Low-purity crude glycerin as a nutrient substitute for corn: the effect on yields of goat organs and viscera

Gomes, Rayane NunesPaula, Talita Almeida deCarvalho, Francisco Fernando Ramos deCordeiro, Eduardo Henrique de AraújoNascimento, Hugo Fernando Araújo doMendes, Giorgio OliveiraOliveira, Ana Barros deVéras, Antonia Sherlânea Chaves

This study was conducted to evaluate the effects of the inclusion of low-purity crude glycerin (CG, 63.1% of glycerol) in the diets of feedlot-finished goats on the weights and yields of the non-carcass components, with are frequently used in regionals dishes (buchada and panelada). Forty castrated male goats with the initial mean body weight of 19.70 ± 2.30 kg were used. Experimental treatments consisted of inclusion of CG at levels of 0, 6, 12, and 18%, based on dry matter. The weights of the lungs, spleen, total organs (TWO), and TWO yield, as a function of the slaughter body weight, decreased linearly. It was shown that the rumen portion of the weight showed a quadratic effect, at the level of 10.71% of CG, with a minimum point of 0.37 kg. Similar behavior was observed for the reticulum, with a minimum point of 0.08 kg, at the level of 7.5% of CG. The weights and yields of the buchada and panelada were negatively influenced by the experimental diets. Low-purity crude glycerin may partially replace corn and be included in up to 6% of the dry matter of the finished goats' feedlot diet without adversely affecting weights and yields of organs, viscera, and regional dishes, such as buchada and panelada.

1. Panelada
2. Co-product
3. Buchada
4. Glycerol