Production and economic analysis of milk from goats fed with double-distilled glycerin

Antonio Mendonça COUTINHO NETO, George Rodrigo Beltrão da CRUZ, Roberto Germano da COSTA, Uthana Oliveira ROCHA, Tamiris Matias da COSTA, Giullyann de Oliveira SALVIANO, Antônio Kaio Alves Rocha DUARTE, Lucas dos Santos ANDRADE, Gianluca Nunes FONSÊCA, Neila Lidiany RIBEIRO, Solange SOUSA
2022 Food Science and Technology  
The objective of this research was to evaluate the production, milk quality, consumption and financial analysis of milk from goats consuming diets with different levels of double-distilled glycerin. Twelve multiparous Saanen goats, weighing 40 ± 6 kg and 30 ± 5 days of lactation, kept in a confinement system for 60 days were used. The goats were randomly distributed in a Latin square (4 x 4), according to the levels of double-distilled glycerin. The ingredients used were tifton hay, ground corn
more » ... grain, soybean meal, vitamin/mineral supplement, urea, and double-distilled glycerin levels (0, 6, 12 and 18%) to replace corn in the diets. The milk fat of goats fed with double-distilled glycerin in the diet showed a decreasing linear regressive effect (P = 0.001). Dry matter intake showed a quadratic regressive effect (P = 0.033). Evaluating the total cost of each diet, it was observed that the level containing 0% glycerin was the diet with the lowest cost per kilogram. The use of double-distilled glycerin in the feeding of dairy goats can be recommended up to the level of 18% of corn replacement without harming milk production, however, it is necessary to verify the economic viability, considering that there will be losses in the quality of the milk produced.
doi:10.1590/fst.53522 fatcat:uoj3e6ewufbfplbrn6k54k7tqa