The Effectivity Formaldehyde Dillution as Protein Protector on Gaseous Production of High Protein Feedstuffs

Protein in the diets is degraded by ruminant animal by two ways. First, dietary protein is degraded by rumen microbes to produce microbial protein. Second, any rumen undegraded protein will be moved to the small intestine to be digested by the host animal. Soybean meal, soy bean groats, corn gluten meal, dried distillers grains with solubles (DDGS), and fish meal, are high protein feed ingredienrs that can be used in ruminant feeds. Unfortunately, degradation efficiency of the high protein feedstuff will be lowered as crude protein in the rumen will be converted to ammonia in excessive amount (more than required by the microbes), which in turn will reduce crude protein supply in the small intestine. This might indicate that high protein ration could not be used optimally by the host animal. The crude protein degradution in the rumen can be reduced using formaldehyde (HCHO) treatment. However, without being diluted, the HCHO dilution on gas production was tested using 1% (v/v; DM basis) formaldehyde. Feed ingredients and dilution levels were analyzed as 5x4 factorial arrangement in a Completely Randomized Design. The levels of aquadest- formaldehyde dilution were composed in formula of 1:0, 1:2, 1:3, and 1:4. Results showed that interaction of formaldehyde dilution with soybean meal and corn gluten meal significantly reduced gas production (P