Forage grass growth under future climate change scenarios affects fermentation and ruminant efficiency.
Forage grass growth under future climate change scenarios affects fermentation and ruminant efficiency.
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DOI：
10.1038/s41598-022-08309-7
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发表时间：
2022-03-15
影响因子：
4.6
通讯作者：
Kingston-Smith AH
中科院分区：
文献类型：
--
作者：
Hart EH;Christofides SR;Davies TE;Rees Stevens P;Creevey CJ;Müller CT;Rogers HJ;Kingston-Smith AH
随着人口的增加，获得反刍动物产品是全球粮食供应的一个重要因素。虽然反刍动物会导致气候变化，但气候变化也会影响反刍动物的生产。在这里，我们研究了植物对气候变化的响应如何影响饲料质量和随后的瘤胃发酵。近期气候变化模型（2050年）预测温度、二氧化碳、降水和天气系统变化的增加将对大田作物产生应激反应。我们假设，预先暴露于改变的气候条件会导致植物细胞成分的变化，也会导致植物细胞在摄入后对瘤胃的代谢反应发生改变。通过筛选5种不同气候情景下的10种牧草品种，研究了这种“应激记忆”效应，包括当前气候（2020年）、未来气候（2050年）、未来气候加上洪水、干旱或热冲击。虽然在产气量方面检测到不同品种的发酵差异，但与对照组相比，温度升高或二氧化碳的影响很小（2020年）。所有品种均表现出消化率下降，这与干旱或急性洪水处理导致的甲烷产量下降有关。这些结果表明，未来饲草品种的培育应着眼于对急性胁迫的耐受性，而不是长期气候。
With an increasing human population access to ruminant products is an important factor in global food supply. While ruminants contribute to climate change, climate change could also affect ruminant production. Here we investigated how the plant response to climate change affects forage quality and subsequent rumen fermentation. Models of near future climate change (2050) predict increases in temperature, CO2, precipitation and altered weather systems which will produce stress responses in field crops. We hypothesised that pre-exposure to altered climate conditions causes compositional changes and also primes plant cells such that their post-ingestion metabolic response to the rumen is altered. This “stress memory” effect was investigated by screening ten forage grass varieties in five differing climate scenarios, including current climate (2020), future climate (2050), or future climate plus flooding, drought or heat shock. While varietal differences in fermentation were detected in terms of gas production, there was little effect of elevated temperature or CO2 compared with controls (2020). All varieties consistently showed decreased digestibility linked to decreased methane production as a result of drought or an acute flood treatment. These results indicate that efforts to breed future forage varieties should target tolerance of acute stress rather than long term climate.
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影响因子：
2.7
作者：
Dekov, I;Tsonev, T;Yordanov, I
通讯作者：
Yordanov, I
DOI：
10.1660/062.115.0102
发表时间：
2012-04-01
期刊：
Transactions of the Kansas Academy of Science
影响因子：
--
作者：
Caudle, Keri L.;Maricle, Brian R.
通讯作者：
Maricle, Brian R.
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
影响因子：
7.3
作者：
Beha, EM;Theodorou, MK;Kingston-Smith, AH
通讯作者：
Kingston-Smith, AH
影响因子：
1
作者：
Benchaar, C;Pomar, C;Chiquette, J
通讯作者：
Chiquette, J