Effect of condensed tannins in birdsfoot trefoil<i>(Lotus corniculatus)</i>and sulla (<i>Hedysarum coronarium)</i>on body weight, carcass fat depth, and wool growth of lambs in New Zealand

Douglas, G. B.; Stienezen, M.W.J.; Waghorn, G. C.; Foote, A. G.; Purchas, R. W.

doi:10.1080/00288233.1999.9513353

Cited by 47 publications

(43 citation statements)

References 17 publications

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“…The CT concentration in offered sulla was 16.7 g/kg of DM and no CT were detected in ryegrass forage. The whole-plant CT content of sulla was comparable to that recorded in Sicily by Priolo et al (2005) (17.8 g/kg of DM), but lower than values found in Sardinia (from 24 to 36 g/kg of DM; Molle et al, 2009), and in New Zealand, which ranged from 35 (Niezen et al, 2002) to 72 g/kg of DM (Douglas et al, 1999). The CT content in sulla is affected by several factors such as environment, genotype, physiological stage and their interaction (Amato et al, 2005).…”

Section: Resultsmentioning

confidence: 69%

Effects of feeding green forage of sulla (Hedysarum coronarium L.) on lamb growth and carcass and meat quality

Bonanno

Miceli

Grigoli

et al. 2011

Animal

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The nutritional effects of sulla (Hedysarum coronarium L.) forage containing condensed tannins (CT) on growth of lambs, and carcass and meat quality were investigated. Thirty-two male Comisana lambs aged 100 6 8 days weighing 19.0 6 2.8 kg were fed fresh forage of sulla or CT-free annual ryegrass ( Lolium multiflorum Lam. subsp. Wersterwoldicum) for 49 days until slaughter; in addition, each lamb was supplied with 200 g/days of concentrate. Eight lambs per diet had been previously treated with anthelmintic drugs to remove nematode parasites. Measurements of BW and feed intake, and counts of faecal nematode eggs were made. Carcass parameters were recorded after slaughter, and tissue components of the hind leg were determined. Longissimus dorsi meat was evaluated for pH, colour, thawing and cooking losses, Warner-Bratzler shear force, chemical composition and sensory properties based on triangle tests. Relative to ryegrass-fed lambs, sulla-fed lambs had significantly greater dry matter (DM) and protein intake, a more favourable feed conversion ratio, and superior growth rate, final BW at 150 days of age, carcass weight, yield and fatness. These results were attributed to the high protein and non-structural carbohydrate content of sulla, and also to the moderate CT content of sulla (16.7 and 20.3 g/kg of DM in offered and consumed sulla forage, respectively). Anthelmintic treatment did not affect lamb growth, as the level of parasitic infection (initial and final) was low. The physical, chemical and sensory properties of the lamb meat were not influenced by diet.

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Section: Resultsmentioning

confidence: 69%

Effects of feeding green forage of sulla (Hedysarum coronarium L.) on lamb growth and carcass and meat quality

Bonanno

Miceli

Grigoli

et al. 2011

Animal

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“…The cause of the small reductions in milk production during the production (grazing) study is not easily explained, other than to assume the astringency of the CT was sufficient to slow the rate or extent of rumen degradation, as reported in sheep (Waghorn et al 1994b). The data from sheep show that effects of mildly excess CT can be tolerated for short periods (weeks), but are manifested with prolonged feeding (Waghorn et al 1994b;Douglas et al 1999). Prolonged feeding of CT can slow digestion rates, increase rumen digesta mass (Waghorn et al 1994b) and reduce productivity (Douglas et al 1999).…”

Section: Milk Productionmentioning

confidence: 85%

“…The data from sheep show that effects of mildly excess CT can be tolerated for short periods (weeks), but are manifested with prolonged feeding (Waghorn et al 1994b;Douglas et al 1999). Prolonged feeding of CT can slow digestion rates, increase rumen digesta mass (Waghorn et al 1994b) and reduce productivity (Douglas et al 1999). Feeding CT for 5 wk during the production study may have exacerbated the negative effects observed during the metabolism study.…”

Section: Milk Productionmentioning

confidence: 99%

Potential use of Acacia mearnsii condensed tannins to reduce methane emissions and nitrogen excretion from grazing dairy cows

Grainger¹,

Clarke²,

Auldist³

et al. 2009

Can. J. Anim. Sci.

