Effects of lasalocid or monensin on in situ biohydrogenation of flaxseed and sunflower seed unsaturated fatty acids

Martineau, R.; Petit, H.V.; Benchaar, C.; Lapierre, H.; Ouellet, D.R.; Pellerin, D.; Berthiaume, R.

doi:10.4141/cjas07147

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…In in vivo studies of cows eating a diet supplemented with the ionophore monensin, the resultant milk fatty acid composition suggested a depressed ruminal BH: SFA including C16:0 decreased, and MUFA (specially the 18:1 trans isomers), PUFA, and CLA increased (Sauer et al, 1998;Odongo et al, 2007). Martineau et al (2008) observed a decrease in the rate of BH of C18:3 from linseed when the diet was supplemented with monensin. Because the antimicrobial activity of hops is similar to that of monensin, we expected to observe an inhibition of fatty acids BH resulting in higher UFA levels in milk; however, hops alone at the tested dose (2.9 g of HP/kg of DM) had no significant effect on the fatty acid profile of milk (experiment 1).…”

Section: Milk Fatty Acid Compositionmentioning

confidence: 99%

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Focant

Froidmont

Archambeau

et al. 2019

Journal of Dairy Science

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The objective of this study was to test the effects of inclusion of hop pellets (HP) and oak tannin extracts (OT) alone or in combination on N efficiency, methane (CH 4 ) emission, and milk production and composition in 2 experiments with dairy cows fed low-N rations supplemented with linseed. In both experiments, 6 lactating Holstein cows were assigned to 3 dietary treatments in a 3 × 3 duplicated Latin square design (21-d periods). Cows were fed a total mixed ration at a restricted level to meet their nutrient requirements. In experiment 1, 169 g dry matter (DM) of OT or 56 g DM of HP was included separately in the control diet (C1). In experiment 2, the additives were included together (OT-HP) in the control diet (C2) similar to C1. Diet C2 was compared with a control without linseed (C0). In experiment 1, the supplementation of the control diet with OT decreased urinary N excretion by 12%. In experiment 2, the combination of OT and HP decreased urinary N by 7%. Oak tannin extracts and HP alone or in combination did not influence the daily enteric CH 4 production of cows. Cows fed diet C0 produced 17% more enteric CH 4 daily than those fed diet C2. Intake of diet C2, which contained 6.7% extruded linseed on a DM basis (experiment 2), decreased the sum of 6:0 to 14:0 fatty acids (−16%) and palmitic acid (−26%) and increased the stearic acid (+50%), oleic acid (+36%), vaccenic acid (trans-11 18:1; +285%), rumenic acid (cis-9,trans-11 18:2; +235%), and α-linolenic acid (+100%) in milk fat. The supplementation of diet C2 with the OT-HP mixture further improved the milk's fatty acid composition. Intake of the OT alone increased α-linolenic acid by 17.7% (experiment 1). The results of this study show that at the economically acceptable dose we tested, hops had no effect on urinary N excretion, CH 4 emission, milk production, and milk composition. By contrast, supplementation of diets with oak tannin extract can be considered for reducing urinary N excretion. The combination of oak tannin and hops had no more effect than oak tannin alone except on the milk fatty acid profile, which was favorably influenced from a nutritional point of view.

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Section: Milk Fatty Acid Compositionmentioning

confidence: 99%

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Focant

Froidmont

Archambeau

et al. 2019

Journal of Dairy Science

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“…There are several activities of essential oils (Jayasena & Jo, 2013) as feed additives for livestock because they improve feed efficiency and animal productivity due to their antimicrobial, anti-inflammatory, antioxidant, and digestive modulatory effects on ruminal metabolism (Bakkali, Averbeck, Averbeck, & Idaomar, 2008;Benchaar et al, 2008). Their antimicrobial activity can decrease ruminal biohydrogenation and consequently increase the deposition of PUFA in meat (Martineau et al, 2008;Scollan et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of essential oils on meat and fat qualities of crossbred young bulls finished in feedlots

et al. 2016

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Twenty-seven animals (½ Angus - ½ Nellore) were fed for four months with one of the following diets: without addition of essential oils (E0.0), with 3.5 (E3.5) or 7 (E7.0) g/animal/day of an essential oil blend (oregano, garlic, lemon, rosemary, thyme, eucalyptus and sweet orange). Chemical composition, fatty acid profile and meat color were evaluated in Longissimus muscle. In addition, the effects of aging (one, seven and 14days) on the meat water holding capacity, texture and lipid oxidation were evaluated. Essential oils had no effect on chemical and fatty acid composition, meat color, water holding capacity or texture, but an inclusion of 3.5g/day decreased lipid oxidation. The addition of 7.0g/animal/day had a pro-oxidant effect on meat during aging and resulted in higher values for lipid oxidation at 14days of aging. Aging significantly affected thawing losses and texture. A dose of 3.5g/animal/day could be recommended in feedlot animals, but greater doses could have a pro-oxidant effect.

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Tenderness Intrinsic Character

Holloway

2019

Red Meat Science and Production

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Effects of lasalocid or monensin on in situ biohydrogenation of flaxseed and sunflower seed unsaturated fatty acids

Cited by 5 publications

References 14 publications

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Effect of essential oils on meat and fat qualities of crossbred young bulls finished in feedlots

Tenderness Intrinsic Character

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