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Assessment of Betaine and Glycerol as Ameliorants of Heat Load in Feedlot Cattle
The primary purpose of this study was to investigate the effect of betaine included at 0, 10, 20 and 40 g/head/day; and to investigate the effect of glycerol fed at an inclusion rate of 5% of dry matter intake on core body temperature and respiratory dynamics of feedlot steers over the summer months (120 days on feed). The dietary treatments were replicated across shaded and non-shaded pens. The study reports on these findings and the treatment impacts on animal productivity and animal welfare with associated economic production benefits.
The major findings from this study are: (i) provision of shade has economic ($40.66/per head) and welfare benefits over the summer months, (ii) addition of betaine did not improve performance or welfare outcomes, and (iii) addition of glycerol had a positive effect on HSCW but was not a cost effective supplement.
This study confirms that shade is the primary method for alleviation of heat load in black Bos taurus cattle.
This page was last updated on 24/07/2017
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