Abstract

GAMBOA, Saúl Brenes -. Performance evaluation and rest period of three types of pastures. InterSedes [online]. 2018, vol.19, n.39, pp.133-145. ISSN 2215-2458.  http://dx.doi.org/10.15517/isucr.v19i39.34073.

The biomass production and nutrient quality of three grasses Brachipara, Brachiaria decumbens and Cynodon nlemfuensis were evaluated at different grazing intervals in Turrialba, Cartago, during a two-year evaluation period. For the three pastures, the green matter production obtained was more than 11 thousand kg/ha, the day before beginning grazing. An important feature was observed regarding the production of green matter with Brachipara grass, which was 35 days at 11,367 kg/ha. It is important to emphasize that this increase coincides with the maximum production of dry matter and crude protein, this conspicuously being an optimum time of re-entry of the animals to the pasture for this material and under the conditions where the test was carried out. Regarding the percentage of dry matter, a behavior that varied between 20 and 30% was observed, obtaining the highest values ​​with C. nlemfuensis, between 42 and 56 days after grazing. In Brachipara and B. decumbens, the highest contents were observed of crude protein that were 13% at 21 days and 15% at 35 and 42 days respectively. The lowest protein content at the end of the period was presented in C. nlemfuensis, which was 7% at 56 days, however at 21 days it reached the same protein percentage as the previous materials. Finally, Brachipara is the grass that occupies a shorter period to recover, around 35 days in comparison with the other pastures evaluated, since both C. nlemfuensis and B. decumbens require approximately 49 days of recovery, according to the data obtained in the study period.

Keywords : Brachipara - C; nlemfuensis - B; decumbens - Pasture growth..

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