|Title||Effects of volatile compounds on consumption of alfalfa pellets by sheep|
|Publication Type||Journal Article|
|Year of Publication||1998|
|Authors||Estell R.E., Fredrickson E.L., Tellez M.R., Havstad K, Shupe, W. Larry, Anderson D.M., Remmenga M.D.|
|Journal||Journal of Animal Science|
|Keywords||diets, intake, sheep, terpenoids|
We examined the effects of six volatile compounds on alfalfa pellet consumption by lambs. In each experiment, 45 lambs were individually fed alfalfa pellets sprayed with a selected compound (camphor, limonene, cts-jasmone, â -caryophyllene, borneol, or -pinene) at one of five concentrations. Treatment concentrations were multiples (0, .5, 1, 2, and 10) of the concentration of a specific compound (X) that was related to differential herbivory of tarbush by livestock in previous studies. Treatments were applied to alfalfa pellets (.64 kg-lamb^-d"1, DM basis), and consumption was measured during a 20-min interval each morning for 5 d. Lambs were adapted to handling procedures and the pelleted diet (without treatments) for 10 d, Lambs were maintained and fed (approximately 4.5 to 5% of BW as one group except during 20-min tests. A negative linear effect of treatment concentrations on intake was observed for camphor (P <.02) -pinene (P< .01), and a quadratic response was detected for borneol (P <.02). The other three compounds had no discernible effect on consumption. Although volatile compounds generally had only minor influences on consumption, the negative influences of -pinene and camphor concentrations on pellet consumption suggest that these monoterpenes may partially explain differential herbivory of individual tarbush plants by livestock.