Plant breeding for reducing environmental impact in ruminant agriculture
Ruminant livestock play an important role in global food security as they can convert the ligno-cellulosic and non-protein nitrogen compounds, found widely in plants but indigestible to all monogastric animals including man, into high value proteins for human consumption.However, ruminant production has been known to make a large contribution to greenhouse gases (GHG) emissions which can be attributable to food production, and this is of great concern to the livestock industry globally.Anaerobic conversion of plant biomass in the rumen is considered to be inefficient in terms of nitrogen and energy use, leading to significant contribution of GHG emissions, potential water pollutants and a concomitant loss of production potential.Efforts have been made to improve the nutritional characteristics of plant and subsequently to increase the efficiency of production, i.e.maintenance of production at reduced inputs, or increased production at the same level of inputs.These include breeding for increased water soluble carbohydrates to make best of use rapidly available nitrogen sources in the plant, and ways of reducing protein degradability within the rumen such as polyphenol oxidase enzymes and condensed tannins.Plant improvement has a vital role in increasing productivity of ruminant livestock at the same time as reducing the environmental impact of livestock farming.
water-soluble carbohydrates greenhouse gases PPO ruminants
Eun Joong Kim Nigel D.Scollan
Department of Animals Science, Kyungpook National University, Sangju 742-711, Korea;Institute of Bio Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, SY23
国际会议
The 5th China-Japan-Korea Grassland Conference(第五届中-日-韩国际草地会议)
长春
英文
9-13
2014-08-20（万方平台首次上网日期，不代表论文的发表时间）