Presenter Information

C E. Lascano, CIAT
P Avila, CIAT

Publication Date

1993

Description

A grazing experiment was carried out at CIAT's Quilichao research station to assess the effect of legumes selected for acid soils on milk production of cows with different genetic potential. Pastures of Brahiaria dictyoneura cv. Llanero and Andropogen gayanus cv. Carimagua l, alone and in association with Centrosema acutifolium (CIAT 5568) and C. macrocarpum (CJAT 5713), were grazed by Holstein and Zebu crossbred cows using a Latin square crossover design. Fat corrected milk (FCM) yield of Holstein cows was 17 and 19% higher in the associations of B. dictyoneura and A. gayanus, respectively, than in the grass-only pastures. With the Zebu crosses PCM yield was 13% higher in the B. dictyoneura ra-legume pastures, but no response was observed in the A. gaya,ms-legume pastures. Milk composition was not affected by pasture treatment. Results suggest that grass-legume pastures selected for acid soils can significantly increase milk production, particularly when cows have medium genetic potential.

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Milk Yield of Cows with Different Genetic Potential on Grass and Grass-Legume Tropical Pastures

A grazing experiment was carried out at CIAT's Quilichao research station to assess the effect of legumes selected for acid soils on milk production of cows with different genetic potential. Pastures of Brahiaria dictyoneura cv. Llanero and Andropogen gayanus cv. Carimagua l, alone and in association with Centrosema acutifolium (CIAT 5568) and C. macrocarpum (CJAT 5713), were grazed by Holstein and Zebu crossbred cows using a Latin square crossover design. Fat corrected milk (FCM) yield of Holstein cows was 17 and 19% higher in the associations of B. dictyoneura and A. gayanus, respectively, than in the grass-only pastures. With the Zebu crosses PCM yield was 13% higher in the B. dictyoneura ra-legume pastures, but no response was observed in the A. gaya,ms-legume pastures. Milk composition was not affected by pasture treatment. Results suggest that grass-legume pastures selected for acid soils can significantly increase milk production, particularly when cows have medium genetic potential.