Abstract
ABSTRACT The objective of this study was to evaluate performance and carcass and meat characteristics of lambs fed a solution of crude glycerin plus water (100 g kg−1 of dry matter) (GLY) during feedlot and pre-slaughter lairage. Data were analyzed as a 2 × 2 factorial (GLY available or not in feedlot and GLY available or not in the slaughterhouse). We evaluated the following treatments (feedlot/slaughterhouse): GLY/GLY, GLY/water, water/GLY, and water/water (control). Lambs fed a balanced diet for 70 days [...]
Highlights
The global concern with energy resources drives the search for possible fuel substitutes for oil
The objective of this study was to evaluate performance and carcass and meat characteristics of lambs fed a solution of crude glycerin plus water (100 g kg−1 of dry matter) (GLY) during feedlot and pre-slaughter lairage
Solution of crude glycerin plus water can be used as a dietary ingredient for lambs, since it improves hydration and does not change performance and carcass characteristics
Summary
The global concern with energy resources drives the search for possible fuel substitutes for oil. Several potential renewable energy sources, such as bioethanol and biodiesel, have arisen. The latter has shown significant growth in popularity in Brazil due to government incentives that established the addition of a minimum of 70 g kg−1 biodiesel in commercial diesel (Brasil, 2014). Given the increased amount of biodiesel production, there is a greater production of its byproduct, glycerin. Crude glycerin is being studied as feed for ruminants (Lage et al, 2010; Van Cleef et al, 2014; Lage et al, 2014) and non-ruminants (Lammers et al, 2008; Mendoza et al, 2010). The main constituent of glycerin, is an energy source for animals (Duttlinger et al, 2012)
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