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Frontiers of Agricultural Science and Engineering

ISSN 2095-7505

ISSN 2095-977X(Online)

CN 10-1204/S

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Front. Agr. Sci. Eng.    2021, Vol. 8 Issue (1) : 1-14    https://doi.org/10.15302/J-FASE-2021384
EDITORIAL
INTEGRATING CROP AND LIVESTOCK PRODUCTION SYSTEMS—TOWARDS AGRICULTURAL GREEN DEVELOPMENT
Yong HOU1, Oene OENEMA1,2(), Fusuo ZHANG1
1. National Academy of Agriculture Green Development, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
2. Wageningen Environmental Research, Wageningen University and Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands.
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Corresponding Author(s): Oene OENEMA   
Just Accepted Date: 03 February 2021   Online First Date: 12 March 2021    Issue Date: 29 March 2021
 Cite this article:   
Yong HOU,Oene OENEMA,Fusuo ZHANG. INTEGRATING CROP AND LIVESTOCK PRODUCTION SYSTEMS—TOWARDS AGRICULTURAL GREEN DEVELOPMENT[J]. Front. Agr. Sci. Eng. , 2021, 8(1): 1-14.
 URL:  
https://academic.hep.com.cn/fase/EN/10.15302/J-FASE-2021384
https://academic.hep.com.cn/fase/EN/Y2021/V8/I1/1
Fig.1  Photos of mixed crop-livestock systems, household systems and specialized livestock in China.
Box 1Domestication of plants and animals
Only about 100 out of 200,000 wild species of higher plants have yielded valuable domesticates, and only 14 out of 148 large terrestrial animals, weighing 45 kg or more, have been domesticated[6,7]. In practice, just three plant species (wheat, rice and maize) and just three animal species (cattle, pigs and poultry) predominate in current crop and livestock production systems; these species together provide more than 60% of all energy and protein intake by humans[8]. The success of these species is related to their high yield potential, nutritive value, versatility and to globalization. The increasing homogeneity of food sources has been implicated in decreasing the genetic resources, and is seen as a risk for future food supply[9,10].
Tab.1  
Advantages Disadvantages
Greater buffer against market price fluctuations Greater requirement of expertise (double expertise needed)
Greater buffer against climate fluctuations Greater investment in diverse equipment
Greater nutrient recycling due to more direct soil-crop-animal manure relations Less opportunities for benefiting from economies of scale
More diversified income sources
More consistent labor demand
Better weed and disease control
Alternative use for low-quality roughage
Greater sources of security and savings
Greater investment options
Greater social functions
Tab.2  Advantages and disadvantages of mixed crop-animal systems compared to specialized crop and specialized livestock production systems[11]
Livestock products Grazing systems (%) Mixed systems (%) Intensive systems (%)
Cattle- milk 32.5 67.5 n.a.
Cattle- beef 30.7 57.1 12.2
Pork n.a. 43.8 56.2
Chicken- meat n.a. 1.8 98.2
Chicken- eggs n.a. 7.9 92.1
Tab.3  Relative share of the production of livestock products in grazing (including pastoral and commercial grazing systems), mixed crop-livestock (including mixed, household and intermediate systems) and intensive systems (including industrial systems and feedlots) in 2010 (source: HLPE, 2016[24])
Fig.2  Changes in the total stock number of dairy and beef cattle, pigs and poultry in the world from 1961 to 2019 (source: FAOSTAT).
Fig.3  Changes in the total population and urban population in China (million) (a), and fertility rate (births per 1,000 population) and average age (years) (b) from 1950 to 2019 (source: United Nations, Department of Economic and Social Affairs, Population Division. World Population Prospects: The 2019 Revision).
Fig.4  Changes in total production of wheat, rice, maize, vegetable and fruit (in Mt per year) (a), and in mean fertilizer nitrogen, phosphorus (P2O5) and potassium (K2O) use in China (in Mt per year (b) from 1961 to 2018 (source: FAOSTAT).
Fig.5  Changes in the total production of pork, poultry, beef, mutton and fish (in Mt per year (a), and in total excretion by livestock of manure nitrogen (N), phosphorus (P2O5) and potassium (K2O) in China (in Mt per year) (b) from 1961 to 2018 (source: calculated from FAOSTAT).
Fig.6  Changes in the import of animal-source food (milk powder, cattle beef and pork) (a) (in Mt per year) and the import of feed-source crop (soybean, maize and alfalfa (b) from 1980 to 2019 (source: FAOSTAT).
Fig.7  Livestock density in livestock units (LU) per ha of agricultural land per province in 2013 (source: China Statistical Yearbook).
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