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Water hyacinth (Eichhornia crassipes)

biomass production, ensilability and feeding value to growing cattle

Tham, Ho Thanh (2012). Water hyacinth (Eichhornia crassipes). Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2012:90
ISBN 978-91-576-7737-2
[Doctoral thesis]

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Abstract

Water hyacinth has now spread to all tropical and subtropical countries and is regarded as one of the world's most invasive aquatic plants. Water hyacinth (WH) is also known to have significant ecological and socio-economic effects. A potential of WH as feed for ruminants was evaluated through four studies with respect to: a) biomass yield and nutritive value of WH grown in two different habitats (pond and river), harvested in three cuts at four cutting intervals; b) fermentation quality of WH with and without additives; c) feeding value to growing cattle of ensiled; or d) fresh WH at four different levels of inclusion in a rice straw based diet.

Compositional changes as an effect of cut were generally small in the pond or negligible in the river habitat. Cutting interval had some minor effects on WH composition. The most obvious changes across habitats were an increase in neutral detergent fibre (NDFom) content from approximately 510 to 550 g/kg dry matter (DM) and a decrease in crude protein (CP) from approximately 210 to 170 g/kg DM when cutting interval was increased from 4 to 7 weeks. Water hyacinth has a potential as livestock feed. Results showed high CP contents (176 to 195 g/kg DM) and high DM yields for the two habitats of approximately 400 kg/ha/week. Application of sugars in the form of molasses or rice bran as a water absorbent resulted in a rapid decrease of pH to approximately 4.0. This level was maintained until at least day 14 and then gradually increased to approximately 4.8 at day 56. Ammonia nitrogen and fermentation end-product concentrations were within acceptable limits. The best fermentation quality was achieved in the silages with added molasses, absorbent or
with a combination of the two and an inoculant. At the highest WH level, cattle consumed >50% ensiled WH which provided nearly three times as much metabolisable
energy as when none was fed. These results were mainly due to an increasing digestibility with increasing level of ensiled WH. Cattle fed fresh WH showed abnormal rumen distension and a gradual increase of rice straw intakes over time. A long adaptation period to fresh WH is recommended and an inclusion level of not more than 30% of diet dry matter.

Authors/Creators:Tham, Ho Thanh
Title:Water hyacinth (Eichhornia crassipes)
Subtitle:biomass production, ensilability and feeding value to growing cattle
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :28 November 2012
Volume:2012:90
Number of Pages:64
Papers/manuscripts:
NumberReferences
I.Tham, H.T., Man, N.V. and Udén, P. 2012. Biomass yield and nutritive value of water hyacinth (Eichhornia crassipes) grown in two habitats as affected by cut and cutting interval. Grassland Science (Accepted).
II.Tham, H.T., Man, N.V. and Pauly, T. 2012. Fermentation quality of ensiled water hyacinth (Eichhornia crassipes) as affected by additives. Asian- Australasian Journal of Animal Sciences (In press).
III.Tham, H.T. and Udén, P. 2012. Effect of fresh water hyacinth (Eichhornia crassipes) on intake and digestibility in cattle fed rice straw and molassesurea cake (Manuscript).
IV.Tham, H.T. and Udén, P. 2012. Effect of water hyacinth (Eichhornia crassipes) silage on intake and nutrient digestibility in cattle fed rice straw and cottonseed cake. Asian-Australasian Journal of Animal Sciences (Accepted).
Place of Publication:Uppsala
Publisher:Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7737-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F62 Plant physiology - Growth and development
L Animal production > L02 Animal feeding
Q Food science > Q54 Feed composition
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:eichhornia crassipes, aquatic plants, cattle, breeds (animals), animal feeding, biomass, crop yield, silage, fermentation, feeds, proximate composition, digestibility, quality, viet nam
Keywords:additive, biomass yield, cut, cutting interval, digestibility, Eichhornia crassipes, habitat, intake, silage, water hyacinth
URN:NBN:urn:nbn:se:slu:epsilon-e-751
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-751
ID Code:9277
Department:(VH) > Dept. of Animal Nutrition and Management
External funders:Swedish International Development Cooperation Agency
Deposited By: Mr Tham Ho Thanh
Deposited On:03 Dec 2012 10:53
Metadata Last Modified:02 Dec 2014 10:53

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