Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa67a4 |
Long-term declines in dietary nutritional quality for North American cattle | |
Craine, Joseph M.1; Elmore, Andrew2; Angerer, Jay P.3 | |
2017-04-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | With over 1 billion cattle in the world as well as over 2 billion sheep, goats and buffalo, these animals contribute approximately 15% of the global human protein supply while producing a significant proportion of anthropogenic emissions of greenhouse gases and global nutrient fluxes. Despite increasing reliance on grazers for protein production globally, the future of grazers in a changing world is uncertain. Factors such as increased prevalence of drought, rising atmospheric CO2 concentrations, and sustained nutrient export all have the potential to reduce cattle performance by reducing the nutritional quality of forage. However, there are no analyses to quantify changes in diet quality, subsequent impact on cattle performance and cost of supplementation necessary to mitigate any predicted protein deficiency. To quantify the trajectory of nutritional stress in cattle, we examined more than 36 000 measurements of dietary quality taken over 22 yr for US cattle. Here, we show that standardizing for spatial and temporal variation in drought and its effects on forage quality, cattle have been becoming increasingly stressed for protein over the past two decades, likely reducing cattle weight gain. In economic terms, the replacement costs of reduced protein provision to US cattle are estimated to be the equivalent of $1.9 billion annually. Given these trends, nitrogen enrichment of grasslands might be necessary if further reduction in protein content of forages is to be prevented. |
英文关键词 | cattle climate change drought warming nutrition diet elevated CO2 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399281300001 |
WOS关键词 | TALLGRASS PRAIRIE ; CLIMATE-CHANGE ; NITROGEN ; DROUGHT ; CARBON ; PERFORMANCE ; ECOSYSTEM ; RETRANSLOCATION ; RESPONSES ; GRASSES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34261 |
专题 | 气候变化 |
作者单位 | 1.Jonah Ventures, Manhattan, KS 66502 USA; 2.Univ Maryland, Appalachian Lab, Ctr Environm Sci, Frostburg, MD 21532 USA; 3.Blackland Res & Extens Ctr, Texas A&M Agrilife Res, Temple, TX 76502 USA |
推荐引用方式 GB/T 7714 | Craine, Joseph M.,Elmore, Andrew,Angerer, Jay P.. Long-term declines in dietary nutritional quality for North American cattle[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(4). |
APA | Craine, Joseph M.,Elmore, Andrew,&Angerer, Jay P..(2017).Long-term declines in dietary nutritional quality for North American cattle.ENVIRONMENTAL RESEARCH LETTERS,12(4). |
MLA | Craine, Joseph M.,et al."Long-term declines in dietary nutritional quality for North American cattle".ENVIRONMENTAL RESEARCH LETTERS 12.4(2017). |
条目包含的文件 | 条目无相关文件。 |
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