Effect of rumen protected methionine supplementation on early lactational responses of dairy cows fed a grass silage and cereals diet
1999
Iwanska,S. | Strusinka,D. | Pysera,B.
The milk yield limiting potential of a diet based on grass silage (40%), hay (15%), dried sugar beet pulp (13%) and grain compound mixture (32%) was investigated in 28 multiparous cows in early lactation randomly assigned to 2 treatment groups: a control group and a group receiving supplementary rumen protected methioninie (RPMet) treatment (12 g intestinally available methionine/head daily, given 1-120 days post partum; SmartamineTM; RPAN's technology).The diet was formulated to meet the requirements for protein and dry mass, milk lactose and milk urea contents.Responses for mean daily milk yield, mean milk fat and milk protein yields were higher (P0.05) in cows supplied with RPMet than in controls.Mean daily milk yield, milk protein and milk fat yields increasedby 2.4 kg, 108 g and 124 g, respectively.
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