Responses to condensed tannins of flowering sulla (Hedysarum coronarium L.) grazed by dairy sheep

Cabiddu, A.; Molle, G.; Decandia, M.; Spada, Simona; Fiori, Myriam; Piredda, Giovanni; Addis, Margherita

doi:10.1016/j.livsci.2008.11.019

Cited by 84 publications

(88 citation statements)

References 48 publications

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“…This is in agreement with a recent report on muscle FA profile in lambs fed sainfoin silage (Girard et al, 2016). Previous studies in small ruminants receiving dietary tannins from sulla (Hedysarium coronarium) or birdsfoot trefoil (Lotus corniculatus) have also shown similar changes in milk and meat composition (e.g., Priolo et al, 2005;Cabiddu et al, 2009;Girard et al, 2016). In our work, the impared ruminal BH observed in the sainfoin cultures was more evident on the major PUFA constituent of the sunflower oil, 18:2n-6, whereas numerical differences in 18:3n-3 were not statistically significant and contrasting results were detected for trans-11 cis-15 18:2 (a major metabolite of 18:3n-3 BH; Jenkins et al, 2008) after 6 and 24 h of incubation.…”

Section: Ruminal Biohydrogenationsupporting

confidence: 92%

“…In any case, responses at both time points may be attributed to the effect of sainfoin on ruminal lipid metabolism, given that the inhibition of trans C18 saturation would accumulate vaccenic acid and trans-11 cis-15 18:2, but a negative influence on the first BH steps would decrease their production. This latter response, linked to a lower or slower disappearance of dietary PUFA, appears to better reflect the in vivo effects reported for other tannin-rich legumes, such as the lower milk proportion of trans-11 18:1 and cis-9 trans-11 CLA together with increases in 18:3n-3 and 18:2n-6 in ewes fed sulla (Addis et al, 2005;Cabiddu et al, 2009). In line with this, Turner et al (2005) pointed toward a general inhibition of BH, and not only on the last step, when examining the effects of Lotus corniculatus in- Sainfoin, fatty acid biohydrogenation and ruminal fermentation tation and compromise its practical application in ruminant feeding.…”

Section: Ruminal Biohydrogenationmentioning

confidence: 67%

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Effects of a tannin-rich legume (Onobrychis viciifolia) on in vitro ruminal biohydrogenation and fermentation

Toral

Hervás

Missaoui

et al. 2016

Span. j. agric. res.

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There is still controversy surrounding the ability of tannins to modulate the ruminal biohydrogenation (BH) of fatty acids (FA) and improve the lipid profile of milk or meat without conferring a negative response in the digestive utilization of the diet. Based on this, an in vitro trial using batch cultures of rumen microorganisms was performed to compare the effects of two legume hays with similar chemical composition but different tannin content, alfalfa and sainfoin (Onobrychis viciifolia), on the BH of dietary unsaturated FA and on the ruminal fermentation. The first incubation substrate, alfalfa, was practically free of tannins, while the second, sainfoin, contained 3.5% (expressed as tannic acid equivalents). Both hays were enriched with sunflower oil as a source of unsaturated FA. Most results of the lipid composition analysis (e.g., greater concentrations of 18:2n-6, cis-9 18:1 or total polyunsaturated FA in sainfoin incubations) showed the ability of this tannin-containing legume to inhibit the BH process. However, no significant differences were detected in the accumulation of cis-9 trans-11 conjugated linoleic acid, and variations in trans-11 18:1 and trans-11 cis-15 18:2 did not follow a regular pattern. Regarding the rumen fermentation, gas production, ammonia concentration and volatile FA production were lower in the incubations with sainfoin (‒17, ‒23 and ‒11%, respectively). Thus, although this legume was able to modify the ruminal BH, which might result in improvements in the meat or milk lipid profile, the present results were not as promising as expected or as obtained before with other nutritional strategies.

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Section: Ruminal Biohydrogenationsupporting

confidence: 92%

Section: Ruminal Biohydrogenationmentioning

confidence: 67%

Effects of a tannin-rich legume (Onobrychis viciifolia) on in vitro ruminal biohydrogenation and fermentation

Toral

Hervás

Missaoui

et al. 2016

Span. j. agric. res.

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“…These results do not appear to be supported by the LA and ALA intake due to grazing sulla, which were comparable with those with ryegrass, but can be explained by the intake of sulla CT that would have been able to inhibit the activity of ruminal microorganisms in biohydrogenating PUFA, as demonstrated by Cabiddu et al (2009), and then favour PUFA transfer in milk and cheese.…”

