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These terms define your current search. Click the × to remove a term. Biological Sciences: physiology > animal physiology > animal reproduction > animal fertility > reproductive efficiency × 83 items, grouped by Taxa - Archaea, Cyanobacteria and Bacteria (view ungrouped items) Eubacteria (5)    (Click to View) Phenotypic variations between non-transgenic and transgenic maize hybrids Field crops research (Click to View) Effects of vaccination against reproductive diseases on reproductive performance of beef cows submitted to fixed-timed AI in Brazilian cow-calf operations Theriogenology (Click to View) Herd-level risk factors for Campylobacter fetus infection, Brucella seropositivity and within-herd seroprevalence of brucellosis in cattle in northern Nigeria Preventive veterinary medicine (Click to View) Influence of leptospirosis on reproductive performance of sows in Brazil Theriogenology (Click to View) Effects of Bacillus cereus var. toyoi on immune parameters of pregnant sows Veterinary immunology and immunopathology