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Partially substituting alfalfa hay with hemp forage in the diet of goats improved feed efficiency, ruminal fermentation pattern and microbial profiles

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Animal Nutrition 2024年第2期17卷 49-60页

作者： Tao Ran Zhipeng Xu Wenzhu Yang Dalin Liu Duanqin Wu College of Pastoral agriculture Science and Technology Lanzhou University State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems Changshu Center for Animal Disease Prevention and Control Lethbridge Research and Development Centre Agriculture and Agri-Food Canada College of Animal Science and Technology Yangzhou University institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences

The use of hemp as a forage source in livestock diets has been less studied because bioactive residues in animal tissues may pose a risk to consumers. This study investigated the effects of partial substitution of alfalfa hay(AH) with hemp forage(HF) in growing goat diets on growth performance, carcass traits, ruminal fermentation characteristics, rumen microbial communities, blood biochemistry, and antioxidant *** Xiangdong black goats with body weight(BW) 7.82 ± 0.57 kg(mean ± SD) were grouped by BW and randomly assigned into one of the four treatment diets(n = 10/treatment) in a completely randomized design. The goats were fed ad libitum total mixed rations containing 60% forage and 40% concentrate(DM basis). The diets included control(CON; 60% AH and 40% concentrate), 55% AH and 5% HF(HF5), 50% AH and10% HF(HF10), and 40% AH and 20% HF(HF20). Increasing the substitution of HF for AH linearly decreased(P = 0.004) DM intake and improved feed conversion efficiency. However, final BW, average daily gain,carcass traits, meat quality, and most blood biochemistry indices did not differ among treatments. The ruminal NH3-N concentration(P = 0.003) and blood urine nitrogen(P = 0.050) linearly increased(P used to partially substitute AH in goat diets, whereas the effects vary between substitution rates of HF for AH. Although no cannabinoid-related residues were detected in meat, the presence of cannabinoids resid

关键词： Alfalfa hay Hemp forage Growth performance Ruminal microbiota Cannabinoid metabolism Goat

Research progress in assessment and strategies for sustainable food system within planetary boundaries

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Science China Earth Sciences 2024年第2期67卷 375-386页

作者： Minglei WANG Wenjiao SHI Key Laboratory of land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing100049China

Meeting the increasing food demand in a manner that ensures both resources and environmental sustainability poses a global *** conceptual framework of planetary boundaries(PBs)has emerged as a crucial reference in the study of sustainable food system,with specific focuses on key dimensions such as land use change,freshwater use,nitrogen(N)and phosphorus(P)cycles,and greenhouse gas(GHG)*** this study,we summarized the threshold applications of PBs in sustainable food system research at both the global and national(China)*** on these thresholds,we evaluated the sustainability conditions of the food system,considering resources such as cropland,freshwater,N and P applications,as well as environmental impacts including N and P losses,and GHG *** addition,we explored the impacts of single or combined management strategies on sustainable food *** strategies included dietary changes,improvements in technologies and management,reductions in food loss and waste,and optimization in agricultural production ***,we outlined future research directions in sustainable food system,including enhancing research on the interaction mechanisms among PBs elements within food systems,conducting downscaling studies of PBs elements at national and regional levels,and ensuring the rationality of policy-making for sustainable food systems in *** study can provide a theoretical foundation and strategies guidance for sustainable food system and agricultural land use management in the future both globally and in China.

关键词： food system Resource use Environmental impacts Sustainable strategy Planetary boundaries

Saline-alkali soil reclamation and utilization in China:progress and prospects

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Frontiers of agricultural Science and Engineering 2024年第2期11卷 216-228页

作者： Guangzhou WANG Gang NI Gu FENG Haley MBURRILL Jianfang LI Junling ZHANG Fusuo ZHANG State Key Laboratory of Nutrient use and Management(SKLNUM) College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China The institute of Ecology and Evolution University of OregonEugeneOR97403USA

Soil salinity is a global threat to the productivity of arable land. With the impact of population growth and development of social economy in China, the area of arable land has been shrinking in recent decades and is approaching a critical threshold of 120 Mha, the minimum area for maintaining the national food security. Saline-alkaline land, as important backup reserve, has been receiving increased attention as an opportunity to expand land resources. This review first summarizes the general principles and technologies of saline soil reclamation to support plant growth, including leaching salts or blocking the rise of salts, and soil fertility enhancement to improve the buffering *** the progress in this area in China is described including the customization of technologies and practices used in different saline-alkali regions. Following the soil management strategies, the concept of selecting crops for saline soil is proposed. This encompasses halophyte planting, salt-tolerant crop breeding and the application of saline-adapted functional microorganisms to improve the adaptation of crops. Finally, the current problems and challenges are evaluate, and future research directions and prospects proposed for managing this major soil constraint.

