Title | Seasonal changes in one seed juniper intake by sheep and goats in relation to dietary protein and plant secondary metabolites |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Utsumi S.A., Cibils AF, Estell R.E., Soto-Navarro S.A., VanLeeuwen D. |
Journal | Small Ruminant Research |
Volume | 81 |
Pagination | 152-162 |
Date Published | 2009/02/19 |
ARIS Log Number | 232654 |
Keywords | goats, journal, juniper, protein supplements, ruminant, secondary metabolites, sheep |
Abstract | Seasonal variation in plant secondary metabolites (PSM) can influence voluntary intake levels of one-seed juniper (Juniperus monosperma Englem. Sarg.) of sheep and goats. Supplemental nutrients could mitigate the deterrent effects of juniper PSM. We determined the concentration of mono-and sesqui- terpenes, total phenolics and condensed tannins in one-seed juniper leaves in summer, fall, winter, and spring, and tested their effects on juniper intake of 12 Western White Face ewes (74.9 ± 1.23 kg) and 12 Boer-Spanish does (46.7 ± 1.25 kg) fed isoenergetic diets (1.6% BW) with no supplemental protein (Control, 5% CP) or with addition of a rumen degradable (RDP, 12.5% CP) or undegradable (RUP, 12.5% CP) protein supplement. Animals were fed unrestricted amounts of freshly harvested juniper branches for 30 min and short-term juniper intake was determined for 10 d per season. Total terpenes, total phenolics, and condensed tannins varied across seasons (P |
URL | /files/bibliography/09-006.pdf |