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Effect of natural oil supplement to ration on methane emission and fattening in ruminant animal

日粮中添加天然油对反刍动物甲烷排放和育肥的影响

基本信息

批准号：
12660240
负责人：
TAKAHASHI Toshiyoshi
金额：
$ 2.24万
依托单位：
Yamagata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

l . Effect of safflower oil supplement on control of methane emission and nutritive value in sheep : Four sheep were fed the ration (roughage : concentrate=2:8) at 80% level of ad lib. feeding. Safflower oil was supplemented at the levels of 2.5, 5.0 and 7.5 % of ration. Decreasing rate of methane emission was high as the supplement of safflower oil increased. Nutritional value was improved by safflower oil supplement.2. 2.Control of methane emission from expiratory gas by rapeseed oil supplement in sheep fed different rations of roughage and concentrate : Four sheep were fed the ration (roughage : concentrate=2:8 and 8:2) at 2% level (dry matter basis) of body weight. Rapeseed oil was supplemented at 5.0 and 7.5 % of ration. Methane emission decreased 12% in high roughage and 15% in high concentrate with rapeseed oil supplement, respectively.3. Effect of natural oils supplement on methane emission and fattening in sheep : Methane decreased 3〜11%, by supplements of natural oils, in vitro. Six sheep were used for fattening trial. The ratio of roughage and concentrate was 2:8 and natural oil was supplemented 2.5% to the ration. Experimental animals were fed to fatten for 4 months. By supplement of oil, feed conversion ratio was tended to improve and unsaturated fatty acids increased i.e., oleic and linoleic acids in subcutaneous and linoleic acid in loin and rib muscles.4. Effect of natural oil and glycerol supplements on control of methane emission in sheep : Four sheep were fed the ration (roughage:concentrate=2:8). Natural oils with different unsaturated levels and glycerol were supplemented 5% of diets. Methane emission decreased remarkably by highly unsaturated oil. Nutritive value was improved by supplement of oils. Volatile fatty acid became propionic acid fermentation type of highly unsaturated oil 0x(3E)0x(3E)glycerol=lowly unsaturated oil 0x(3E)non supplement in order.

L .添加红花油对绵羊甲烷排放和营养价值的影响：4只绵羊按粗精比为2：8的日粮（80%自由采食）饲喂。喂食试验组日粮中添加2.5%、5.0%和7.5%的红花油.随着红花油添加量的增加，甲烷排放量的降低速率也随之增加。红花籽油澄清剂提高了红花籽油的营养价值. 2.日粮中添加菜籽油对绵羊呼出气甲烷排放的控制试验：4只绵羊分别饲喂粗精比为2：8和8：2的日粮，日粮中添加菜籽油的比例为体重的2%（干物质基础）。菜籽油的添加量分别为日粮的5.0%和7.5%。添加菜籽油后，高粗饲料和高精饲料的甲烷排放量分别降低了12%和15%.添加天然油脂对绵羊甲烷排放和育肥的影响：在体外试验中，添加天然油脂可使甲烷排放量降低3 ~ 11%。本试验选用6只绵羊进行育肥试验。粗精比为2：8，日粮中添加2.5%的天然油脂。实验动物饲养育肥4个月。补油后饲料转化率有提高的趋势，不饱和脂肪酸增加，皮下组织中的油酸和亚油酸以及腰部和肋骨肌肉中的亚油酸。天然油和甘油补充剂对控制绵羊甲烷排放的影响：4只绵羊饲喂日粮（粗饲料：精饲料=2：8）。日粮中添加5%的天然油脂和甘油。高度不饱和油显著降低了甲烷排放。添加油脂可提高其营养价值。挥发性脂肪酸依次为丙酸发酵型高不饱和油0x（3E）0x（3E）甘油=低不饱和油0x（3E）无补剂。