Doctoral thesis (Dissertations and theses)
Assessing tropical forage species used as pig feed ingredients in the western provinces of the Democratic Republic of the Congo
Kambashi Mutiaka, Bienvenu
2014
 

Files


Full Text
Bienvenu Kambashi_these_2014.pdf
Author postprint (1.54 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Forage; Pigs; Tropics; Nutritive value; Growth performance
Abstract :
[en] The use of forage species to feed pig goes back to immemorial times. If forage is no longer used in industrial farms with genetically-improved breeds, its accounts for an important part of pig diets in smallholder pig production systems in tropical areas including the Western provinces of the Democratic Republic of the Congo (DRC). The aim of this research thesis was to assess the relevancy of the use of local forage resources as a strategy to reduce reliance of pig production systems on concentrate feed ingredients in tropical environment, by identifying plant species available to smallholders with interesting nutritional value that could partly replace concentrates in the diets. First, smallholder pig production systems in two western provinces of the DRC were characterized and the most used forage species in pigs identified. Their nutritional value was determined using an in vitro model of the pig’s gastro-intestinal tract. It was concluded that Manihot esculenta, Ipomoea batatas, Moringa oleifera, and legume species exhibit an interesting profile for feeding pigs while grasses, Eichhornia crassipes, Acacia mangium and Cajanus cajan should be discouraged. Feeding values of Psophocarpus scandens, Vigna unguiculata, Stylosanthes guianensis, and Pueraria. phaseoloides were measured by assessing the voluntary feed intake of forage hays-based diets and their digestibility. Finally, the economic impact of feeding Psophocarpus scandens, Vigna unguiculata, and Stylosanthes guianensis, was measured through growth performance, carcass quality, and production costs determination. It is concluded that although forage species reduce the nutritive value and the growth of animals, the investigated legumes do not impact negatively the economical balance of concentrate-fed pigs when forage accounts for approx. 10 % of the diet. The ability of some forage species to improve performances of animals fed ill-balanced diets as usually practiced by smallholder farmers in the DRC should be investigated as it is suspected that under less favourable conditions, conclusions on the usefulness of forage legumes in pigs might be more positive
Disciplines :
Animal production & animal husbandry
Author, co-author :
Kambashi Mutiaka, Bienvenu ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Language :
English
Title :
Assessing tropical forage species used as pig feed ingredients in the western provinces of the Democratic Republic of the Congo
Alternative titles :
[fr] Évaluation d’espèces fourragères tropicales utilisées comme ingrédients dans l’alimentation du porc dans les provinces de l'Ouest de la République démocratique du Congo
Defense date :
20 June 2014
Number of pages :
xviii,154
Institution :
ULiège - Université de Liège
Degree :
PhD
Promotor :
Bindelle, Jérôme  ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Kiatoko Mangeye, Honoré
Boudry, Christelle ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
President :
Francis, Frédéric  ;  Université de Liège - ULiège > GxABT : Services généraux du site > Site GxABT - Relations internationales
Secretary :
Everaert, Nadia ;  Université de Liège - ULiège > Département GxABT
Jury member :
Portetelle, Daniel ;  Université de Liège - ULiège > Département GxABT > Microbial, food and biobased technologies
Mergeai, Guy ;  Université de Liège - ULiège > Département GxABT > Plant Sciences
Thewis, André ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Beckers, Yves  ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Renaudeau, David
Available on ORBi :
since 22 May 2014

Statistics


Number of views
319 (54 by ULiège)
Number of downloads
1013 (43 by ULiège)

Bibliography


Similar publications



Contact ORBi