Enhancing Metabolism and Milk Production Performance in Periparturient Dairy Cattle through Rumen-Protected Methionine and Choline Supplementation.

Summary

This review synthesises evidence on rumen-protected methionine and choline supplementation in periparturient dairy cattle, examining their roles in optimising nitrogen utilisation and metabolic homeostasis during the critical transition phase. The authors argue that RPM and RPC supplementation can mitigate the negative effects of reduced dietary crude protein whilst maintaining milk production and improving postpartum dry matter intake and fat-corrected milk yield. The findings are framed within the context of environmental sustainability (reduced nitrogen emissions) and metabolic recovery in early lactation.

Regional applicability

The review does not specify a geographic study location, appearing to synthesise global literature on dairy cattle nutrition. The findings are potentially applicable to United Kingdom dairy systems, particularly to intensive periparturient management strategies seeking to balance production with protein reduction and nitrogen efficiency; however, the practical transferability to UK conditions (breed, forage type, management systems) would require contextualisation with UK-specific feeding trials.

Key measures

Dry matter intake (DMI), non-esterified fatty acids (NEFA), milk yield, protein yield, fat-corrected milk (FCM), nitrogen utilisation, energy balance

Outcomes reported

The review examined how rumen-protected methionine (RPM) and choline (RPC) supplementation affect nitrogen utilisation, metabolic performance, and milk production in periparturient dairy cattle. Key outcomes included effects on dry matter intake, milk yield, fat-corrected milk production, and postpartum metabolic recovery.

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