Effect of oils rich in linoleic acid on &lt;i&gt;in vitro&lt;/i&gt; rumen fermentation parameters of sheep, goats and dairy cows

Szumacher-Strabel, M.; Cieślak, Adam; Nowakowska, Anna

doi:10.22358/jafs/66419/2009

Cited by 35 publications

(35 citation statements)

References 21 publications

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“…In carried study, dietary supplementation with this oil did not negatively influence the analysed populations of Entodiniomorpha and Holotricha. With these results we confirmed observations of earlier studies demonstrating none or partial effect of dietary supplementation with C18 rich oils on protozoa population in the rumen ecosystem (Cieślak et al, 2006a;Szumacher-Strabel et al, 2009). Kišidayová et al (2006a) pointed that the rumen protozoa may respond in different ways to oil supplementation in in vitro conditions.…”

Section: Discussionsupporting

confidence: 91%

The potential of the wild dog rose (Rosa canina) to mitigate in vitro rumen methane production

Szumacher-Strabel¹,

Zmora²,

Rój³

et al. 2011

J. Anim. Feed Sci.

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This study examined the potential of liquid wild dog rose (Rosa canina) seeds oil and solid seeds residue obtained after CO 2 extraction in supercritical conditions to mitigate rumen methane production in vitro. Two experiments were carried out. The substrate comprised of a mixture of meadow hay and barley meal (60:40) for the control diets (CON1 in experiment with oil and CON2 in experiment with residue). The control diets were supplemented up to 5% in dry matter of rose seeds oil (RO) and 5% of rose seeds residue (RR). The following parameters were measured: pH, ammonia, volatile fatty acids, ciliate protozoa and bacteria count, methane concentration and methanogens population. In the RO treatment a decrease in methane production and an increase in the Archea population were observed. In the RR treatment no change in methane production was reported, whereas some variations in protozoal populations were detected in relation to CON2. The potential to mitigate methane production was reported only in wild dog rose seeds oil treatment. Besides, no negative effect of wild dog rose seeds residue on rumen processes was stated, what may predispose this protein and fibre containing by-product to be utilized as ruminants dietary ingredient. 286 ROSA CANINA MITIGATE METHANE PRODUCTION IN RUMEN

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Section: Discussionsupporting

confidence: 91%

The potential of the wild dog rose (Rosa canina) to mitigate in vitro rumen methane production

Szumacher-Strabel¹,

Zmora²,

Rój³

et al. 2011

J. Anim. Feed Sci.

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“…Probably, linolenic acid stabilizes better the acidity in the rumen than oleic acid. Szumacher-Strabel et al (2009) documented an increase in pH in the rumen fluid of goats fed evening primrose oil (containing 84.6% of polyunsaturated fatty acids and 7.4% of monounsaturated fatty acids) when compared to animals receiving borage oil (containing 48.4% of polyunsaturated fatty acids and 27% of monounsaturated fatty acids). It cannot be ruled out that the increase in rumen pH before feeding linseed oil could have decreased the concentration of lactic acid.…”

Section: Discussionmentioning

confidence: 99%

Supplementation of rapeseed and linseed oils to sheep rations: effects on ruminal fermentation characteristics and protozoal populations

Majewska¹,

Miltko²,

Bełżecki³

et al. 2017

Czech J. Anim. Sci.

