Growth performance and digestion of growing lambs fed diets supplemented with glycerol

Two experiments were conducted to evaluate the effects of replacing corn with an increasing concentration of high-purity glycerol (>99%) on growth performance, economical efficiency, blood constituents and nutrient digestibility of growing lambs. In experiment one, 24 male lambs (initial BW=33.6±...

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Bibliographic Details
Published in:Animal (Cambridge, England) England), 2018-05, Vol.12 (5), p.959-963
Main Authors: Saleem, A. M., Singer, A. M.
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena
Animals
Biodiesel fuels
blood metabolites
Body Weight
Cattle
Cholesterol
Corn
Diet
Diet - veterinary
Dietary Supplements
Digestibility
Digestion
Dry matter
Feed efficiency
Feeds
Globulins
Glycerol
Glycerol - administration & dosage
lamb
Male
Nutrition
Organic matter
Research Article
Sheep - physiology
Weaning
Zea mays
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Summary:Two experiments were conducted to evaluate the effects of replacing corn with an increasing concentration of high-purity glycerol (>99%) on growth performance, economical efficiency, blood constituents and nutrient digestibility of growing lambs. In experiment one, 24 male lambs (initial BW=33.6±6.0 kg; age=6.75±0.75 months) were randomly assigned to one of the three experimental treatments containing 0%, 5% or 10% glycerol to replace corn in concentrate. In experiment two, nine lambs (initial BW=44.7±2.2 kg, age=8.84±0.32 months) were used in a digestion trial with three treatments (three lambs per treatment) with glycerol replacing corn at 0%, 5% or 10% in the concentrate. Total dry matter (DM) intake decreased quadratically (P=0.003) with increasing concentration of glycerol in the diet. Lambs fed glycerol diets had greater average daily gain (P=0.005) and better feed efficiency (P=0.002) compared with the control. Feed costs were also reduced with glycerol inclusion. Glycerol supplementation did not affect serum concentrations of total protein, albumin, globulin, total lipid, cholesterol and glucose concentrations. Glycerol supplementation had no effect (P>0.05) on organic matter and CP digestion, but improved DM (P=0.0003), crude fiber (P=0.10), ether extract (P=0.0002) and nitrogen-free extract (P=0.05) digestion. In conclusion, glycerol can replace corn up to 10% of DM in the diets of growing lambs.
ISSN:1751-7311
1751-732X
DOI:10.1017/S1751731117001793