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Jul 4, 2017 · A report from the Humane Party analyzes the land-use, efficiency, and profitability of animal farming versus plant farming. The fact that animal agriculture is much more resource intensive than plant agriculture has become fairly well known among animal advocates.
- Animals Are Inefficient Converters of Food
- What Are Feed Conversion Ratios?
- Feed:Meat Ratios –> Calculating FCRS
- Fcr Mainstream Examples
- More Comprehensive FCRS
- Energy Flows in The Broader Food System
- Conclusion: Feed vs. Food
- Additional Notes
- Recommended Sources
That farmed animals consume more food than they produce is undisputed. The question is not “IF” animals are inefficient food converters, but “HOW” inefficient are they? How much food (calories, protein, and nutrients) is lost by cycling crops through animals for meat versus eating a plant-based diet directly? And what are the consequences to food s...
Feed Conversion Ratios (FCRs) measure the amount of feed/crops needed to produce a unit of meat. FCRs and related issues are generally discussed in terms of “efficiency.” For example, chickens are more efficient converters crops than cows. They have a lower FCR, meaning that it takes less feed to create a pound of chicken than a pound of beef. Howe...
For practical reasons, feed ratios are generally assigned based on animal species (see below). Broad estimates are sometimes even used to represent the entire category of meat (ex: meat requires 10x more crops than feeding people directly). We also use these shortcuts for illustrative purposes, while acknowledging that there is wide variation in th...
Live Weight 1. 6:1 – beef cows – Beef Magazine(industry) 2. 6:1 – beef cows, 3.4:1 – pigs, 2:1 – poultry – Noble Foundation(industry) 3. 7:1 – beef cows, 4:1 – pigs, 2-1 – chickens – Brown(advocate) 4. 8-12:1 – beef cows, 5-6.5:1 – pigs, 2-2.5:1 – chickens – Smil (p.157) via Cassidy(p.6) Edible Weight (more accurate) 1. 16:1 – beef cows – Lappe(Die...
Percent/Units of Edible Output per 100 Units of Feed 1. Poultry – Calories – 11% – Protein 20% 2. Pigs – Calories – 10% – Protein 15% 3. Cows/Beef – Calories – 1% – Protein – 4% Source: World Resources Institute (w/UN & WB): Creating a Sustainable Food Future, p.37 New, more comprehensive methods show that even the high-end of commonly cited FCRs a...
The inefficiencies expressed as “units of edible output per 100 units of feed input,” are lower than the previous feed conversion calculations because they are based on energy flows from plant phytomass to edible animal parts. For example, they factor in feed that gets wasted before it reaches livestock animals, the plant mass that goes to non-feed...
Regardless of the exact numbers, producing crops (soy, corn, wheat, etc.) for animal feed is many times more resource-intensive than using crops for direct human consumption. While there are perilous trade-offs related to fuel vs. food, a more serious concern for a variety of reasons is feed vs. food. With 75% of all agricultural land used for anim...
From the Vegetarian Resource Group “[F]eed is not synonymous with “concentrates” such as grains and legumes. Some USDA tables may use “as-fed” feed values which means the moisture content of the feed (which may vary between 7 and 70% of the feed weight itself) is included. Similar tables found in other sources may be based on ‘dry matter weight’ wh...
Cassidy, Emily et al, “Redefining Agricultural Yields: From Tonnes to People Nourished Per Hectare.” Environmental Research Letters, V. 8(3). IOPScience, September 2013, p. 2-3. http://iopscience.iop.org/1748-9326/8/3/034015 Smil, Vaclav, Feeding the World: A Challenge for the 21st Century, MIT Press, 2000, p. 145-157. Yacoubou, Jeanne, “Factors In...
Oct 27, 2020 · Have you noticed a bumper crop of acorns this year? You’re not alone – it seems that across the UK, oak trees are having what’s known as a mast year. The bountiful harvest is a clever strategy to ensure the future generation of oak trees and it’s welcome food for wildlife too.
Mar 4, 2021 · Research suggests that if everyone shifted to a plant-based diet, we would reduce global land use for agriculture by 75%. This large reduction of agricultural land use would be possible thanks to a reduction in land used for grazing and a smaller need for land to grow crops.
Apr 20, 2016 · Because many animal-based foods rely on crops for feed, increased demand for animal-based foods widens the food gap relative to increased demand for plant-based foods. This chart is based on data from the Working Paper, Shifting Diets for a Sustainable Food Future.
Sep 13, 2021 · The GHG emissions allocated to crop feed and emissions from forage feed and temporary grazing feed productions, including fuel and energy use emissions, were all attributed to...
People also ask
Do animal-based foods widen the food gap?
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Could a plant-based diet reduce agricultural land use?
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What if the world adopted a plant-based diet?
Animal by-products, insects, and food wastes characterised by enhanced bioavailability of nutrients compared to most plant-based protein sources. Reduced risk for animal diseases (e.g., Foot and...
