450 Young Scholar Presentation: Methionine Supply Enhances Performance, Alleviates Inflammation and Alters Utero-Placenta Nutrient Transport in Dairy Cows.

Abstract:

Our research examined the effects of enhancing methionine supply on performance, immunometabolic responses, and utero-placental nutrient transport of dairy cows. Sixty multiparous Holstein cows were used in a block design and assigned to a control diet or the control plus rumen-protected methionine (RPM; Mepron, Evonik Nutrition & Care GmbH, Germany). Mepron was fed from −28 to 60 d relative to parturition at a rate of 0.09% and 0.10% of DM during the prepartum and postpartum period, respectively. That rate ensured that the ratio of Lys to Met in the MP was close to 2.8:1. Compared with control, during the fresh period (1-30 DIM) RPM increased DMI by 1.7 kg/d, milk yield by 4.1 kg/d, fat yield by 0.17 kg/d, and milk protein yield by 0.20 kg/d. During the high-producing period (31-60 DIM), cows fed RPM increased DMI by 1.45 kg/d, milk yield by 4.4 kg/d, fat yield by 0.19 kg/d, and milk protein yield by …

Año de publicación:

2018

Keywords:

Fuente:

google