South African Journal of Animal Science On-line version ISSN 2221-4062
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OBESE, F.Y. et al.Effect of concentrate supplementation during early lactation on plasma IGF-I concentrations and reproductive performance of dairy cows. S. Afr. j. anim. sci. [online]. 2011, vol.41, n.4, pp. 360-367. ISSN 2221-4062.