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首页> 外文期刊>Tropical Animal Health and Production >Influence of different supplements and sugarcane (Saccharum officinarum L.) cultivars on intake, digestible variables and methane production of dairy heifers under tropical conditions
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Influence of different supplements and sugarcane (Saccharum officinarum L.) cultivars on intake, digestible variables and methane production of dairy heifers under tropical conditions

机译：热带条件下不同补品和甘蔗（Saccharum officinarum L.）品种对奶牛小母牛摄入，可消化变量和甲烷产生的影响

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摘要

The sulphur hexafluoride (SF6) gas tracer method was used to measure methane (CH4) production of crossbred (3/4 Holstein x Zebu) dairy heifers fed two types of sugarcane (Saccharum officinarum L.; cultivar IAC-862480 (CC1) or cultivar IAC-873184 (CC2)) and supplemented with urea or concentrate. The study was performed at Embrapa Southeast Cattle, So Carlos, SP, Brazil, using a completely randomised design. Differences between treatments were significant for digestibility of dry matter, organic matter and energy. When animals were supplemented with urea differences between sugarcane cultivars did occur for NDF consumption, but not for daily methane production. This suggest that variation in chemical composition of sugarcane did not affect bovine ruminal CH4 emissions. Concentrate inclusion in animal diet increased digestible organic matter intake, improving the nutrient intake by animals, but did not reduce CH4 production expressed as a percentage of gross energy intake.
机译：六氟化硫（SF6）气体示踪法用于测量饲喂两种甘蔗（Saccharum officinarum L .;品种IAC-862480（CC1）或品种）的杂交（3/4 Holstein x Zebu）奶牛的甲烷（CH4）的产生IAC-873184（CC2）），并补充尿素或浓缩物。这项研究是使用完全随机的设计在巴西SP卡洛斯的Embrapa Southeast Cattle进行的。处理之间的差异对于干物质，有机物质和能量的消化率具有重要意义。当给动物补充尿素时，甘蔗品种之间的差异确实发生在消耗NDF上，而不是每天的甲烷生产量上。这表明甘蔗化学成分的变化不会影响牛瘤胃CH4的排放。动物饮食中的浓缩物含量增加了可消化有机物的摄入量，改善了动物的营养摄入量，但并未减少CH4的产生，以总能量摄入的百分比表示。

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