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Forage legumes as feed for pigs in smallholder production systems in the North of Lao PDR

production systems, forage biomass yield and protein nutrition

Phengsavanh, Phonepaseuth (2013). Forage legumes as feed for pigs in smallholder production systems in the North of Lao PDR. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2013:12
ISBN 978-91-576-7769-3
[Doctoral thesis]

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This thesis sought to characterise and understand existing smallholder pig production systems in the North of Lao PDR and to investigate the role of forage legumes as alternative protein sources for pigs in smallholder production systems.

A survey found that there were three main pig rearing systems, free-scavenging, semi-scavenging and confinement (enclosures and pens), in the study areas. These systems were managed differently depending on intensity of crop production, farmer ethnicity and reason for keeping pigs. Farmers fed their pigs mainly rice bran, distiller's waste, maize, cassava and green plant materials. The growth performance was poor, with an average daily gain (ADG) of around 100 g. The reproductive performance of sows was low, with an average litter size of 8.3 piglets and piglet mortality around 50%. Other constraints in smallholder systems were disease outbreaks.

An agronomy trial showed that the forage legumes Stylo composite and porcupine joint vetch produced high DM yields, had high contents of crude protein (CP) and had potential to be used as protein sources for pigs in smallholder systems. Harvesting every 45 days produced higher DM yields than other harvesting intervals. The CP content was highest with the shortest harvesting interval, while the opposite was true for the fibre content (CF, ADF and NDF).

Growth trials on the CP requirements of growing local Moo Lath pigs showed that final body weight (BW), ADG, feed intake and feed conversion ratio (FCR) did not improve above a dietary CP level of 181 g kg-1 DM for weaner pigs, 132 g kg-1 DM for grower pigs and 111 g kg-1 DM for finisher pigs. Additional growth trials with Moo Lath pigs showed that replacing soybean CP with forage leaf CP reduced DM and energy intake and ADG, but had no effect on FCR. Increasing the replacement of soybean CP with legume leaf CP had a negative linear effect on DM and energy intake, final BW and ADG, and on all carcass traits except lean meat percentage. Supplementing a traditional diet with soybean meal resulted in higher DM and energy intake, lower FCR and higher final BW and ADG.

Authors/Creators:Phengsavanh, Phonepaseuth
Title:Forage legumes as feed for pigs in smallholder production systems in the North of Lao PDR
Subtitle:production systems, forage biomass yield and protein nutrition
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :15 January 2013
Number of Pages:65
I.Phengsavanh, P., Ogle, B., Stür, W., Frankow-Lindberg, E.B. & Lindberg, J.E. 2011. Smallholder pig rearing systems in Northern Lao PDR. Asian-Australian Journal of Animal Science 24 (6): 867-874.
II.Phengsavanh, P., Ogle, B., Stür, W., Frankow-Lindberg, B.E. & Lindberg J.E. 2010. Feeding and performance of pigs in smallholder systems in Northern Lao PDR. Tropical Animal Health and Production 42, 1627-1733.
III.Phengsavanh, P., Frankow-Lindberg, B.E. & Lindberg J.E.2012. Effect of harvesting interval on yield and chemical composition of five tropical forage legumes.Grassland Science. (Accepted).
IV.Phengsavanh, P. & Lindberg, J.E. 2012. Effects of dietary protein levels on growth performance and feed intake in indigenous Moo Lath pigs in Lao PDR. (Submitted).
V.Phengsavanh, P. & Lindberg, J.E. 2012. Effect of replacing soybean protein with protein from porcupine joint vetch (Aeschynomene histrix BRA 9690) and stylo (Stylosanthes guianensis Composite) leaf meal on growth performance of indigenous pigs in Lao PDR. (Submitted).
Place of Publication:Uppsala
Publisher:Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7769-3
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L02 Animal feeding
L Animal production > L51 Animal physiology - Nutrition
Q Food science > Q54 Feed composition
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:swine, small scale farming, animal feeding, feed legumes, stylosanthes guianensis, aeschynomene, biomass, chemical composition, protein content, crop yield, animal performance, growth, breeds (animals), lao people's democratic republic
Keywords:smallholder pig production, rearing system, feeding system, dry matter yield, harvesting interval, Moo Lath pig, protein requirement, forage legume leaf meal, growth rate, feed intake
Permanent URL:
ID Code:9413
Department:(VH) > Dept. of Animal Nutrition and Management
External funders:Swedish International Development Cooperation Agency
Deposited By: Phonepaseuth Phengsavanh
Deposited On:06 Feb 2013 07:01
Metadata Last Modified:02 Dec 2014 10:54

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