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Majewska M.P., Miltko R., Bełżecki G., Skomiał J., Kowalik B. (2017): Supplementation of rapeseed and linseed oils to sheep rations: effects on ruminal fermentation characteristics and protozoal populations. Czech J. Anim. Sci., 62, 527−538.The study was performed on six sheep fitted with a cannula in the rumen and re-entrant cannula in the duodenum; divided into three groups, two sheep in each. The animals were fed meadow hay and the concentrate alone or the same diet supplemented with rapeseed or linseed oils at a dose of 5% of the basal diet. Ruminal degradation of protein and acid detergent fibre were lower when sheep were fed rapeseed compared to linseed oil (P < 0.05). The addition of oils to diets caused increased ruminal degradation of fat (P < 0.01). The density of protozoa in the rumen at 2 or 4 h after feeding was lower than before feeding in each experimental group. The inclusion of rapeseed oil in the diet decreased the total number of ciliates and Entodinium spp. compared with control and animals fed linseed oil (P < 0.01). Before feeding, the concentration of Diplodinium and Ophryoscolex spp. were lower in sheep fed rapeseed oil compared to control (P < 0.05), and the number of Dasytricha species decreased 2 h after feeding linseed oil compared to animals fed rapeseed oil (P < 0.05). Each of the oil supplements decreased the bacterial mass in the rumen compared with control (P < 0.01). The addition of rapeseed oil to the diet decreased total volatile fatty acid and acetate concentrations in the rumen in comparison to control and sheep receiving linseed oil (P < 0.01). In both diets, the estimated emission of methane and carbon dioxide (P < 0.01) increased 2 and 4 h after feeding compared to that at 0 h. The oleic acid more strongly reduced protozoa and digestive processes in the rumen than linolenic acid. Nevertheless, the quantity of oils added was still too low to induce detectable changes in methane formation in the rumen.

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“…Previous research demonstrated that quantitative as well as qualitative variability of microorganisms (including methanogens) in the rumen depends on many factors, such as: animal species, geographical location, feed and also on the use of feed additives that affect rumen fermentation (Szumacher-Strabel et al, 2009;Hook et al, 2010;Huang et al, 2012;Popova et al, 2012;Kumar et al, 2013).…”

Section: Characteristics Of the Rumen Ecosystem In Relation To Methanmentioning

confidence: 99%

Plant components with specific activities against rumen methanogens

Cieślak

Szumacher-Strabel

Stochmal

et al. 2013

Animal

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102

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A wide range of plant bioactive components (phytochemicals) have been identified as having potential to modulate the processes of fermentation in the rumen. The use of plants or plant extracts as natural feed additives has become a subject of interest not only among nutritionists but also other scientists. Although a large number of phytochemicals (e.g. saponins, tannins and essential oils) have recently been investigated for their methane reduction potential, there have not yet been major breakthroughs that could be applied in practice. A key tenet of this paper is the need for studies on the influence of plant components on methane production to be performed with standardized samples. Where there are consistent effects, the literature suggests that saponins mitigate methanogenesis mainly by reducing the number of protozoa, condensed tannins both by reducing the number of protozoa and by a direct toxic effect on methanogens, whereas essential oils act mostly by a direct toxic effect on methanogens. However, because the rumen is a complex ecosystem, analysis of the influence of plant components on the populations of methanogens should take into account not only the total population of methanogens but also individual orders or species. Although a number of plants and plant extracts have shown potential in studies in vitro, these effects must be confirmed in vivo.Keywords: ruminants, methane, tannins, saponins, essential oils ImplicationsThis review demonstrates that plant phytochemicals can have important effects on rumen methanogens, either by affecting methanogens directly and/or indirectly by affecting rumen protozoa. Modulation of the rumen microbiota, including methanogens and protozoa, with plant extracts such as saponins, tannins and essential oils has implications in improvement of animal nutrition through decreased dietary energy loss, and in limitation of the negative impact on the environment through mitigation of methane production.

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Effect of oils rich in linoleic acid on <i>in vitro</i> rumen fermentation parameters of sheep, goats and dairy cows

Cited by 35 publications

References 21 publications

The potential of the wild dog rose (<i>Rosa canina</i>) to mitigate <i>in vitro</i> rumen methane production

The potential of the wild dog rose (<i>Rosa canina</i>) to mitigate <i>in vitro</i> rumen methane production

Supplementation of rapeseed and linseed oils to sheep rations: effects on ruminal fermentation characteristics and protozoal populations

Plant components with specific activities against rumen methanogens

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