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Title Transcription
ネッタイイキ ニオケル ハンスウ カチク セイサン セイセキ コウジョウ ノ タメノ テイヒンシツ ソシリョウ ノ シリョウ カチ カイゼン
Title Alternative (English)
Improvement of Feeding Value of Low Quality Roughages to Enhance Ruminants Production in Tropical Regions
File
language
jpn
Author
Fujihara, Tsutomu
Warly, Lili
Orden, Edgar A.
Abdulrazak, Shaukat A.
Description
Four selected studies carried out to evaluate the utilization of rice straw based diet and poor quality forages with energy and protein supplements which are applicable to farmers in developing countries at farm level are presented. 1) Wethers fed on rice straw ad libitum supplemented with soybean meal (SBM) at the rate of 75 and 150 g/d to supply 50 to 100% of maintenance level of the metabolizable protein. Supplementation of SBM resulted in higher feed intake and digestibility through the effect on rumen fermentation status, although there was no further effect on nitrogen (N) retention at increased level of SBM supplement. It was considered that high fermentable energy is required to support optimum activity of the rumen microbes at the high protein supplementation. 2) The effects of protein and energy supplementation with straw diet on N retention and rumen microbial yield (MBY) were studied using wethers. The three rations, 100% ammoniated rice straw (ARS), 65% untreated rice straw (URS) + 30% rice bran (RB) + 5% SBM, and 85% ARS + 15% RB, were formulated to contain almost the same amount of protein and energy. RB + ARS improved N retention and MBY, but RB + SBM supplementation with URS showed similar response on N utilization and efficiency of MBY compared to ARS based diet. 3) Voluntary intake, digestibility and live weight gain were evaluated in yearling goats fed on Rhodes grass hay ad libitum, and supplemented dried Gliricidia leaf meal (GLM), GLM and maize bran (1:1), and maize bran at the rate of 120g/d. Feed intakes and the digestibility of organic matter (OM) and N were greater for supplemented groups than for control. The live weight gains were the highest in goats supplemented with mixture of GLM + maize bran. The result indicated that GLM could be used as a source of supplement for growing ruminants fed on low quality hay. 4) To evaluate the effect of supplementing legume tree leaf on intake, digestibility, live weight gain and MBY, two experiments were conducted using 20 crossbred steers offered fresh napier grass ad libitum. Gliricidia supplementation slightly decreased napier grass intake, although Leucaena increased the total feed intake without depressing napier grass intake. There were no clear effects of supplementing Gliricidia and Leucaena on OM digestibility, MBY and its efficiency. Live weight gain was obviously greater in Leucaena supplemented group than in Gliricidia group.
Journal Title
島根大学生物資源科学部研究報告
Volume
8
Start Page
29
End Page
38
ISSN
13433644
Published Date
2003-12-20
NCID
AA1112906X
Publisher
島根大学生物資源科学部
Publisher Aalternative
Shimane University, Faculty of Life and Environmental Science
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
1-12+ / 1996-2007
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