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Nutrient utilisation in growing Cambodian cattle

effect of different feed sources and feed conservation techniques

Sath, Keo (2012). Nutrient utilisation in growing Cambodian cattle. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2012:94
ISBN 978-91-576-7741-9
[Doctoral thesis]

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Natural forages are an important part of the diet of cattle in Cambodia, but their nutrient value, particularly in terms of macro-minerals, may be inadequate, leading to potential mineral deficiencies in grazing cattle.

This thesis compared the nutrient composition of six forage types (rice bran, rice straw, para grass, cassava foliage, leucaena leaves, water hyacinth leaves) from two regions in Cambodia against faecal and urinary excretion of macro minerals by cattle. The analyses showed that Ca and P levels varied markedly between the different forages and that several of the commonly used forages in Cambodia have a mineral composition that does not cover the requirements of cattle.

In an experimental study examining the effects of different levels of dietary supplementation with sun-dried cassava foliage (Manihot esculenta) total dry matter (DM) intake and nitrogen retention in cattle was found to increase with increasing intake of cassava foliage, but DM and fibre digestibility decreased. It was concluded that cassava foliage is a good Ca source which compensates for the low Ca content in rice straw and para grass, but P deficiency appears to be exaggerated in cattle with higher cassava intake.

Two experiments to find an appropriate way of using sugar palm syrup when preserving para grass showed that applying at least 2% (fresh matter basis) sugar palm syrup to para grass at ensiling improved the fermentation quality of the resulting silage compared with a rice straw with rumen supplement diet. Rumen pH was slightly lower and feed conversion more efficient in cattle consuming silage. Para grass silage was a good source of digestible nitrogen.

Authors/Creators:Sath, Keo
Title:Nutrient utilisation in growing Cambodian cattle
Subtitle:effect of different feed sources and feed conservation techniques
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :28 November 2012
Number of Pages:56
I.Sath, K., Pauly, T. and Holtenius, K. 2012. Mineral balance of Cambodian cattle based on their faecal and urinary excretion. (Accepted: Journal of Animal and Veterinary Advances)
II.Sath, K., Pauly, T. and Holtenius, K. 2012. Mineral status in cattle fed rice straw and para grass combined with different levels of protein derived from cassava foliage. (Accepted: Asian-Australian Journal of Animal Science)
III.Sath, K., Sokun, K., Pauly, T. and Holtenius, K. 2012. Feed intake, digestibility, and N retention in cattle fed rice straw and para grass combined with different levels of protein derived from cassava foliage. Asian-Australian Journal of Animal Science 25(7), 956-961.
IV.Sath, K., Khen, K., Holtenius, K. and Pauly, T. 2012. Ensiling of para grass (Brachiaria mutica) supplemented with sugar palm syrup at ensiling or feeding on silage quality, feed intake and growth performance of local Cambodian cattle. (manuscript)
Place of Publication:Uppsala
Publisher:Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7741-9
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L02 Animal feeding
Q Food science > Q52 Feed processing and preservation
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:cattle, animal feeding, animal nutrition, forage, feed conservation, feed resources, cambodia
Keywords:cassava foliage, para grass/silage, sugar palm syrup, macro-mineral, intake, digestibility, retention, fermentation quality
Permanent URL:
ID Code:9276
Department:(VH) > Dept. of Animal Nutrition and Management
External funders:Swedish International Development Cooperation Agency
Deposited By: Sath Keo
Deposited On:29 Nov 2012 15:58
Metadata Last Modified:02 Dec 2014 10:53

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