关键词： food security land reserve reclamation saline-alkali soil utilization

A Dietary Source of High Level of Fluoroquinolone Tolerance in mcr-Carrying Gram-Negative Bacteria

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Research 2024年第3期2023卷 105-121页

作者： Tianqi Xu Dan Fang Fulei Li Zhiqiang Wang Yuan Liu Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses College of Veterinary MedicineYangzhou UniversityYangzhou 225009China. Joint International Research Laboratory of agriculture and agri-Product Safety the Ministry of Education of ChinaYangzhou UniversityYangzhou 225009China. institute of Comparative Medicine Yangzhou UniversityYangzhou 225009China.

The emergence of antibiotic tolerance,characterized by the prolonged survival of bacteria following antibiotic exposure,in natural bacterial populations,especially in pathogens carrying antibiotic resistance genes,has been an increasing threat to public ***,the major causes contributing to the formation of antibiotic tolerance and underlying molecular mechanisms are yet poorly ***,we show that potassium sorbate(PS),a widely used food additive,triggers a high level of fluoroquinolone tolerance in bacteria carrying mobile colistin resistance gene *** studies demonstrate that PS treatment results in the accumulation of intracellular fumarate,which activates bacterial two-component system and decreases the expression level of outer membrane protein OmpF,thereby reducing the uptake of *** addition,the supplementation of PS inhibits aerobic respiration,reduces reactive oxygen species production and alleviates DNA damage caused by bactericidal ***,we demonstrate that succinate,an intermediate product of the tricarboxylic acid cycle,overcomes PS-mediated ciprofloxacin *** multiple animal models,ciprofloxacin treatment displays failure outcomes in PS preadministrated animals,including comparable survival and bacterial loads with the vehicle *** together,our works offer novel mechanistic insights into the development of antibiotic tolerance and uncover potential risks associated with PS use.

关键词： overcome thereby additive

Rice bran polysaccharide ameliorates ovalbumin-induced allergy and improves gut microbiota composition

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food Science and Human Wellness 2024年

作者： Bingjie Chen Yongjin Qiao Chong Wang Xiao Wang Yi Zhang Linglin Fu School of food Science and Biotechnology， Zhejiang Gongshang University institute of Crop Breeding and Cultivation， Shanghai Academy of agricultural Science

This study is the first investigation of the effects of polysaccharide extracted from rice bran (RBP) on ovalbumin (OVA)-induced allergy and the gut microbiota， which hasn't been reported previously. RBP in the medium-dose was found to significantly reduce the symptoms of food allergy (FA) in mice， lower the levels of histamine and allergen-specific (IgE)， and attenuate intestinal inflammation. Further studies demonstrated that RBP decreased allergy-associated responses in intestinal epithelial cells and Th2 cells while regulating Th1/Th2 differentiation to reach a dynamic equilibrium and downregulating Th2 polarization caused by allergies. Short-chain fatty acid (SCFAs) content and 16S rRNA sequencing revealed that RBP enhanced the abundance and diversity of the gut microflora and raised the content of SCFAs. These results suggest that RBP may mitigate FA by modulating the gut microbiota. This study revealed the effective use of rice bran and served as a basis for the development of innovative functional foods with anti-allergic properties.

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Quantifying the agreement and accuracy characteristics of four satellite-based LULC products for cropland classification in China

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Journal of Integrative agriculture 2024年第1期23卷 283-297页

作者： Jie Xue Xianglin Zhang Songchao Chen Bifeng Hu Nan Wang Zhou Shi Department of land Management Zhejiang UniversityHangzhou 310058China institute of Applied Remote Sensing and Information Technology College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China Department of land Resource Management School of Public Finance and Public AdministrationJiangxi University of Finance and EconomicsNanchang 330013China Key Laboratory of Data Science in Finance and Economics Jiangxi University of Finance and EconomicsNanchang 330013China Key Laboratory of Spectroscopy Sensing Ministry of Agriculture and Rural AffairsHangzhou 310058China

Various land use and land cover(LULC)products have been produced over the past decade with the development of remote sensing *** the differences in LULC classification schemes,there is a lack of research on assessing the accuracy of their application to croplands in a unified ***,this study evaluated the spatial and area accuracies of cropland classification for four commonly used global LULC products(i.e.,MCD12Q1V6,GlobCover2009,FROM-GLC and Globeland30)based on the harmonised FAO criterion,and quantified the relationships between four factors(i.e.,slope,elevation,field size and crop system)and cropland classification *** validation results indicated that MCD12Q1 and Globeland30 performed well in cropland classification regarding spatial consistency,with overall accuracies of 94.90 and 93.52%,*** FROMGLC showed the worst performance,with an overall accuracy of 83.17%.Overlaying the cropland generated by the four global LULC products,we found the proportions of complete agreement and disagreement were 15.51 and 44.72% for the cropland classification,*** consistency was mainly observed in the Northeast China Plain,the Huang-Huai-Hai Plain and the northern part of the Middle-lower Yangtze Plain,*** contrast,low consistency was detected primarily on the eastern edge of the northern and semiarid region,the Yunnan-Guizhou Plateau and southern *** size was the most important factor for mapping *** area accuracy,compared with China Statistical Yearbook data at the provincial scale,the accuracies of different products in descending order were:Globeland30,FROM-GLC,MCD12Q1,and *** cropland classification schemes mainly caused large area deviations among the four products,and they also resulted in the different ranks of spatial accuracy and area accuracy among the four *** results can provide valuable suggestions for selecting cropland products at the national or provinc

关键词： global LULC products cropland mapping accuracy evaluation food security China

Spatiotemporal characteristics of cultivated land use eco-efficiency and its influencing factors in China from 2000 to 2020

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Journal of Arid land 2024年第3期16卷 396-414页

作者： LI Shaoting MU Na REN Yanjun Thomas GLAUBEN College of Economics and Management Northwest A&F UniversityYangling 712100China Sino-German Center for agricultural and food Economics Northwest A&F UniversityYangling 712100China Leibniz institute of agricultural Development in Transition Economies(IAMO) Halle 06120Germany

Improving cultivated land use eco-efficiency(CLUE)can effectively promote agricultural sustainability,particularly in developing countries where CLUE is generally *** study used provincial-level data from China to evaluate the spatiotemporal evolution of CLUE from 2000 to 2020 and identified the influencing factors of CLUE by using a panel Tobit *** addition,given the undesirable outputs of agricultural production,we incorporated carbon emissions and nonpoint source pollution into the global benchmark-undesirable output-super efficiency-slacks-based measure(GB-US-SBM)model,which combines global benchmark technology,undesirable output,super efficiency,and slacks-based *** results indicated that there was an upward trend in CLUE in China from 2000 to 2020,with an increase rate of 2.62%.The temporal evolution of CLUE in China could be classified into three distinct stages:a period of fluctuating decrease(2000-2007),a phase of gradual increase(2008-2014),and a period of rapid growth(2015-2020).The major grain-producing areas(MPAs)had a lower CLUE than their counterparts,namely,non-major grain-production areas(non-MPAs).The spatial agglomeration effect followed a northeast-southwest strip distribution;and the movement path of barycentre revealed a"P"shape,with Luoyang City,Henan Province,as the *** terms of influencing factors of CLUE,investment in science and technology played the most vital role in improving CLUE,while irrigation index had the most negative *** should be noted that these two influencing factors had different impacts on MPAs and ***,relevant departments should formulate policies to enhance the level of science and technology,improve irrigation condition,and promote sustainable utilization of cultivated land.

关键词： cultivated land use eco-efficiency(CLUE) slacks-based measure(SBM)model barycentre model standard deviation ellipse(SDE) panel Tobit model carbon emissions nonpoint source pollution

Assessment of the environmental kuznets curve within EU-27:Steps toward environmental sustainability(1990-2019)

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Environmental Science and Ecotechnology 2024年第2期18卷 91-103页

