Effects of camelina meal supplementation on ruminal forage degradability, performance, and physiological responses of beef cattle

Journal of Animal Science
B I CappellozzaJ A Carroll

Abstract

Three experiments compared ruminal, physiological, and performance responses of beef steers consuming hay ad libitum and receiving grain-based supplements without (control) or with (CAM) the inclusion of camelina meal. In Exp. 1, 9 steers fitted with ruminal cannulas received CAM (2.04 kg of DM/d; n = 5) or control (2.20 kg of DM/d; n = 4). Steers receiving CAM had reduced (P = 0.01) total DMI and tended to have reduced (P = 0.10) forage DMI compared with control. No treatment effects were detected (P ≥ 0.35) for ruminal hay degradability parameters. In Exp. 2, 14 steers fed CAM (1.52 kg of DM/d; n = 7) or control (1.65 kg of DM/d; n = 7) were assigned to a corticotropin-releasing hormone (CRH; 0.1 μg/kg of BW) and a thyrotropin-releasing hormone (TRH; 0.33 μg/kg of BW) challenge. Steers fed CAM had greater (P < 0.05) serum concentrations of PUFA compared with control before challenges. Upon CRH infusion, plasma haptoglobin concentrations tended (P = 0.10) to be reduced and ceruloplasmin concentrations increased at a lesser rate in CAM steers compared with control (treatment × time; P < 0.01). Upon TRH infusion, no treatment effects were detected (P ≥ 0.55) for serum thyrotropin-stimulating hormone, triiodothyronine, and thyrox...Continue Reading

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Citations

Oct 10, 2013·Journal of the Science of Food and Agriculture·Stefania ColombiniRemo Reggiani
Jul 18, 2015·Journal of Applied Microbiology·H BozkurtP M Davidson
May 30, 2016·Journal of Dairy Science·R D LawrenceJ A Clapper
Sep 25, 2019·Animals : an Open Access Journal From MDPI·Eduardo Marostegan PaulaAntonio Pinheiro Faciola

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