Cottonseed meal is limited in young ruminants and monogastrics because it contains which toxin?

• A. Lectin
• B. Gossypol
• C. Aflatoxin
• D. Cyanide

Answer: (B)

Gossypol is the toxin that limits cottonseed meal in young animals and monogastrics. It’s a yellow pigment present in cottonseed that remains in the meal after processing. Gossypol is toxic because it disrupts cellular processes, can bind essential metals and proteins, and particularly damages heart tissue, leading to reduced growth, poor feed efficiency, and potentially serious health problems. Young animals and non-ruminants lack the rumen microbes that can help detoxify gossypol, so they are much more sensitive. In contrast, mature ruminants have some microbial capacity to detoxify gossypol in the rumen, allowing higher tolerances.

Lectins, Aflatoxin, and cyanide are not the primary reason cottonseed meal is restricted in these groups. Lectins are associated with other feeds and gut effects, aflatoxin concerns relate to mold contamination rather than the inherent cottonseed compound, and cyanide is linked to different feed sources.