Condensed tannin as anti-defoliate agent against browsing by giraffe (Girafla camelopardalis) in the Kruger National Park
The feeding behaviour of giraffes in the Kruger National Park, South Africa, was observed over 12 months and the diet analysed for condensed tannin content. Supportive evidence was found for plant defence against excessive browsing by means of tannin biosynthesis. Condensed tannin negatively influenced acceptability and nutritional value of dietary browse to giraffes. The giraffes avoided high condensed tannin levels. Tannin content of dietary foliage increased due to browse disturbance. Tannin levels fluctuated daily within the canopy of individual plants