Comparative economic returns from artificial insemination and natural service in straightbred and crossbred Holstein herds in Venezuela von Holmann, F.J. (Cornell University, Ithaca, NY), Blake, R.W, Milligan, R.A, Oltenacu, P.A, Barker, R, Hahn, M.V

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Economic value of days open for Holstein cows of alternative milk yields with varying calving intervals [Feeding costs] von Holmann, Federico J, Shumway, C. Richard, Blake, Robert W, Schwart, Robert B, Sudweeks, E. Max

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Comparative Economic Returns from Artificial Insemination and Natural Service in Straightbred and Crossbred Holstein Herds in Venezuela1 von Holmann, F.J., Blake, R.W., Milligan, R.A., Oltenacu, P.A., Barker, R., Hahn, M.V.

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Economic evaluation of fourteen methods of estrous detection von Holmann, Federico J, Blake, Robert W, Shumway, C. Richard

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Low Cost Feeding Strategies for Dual Purpose Cattle in Venezuela von Townsend, P.W., Blake, R.W., Holmann, F.J., Van Soest, P.J., Sniffen, C.J., Sisler, D.G.

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Comparative profitability of United States Holstein artificial insemination sires in Mexico von Blake, R.W, Holmann, F.J, Gutierrez, J, Cevallos, G.F

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Economic value of days open for Holstein cows of alternative milk yields with varying calving intervals von Holmann, F.J, Shumway, C.R, Blake, R.W, Schwart, R.B, Sudweeks, E.M

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Spektator. Jaargang 7 von [tijdschrift] Spektator. Tijdschrift voor Neerlandistiek

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