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Utilisation of fibre-rich feedstuffs for pigs in Vietnam

Ngoc, Tran Thi Bich (2012). Utilisation of fibre-rich feedstuffs for pigs in Vietnam. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2012:47
ISBN 978-91-576-7683-2
[Doctoral thesis]

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Abstract

This thesis examines the chemical composition and water holding capacity (WHC) of fibrous feeds and evaluates the effects of fibre level, fibre source, particle size and enzyme supplementation on the digestibility, performance, total tract mean retention time (MRT), as well as gut development, morphology, environment and microflora of pigs.

The content (g/kg dry matter, DM) of crude protein, ether extract, starch, total sugars and non-starch polysaccharides was found to vary between feedstuffs. The content of individual neutral sugars varied between feed ingredients, with the highest content of arabinose, galactose and glucose in tofu residue, the highest xylose content in brewer’s grain and the highest mannose content in coconut cake. The content of soluble non-cellulosic polysaccharides was positively correlated to the WHC.

Pigs (Landrace x Yorkshire, LY) fed a diet containing cassava residue had higher the total tract apparent digestibility (TTAD) of nutrients and average daily gain (ADG) and lower feed conversion ratio (FCR) than those fed a diet containing sweet potato vines. A reduction in particle size and multi-enzyme addition improved the TTAD of dietary components and growth performance in the post-weaning period, but not the in growing period. An increased fibre content in the diet decreased ADG, the nutrient digestibility and MRT, and increased FCR and gut weight. Moreover, there was a possible impact of fibre properties on nutrient digestibility and MRT, but not on gut size. Mong Cai (MC) pigs had a greater relative gut weight and content than LY pigs and a longer MRT, resulting in higher nutrient digestibility. Across diets within breeds the MRT was negatively related to DMI, while the TTAD of nutrients was positively related to MRT. Fibre level and fibre source affected small intestinal morphology, in particular in the ileum. This effect occurred in parallel with fibre-related effects on lactic acid bacteria (LAB) and E. coli counts in the gastrointestinal tract (GIT), and on the gut environment. There were differences between MC and LY pigs in small intestinal morphology, counts of LAB and E. coli along the GIT and gut environment.

In short, this thesis shows that fibrous feedstuffs from green plants and agro-industrial by-products can be used in pig diets as common feed ingredients, particularly in indigenous pig diets.

Authors/Creators:Ngoc, Tran Thi Bich
Title:Utilisation of fibre-rich feedstuffs for pigs in Vietnam
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :July 2012
Volume:2012:47
Number of Pages:54
Papers/manuscripts:
NumberReferences
I.Ngoc, T.T.B., Len, N.T. and Lindberg, J.E. 2012. Chemical characterization and water holding capacity of fibre-rich feedstuffs used for pigs in Vietnam. Asian-Australian Journal of Animal Science 25 (6), 861-868.
II.Ngoc, T.T.B., Len, N.T., Ogle, B. and Lindberg, J.E. 2011. Influence of particle size and multi-enzyme supplementation of fibrous diets on total tract digestibility and performance of weaning (8-20 kg) and growing (20-40 kg) pigs. Animal Feed Science and Technology 169, 86-95.
III.Ngoc, T.T.B., Len, N.T. and Lindberg, J.E. 2012. Impact of fibre intake and fibre source on digestibility, gastro-intestinal tract development, mean retention time and growth performance of indigenous (Mong Cai) and exotic (Landrace x Yorkshire) pigs. Animal (in revision).
IV.Ngoc, T.T.B., Hong, T.T.T., Len, N.T. and Lindberg, J.E. 2012. Effect of fibre level and fibre source on gut morphology and micro-environment in local (Mong Cai) and exotic (Landrace x Yorkshire) pigs. Asian-Australian Journal of Animal Science(accepted).
Place of Publication:Uppsala
Publisher:Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7683-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L02 Animal feeding
L Animal production > L51 Animal physiology - Nutrition
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:swine, breeds (animals), feeds, feed composition, dietary fibres, digestibility, enzymes, feed additives, digestive system, feed conversion efficiency, viet nam
Keywords:fibre-rich feedstuffs, pigs, Vietnam
URN:NBN:urn:nbn:se:slu:epsilon-e-592
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-592
ID Code:9005
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: Tran Thi Bich Ngoc
Deposited On:28 Aug 2012 13:43
Metadata Last Modified:02 Dec 2014 10:51

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