Rangeland Ecology & Management

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Season and plant species influence foraging efficiency of Nguni goats in pens
Author
Mkhize, N R
Scogings, P F
Dziba, L E
Nsahlai, I V
Publisher
African Journal of Range & Forage Science
Publication Year
2011
Body

This study investigated the seasonal and plant species patterns of short-term intake rate (STIR) by Nguni goats fed six common browse species in subhumid subtropical savannas. Six 2-year-old castrated Nguni goats weighing an average of 26 kg each were penned individually and maintained on a basal diet of ram, lamb and ewe pellets and grass hay. The STIR was influenced by season, with the highest mean STIR recorded during the dry season (mean ± SEM: 0.18 ± 0.012 g DM s?1) and least during the late wet season (0.15 ± 0.009 g DM s?1). Broadleaf species had higher STIR than fine-leaf species (0.18 ± 0.052 g DM s?1 vs 0.14 ± 0.055 g DM s?1). Species that produce new leaves on new long shoots were consumed at higher rates than those that produce new leaves on short shoots (0.19 ± 0.054 g DM s?1 vs 0.15 ± 0.056 g DM s?1). STIR showed no clear patterns in relation to leaf chemistry. These results can be used to improve estimates of intake rates from free-foraging animals using direct observation methods based on time spent at a feeding station depending on the plant species and the season in which it is consumed.

Language
English
Resource Type
Text
Document Type
Journal Issue/Article
Journal Volume
28
Journal Number
1
Journal Pages
29-34
Journal Name
African Journal of Range & Forage Science
Keywords
browser
conditioning
feeding behaviour
herbivore
intake rate
goats
Fodder
diet selection
foraging ecology
management
South Africa