Section: Discussionmentioning

confidence: 68%

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Bonanno

Grigoli

Mazza

et al. 2016

animal

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Sulla (Sulla coronarium L.) forage is valued for its positive impact on ruminant production, in part due to its moderate content of condensed tannin (CT). The duration of daily grazing is a factor affecting the feed intake and milk production of ewes. In this study, the effects of grazing sulla pasture compared with annual ryegrass, and the extension of grazing from 8 to 22 h/day, were evaluated with regard to ewe forage intake and milk production, as well as the physicochemical properties and fatty acid (FA) composition of cheese. During 42 days in the spring, 28 ewes of the Comisana breed were divided into four groups (S8, S22, R8 and R22) that grazed sulla (S) or ryegrass (R) for 8 (0800 to 1600 h) or 22 h/day, and received no feeding supplement. In six cheese-making sessions, cheeses were manufactured from the 48 h bulk milk of each group. Compared with ewes grazing ryegrass, those grazing sulla had higher dry matter (DM) intake, intake rate and milk yield, and produced milk that was lower in fat and higher in casein. Ewes grazing for 22 h spent more time eating, which reduced the intake rate, increased DM and nutrient intake and milk yield, and reduced milk fat. Due to the ability of CT to inhibit the complete ruminal biohydrogenation of polyunsaturated fatty acids (PUFA), the FA composition of sulla cheese was more beneficial for consumer health compared with ryegrass cheese, having lower levels of saturated fatty acids and higher levels of PUFA and n-3 FA. The FA profile of S8 cheese was better than that of S22 cheese, as it was higher in branched-chain FA, monounsaturated FA, PUFA, rumenic acid (c9,t11-C18:2), and had a greater health-promoting index. The effect of short grazing time on sulla was attributed to major inhibition of PUFA biohydrogenating ruminal bacteria, presumably stimulated by the higher accumulation of sulla CT in the rumen, which is related to a higher intake rate over a shorter eating time. Thus, grazing sulla improved the performance of ewes, thereby increasing, especially with short grazing time, the nutritional properties of cheese fat.

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“…Dschaak et al (2011) also reported no changes in the milk yield and composition of lactating dairy cows due to diet supplementation with 30 g/kg DM of quebracho tannins extract. Indeed, supplemental PEG did not affect milk yield and composition as reported by Cabiddu et al (2009). However, Woodward et al (2000) reported a higher (P B0.01) milk yield in dairy cows fed lotus compared to lotus ' PEG, indicating that condensed tannins could have contributed to the increased milk yield.…”

Section: Discussionmentioning

confidence: 74%

Effects of pistachio by-products in replacement of alfalfa hay on ruminal fermentation, blood metabolites, and milk fatty acid composition in Saanen dairy goats fed a diet containing fish oil

Ghaffari

Tahmasbi

Khorvash

et al. 2013

Journal of Applied Animal Research

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(2014) Effects of pistachio by-products in replacement of alfalfa hay on ruminal fermentation, blood metabolites, and milk fatty acid composition in Saanen dairy goats fed a diet containing fish oil, Journal of Applied Animal Research, 42:2,[186][187][188][189][190][191][192][193] The objective of this study was to investigate the effects of pistachio by-products (PBP) in replacement of alfalfa hay (AH) on ruminal fermentation, blood metabolites, and milk fatty acid composition in Saanen dairy goats fed a diet containing fish oil. For this purpose, 15 multiparous lactating Saanen goats (on day 25 postpartum, 38.159 1.2 kg) were randomly assigned to three treatment diets in a completely randomized design with five goats per treatment. The treatment consisted of feeding the following diets: (1) control (AH), (2) 30% PBP, and (3) 30% PBP 'polyethylene glycol (PEG, 1 g/Kg of dry matter [DM]). The experiment lasted 21 days, including 16 days of adaptation to the experimental diets followed by a five-day sampling period for determining milk yield and composition, dry matter intake (DMI), and blood metabolites. The results showed that DMI was affected (PB 0.05) by using PBP in the diets. The goats fed PBP had a lower (PB0.05) DMI than those in other treatments. No differences were observed in milk yield and composition among the dietary treatments. The goats fed PBP (with and without PEG) had higher (P B0.05) amounts of C16:0 and trans-C18:1 isomer in their milk fat than those fed AH. C24:0 was detected at higher (P B0.05) concentrations in goats fed AH than those in other treatments. Overall, different treatments had no significant effects on the concentrations of saturated, monounsaturated, and polyunsaturated fatty acids (PUFA) in milk fat. Trans fatty acids (TFA) in milk fat exhibited higher (PB0.05) concentrations in PBP and PBP-PEG treatments than in AH. However, no differences were detected in the concentrations of short, medium, and long chain fatty acids among the treatments. No differences were observed in rumen pH among the treatments, while rumen ammonia-N concentrations were lower (P B0.01) in goats fed PBP than those in the other treatments. Treatments showed no differences with regard to blood metabolites (i.e., cholesterol, triglyceride, blood urea nitrogen, total protein, albumin, and glucose). These findings indicate that the inclusion of PBP in replacement of AH in the diet of dairy Saanen goats have no adverse effects on ruminal fermentation and blood metabolites. Moreover, PBP is capable of modifying the fatty acid profile of milk in dairy goat.

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Responses to condensed tannins of flowering sulla (Hedysarum coronarium L.) grazed by dairy sheep

Cited by 84 publications

References 48 publications

Effects of a tannin-rich legume (Onobrychis viciifolia) on in vitro ruminal biohydrogenation and fermentation

Effects of a tannin-rich legume (Onobrychis viciifolia) on in vitro ruminal biohydrogenation and fermentation

Effects of ewes grazing sulla or ryegrass pasture for different daily durations on forage intake, milk production and fatty acid composition of cheese

Effects of pistachio by-products in replacement of alfalfa hay on ruminal fermentation, blood metabolites, and milk fatty acid composition in Saanen dairy goats fed a diet containing fish oil

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