Revista Brasileira de Zootecnia | |
Methane emissions and estimates of ruminal fermentation parameters in beef cattle fed different dietary concentrate levels | |
Lima, Magda Aparecida de1  Pedreira, Márcio dos Santos2  Oliveira, Simone Gisele de3  Frighetto, Rosa Toyoko Shiraishi1  Primavesi, Odo1  Berchielli, Telma Teresinha4  | |
[1] EMBRAPA;Universidade Estadual do Sudoete da Bahia;Universidade Federal do Paraná;Unesp | |
关键词: global greenhouse gases; nutritional value; rumen fermentation; SF6 Introduction Measurements of ruminal methane emissions are of great importance since they allow for the quantification of two important aspects: greenhouse gas emissions and ingested energy losses by ruminants (Animut et al; | |
DOI : 10.1590/S1516-35982013000800009 | |
学科分类:兽医学 | |
来源: Universidade Federal de Vicosa | |
【 摘 要 】
Using sorghum silage, the effect of roughage/concentrate ratios was evaluated on nutrient intake, digestibility, ruminal parameters and methane production by beef cattle. Three treatments (0, 30 and 60% of concentrate in DM of the diet) were distributed in three Latin squares, with nine animals and three periods. Dry matter intake increased as the grain concentration in diet increased; pH showed opposite behavior. Methane emissions were lower for animals fed the diet exclusively with sorghum silage as compared with those fed 30% of concentrate, but was similar to that of animals receiving 60% of concentrate. Losses of ingested gross energy as methane were reduced by 33% when grain concentration was increased in the diet. Concentrations of propionic and butyric acids were greater in diets with grain concentrate; acetic acid concentration was not affected. Concentrate in diet increases available energy for the metabolism, measured by lower losses of ingested gross energy as ruminal methane.
【 授权许可】
CC BY-NC
【 预 览 】
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RO201911300392258ZK.pdf | 333KB | download |