Animal nutrition

Diets based on low CP content and amino acids can reduce environmental footprint of livestock farming

In the LCA, the developmentally appropriate feeding of swine, broiler chickens, and laying hens with balanced amino acid profiles and low crude protein content, was evaluated according to the following criteria: global warming, acidification and eutrophication potential; blue water consumption; land occupation; and respiratory inorganics.

The analysis included feed raw material production, animal husbandry, and manure treatment emissions.

“Our system solution – based on a balanced amino acid profile, low crude protein content, and our amino acid products – can contribute significantly to reducing the environmental footprint of livestock farming, without compromising animal welfare,”​ said Dr Emmanuel Auer, head of Evonik’s animal nutrition business.

Essentially, the reduced protein levels lead to reduced nitrogen content of excretions, which in turn leads to reduced air and water nitrogen pollution.

The study was audited and certified by TÜV Rheinland, according to ISO 14040 and 14044.

Reductions in acidification, eutrophication 

Michael Binder, sustainability lead at the same business line, said the LCA demonstrated that Evonik’s ‘system solution’ can reduce acidification, eutrophication and the release of respiratory inorganic substances induced by ammonia.

The feed concept, as set up for the certified study, is very flexible and can be tailored to specific demands of customers, he added.

When asked by how much this system solution reduced acidification, eutrophication and nitrogen-based emissions, he firstly noted that the reduction potential is closely related to the particulars of a given production scenario including region, fam animal species, feed compositions, animal performance, climate impacts, and more.