241

187

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. 2009. Potential use of Acacia mearnsii condensed tannins to reduce methane emissions and nitrogen excretion from grazing dairy cows. Can. J. Anim. Sci. 89: 241Á251. We measured the effect of condensed tannins (CT) extracted from the bark of the Black Wattle tree (Acacia mearnsii) on the milk production, methane emissions, nitrogen (N) balance and energy partitioning of lactating dairy cattle. Sixty lactating cows, approximately 32 d in milk grazing ryegrass pasture supplemented with 5 kg d(1 cracked triticale grain, were allocated to three treatments: Control, Tannin 1 (163 g CT d( 1 ) or Tannin 2 (326 g CT d(1 initially, reduced to 244 g d (1 CT by day 17). Cows were dosed twice daily after milking for 5 wk with the powdered CT extract (mixed 1:1 with water). Low and high CT supplementation reduced (PB0.05) methane emissions by 14 and 29%, respectively (about 10 and 22% on an estimated dry matter intake basis). However, milk production was also reduced by the CT (P B0.05), especially at the high dose rate. Milk yields were 33.0, 31.8 and 29.8 kg cow(1 d (1 . Tannin 2 also caused a 19% decline in fat yield and a 7% decline in protein yield, but protein and lactose contents of milk were not affected by CT supplementation. After the initial 5-wk period, five cows representative of each treatment group were moved to metabolism facilities to determine effects of CT on energy digestion and N balance over 6 d. The energy digestibility was reduced (P B0.05) from 76.9 (Control) to 70.9 (Tannin 1) and 66.0% (Tannin 2) and the percentage of feed N lost to urine was reduced (PB0.05) from 39 to 26% and 22% for the respective treatments. The CT also caused a reduction (PB0.05) in intake during the metabolism study, effectively increasing CT as a percentage of intake. Although CT can be used to reduce methane and urinary N losses from cows fed pastures with a high crude protein (CP) concentration, reduced milk yield in this study suggested the dietary concentration was too high. If CT are to be considered as a means for lowering methane emissions further research is needed to define impacts of lower doses of A. mearnsii CT on methane production and cow productivity. Dairy producers will be reluctant to adopt feeding practices that compromise profitability.

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“…Furthermore, the protein-protective effects of moderate levels of PAs in forages improve nitrogen nutrition, reduce urinary nitrogen excretion, and help counter intestinal parasites. Along with bloat protection, these traits have been major targets for genetic breeding of forage crops (6)(7)(8).…”

mentioning

confidence: 99%

A transcript profiling approach reveals an epicatechin-specific glucosyltransferase expressed in the seed coat of Medicago truncatula

Pang

Peel

Sharma

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

175

208

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Expression of the Arabidopsis TRANSPARENT TESTA 2 (TT2) MYB family transcription factor leads to massive accumulation of proanthocyanidins (PAs) in hairy roots of Medicago truncatula. Microarray analysis showed that TT2 induces genes for flavonoid/PA biosynthesis, transcription factors, and a large number of genes of unknown function. A second microarray dataset identified genes that were preferentially expressed in the M. truncatula seed coat. Comparison of the two datasets defines target genes for steps that are yet unidentified in PA biosynthesis and accumulation. Of these genes, a glycosyltransferase, UGT72L1, was active specifically toward the PA precursor (؊)؊epicatechin, and its expression pattern in developing seeds correlated with the presence of epicatechin glucoside and accumulation of PAs. UGT72L1 may be involved in the production of epicatechin 3 -O-glucoside in the seed coat as a key step in PA biosynthesis or its regulation.glucosyltransferase ͉ model legume ͉ proanthocyanidin

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Effect of condensed tannins in birdsfoot trefoil(Lotus corniculatus)and sulla (Hedysarum coronarium)on body weight, carcass fat depth, and wool growth of lambs in New Zealand

Cited by 47 publications

References 17 publications

Effects of feeding green forage of sulla (Hedysarum coronarium L.) on lamb growth and carcass and meat quality

Effects of feeding green forage of sulla (Hedysarum coronarium L.) on lamb growth and carcass and meat quality

Potential use of Acacia mearnsii condensed tannins to reduce methane emissions and nitrogen excretion from grazing dairy cows

A transcript profiling approach reveals an epicatechin-specific glucosyltransferase expressed in the seed coat of Medicago truncatula

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