Dose–response effects of chitosans on in vitro rumen digestion and fermentation of mixtures differing in forage-to-concentrate ratios

Goiri, Idoia; Oregui, L. M.; García-Rodriguez, A.

doi:10.1016/j.anifeedsci.2009.01.016

Cited by 42 publications

(50 citation statements)

References 18 publications

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“…The nutritive value of the experimental substrates varied depending on the F:C ratio, as shown for the levels of CP (87-190 g/kg) and NDF (385-702 g/kg) (Table 1). However, methane production was not clearly affected by the F:C ratio alone, which is in agreement with that reported by Goiri et al (2009). for fattening or dairying).…”

Section: Discussionsupporting

confidence: 92%

Effect of ginkgo extract supplementation on in vitro rumen fermentation and bacterial profiles under different dietary conditions

Koike

Kobayashi

2017

Animal Science Journal

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Ginkgo extract was applied to a batch culture study and evaluated for its potential as a feed additive for ruminant animals under different forage-to-concentrate (F:C) ratios (1:9, 3:7, 5:5, 7:3 and 9:1). Rumen fluid was mixed with respective diet and incubated at 39°C for 24 h with and without ginkgo extract (1.6% fruit equivalent in culture). Methane production was significantly decreased by ginkgo extract, with the greatest reductions found in the 5:5 (41.9%) followed by the 7:3 ratios (36.7%). Total short chain fatty acid and ammonia levels were not affected by ginkgo extract supplementation in any of the five different diets. However, ginkgo extract increased propionate proportion and decreased acetate proportion in all dietary conditions tested. The levels of total bacteria, Ruminococcus flavefaciens, Ruminococcus albus and Fibrobacter succinogenes were decreased by ginkgo extract. The levels of Selenomonas ruminantium, Anaerovibrio lipolytica, Ruminobacter amylophilus, Succinivibrio dextrinosolvens and Megasphaera elsdenii were increased by ginkgo extract supplementation, possibly contributing to the higher propionate production. These results suggest that rumen modulation by ginkgo extract can be achieved at a wide range of F:C ratios with no adverse impact on feed digestion. Moreover, F:C ratios of 5:5 and 7:3 may be optimal when methane mitigation is expected.

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Section: Discussionsupporting

confidence: 92%

Effect of ginkgo extract supplementation on in vitro rumen fermentation and bacterial profiles under different dietary conditions

Koike

Kobayashi

2017

Animal Science Journal

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“…Our results show that chitosan had a tendency to decrease IVDMD; however, this was significantly decreased only in the high forage diet. A reduction of in vitro digestibility for maize silage diet and a different forage-concentrate diet with chitosan (325, 750, and 1500 mg/L of culture fluid) has also been observed previously (3)(4)(5). A slight decrease in the digestibility in sheep given chitosan (136 mg/kg of BW) daily via rumen fistula has also been reported (6).…”

Section: Discussionmentioning

confidence: 72%

“…Although the negative effects of chitosan on the rumen ciliate protozoa population could be useful, such effects on rumen bacteria, with the consequent decrease in dry matter digestibility, would be harmful. The use of chitosan in ruminant diets influences rumen fermentation processes both in vitro and in vivo (3)(4)(5)(6), and it can also inhibit in vitro rumen biohydrogenation when fat sources are included (7). Rumen ciliate protozoa play an important role in increasing the concentration of conjugated linoleic acid (cis9, trans11C 18:2 ; c9, t11-CLA) and trans-vaccenic acid (trans11C 18:1 ; TVA) in the rumen fluid (8,9), and their alteration by chitosan or by a combination of both additives (i.e.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effects of chitosan, plant oils, and different diets on rumen metabolism and protozoan population in sheep

Wencelová¹,

Váradyová²,

Mihaliková³

et al. 2014

Turk J Vet Anim Sci

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An efficient ecofriendly method for the alkylation reaction of various imines is described by a simple one-pot reaction of aldehydes, amines and alkyl iodides in the presence of AgI nanoparticles in aqueous media. Silver iodide nanoparticles mediated an enhanced rate and facility of reaction and showed high influence in the green synthesis of some amine derivatives. Moreover, this nanoparticle increased the yields of products and decreased the reaction times in all cases. The heterogeneous mediator was fully characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and FT-IR experimental techniques.

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“…Lower C2:C3 ratio has already been reported in response to chitosan (Goiri et al, 2009a(Goiri et al, ,b, 2010. This increase in propionate (7%) and reduction in acetate (2%) proportion can be associated with changes in the carbohydrate digestion without altering DMI when chitosan was added in the rumen.…”

Section: Discussionmentioning

confidence: 82%

“…On the other hand, when added to the diet of sheep, chitosan increased propionate proportion without affecting OM digestibility (Goiri et al, 2010). Thus, chitosan might alter ruminal fermentation for more energetically efficient patterns and may provide an alternative to antimicrobial growth promoters (Goiri et al, 2009a(Goiri et al, ,b, 2010; nevertheless, more in vivo studies are necessary to identify the effect of chitosan on ruminal fermentation. Therefore, this study was aimed to evaluate the effects of chitosan on dry matter intake (DMI), nutrient digestibility, ruminal fermentation and blood metabolites in Nellore steers.…”

Section: Introductionmentioning

confidence: 96%

Chitosan affects total nutrient digestion and ruminal fermentation in Nellore steers

Araújo

Venturelli

Santos

et al. 2015

Animal Feed Science and Technology

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a b s t r a c tThis study aimed to investigate the effects of chitosan on dry matter intake (DMI), nutrient digestibility, ruminal fermentation, and blood metabolites in Nellore steers. Eight ruminally cannulated Nellore steers (540 ± 28.5 kg of BW) were used in a replicated 4 × 4 Latin square design, with 21-d of experimental periods. The animals were randomly assigned to the following treatments: control (without chitosan addition; Q0), Q50, Q100 and Q150, by dosing 50, 100 and 150 mg/kg BW chitosan, respectively, through the cannula. Although there was no difference on DMI, chitosan addition increased dry matter, neutral detergent fiber, and crude protein apparent total-tract digestibility (P < 0.05). Ruminal pH was not affected, whereas NH 3 N concentration was quadratically affected with chitosan addition (P = 0.01). There were no differences in total volatile fatty acids concentration among treatments. Chitosan had a quadratic effect on propionate and butyrate, whereas acetate molar proportions decreased linearly (P < 0.05). Acetate:propionate ratio decreased with chitosan addition (P < 0.05). Plasma glucose concentration was higher with chitosan addition (P < 0.05); however, total protein, urea, aspartate aminotransferase, and gamma-glutamyl transferase were not affected by chitosan. Addition of chitosan altered ruminal fermentation, improved nutrient digestibility, and did not appear to damage animal health.

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Dose–response effects of chitosans on in vitro rumen digestion and fermentation of mixtures differing in forage-to-concentrate ratios

Cited by 42 publications

References 18 publications

Effect of ginkgo extract supplementation on in vitro rumen fermentation and bacterial profiles under different dietary conditions

Effect of ginkgo extract supplementation on in vitro rumen fermentation and bacterial profiles under different dietary conditions

Evaluating the effects of chitosan, plant oils, and different diets on rumen metabolism and protozoan population in sheep

Chitosan affects total nutrient digestion and ruminal fermentation in Nellore steers

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