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| | ARS : Andrew J Roberts |
 | | Roberts, A.J., Paisley, S.I., Geary, T.W., Grings, E.E., Macneil, M.D. Associations of growth and carcass traits with attainment of puberty in heifers fed at two levels. |
 | | Roberts, A.J., Echternkamp, S.E. Associations among changes in estrogen concentrations in the first wave dominant follicle and steroid concentrations in other antral ovarian follicles in beef cows [abstract]. |
 | | Roberts, A.J., Jenkins, T.G. Effects of varying energy intake and sire breed on duration of postpartum anestrus, IGF-1 and GH in mature crossbred cows. |
| www.ars.usda.gov /pandp/people/people.htm?personid=4755 (1324 words) |
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