Effects of condensed tannins in fresh sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Theodoridou, Katerina; Aufrere, Jocelyne; Andueza, Donato; Pourrat, Juliane; Morvan, Aline Le; Stringano, Elisabetta; Mueller-Harvey, Irene; Baumont, René

doi:10.1016/j.anifeedsci.2010.06.007

Cited by 90 publications

(105 citation statements)

References 57 publications

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“…In our study, CT activity, at both phenological stages, was smaller in sainfoin silages compared with the results obtained by Theodoridou et al (2010) on the corresponding sainfoin fresh forages. Moreover, at the same phenological stage (end of flowering) total CT concentration (extractable and non-extractable) in sainfoin silages was lower than the Table 4 Mean concentration of tN (mg/g), NH 3 -N (mg/g) and VFA (mmol/l) in the rumen fluid of sheep fed silage at the end and early flowering with (1) or without (2) the addition of PEG in the rumen tN 5 total nitrogen; NH 3 -N 5 ammonia nitrogen; VFA 5volatile fatty acids; PEG 5 polyethylene glycol; T 5 treatment; Phs 5 phenological stage; T 3 Phs 5 interaction between T and Phs.…”

Section: Discussioncontrasting

confidence: 83%

“…Mean values were calculated from the measurements before the morning meal (T0) and 1.5, 3 and 6 h after the meal. corresponding fresh forage as found previously by Theodoridou et al (2010). Our last mentioned result contrasts the results obtained by Minnee et al (2002) on Lotus corniculatus and Hedysarum coronarium and by Scharenberg et al (2007) on sainfoin, who reported that total CT concentration is not affected by ensiling.…”

Section: Discussionsupporting

confidence: 57%

“…In vivo digestibility and N balance The in vivo digestibility coefficients of sainfoin silages (0.541 and 0.624 at the end of flowering and early flowering, respectively) were smaller compared with the results on corresponding fresh forages (0.607 and 0.654) observed by Theodoridou et al (2010). Demarquilly et al (1998) stated that conservation as wrapped silage reduces digestibility because of forage wilt.…”

Section: Discussionmentioning

confidence: 88%

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Effects of condensed tannins in wrapped silage bales of sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Theodoridou

Aufrere

Andueza

et al. 2012

Animal

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The objective of this study was to characterize the condensed tannins (CTs) in wrapped silage bales of sainfoin (Onobrychis viciifolia) and examine their potential action on in vivo and in situ digestive characteristics in sheep. Silage was made from sainfoin, cut at two phenological stages. The first phenological stage, at which silage was made, was from the first vegetation cycle at the end of flowering and the second stage silage was made from regrowth, 5 weeks after the first cut, but before flowering. The silages made from the two phenological stages were fed to 12 rumen-fistulated sheep in a crossover design. Of the 12 sheep, six received polyethylene glycol (PEG) to bind with and remove the effects of CT, whereas the other six were dosed with water. Organic matter digestibility, total-tract N digestibility and N (N) balance were measured over 6 days. Kinetic studies were performed on total N, ammonia N (NH 3 -N) and volatile fatty acids (VFAs) in rumen fluid before and 1.5, 3 and 6 h after feeding. The kinetics of degradation of dry matter and N from Dacron bags suspended in the rumen were also determined. Biological activity of CT (protein-binding capacity) and CT concentration were greater for the silage made from sainfoin at the early flowering stage. Total-tract N digestibility was increased by the addition of PEG (P , 0.001) to the sainfoin silage before flowering (P , 0.001). CTs decreased N excretion in urine (P , 0.05) and increased faecal N excretion (P , 0.001), but had no effect on body N retention, which is beneficial for the animal. Ruminal N degradability was smaller in the presence of active CT ( P , 0.001) at both phenological stages; however, soluble N (P 5 0.2060) and NH 3 -N (P 5 0.5225) concentrations in rumen fluid remained unchanged. The results of this experiment indicate that CT in the sainfoin retain their ability to affect the nutritive value of preserved forage legumes.Keywords: feed value, in vivo measurements, tannins, polyethylene glycol, sainfoin silage ImplicationsSilage allows the use of good-quality forage throughout the year. Although numerous papers have focused on the effect of condensed tannins (CTs) on the nutritive value of fresh forages, only few reports give data on preserved tanniniferous forages. The potential of tannins in legumes has not been fully exploited in temperate regions where livestock production occurs, largely because the CT-containing fodder legumes have poorer agronomic characteristics than tannin-free legumes. This study assessed the nutritive value of sainfoinwrapped silage bales. The effect of CT on in vivo and on in situ rumen degradability of sainfoin, which had been ensiled at two stages of maturity, was investigated in sheep. In order to investigate the effects of CT, measurements were recorded with and without polyethylene glycol, which inactivates CT throughout the digestive tract.

