Figure 1.
Figure 1.

Endophyte-infected tall fescue (E+) intake by lambs supplemented with sainfoin (SAIN), sainfoin and polyethylene glycol (SAIN+PEG), or not by lambs supplemented with fresh-cut sainfoin and beet pulp (SAIN), fresh-cut sainfoin plus polyethylene glycol mixed in beet pulp (SAIN+PEG), or beet pulp (CTRL; DM basis). Sainfoin was in full bloom stage or mid-vegetative stage in subperiods 1 and 2, respectively. Each value represents the mean of 12 animals. Vertical bars represent SEM.

 


Figure 2.
Figure 2.

Intake of and preference for endophyte-free tall fescue (E–) by lambs offered a choice between E– and orchardgrass (DM basis). Lambs were previously conditioned with endophyte-infected tall fescue supplemented with beet pulp (CTRL) or with endophyte-infected tall fescue supplemented with fresh-cut sainfoin and beet pulp (SAIN) or fresh-cut sainfoin plus polyethylene glycol mixed in beet pulp (SAIN+PEG). Each value represents the mean of 12 animals. Vertical bars represent SEM. For each day, *P < 0.05.

 


Figure 3.
Figure 3.

Average proportion of scans by grazing lambs when they had a choice of sainfoin and endophyte-infected tall fescue (E+). Lambs were previously conditioned with endophyte-infected tall fescue supplemented with beet pulp (CTRL) or with endophyte-infected tall fescue supplemented with fresh-cut sainfoin and beet pulp (SAIN) or fresh-cut sainfoin plus polyethylene glycol mixed in beet pulp (SAIN+PEG). Each value represents the mean of 6 (CTRL and SAIN+PEG) or 5 (SAIN) pairs of animals. Vertical bars represent SEM.

 


Figure 4.
Figure 4.

Average proportion of scans by lambs when they grazed a monoculture of endophyte-infected tall fescue (E+). Lambs were previously conditioned with endophyte-infected tall fescue supplemented with beet pulp (CTRL) or with endophyte-infected tall fescue supplemented with fresh-cut sainfoin and beet pulp (SAIN) or fresh-cut sainfoin plus polyethylene glycol mixed in beet pulp (SAIN+PEG). Each value represents the mean of 6 (CTRL and SAIN+PEG) or 5 (SAIN) pairs of animals. Vertical bars represent SEM. For each day, *P < 0.05 and **P < 0.01.

 


Figure 5.
Figure 5.

Probability for a given plant of endophyte-infected tall fescue (E+) being defoliated for first, second, and third time by lambs previously conditioned with E+ and supplemented with beet pulp (CTRL) or with E+ supplemented with either fresh-cut sainfoin and beet pulp (SAIN) or fresh-cut sainfoin plus polyethylene glycol mixed in beet pulp (SAIN+PEG). All lambs grazed a monoculture of E+. Sampling was initiated on the first day of the grazing trial and then it was repeated every 2 d. Each value represents the mean of 6 (CTRL and SAIN+PEG) or 5 (SAIN) pairs of animals. Vertical bars represent SEM. For each day, *P < 0.05 and **P < 0.01.