African Journal of Biotechnology

Log in or Register to get access to full text downloads.

Remember me or Register

Optimum stocking rate for goat production on improved highland pastures in South-western China

Zhu Xiao-yan, Chang Shu-juan, Zhang Ying-jun, Luo Hai-ling


The effects of four stocking rates (SR; 7.5, 15, 30 and 45 goats ha-1) on goat performance and herbage productivity were examined on the perennial pastures. The experiment was applied by grazing 65 six-months old Chinese Yunling black goat wethers for two years. Significant year × SR interactions were observed on standing crop (SC). A linear negative correlation was found for average daily gain (ADG) and SR, and a linear positive correlation for ADG and SC was found. SR had a significant quadratic relationship to gain per hectare (GH), but a significant linear negative relationship to SC. The SR at which GH was optimal ranged from 29.1 to 34.3 goats ha-1, with corresponding levels of SC in the range of 138.9 to 150.1 g DM m-2 and utilization rate of pasture ranged from 63.1 to 74.3%. The study therefore provided a sustainable utilization approach for sown pastures in south-west China.

Key words: Black goat, grazing intensity, average daily gain, gain per hectare, South-west China.
AJOL African Journals Online