作者： Safwan Mohammed Abid Rashid Gill Kaushik Ghosal Main Al-Dalahmeh Karam Alsafadi Szilárd Szabó Judit Oláh Ali Alkerdi Akasairi Ocwa Endre Harsanyi institute of land use Engineering and Precision Farming TechnologyFaculty of Agricultural and Food Sciences and Environmental ManagementUniversity of DebrecenBöszörményi 138H-4032DebrecenHungary institutes for agricultural Research and Educational Farm University of DebrecenBöszörményi 138H-4032DebrecenHungary Department of Economics The Islamia University of BahawalpurPakistan Department of Mining Engineering Indian Institute of Engineering Science and TechnologyShibpurP.O.711103Botanic GardenHowrahWest Bengal711103India institute of Management and Organization Sciences Faculty of Economics and BusinessUniversity of DebrecenEgyetem Tér 14032DebrecenHungary School of Geographical Sciences Nanjing University of Information Science and TechnologyNanjing210044China Department of Physical Geography and Geoinformatics Faculty of Sciences and TechnologyUniversity of DebrecenEgyetem tér 14032DebrecenHungary Faculty of Economics and Business University of Debrecen4032DebrecenHungary Department of Trade and Finance Faculty of Economics and ManagementCzech University of Life SciencesPrague16500PragueCzech Republic Department of agricultural Economics Faculty of AgricultureKahramanmaras SütçüImam UniversityTurkey Department of agriculture Production Faculty of AgricultureKyambogo University P.O.B.1KyambogoKampalaUganda

Reducing environmental pollution is a critical goal in global environmental economics and economic *** European Union(EU)faces environmental challenges due to its development *** we present a comprehensive approach to assess the impact of carbon dioxide(CO_(2))emissions,energy consumption(EC),population structure(POP),economy(GDP),and policies on the environment within the EU using the environmental Kuznets curve(EKC).Our research reveals that between 1990 and 2019,the EU-27 experienced an increase of t1.18 million tonnes of oil equivalent(Mtoe)per year in energy consumption(p<0.05),while CO_(2)emissions decreased by 24.25 million tonnes(Mt)per year(p<0.05).The highest reduction in CO_(2)emissions occurred in Germany(7.52 Mt CO_(2)annually),and the lowest in Latvia(0.087 Mt CO_(2)annually).The empirical EKC analysis shows an inverted-U shaped relationship between GDP and CO_(2)emissions in the ***,a 1%increase in GDP results in a 0.705%increase in carbon emission,while a 1%increase in GDP2 leads to a 0.062%reduction in environmental pollution in the long run(p<0.01).These findings indicate that economic development within the EU has reached a stage where economic growth positively impacts the ***,this study provides insights into the effectiveness of environmental policies in mitigating degradation and promoting green growth in the EU 27 countries.

关键词： Invasion risk Climate change Adaptive genomic variation Genomic offset Habitat suitability

Prospects and limitations of soil amendment and irrigation techniques for the water-saving public urban greenery and ephemeral weed management in the sandy soils of the United Arab Emirates

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Journal of Arid land 2024年第9期16卷 1288-1302页

作者： Ayesha ALAM Elke GABRIEL-NEUMANN Department of Integrative agriculture College of Agriculture and Veterinary MedicineUnited Arab Emirates UniversityAl Ain 15551the United Arab Emirates ASPIRE Research institute of food Security in Drylands College of Agriculture and Veterinary MedicineUnited Arab Emirates UniversityAl Ain 15551the United Arab Emirates

Public urban greenery greatly contributes to the residential and tourist value of cities in the Gulf Region,but due to the hyper-arid climatic conditions,the cost of irrigation and plant maintenance is very *** strategies to reduce the monetary and ecological costs involve the cultivation of native xerophytic plantations,and/or the use of soil improvers to increase water-and nutrient-holding capacity of the sandy *** soil improvers based on mineral,organic,or synthetic materials have entered the United Arab Emirates(UAE)market in recent years,but there is considerable uncertainty about how they should best be used in combination with ornamental plant stands involving xerophytic native *** present study investigated the effect of soil amendment and deep pipe irrigation on perennial ornamental plant stands involving native plants(Tephrosia appolinea(Gel.)Link in combination with Aerva javanica(Burm.f.)*** Schult.)and native-exotic plants(*** in combination with Ruelia simplex ***)either or not topsoil and subsoil amendment with bentonite and hydrophobic sand under the irrigation water supply of less than 50%of reference evapotranspiration(ET0).After one year of cultivation,*** and ***(native ***)produced high biomass and exhibited high water use efficiency(WUE)as compared with *** and ***(native ***)combination given that no significant differences were found under the soil amendment *** stands thrived under irrigation water supply far below what is usually supplied to exotic ornamental stands in public parks of the Al Ain City,the ***,subsoil amendment in combination with deep pipe irrigation reduced the occurrence of weeds and increased the overall plant rooting *** results suggest that subsoil amendment and irrigation up to 60-80 cm depth can potentially control ephemeral weed infestation,which is a great challenge in various plant production systems of the

关键词： native and exotic plant communities competitive strength soil improvers urban plantation subsoil amendment weed management