Self-control design reveals varied lactation and metabolic responses to rumen-protected methionine in dairy cows
Zi-Hai Wei; Shu-Lin Liang; Feng-Fei Gu; Jane Wamatu; Hui-Zeng Sun · 2025 · Animal Nutriomics
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract
One hundred and thirteen mid-lactation cows fed same diets and supplemented with 20 g/d rumen-protected methionine (RPM) for 8 weeks were used to investigate the individual responses of dairy cows to RPM in terms of lactation performance, amino acids (AA) metabolism, and milk metabolites. Among the cows, 10 cows exhibited positive responses (PR) and 10 cows showed limited responses (LR) in energy-corrected milk yield to RPM were used for further analysis. The lactation performance changed from gradual decline to steady increase in PR cows, while kept downward trend in LR cows following RPM sup
Abstract by Zi-Hai Wei; Shu-Lin Liang; Feng-Fei Gu; Jane Wamatu; Hui-Zeng Sun, Animal Nutriomics (2025) — licensed CC BY 4.0.
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Metadata source: DOAJ · DOI 10.1017/anr.2024.25