Effects of canola oil and antioxidants on performance, serum parameters, carcass traits, and rumen fermentation patterns of Nellore cattle
| Autor: | C.M.L.P. Garrine, Marcus Antonio Zanetti, J.A. da Cunha, Lisia Bertonha Correa, C.Y.C. Yoshikawa, J. S. da Silva, Nara Regina Brandão Cônsolo, Sirley Luzia Figueiredo Silva, A. Saran Netto |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Rumen 040301 veterinary sciences medicine.medical_treatment Population Beef cattle Biology VITAMINA E Feed conversion ratio SF1-1100 Antioxidants 0403 veterinary science Meat tenderness Selenium Animal science medicine Animals Vitamin E Rumen parameters education education.field_of_study 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences 040201 dairy & animal science Animal Feed Diet Animal culture Tenderness Enrichment meat Feedlot Dietary Supplements Fermentation Body Composition Animal Science and Zoology Cattle Rapeseed Oil medicine.symptom |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Animal, Vol 15, Iss 6, Pp 100217-(2021) |
| Popis: | Several nutritional strategies have been used in beef cattle production in order to increase animal performance and profitability. However, in the past two decades, the increase of consumer preference for functional foods has driven the investigation for improving food via adding functional substances to animal diets. We evaluated the effect of canola oil supplementation associated with vitamin E and selenium on performance, rumen metabolism, carcass traits, meat tenderness, and serum, liver, and meat status of antioxidants in finishing Nellore males. Animals were fed for 106 days in a feedlot and were randomly distributed in a 2 × 2 factorial arrangement: two levels of oil in the diet (no inclusion and 3% canola oil, defined as diet without oil inclusion (NO) and effect of oil (OIL), respectively) and two levels of antioxidants in the diet (no inclusion and 2.5 mg of Se/kg of DM + 500 UI of vitamin E/kg of DM, defined as diet without antioxidant inclusion (NA) and effect of the antioxidants (ANT), respectively). DM intake (kg/day) was evaluated daily; performance and serum were analysed at the beginning of the feedlot and every 28 days. Animals were slaughtered and hot carcass weight (kg) was recorded; ruminal fluid and liver samples were collected. At 24 h postmortem, carcass pH was recorded and the Longissimus thoracis was sampled. There was no significant effect of the OIL*ANT interaction (P > 0.05) for any trait evaluated. Bulls fed OIL presented greater final BW (P 0.05) ruminal parameters or the protozoa population. Our results showed that the inclusion of 3% canola oil in the diet DM increased performance, feed efficiency, carcass fat deposition, and tenderness, with no effect on rumen fermentation and protozoa population of Nellore cattle in a feedlot system. The inclusion of ANT in the cattle diet did not affect performance or rumen parameters. However, the levels of ANT were increased in the serum, liver, and meat, enriching the final product with these compounds. |
| Databáze: | OpenAIRE |
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