You are here: Home / Journal Articles / Foraging behaviour of beef heifers and ewes in natural grasslands with distinct proportions of tussocks / About

Foraging behaviour of beef heifers and ewes in natural grasslands with distinct proportions of tussocks

By Carolina Bremm, Emilio Andrés Laca, Lidiane Fonseca, Jean Carlos Mezzalira, Denise Adelaide Gomes Elejalde, Horacio Leandro Gonda, Paulo César de Faccio Carvalho

View Resource (HTM)

Licensed under

Category Journal Articles
Abstract

In natural grasslands, plant species preferred by grazing animals are intermixed with less preferred species. We hypothesise that increasing proportion of Eragrostis plana Nees tussocks, a non-preferred diet item in natural grassland, will constrain the accessibility of the preferred diet item for grazing animals, and sheep would be less restricted than cattle. The experimental paddocks contained approximately 0, 25, 50 and 75% E. plana, in vegetative stage. Inter-tussock areas were proportionally maintained at a non-limiting forage allowance. Records were made every 1-min of the stratum (tussock, inter-tussock or intra-tussock) grazed by each of four beef heifers or four ewes. Short-term intake rate was calculated for each 45-min grazing session by weighing the animals before and after grazing, and correcting for insensible weight losses (evaporative and gaseous losses). Beef heifers reduced grazing time on the inter-tussock areas by 0.60% per each 1% increment in tussock cover, whilst ewes exhibited a smaller reduction of 0.36% (P

Publication Title Applied Animal Behaviour Science
Volume 141
Issue 3
Pages 108-116
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2012.08.008
Cite this work

Researchers should cite this work as follows:

Tags
  1. Grasslands and rangelands
  2. Grazing
  3. Intake