Publication Date

1989

Description

Relationship of forage availability, animal growth, and reproduction have been studied in both humid "improved" pastures (Adje et al., 1980; Guerrero et al., 1984; Bransby et al., 1988) and semi-arid "native" rangelands (Hart, 1972, 1978) but no study has been reported in which the two ecosystems hav􀁅 b􀁆en compared in terms of these relationships. Forage ava1lab1hty 1s one of the primary variables that can be easily controlled by cattle producers and thus the relationship to per­formance and reproduction is of fundamental importance. The purpose of this experiment was to determine if the patterns of relationship between forage availability and animal perform­ance or reproduction are similar for two divergent subtropical ecosystems: humid, "improved", intensively managed pastureland and semi-arid, "native", extensively managed rangeland.

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Influence of Forage Availability on Growth and Reproduction of Brahman-Hereford (F-1) Females Grazing Humid Pastures and Semi-Arid Rangelands

Relationship of forage availability, animal growth, and reproduction have been studied in both humid "improved" pastures (Adje et al., 1980; Guerrero et al., 1984; Bransby et al., 1988) and semi-arid "native" rangelands (Hart, 1972, 1978) but no study has been reported in which the two ecosystems hav􀁅 b􀁆en compared in terms of these relationships. Forage ava1lab1hty 1s one of the primary variables that can be easily controlled by cattle producers and thus the relationship to per­formance and reproduction is of fundamental importance. The purpose of this experiment was to determine if the patterns of relationship between forage availability and animal perform­ance or reproduction are similar for two divergent subtropical ecosystems: humid, "improved", intensively managed pastureland and semi-arid, "native", extensively managed rangeland.