Reference : Nutritional value and intake of aquatic ferns (Azolla filiculoides Lam. and Salvinia mol...
Scientific journals : Article
Life sciences : Agriculture & agronomy
Life sciences : Aquatic sciences & oceanology
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/34295
Nutritional value and intake of aquatic ferns (Azolla filiculoides Lam. and Salvinia molesta Mitchell.) in sows
English
Leterme, Pascal [Universidad Nacional de Colombia > Zootecnia > > >]
Londoño, Angela M. [Universidad Nacional de Colombia > Zootecnia > > >]
Ordoñez, Diana C. [Universidad Nacional de Colombia > Zootecnia > > >]
Rosales, Alejandra [Universidad Nacional de Colombia > Zootechnia > > >]
Estrada, Fernando [Universidad Nacional de Colombia > Zootecnia > > >]
Bindelle, Jérôme mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Buldgen, André [Université de Liège - ULG > Gembloux Agro-Bio Tech > Zootechnie > >]
2010
Animal Feed Science & Technology
Elsevier Science
155
1
55-64
Yes (verified by ORBi)
International
0377-8401
Amsterdam
The Netherlands
[en] Azolla filiculoides ; Salvinia molesta ; Aquatic fern ; Pig ; Nutritional value ; Digestibility
[en] Aquatic ferns (AFs) such as Azolla filiculoides and Salvinia molesta are grown on swine lagoons in the tropics and used in diets for pigs. The present work is aimed at evaluating their potential as feed ingredients for sows. When presented with ad libitum AFs, gilts weighing 110 ± 14 kg (mean ± SD), were able to ingest 9.1–9.7 kg fresh AF per day (from 597 to 630 g dry matter (DM) per day) and from 1240 to 1428 g DM per day when presented in a dry, ground form. A digestibility study was conducted, using sows weighing 213 ± 9 kg (mean ± SD), which were fed diets containing maize, soybean meal and 0, 150 or 300 g AF kg−1 diet. The presence of AFs had a negative impact on the faecal digestibility of the crude protein, NDF and energy content of the whole diet (P<0.001) and on the ileal protein digestibility, especially with 300 g AFs kg−1 diet. The level of AFs in the diet had no effect on stomach weight (P>0.05) but increased the weight of the rest of the gastrointestinal tract (P<0.001). The rate of AF fibre fermentation in the pig large intestine was measured using an in vitro gas test. The rates were much lower than tropical tree foliage, which can also be used in pig diets in the tropics. This could partly explain the low apparent digestibility of AFs in pigs. In conclusion, the inclusion level of AFs in rations for sows should be limited to 150 g AFs kg−1 diet due to the low digestibility and energy density, as well as the negative impact on the digestibility of the whole diet.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/34295
10.1016/j.anifeedsci.2009.10.002

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Leterme 2010 Nutritional value and intake of aquatic ferns in pigs.pdfPublisher postprint167.99 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.