Judson et. al. 2009  evaluated Tonic plantain in New Zealand as a lactation feed for twin-bearing ewes lambing in August. This was a breakthrough, as no longer was ryegrass the sole focus of a forage species on summer live weight gain potential. The importance of Tonic's success in this series of studies was its ability to support a twin-bearing lactating ewe in late winter, and still produce big lambs by weaning. Tonic had an advantage of between 10 and 34% greater weaning weight than ryegrass over the four studies.

The graph on the left shows the increased production of Tonic plantain when compared to other varieties, Ranger and Hercules. What distinguishes Tonic from all other plantains on the market is its ability to be highly winter active when other plantains have limited growth.

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