Effects of pasture inclusion of mimosa on growth by sheep and goats co-grazing grass/forb pastures
Animut, G., A. L. Goetsch, G. E. Aiken, R. Puchala, G. Detweiler, C. R. Krehbiel, R. C. Merkel, T. Sahlu, and L. J. DawsonJournal of Applied Animal Research 31:1-10. 2007
Effects of mimosa alley-cropped in grass/forb pastures on growth performance of co-grazing sheep and goat wethers were determined. Eighteen sheep (Katahdin) and eighteen goats (> 75% Boer blood), with BW of 22 ñ 0.3 and 21 ñ 0.2 kg, respectively, and age of 4 to 5 months were used. Wethers grazed 0.4-ha pastures of grasses and forbs for 16 weeks. Three pastures with alley-cropped mimosa (W) and three without (WO) were divided into four paddocks for 2-week rotational grazing. Based on mimosa leaf mass at the beginning of grazing periods and animal days, daily consumption of mimosa leaf DM averaged 47 g per animal, although mimosa leaf harvest was complete long before the end of the grazing periods. Mimosa leaf samples averaged 2.81, 37.8, and 85.9% N, NDF and in vitro true DM digestibility (IVDMD), respectively. Forage mass (grass and forbs) was similar between treatments before (2928 and 2695 kg/ha) and after grazing (1507 and 1452 kg/ha for WO and W, respectively). Pre-grazed forage concentrations of N (1.25 and 1.24%) and NDF (64.5 and 63.8%) and IVDMD (52.9 and 56.2% for WO and W, respectively) were similar between treatments, as was also true post-grazing. ADG was numerically greater (P=0.17) for W vs. WO (70 vs. 51 g/d; SE = 7.7). In summary, alley-cropped mimosa increased nutritive value of the forage available for consumption. Nonetheless, mimosa had limited effect on growth performance of co-grazing sheep and goats perhaps because of decreasing mimosa leaf availability as 2-week grazing periods advanced or overall relatively low intake of mimosa leaf.
Extension Activities | Research Activities | Other Activities
Library Activities | Quiz | Search | About Us | Contact Us | Faculty & Staff
Research Extension Home | Top of Page
Copyright© 2000 Langston University Agricultural Research and Extension Programs
P.O. Box 730 Langston, OK 73050 Phone 405.466.3836