Articles | Volume 68, issue 1
https://doi.org/10.5194/aab-68-77-2025
https://doi.org/10.5194/aab-68-77-2025
Original study
 | 
06 Feb 2025
Original study |  | 06 Feb 2025

Soybean oil, a linoleic acid source, in lamb diets: metabolic, feeding behavior, and ruminal parameters

Victor Guimarães Oliveira Lima, Liliane Oliveira da Silva, José Esler de Freitas Jr., Henry Daniel Ruiz Alba, Vagner Maximino Leite, Willian Pereira Silva, Douglas dos Santos Pina, Laudí Cunha Leite, Carlindo Santos Rodrigues, Stefanie Alvarenga Santos, and Gleidson Giordano Pinto de Carvalho

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Cited articles

Alba, H. D. R., De Freitas Júnior, J. E., Leite, L. C., Azevêdo, J. A. G., Santos, S. A., Pina, D. S., Cirne, L. G. A., Rodrigues, C. S., Silva, W. P., Lima, V. G. O., Tosto, M. S. L., and De Carvalho, G. G. P.: Protected or unprotected fat addition for feedlot sheep: feeding behavior, carcass traits, and meat quality, Animals, 11, 328, https://doi.org/10.3390/ani11020328, 2021. 
Allen, M., Bradforrd, B., and Oba, M. B.: Review: the hepatic oxidation theory of the control of feed intake and its application to ruminants, J. Anim. Sci., 87, 3317–3334, https://doi.org/10.2527/jas.2009-1779, 2009. 
Allen, M. S.: Drives and limits to feed intake in ruminants, Anim. Prod. Sci., 54, 1513–1524, https://doi.org/10.1071/AN14478, 2014. 
Allen, M. S.: Control of feed intake by hepatic oxidation in ruminant animals: integration of homeostasis and homeorhesis, Animal, 14, s55–s64, https://doi.org/10.1017/S1751731119003215, 2020. 
Andreazzi, A. S. R., Pereira, M. N., Reis, R. B., Pereira, R. A. N., Morais Júnior, N. N., Acedo, T. S., Hermes, R. G., and Cortinhas, C. S.: Effect of exogenous amylase on lactation performance of dairy cows fed a high-starch diet, J. Dairy Sci., 101, 7199–7207, https://doi.org/10.3168/jds.2017-14331, 2018. 
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Short summary
Soybean oil (SO) is used in animal feed due to the metabolic energy that it provides. Our study on metabolic and ingestive behavior, as well as rumen parameters, revealed that its inclusion in lamb diets reduced dry matter (DM), carbohydrate, and nitrogen intake. However, rumen parameters, such as total volatile fatty acids and methane production, were unaffected. We conclude that SO can be included at up to 30 g kg-1 DM as an energy source in diets for feedlot sheep containing 60 % concentrate.
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