Intake, Digestibility, and Rumen Metabolism of Feedlot Lambs Supplemented either Monensin or Increasing Doses of Copaiba (Copaifera spp.) Essential oil.

Autor: Oliveira, E. R., Abreu, F. S. S., Gabriel, A. M. A., Marques, O. F. C., Silva, J. T., Neves, N. F., Durães, H. F., Gandra, E. R. S., Gandra, J. R.
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Zdroj: Iranian Journal of Applied Animal Science; Mar2022, Vol. 12 Issue 1, p87-95, 9p
Abstrakt: This trial aimed to evaluate increasing levels of copaiba oil on dry matter intake and digestibility, rumen fermentation, microbial protein synthesis, and thermal regulation in lambs. Ten lambs (32.4±2.86 kg body weight and 6.1±0.4 months of age) were assigned to two concurrent 5 × 5 latin square design trials, in which the following treatments were randomly distributed to lambs: control (CON), a basal diet with no feed additives; basal diet plus monensin (MON, 25 mg/kg dry matter (DM)); and the basal diet pluscopaiba oil (CO), added at 0.5, 1.0, and 1.5 g/kg DM. The supplementation of copaiba oil (CO) did not influence the intake and digestibility of dry matter and nutrients. A quadratic effect was observed for the concentrations of propionate for lambs supplemented with CO. Lambs fed 1.0 g/kg DM of CO had a higher concentration of purine derivatives and microbial nitrogen and protein compared to lambs fed the ionophore. Copaiba oil (CO) positively influenced rumen fermentation and microbial protein synthesis, without altering dry matter consumption and digestibility. From these results, we suggest the use of 1.0 g/kg DM in growing lambs' diets. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index