Investigation of sainfoin (Onobrychis viciifolia) cultivar differences on nitrogen balance and fecal egg count in artificially infected lambs

Journal of Animal Science
B N AzuhnwiF Dohme-Meier

Abstract

Research in ruminant nutrition and helminth control with forages, which contain condensed tannins (CT), suggests that varying responses may depend not only on CT concentration but also on CT composition. An experiment was designed to test this by feeding 2 dried sainfoin cultivars (Visnovsky and Perly), which differed in CT properties, to lambs that were artificially infected with the abomasal blood-sucking nematode Haemonchus contortus. Twenty-four infected lambs received 1 of these 2 cultivars; the feeds were either untreated or treated with the CT-binding polyethylene glycol over 4 wk (n = 6). The 2 cultivars were also fed to 2 × 6 uninfected lambs. Nutrient digestibility, N balance, ADG, plasma urea, together with indicators of infection [fecal egg count (FEC), abomasal worm count, per capita female fecundity, erythrocytic indices, and serum protein], were determined. The specific effects of sainfoin cultivar, CT, and infection were evaluated by contrast analysis. Digestibility of both NDF and ADF were less (P < 0.001) with Perly compared with Visnovsky. The apparent nutrient digestibility was reduced (P < 0.001) by CT. However, no clear cultivar effects were evident on N excretion and retention. Condensed tannins reduced (...Continue Reading

References

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Mar 2, 2013·Journal of the Science of Food and Agriculture·Blasius N AzuhnwiIrene Mueller-Harvey

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Citations

Jun 11, 2015·Journal of the Science of Food and Agriculture·Marion GirardGiuseppe Bee
Dec 27, 2018·Journal of Animal Physiology and Animal Nutrition·Anuraga JayanegaraMichael Kreuzer
Jun 1, 2014·Grass and Forage Science : the Journal of the British Grassland Society·A LüscherJ L Peyraud
Oct 23, 2020·Veterinary Parasitology·Karalyn J LonngrenKatherine H Petersson

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