Article (Scientific journals)
Nitrogen prediction model in smallholder farming system integrating pig and fish farming in the urban and rural areas of Kinshasa
Mafwila Kinkela, Patrick; Dochain, Denis; Kalala Bolokango, Gaetan et al.
2019In NSABS 2019
Peer reviewed
 

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Keywords :
modelling, pig, fish, nitrogen
Abstract :
[en] The modelling of nitrogen flow within integrated farms in aquaculture allows monitoring of the nitrogen evolution, which is one of the limiting elements in the farm production. This is one of the important ways to improve production in small integrated agricultural farms in rural and peri-urban areas of Kinshasa with limited financial resources. The model is built in order to use the nitrogen produced by the pig for fertilizing fish farming ponds. The pig module was calibrated, validated and ready to be used, contrary to the fish module which is not validated due to the lack of appropriate experience data. Result of pig module prediction, gives the cumulative N amount of the fattening period to 861.85 gN/pig for fecal nitrogen and 765.39 for urinary production very close to the measured value of 988.68 gN/pig and 887.55 gN/pig for N fecal and N urinary. The model shows that the variation in feed content leads to the variation in the N fecal and urinary production to the farm. Combined to the N from pig, N water in the fish pond is sensitive to N from pig addition and fish biomass. Change in factors that affect pig consumption and pig growing performance lead a variation in both N production by a pig and N water evolution in the pond water column.
Disciplines :
Agriculture & agronomy
Author, co-author :
Mafwila Kinkela, Patrick ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Dochain, Denis
Kalala Bolokango, Gaetan ;  Université de Liège - ULiège > Form. doct. sc. agro. & ingé. biol. (paysage)
Kambashi, Bienvenu
ROLLIN, Xavier
Bindelle, Jérôme  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Language :
English
Title :
Nitrogen prediction model in smallholder farming system integrating pig and fish farming in the urban and rural areas of Kinshasa
Publication date :
04 February 2019
Journal title :
NSABS 2019
Special issue title :
24th National Symposium for Applied Biological Sciences
Peer reviewed :
Peer reviewed
Funders :
ARES - Académie de Recherche et d'Enseignement Supérieur [BE]
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since 07 March 2019

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