Bioeconomic analysis of crude glycerin levels in milk crossbred cows diets fed with sugarcane

Lucas Teixeira Costa, Fabiano Ferreira da Silva, Aureliano José Vieira Pires, Paulo Bonomo, Eli Santana de Oliveira Rodrigues, Dicastro Dias de Souza, Aires Lima Rocha Neto, Roberio Rodrigue Silva, Alex Resende Schio


The viability of bioeconomic increasing levels of crude glycerin was evaluated, 0, 4, 8 and 12% of dry matter in diets of lactating dairy cows fed with sugarcane. Were used 16 cows Holstein x Zebu (blood level varying from ½ to ¾ Holstein), third or fourth lactation with previous production between 3000 and 4000 kg, adjusted to 300 days, and 80 to 120 days of lactation in beginning of the experiment, which were divided into four 4x4 Latin Square. The information required for elaboration of this work and composition of the costs, (prices, lifetime, etc.) were collected from the farmers, extension workers and rural businesses in the region, in January-December 2010. Studying the viability bioeconomic levels of glycerin in the diet it was concluded that the inclusion of crude glycerin was effective in productivity, promoting a linear increase (P<0.05), and profitability and did not affect dry matter intake (P>0.05) with a viable use in diets of lactating dairy cows in the present experimental conditions. The diet with the highest rate of crude glycerin inclusion, 12% of dry matter, would be more appropriate.



Costs; Milk; Price; Productive; Systems of production.


Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional