Home About Browse Search
Svenska


Taro leaf and stylo forage as protein sources for pigs in Laos

biomass yield, ensiling and nutritive value

Kaensombath, Lampheuy (2012). Taro leaf and stylo forage as protein sources for pigs in Laos. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2012:95
ISBN 978-91-576-7742-6
[Doctoral thesis]

[img]
Preview
PDF
557kB

Abstract

Existing forage plants may have applications as alternative protein resources for pigs in smallholder farming systems. This thesis examined the effect of harvesting/defoliation
interval on the yield and chemical composition of taro leaves and stylo forage and analysed appropriate ensiling methods for these materials. The effect of replacing soybean crude protein (CP) with ensiled taro leaf and stylo forage CP on growth performance and carcass traits of LY (Landrace x Yorkshire) and ML (Moo Lath) pigs
was also examined.

Taro leaf and petiole dry matter (DM) yield increased with increased harvesting frequency in the two years studied, but there was no effect on tuber yield. The leaves
contained 160-260 g CP kg¹ DM. Stylo leaf DM yield was unaffected by harvesting
interval in the first year, while leaf DM yield was larger with the most frequent
harvesting in the second year. The leaves contained 170-235 g CP kg¹ DM, which was
much higher than in the stems or forage (leaves+stems).

Use of cassava root meal, sugar cane molasses and taro tuber meal as silage additives
affected pH and the DM, ash and NDF content of stylo forage and taro leaf silage, and
the NH₃-N content of stylo forage silage. Level of additive affected pH and DM, NH₃-N, CP, ash and NDF content in taro silage, but not NH₃-N, CP and NDF content in
stylo forage silage. Increasing duration of ensiling reduced pH and DM content in stylo
forage and taro leaf silage.

Dry matter intake (DMI) and CP intake (CPI) in growing LY and ML pigs were
unaffected by increasing replacement (25 and 50%) of soybean CP by taro leaf silage
CP in the diet, whilst for stylo forage silage DMI and CPI were highest when 25% of
soybean CP was replaced. Average daily weight gain and feed conversion ratio (FCR),
carcass weight, back fat thickness and dressing percentage were unaffected by
increasing replacement of soybean CP with taro leaf or stylo forage CP in the diet. LY
pigs had higher intake and better carcass traits than ML pigs.

The work confirmed that stylo forage and taro leaves can be used as protein sources
in smallholder pig production systems without negative effects on the performance of
growing LY and ML pigs.

Authors/Creators:Kaensombath, Lampheuy
Title:Taro leaf and stylo forage as protein sources for pigs in Laos
Subtitle:biomass yield, ensiling and nutritive value
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2012
Volume:2012:95
Number of Pages:46
Papers/manuscripts:
NumberReferences
I.Kaensombath, L. and Frankow-Lindberg, B.E. (2012). Effect of harvesting interval on biomass yield and chemical composition of taro (Colocasia esculenta (L.) Schott) for feeding pigs in Laos. Field Crops Research 128, 71-75
II.Kaensombath, L. and Frankow-Lindberg, B.E. (2012). Effect of defoliation on biomass yield and chemical composition of stylo ‘CIAT 184’ (Stylosanthes guianensis (Aubl.) Sw. var. guianensis). Grassland Science (In press)
III.Kaensombath, L. and Lindberg, J.E. (2012). Effect of additives on ensiling of taro leaves (Colocasia esculenta (L.) Schott) and stylo CIAT 184 (Stylosanthes guianensis (Aubl.) Sw. var. guianensis) forage as feed for pigs
IV.Kaensombath, L. and Lindberg, J.E. (2012). Effect of replacing soybean protein by taro leaf (Colocasia esculenta (L.) Schott) protein on growth performance of exotic (Landrace x Yorkshire) and native (Moo Lath) Lao pigs. Tropical Animal Health and Production (DOI: 10.1007/s11250-012-0172-7)
V.Kaensombath, L., Neil, M. and Lindberg, J.E. (2012). Effect of replacing soybean protein by stylo (Stylosanthes guianensis (Aubl.) Sw. var. guianensis) protein on growth performance of exotic (Landrace x Yorkshire) and native (Moo Lath) Lao pigs. Tropical Animal Health and Production (DOI 10.1007/s11250-012-0299-6)
Place of Publication:Uppsala
Publisher:Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7742-6
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F01 Crop husbandry
L Animal production > L02 Animal feeding
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:swine, animal feeding, feeds, colocasia esculenta, stylosanthes guianensis, silage, biomass, leaves, protein content, harvesting frequency, crop yield, breeds (animals), animal performance, growth, carcass composition, lao people's democratic republic
Keywords:Harvesting interval, taro leaf, stylo forage, yield, forage quality, taro leaves silage, stylo silage, growth performance, carcass traits
URN:NBN:urn:nbn:se:slu:epsilon-e-734
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-734
ID Code:9255
Department:(VH) > Dept. of Animal Nutrition and Management
External funders:Swedish International Development Cooperation Agency
Deposited By: Ms Lampheuy Kaensombath
Deposited On:22 Nov 2012 07:58
Metadata Last Modified:02 Dec 2014 10:53

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits