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(A) In-vitro-fertilized embryo production of suckled cows supplemented with a complexed form of trace minerals (TRT) or a similar level of trace minerals from inorganic sources (CNT). Production of embryos tended to be greater for TRT than CNT pens (P = 0.06). (B) Ratio of recovered COCs to transferable embryo produced tended to be lower (signifying an increasing in efficiency) for TRT than CNT pens (P = 0.06).
