Resumo

LAMELA, L et al. Effect of the silvopastoral system on the productive performance of Holstein cows. Pastos y Forrajes [online]. 2009, vol.32, n.2, pp. 1-1. ISSN 0864-0394.

With the objective of evaluating the productive performance of Holstein cows in associated systems of Leucaena leucocephala and Cynodon nlemfuensis, without applying chemical fertilizers, this work was carried out in two dairy units: 98 and 100 of the Livestock Production Genetic Enterprise of Matanzas, Cuba, which had an area for pastures of 35,5 ha and 3 ha for producing sugarcane forage. The milk production per milking cow and total production per cow were determined, as well as the influence of the two-month period of production, season and year on the productive performance. Leucaena had CP values higher than 20% and the grass between 7,4 and 9,5%; the DM availability was 3,4 and 2,5 t/ha/rotation for the dry and rainy season, respectively. Significant differences were found within each unit for the effect two-month period of production. In turn, 86 and 65% of the cows had a body condition (BC) between 3,0 and 3,5 for the rainy and dry season, respectively. The average milk production of the cows, for the BC 2,5; 3,0; 3,5 and 4,0; was 6,5; 8,0; 7,7 and 6,0 kg/cow/day, respectively. The system was concluded to show an acceptable DM availability (3t/ha/rotation) and the animals showed a favorable body condition for milk production, with values between 6,8 and 8,8 kg/cow/day.

Palavras-chave : Body condition; milk production; silvopastoral systems.

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