Inclusion of Yerba Mate ( Ilex paraguariensis ) Extract in the Diet of Growing Lambs: Effects on Blood Parameters, Animal Performance, and Carcass Traits.

Autor: Lobo RR; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil.; Department of Animal Sciences, University of Florida, Gainesville, FL 32608, USA., Vincenzi R; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Rojas-Moreno DA; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Lobo AAG; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Silva CMD; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Benetel-Junior V; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Ghussn LR; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Mufalo VC; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Berndt A; Embrapa Southeast Livestock, Brazilian Agricultural Research Corporation, São Carlos, SP 13560-970, Brazil., Gallo SB; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Pinheiro RSB; College of Engineering, São Paulo State University, Ilha Solteira, SP 15385-000, Brazil., Bueno ICDS; College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Faciola AP; Department of Animal Sciences, University of Florida, Gainesville, FL 32608, USA.
Jazyk: angličtina
Zdroj: Animals : an open access journal from MDPI [Animals (Basel)] 2020 Jun 01; Vol. 10 (6). Date of Electronic Publication: 2020 Jun 01.
DOI: 10.3390/ani10060961
Abstrakt: This study aimed to evaluate levels of yerba mate ( Ilex paraguariensis ) extract (YME), as a feed additive in the diets of growing lambs on serum biochemical parameters and hematological indices, animal performance, body metrics and carcass traits. Thirty-six entire (nine per treatment), male growing lambs, weighing 23.8 ± 3.7 kg, were fed the experimental diets which were treatments consisting of increasing levels of YME (0, 1, 2, and 4% inclusion on a dry matter [DM] basis) during an experimental period of 53 days. The experiment was carried out in a randomized block design, which initial body weight was used as blocking factor and the results were analyzed by orthogonal contrasts (linear, quadratic, and cubic). Yerba mate extract did not change the general health status of the animals; however, inclusions of up to 2% of the extract increased globulins ( p = 0.05) and white blood cell count, as segmented neutrophils ( p = 0.02) and lymphocytes ( p = 0.04). Additionally, inclusion of up to 2% YME increased dry matter intake, final weight gain, total and daily gain ( p < 0.05), also tended to increase ribeye area and reduce fat thickness ( p < 0.10); however, YME above 2% of inclusion reduced animal productive parameters ( p < 0.05). In conclusion, levels up to 2% of YME were beneficial to the health and productive parameters of growing lambs.
Competing Interests: The authors declare no conflict of interest.
Databáze: MEDLINE
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