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Cattle headcounts by country, as of 2021. Historically, the cattle population of Britain rose from 9.8 million in 1878 to 11.7 million in 1908, but beef consumption rose much faster. Britain became the "stud farm of the world" exporting livestock to countries where there were no indigenous cattle.
It is responsible for somewhere between 20 and 33% of the fresh water usage in the world, [57] and livestock, and the production of feed for them, occupy about a third of Earth's ice-free land. [58] Livestock production is a contributing factor in species extinction, desertification, [59] and habitat destruction. [60]
The census of agriculture’s reference period is the agricultural year. Thus, countries carefully schedule census activities to ensure that crop and livestock data are collected at the right time. In some countries, lockdown measures resulted in a full year postponement of the census data collection as the agricultural season was missed.
The IIA recommended the use of a "standard form" by all countries referring to the same census period. The 1929-1930 constituted the first world census of agriculture round and was implemented in about 60 countries. The 1940 census round was interrupted by the onset of World War II.
This is the list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present.
Production of some products is highly concentrated in a few countries, China, the leading producer of wheat and ramie in 2013, produces 95% of the world's ramie fiber but only 17% of the world's wheat. Products with more evenly distributed production see more frequent changes in the ranking of the top producers.
Even so, the 2007–2008 drought in Iran had already resulted in the country's sheep population declining by nearly 4 million – from 53.8 million in 2007 to 50 million in 2008, while the goat population declined from 25.5 million in 2007 to 22.3 million in 2008. [25]
They are raised as livestock for their flesh (called beef and veal), dairy products (milk), leather and as draught animals. As of 2009–2010 it is estimated that there are 1.3–1.4 billion head of cattle in the world. [47] [48] Diagram of feedlot system. This can be contrasted with more traditional grazing systems.