Banca de QUALIFICAÇÃO: FRANCIELLE SOARES GONÇALVES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : FRANCIELLE SOARES GONÇALVES
DATE: 03/12/2021
TIME: 09:00
LOCAL: Web Conferência - Google Meet - meet.google.com/xzj-fecs-daj.
TITLE:

Use of essential oils as an alternative to monensin for beef cattle in confinement.

KEY WORDS:

Antibiotic, Ionophore, Rumen Modulation, Termination.

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

Monensin is an ionophore additive classified as an antibiotic, whose inclusion in the diet of beef cattle favors feed efficiency through better utilization of feed nutrients through rumen modulation. There is a concern with the permanence of antibiotic residues in the carcass, so the development of natural products that can serve as an alternative to monensin has been increasingly studied. The objective of this work was to evaluate the use of essential oils as an alternative to monensin for confined beef cattle. The performance, behavior, carcass characteristics and rumen and liver health of the animals were analyzed, as well as rumen and metabolic parameters. The experiment is being conducted in the experimental confinement of beef cattle at the Instituto Federal Catarinense, campus Araquari, located in the municipality of Araquari-SC, starting in June and ending in December 2021. 60 castrated male Braford breed animals with weight were housed. average live weight of 226 kg, from brood in a continuous grazing system on properties in the region. The treatments evaluated were: control (base diet consisting of corn silage and feedlot feed with 19% protein); Control + Monensin; Control + Essential Oils. Essential oils were selected by previous studies carried out by the CCPA Group company. A period of forty-two days was established for the animals to adapt to the aspects of nutrition and environment and a five-month experimental period, and at the end of the experiment all animals will be slaughtered. The animals are being individually weighed every thirty days of the experiment to analyze their performance. Rumen fluid and blood collections for analysis of rumen and metabolic parameters, respectively, were carried out on days 0, 21 and 50 of the experiment. On the rumen fluid samples, an in loco Ph evaluation was performed. 10 mL samples of rumen fluid were sent to a private laboratory for PCR analysis and the remainder was stored for further analysis of volatile fatty acids and ammonia. Blood samples are being analyzed in the laboratory for biochemical profile. Data on rumen and liver health will be collected on the day of slaughter. Until now, no statistical analysis of the data has been performed, however the results of weight gain of the animals have not shown any difference, but the consumption of animals in the monensin and essential oil groups has been similar and smaller than the control group, proving to be more efficient. It is expected that the results of this work indicate that essential oils can be an alternative to the ionophore monensin in the diet of feedlot cattle. Work is being carried out according to the planned schedule. Starting in January, the analysis of fatty acids and ammonia, statistics and the writing of the dissertation with defense scheduled for the month of May 2022 will be carried out.

BANKING MEMBERS:
Presidente - 1760760 - CARLOS EDUARDO NOGUEIRA MARTINS
Interno - 2613308 - DELANO DIAS SCHLEDER
Interna - 1046884 - ELIZABETH SCHWEGLER
Interno - 2017813 - RICARDO EVANDRO MENDES
Interna - 2408296 - SORAYA REGINA SACCO