 m2/pig). Throughout the fattening period, 46.9 and 34.4 kg straw were used respectively per pig. In deep litter pen, the litter was removed after each batch. In the straw flow pen, the straw, mixed with dung, travelled down the slope by pig motion and went out of the pen to a scraped passage. The solid fraction was scraped every day, stored in a heap in the room and removed every month, 1 week before each period of gaseous emission measurement. The liquid fraction was automatically pumped from the scraped passage into a hermetic tank, which was emptied at the end of each fattening period. In both rooms, ventilation was automatically adapted to maintain a constant ambient temperature. Once a month, the emissions of ammonia (NH3), nitrous oxide (N2O), methane (CH4), carbon dioxide (CO2), and water vapour (H2O) were measured continuously for 6 consecutive days by infra-red photoacoustic detection. Animal performance (final body weight, body weight gain, and feed conversion ratio), some carcass quality parameters and manure characteristics were not significantly affected by floor type. With fattening pigs kept in a straw flow pen, gaseous emissions were significantly greater (P < 0.05) for NH3 (+10%) and significantly lower (P < 0.001) for N2O (−55%), CH4 (−46%), CO2 equivalents (−47%), CO2 (−10%) and H2O (−23%) compared to pigs housed on straw-based deep litter. Thus, the use of straw flow system for pig fattening allows reducing the GHG emissions but presents the disadvantage of increasing the NH3 emissions. [less ▲]

Detailed reference viewed: 72 (33 ULg)
Full Text
Peer Reviewed
See detailEvaluation morphométrique de chevaux de race barbe et dérivés en Algérie
Guedaoura, Sonya; Cabaraux, Jean-François ULg; Moumene, A. et al

in Annales de Médecine Vétérinaire (2011), 155

Le cheval barbe occupe une place de choix dans l’histoire, la culture et les traditions algériennes ; il est à la base des principales races équines maghrébines. Dix-neuf mensurations ont été réalisées ... [more ▼]

Le cheval barbe occupe une place de choix dans l’histoire, la culture et les traditions algériennes ; il est à la base des principales races équines maghrébines. Dix-neuf mensurations ont été réalisées sur 151 chevaux barbes et arabe-barbes, purs et présumés (origines incertaines), tous âgés de trois ans et plus. À partir de celles-ci, six indices corporels ont été calculés et le poids vif estimé. Les relevés de la robe et du profil céphalique ont également été effectués. [less ▲]

Detailed reference viewed: 95 (6 ULg)
Full Text
See detailEffects of dietary fibres on greenhouse gas and ammonia emissions associated to gestating sows
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Cabaraux, Jean-François; Delguste, Catherine; Frippiat, thibault (Eds.) et al Proceedings of the 1st Scientific Meeting of the Faculty of Veterinary Medicine (Liège – Belgium) (2011)

Usually, gestating sows are restrictedly-fed to prevent excessive body weight gain and fat deposition. However, feed restriction causes sustained feeding motivation resulting in stereotypic behaviour and ... [more ▼]

Usually, gestating sows are restrictedly-fed to prevent excessive body weight gain and fat deposition. However, feed restriction causes sustained feeding motivation resulting in stereotypic behaviour and impairment of animal welfare. High fibre diets (HFD) are known to reduce feeding motivation without impairments of performance but the effects of HFD on emissions of pollutant gases are very few studied. Thus, a study was carried out to compare the effect of two fibre contents (standard diet (STD) with 22% of non-starch polysaccharides (NSP) vs. HFD with 44% of NSP) on emissions of ammonia (E-NH3), nitrous oxide (E-N2O), methane (E-CH4) and CO2-equivalents (E-EqCO2) associated to gestating sows. Three successive batches of 10 gestating sows were divided into 2 homogeneous groups and randomly allocated to one of two treatments: STD vs. HFD. The groups were kept separately in two identical rooms equipped with a pen divided into a lying area with slatted floor and five individual feeding stalls with permanent access. Emissions were measured by infrared photoacoustic detection. The HFD significantly decreased ENH3 (12.1 vs. 15.9 g/sow.day) but increased E-EqCO2 (0.68 vs. 0.47 kg/sow.day) in relation with an increase of E-CH4 (18.4 vs. 9.1 g/sow.day), E-N2O being not impacted by the diet, with value around 0.60 g/sow.day. So, the effects of HFD offered to gestating sows on slatted floor on environment seem conflicting with a decrease of NH3 emissions which mainly contribute to acidification of soils and waters and eutrophication, but an increase of CO2-quivalents emissions which contribute to greenhouse effect and climate change. [less ▲]

Detailed reference viewed: 35 (7 ULg)
Full Text
Peer Reviewed
See detailAmmonia emissions from pig houses: Influencing factors and mitigation techniques
Philippe, François-Xavier ULg; Cabaraux, Jean-François ULg; Nicks, Baudouin ULg

in Agriculture, Ecosystems & Environment (2011), 141(3-4), 245-260

Pig houses are important sources of ammonia (NH3) emissions. For decades, investigations were carried out in determine the influencing factors and to point out opportunities of mitigation. In Europe ... [more ▼]

Pig houses are important sources of ammonia (NH3) emissions. For decades, investigations were carried out in determine the influencing factors and to point out opportunities of mitigation. In Europe, current NH3 emissions associated to pig production are about 24% lower than in 1990. However, further reduction seems necessary to avoid noxious effects on ecosystems. The main factors influencing NH3 production are the floor type, the manure removal system, the climatic conditions inside the building, the diet composition and the feed efficiency of animals. In pig production, the main floor types are the slatted floor and the bedded floor systems. In both systems, numerous variants and adaptations can be found with consequently a range of emission levels for each housing condition. Therefore, decision in favour of a floor type as regards NH3 emissions is difficult, especially as effective reducing strategies are available for both systems. For litter-based systems, the nature and the amount of substrate greatly influence the NH3 production with usually lower emission in case of generous bedding. For slatted floor systems, most of the studies resulted in lower emissions with partly slatted floor on condition that the solid part of the floor remains clean. Indeed, hot conditions, high animal density or inadequate pen design can increase the soiling of the solid floor and lead to increased NH3 emissions. In any case, emissions are lower if concrete slats are replaced by smooth materials like iron cast, metal or plastic slats. Several slurry pit designs and manure removal strategies were developed to mitigate emissions. The reduction of the slurry pit surface thanks to sloped pit walls are related to proportional reductions of NH3 emissions. Frequent manure removal, flushing and separating urine from faeces by V-shaped scraper or conveyor belts reduce the NH3 releases from the buildings by about 50%. However, the emissions during the storage period outside the building have to be taken into account for a whole assessment of the technique. Climate conditions inside the building also influence the emissions which are positively correlated with ambient temperature and ventilation rate. Consequently, ammonia emissions present seasonal and nychtemeral patterns. But, reducing the NH3 production by modulation of the climate conditions is rather unpractical because the ambient parameters must primarily respect the bioclimatic requirements for animal comfort. A closer match between dietary intakes and requirement of the pigs according to the physiological and growth stage results in lower NH3 emissions. In this way, diets with reduced crude protein content are highly effective in reducing the emissions with almost a 10% reduction for every 10 g kg−1 reduction in dietary crude protein. Other dietary strategies are also effective in lowering emissions. Dietary fibre inclusion reduces NH3 emissions by about 40% by shifting the nitrogen from urine to faeces due to promotion of bacterial growth in the large intestine. Lowering the dietary electrolyte balance or supplementation with acidifying salts like benzoic acid or CaSO4 are related to significant reductions. Other feed additives like Yucca extract, zeolites, probiotics, humic substance or lactose were also validated by several experiments. Moreover, better feed efficiency obtained by genetic selection or modification of the hormonal status of the pigs is also related to reduced emissions. In conclusion, effective reduction of ammonia emissions from pig buildings can be reached operating both on housing conditions and feeding strategies. The former are very efficient but the assessment has to include the specificity of each system and involve the complete process. In some cases, investment and cost operating can hamper their development. Feeding strategies offer the advantage of being easy to implement and rapid to adapt function of particular circumstances. [less ▲]