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Section: Discussioncontrasting

confidence: 83%

Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 88%

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Effects of condensed tannins in wrapped silage bales of sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Theodoridou

Aufrere

Andueza

et al. 2012

Animal

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“…Current study data revealed that the higher fecal N excretion in the presence of active tannins was matched by lower urinary N excretion. This shift can be explained by the lower rumen degradability of nitrogenous compounds and is confirmed by effects of CT on rumen fluid ammonia and total N as previously stated [26,27]. Volatile fatty acids production was not affected by acacia leaves replacement.…”

Section: Discussion Feed Intake and Digestionsupporting

confidence: 57%

Productive and Reproductive Traits of Sheep Fed Acacia saligna Leaves-Based Diets

El-Gendy¹,

Anwar²,

Fahmy,³

et al. 2017

IJEAB

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“…However, Jayanegara et al (2015) observed decreases in in vivo organic matter (OM) digestibility when CT from different sources and with different chemical structures were added to the substrate. Theodoridou et al (2010) observed depressed ruminal protein digestibility and a shift from urinary N excretion to fecal N excretion while maintaining body-N retention in sheep fed O. viciifolia containing CT at concentrations of 2.5-3.4% DM. In vivo or in situ studies such as this one mentioned above provide insight into and a greater understanding of the complexity of the relationship between CT and animal nutrition.…”

Section: The Anti-nutritional Effect Of Condensed Tanninsmentioning

confidence: 97%

The role of condensed tannins in ruminant animal production: advances, limitations and future directions

et al. 2017

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-Tannins represent one of the most abundant polyphenolic compounds in plants. Tannins exist as a multitude of chemically unique entities in nature. The most commonly occurring tannins are typically divided into two major classes based on chemical structure: hydrolysable (HT) or condensed tannins (CT). Hydrolysable tannins are esters of gallic or ellagic acid linked to a polyol core, typically glucose. Condensed tannins or proanthocyanidins consist of flavan-3-ol subunits linked together to form oligomers and polymers. Both HT and CT are defined as astringent, medium-to-high-molecular weight polyphenolic compounds that characteristically bind and precipitate soluble proteins. The objective of this paper was to present recent advances in CT-ruminant interactions, the limitations associated with understanding and using CT in ruminant animal production, and future needs for research to further advance our knowledge of the role of CT in optimization of ruminant animal production. Condensed tannins pose some anti-nutritional problems to ruminants due to their astringent property that reduces feed intake and, consequently, animal performance. Ruminants can, however, tolerate CT by slowly adapting the ruminal microbes to the toxic effects of CT and by releasing CT-binding salivary proteins. The protein-binding ability of CT has some benefits to the ruminant due to complexes formed with essential amino acids, preventing their degradation in the rumen, but releasing them in the lower gut for absorption by the animal. Recent data have suggested increased N retention when CT is given to growing animals. There are potential benefits of using CT and HT for anthelmintic purposes due to their ability to inhibit egg hatching and larval motility of gastrointestinal nematode parasites, especially in small ruminants. Condensed tannins also bind to minerals (Al, Ca, Co, Cu, Fe, Mg, Mn, P, and Zn). Although studies with ruminants have been contradictory, it has been reported that because the CT-metal ion complex is stable over a wide pH range, CT may reduce the bioavailability of minerals. Methane mitigation by feeding CT might be the most impactful benefit for ruminant production. Many empirical equations have been developed to predict ruminal methane emissions, but very few have included CT. Future research should focus on the improvement of methodology to assess CT biological activity, interaction with other plant-specialized metabolites, and associated physiological and nutritional impacts on ruminants.

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Effects of condensed tannins in fresh sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Cited by 90 publications

References 57 publications

Effects of condensed tannins in wrapped silage bales of sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Effects of condensed tannins in wrapped silage bales of sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Productive and Reproductive Traits of Sheep Fed Acacia saligna Leaves-Based Diets

The role of condensed tannins in ruminant animal production: advances, limitations and future directions

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