There is a large EU project which looks at the role of legumes (eg. peas) in human nutrition and also as an animal feed.
On the matter of peas as a feed alternative to soy the project finds that peas can provide a realistic substitute for soy in feeds for animals of all types and that this would yield GHG and lower energy use benefits, albeit modest (the analysis takes into account land use change impacts of soy production eg. deforestation).
There is a large EU project which looks at the role of legumes (eg. peas) in human nutrition and also as an animal feed.
On the matter of peas as a feed alternative to soy the project finds that peas can provide a realistic substitute for soy in feeds for animals of all types and that this would yield GHG and lower energy use benefits, albeit modest (the analysis takes into account land use change impacts of soy production eg. deforestation).
It also has an overview paper that highlights the dependence of the livestock sector on soy at an EU level. The paper shows that this soy dependence is quite variable and differs according to the animal rearing regime. Less intensive systems with longer rearing times (the average life of a broiler varies between 35-80 days) use less soy. So the way to use less soy is to have less intensive rearing systems.
For more, see here.
And for their LCA comparison of a combination of nutritionally balanced pork versus pea-burger vegetarian meals, see here.
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