Detailed reference viewed: 190 (18 ULg)
Full Text
Peer Reviewed
See detailAmmonia and greenhouse gas emission from group-housed gestating sows depends on floor type
Philippe, François-Xavier ULg; Laitat, Martine ULg; Wavreille, José et al

in Agriculture, Ecosystems & Environment (2011), 140

The ban by 2013 in the EU of individual accommodations for gestating sows and the renewed interest for litter systems could promote in the future the group-housing of gestating sows on litter. But what ... [more ▼]

The ban by 2013 in the EU of individual accommodations for gestating sows and the renewed interest for litter systems could promote in the future the group-housing of gestating sows on litter. But what are the environmental impacts of this rearing technique? To answer this question, a study was scheduled to quantify pollutant gas emissions (nitrous oxide -N2O-, methane -CH4-, carbon dioxide -CO2- and ammonia -NH3-) according to floor type in the raising of group-housed gestating sows. The trial was carried out in experimental rooms located at Liège University (Belgium). Three successive batches of 10 gestating sows were used for this trial. Each batch was divided into 2 homogeneous groups randomly allocated to one of two treatments: concrete slatted floor or straw-based deep litter. The groups were kept separately in two identical rooms equipped with a pen divided into a lying area (slatted floor or deep litter) and five individual feeding stalls. The feeding stalls were equipped with front feeding troughs and rear gates preventing access to the stalls outside of the feeding time. Between each batch of sows, the pens were cleaned. In both rooms, ventilation was automatically adapted to maintain a constant ambient temperature. The gas emissions were measured 3 times (weeks 2, 5 and 8 of stay) during 6 consecutive days by infra red photoacoustic detection. Sow performance (body weight gain, backfat thickness, number and weight of piglets) was not significantly affected by floor type. With sows kept on slatted floor, gaseous emissions were significantly greater for NH3 (12.77 vs. 9.05 g d-1 sow-1; P<0.001) and CH4 (10.12 vs. 9.20 g d-1 sow-1; P<0.01), and significantly lower for N2O (0.47 vs. 2.27 g d-1 sow-1; P<0.001), CO2 equivalents (0.44 vs. 0.94 kg d-1 sow-1; P<0.001) and CO2 (2.41 vs. 2.83 kg d-1 sow-1; P<0.001) compared to sows housed on straw-based deep litter. There was no significant difference for water vapour emissions (3.25 vs. 3.21 kg d-1 sow-1; P>0.05). In conclusion, the main environmental disadvantage of the deep litter system pointed to in this study was the greater N2O-emissions and thus greater CO2eq-emissions compared to slatted floor. However, the use of deep litter was related to reduced NH3- and CH4-emissions. [less ▲]

Detailed reference viewed: 53 (29 ULg)
Full Text
Peer Reviewed
See detailEffets de la surface disponible et du type de sol sur les émissions gazeuses lors de l’élevage de truies gestantes
Philippe, François-Xavier ULg; Cabaraux, Jean-François ULg; Canart, Bernard et al

in 42èmes Journées de la Recherche Porcine (2010)

Detailed reference viewed: 54 (16 ULg)
Peer Reviewed
See detailTruies gestantes alimentées au DAC, faut-il réserver un logement séparé aux nullipares?
Wavreille, José; Remience, Virginie; Planchon, V. et al

in 42e Journées de la Recherche Porcine (2010)

Detailed reference viewed: 35 (6 ULg)