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首页> 外文期刊>Asian-Australasian Journal of Animal Sciences >Apparent Digestibility, Nitrogen Balance, Ruminal Microbial Nitrogen Production and Blood Metabolites in Thai Brahman Cattle Fed a Basal Diet of Rice Straw and Supplemented with Some Tropical Protein-rich Trees
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Apparent Digestibility, Nitrogen Balance, Ruminal Microbial Nitrogen Production and Blood Metabolites in Thai Brahman Cattle Fed a Basal Diet of Rice Straw and Supplemented with Some Tropical Protein-rich Trees

机译：饲喂稻草的基础饮食的泰国婆罗门牛的表观消化率，氮平衡，瘤胃微生物氮的产生和血液代谢物，并补充了一些富含热带蛋白质的树木

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摘要

The effects of four types of tropical protein-rich trees on nutrient digestibility, nitrogen (N) balance, urinary purine derivative (PD) excretion and blood metabolites in four Thai Brahman cattle (290 +/- 2.5 kg) were studied. The animals were fed twice daily, with each feeding consisting of I kg (fresh weight) rice straw and one of the four dietary supplements: i) 1.98 kg oven-dried rain tree pods (RTP) and 20 g premix (RTPP), ii) 980 g RTP and I kg sun-dried leucaena leaves and 20 g premix (LLRT), iii) 980 g RTP and I kg sun-dried cassia leaves and 20 g premix (CLRT) and iv) 980 g RTP and I kg sun-dried mulberry leaves and 20 g premix (MLRT). The apparent dry matter (DM) and organic matter (OM) digestibilities were higher (p<0.05) in cattle fed the CLRT supplement than in those fed the other supplements, whilst the apparent digestibility of neutral detergent fibre (NDF) was higher (p<0.05) in cattle fed the CLRT and MLRT supplements than in those fed the other supplements. The N-balance of cattle fed LLRT and CLRT supplements was higher (p<0.05) than in cattle fed RTPP and MLRT supplements, whilst the apparent digestibility of N was highest (p<0.05) in cattle fed RTPP supplement, compared to the other supplements. Allantoin and PD excretion in the urine, and the ratios of allantoin/DOMI and PD/DOMI were higher (p<0.05) in cattle fed RTPP and MLRT than for those fed LLRT and CLRT supplements. Plasma beta-hydroxy butyrate (beta-HBA) and insulin concentrations were higher (p<0.05) in cattle fed RTPP supplement than in those fed the other supplements. The study demonstrated the value of using local multipurpose trees (MPTs) to improve Brahman cattle feeding systems in the tropics.
机译：研究了四种热带富含蛋白质的树木对四头泰国婆罗门牛（290 +/- 2.5千克）的养分消化率，氮（N）平衡，尿嘌呤衍生物（PD）排泄和血液代谢产物的影响。每天给动物饲喂两次，每次饲喂包括1千克（鲜重）稻草和四种膳食补充剂之一：i）1.98千克烤箱干燥的雨树豆荚（RTP）和20克预混料（RTPP），ii ）980克RTP和1公斤晒干的银杏叶和20克预混料（LLRT），iii）980克RTP和1公斤晒干的决明子叶和20克预混料（CLRT）和iv）980克RTP和1公斤晒干的决明子干桑叶和20克预混料（MLRT）。饲喂CLRT补充剂的牛的表观干物质（DM）和有机物（OM）的消化率高于（p <0.05），而中性洗涤剂纤维（NDF）的表观消化率则更高（p <0.05）饲喂CLRT和MLRT补充剂的牛比饲喂其他补充剂的牛<0.05。饲喂LLRT和CLRT补充剂的牛的N平衡高于饲喂RTPP和MLRT补充剂的牛（p <0.05），而饲喂RTPP补充剂的牛的氮的表观消化率最高（p <0.05）。补品。饲喂RTPP和MLRT的牛尿中尿囊素和PD的排泄量以及尿囊素/ DOMI和PD / DOMI的比率均高于饲喂LLRT和CLRT补充剂的牲畜（p <0.05）。饲喂RTPP补充剂的牛的血浆β-羟基丁酸（beta-HBA）和胰岛素浓度较高（p <0.05），高于饲喂其他补充剂的牛。该研究证明了使用本地多用途树（MPT）改善热带地区婆罗门牛饲养系统的价值。

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