Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Abstract

Abstract. Cows were divided into two groups -the fi rst was fed a diet based on extruded rapeseed cake (D-ERC), the second one was fed a diet based on extruded full-fat soybean (D-EFFS), both diets contained maize silage and meadow hay. The experiment was divided into 4 periods of 42 days. Intake of dry matter, crude protein and NEL was not aff ected by the treatment (P > 0.05) while the intake of PDIA, PDIN and PDIE was lower in D-ERC than in D-EFFS (P<0.05). Milk yield in D-ERC (22.6 kg.d , respectively (P < 0.01). Concentration of AA in blood plasma was not aff ected by the type of diet except of His and Ile that were higher in D-EFFS (P < 0.01).

Milk yield, milk composition, fatty acid profile and indices of milk fat quality as affected by feeding with extruded full-fat soybean

“…Soybean and rapeseed products are used in many European countries as excellent sources of high-quality protein and energy (Chouinard et al 1997, Brito andBroderick, 2007;Třináctý et al, 2016). However, FA profile of these two feeding components is different.…”