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Soluble glass bolus (SGB) with selenium (Se) was administered intraruminally to Se-deficient Philippine does to determine its effect on milk Se and to correlate the Se contents of does' milk and blood of does and kids. Five months after the Se administration, the does in the treated group (n = 14) had higher (p < 0.01) Se content in their blood (62.2 vs 25.7 micrograms/L) and milk (5.1 vs 2.5 micrograms/L) than does in control group (n = 13). Consequently, the blood Se of the kids (n = 14) from the treated does was higher (p < 0.05) than those kids (n = 13) in the control group (28.0 vs 5.1 micrograms/L). Blood and milk Se of does and blood Se of their kids correlated (p < 0.01) with each other. The increased Se level of does' milk because of Se supplementation was not regarded as a health hazard to humans.

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