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Benefits using sweet chestnut tannin in dairy cow nutrition University of Ljubljana Dep. Animal Science Slovenia International Dairy Workshop & Exhibition,

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Presentation on theme: "Benefits using sweet chestnut tannin in dairy cow nutrition University of Ljubljana Dep. Animal Science Slovenia International Dairy Workshop & Exhibition,"— Presentation transcript:

1 Benefits using sweet chestnut tannin in dairy cow nutrition University of Ljubljana Dep. Animal Science Slovenia International Dairy Workshop & Exhibition, Izmir, Turkey, April th, 2008

2 In abomasum and small intestine: 1. Disintegration of insoluble complexes between proteins and tannins 2. Release of proteins and gallic acid In reticulo-rumen: 1. Formation of insoluble complexes between proteins and tannins 2. Partial inactivation of microorganisms 3. Partial inactivation of enzymes

3 Tannin-protein complexes (effect of pH) Jones and Mangan, 1977

4 Effect of tannins on the production of ammonia and degradability of dry substance in vitro Effect of tannins on the production of ammonia and degradability of dry substance in vitro (regression coefficients of equation a + bx) Chestnut extract Ammonia a 65,25 b-5,14 IVDMDeg a70,59 b-3,17 IVDMDig a88,53 b-0,46 Gonzalez in sod., 2002

5 Effect of chestnut tannins on in vitro gas production and methanogenesis from starch Chestnut extract (mg/ml) Total potential gas production (ml)528 a 505 b 511 b 508 b Maximum fermentation rate (ml/h)50.6 a 42.1 b 58.0 a 43.8 b Time of maximum fermentation rate (h)8.9 a 13.8 b 8.9 a 10.0 ab Methane (ml/g DM)18.9 a 18.7 a 16.6 b 13.5 c Metan(vol %)4.8 a 4.7 b 4.5 c 4.2 d Sivka and Lavrenčič, 2007

6 Effective degradability of N (r = 0,05) of ground (G) and pelleted (P) soybean meal crude protein treated with chestnut tannins Lavrenčič et al., 2001

7 Evolution of in vitro ammonia concentration (mmol/l) Sliwinski et al., 2001

8 Daily evolution of pH value: feeding at 8:00 AM Northwest Engineering

9 Effect of chestnut tannins on milk yield (Errante et al., 1998) T max = 28°C T min = 17,5°C

10 Effect of chestnut tannins on milk protein contents (Orešnik, 1996)

11 Effect of chestnut tannins on milk production and composition ControlChestnutControlChestnuttannin Milk production (kg) Protein content (%) Urea content (mg/l) Lavrenčič and Suhoveršnik, 2006

12 Effect of FARMATAN on early weaned calves Number of animals: 62 early weaned Brown-swiss bulls (31 in control and 31 in trial group) Duration of trial: 3 months Farmantan*: 5 kg/t compound feed (prestarter, starter) * Farmatan with 55% of active substance Source: M. Štruklec, A. Orešnik, Biotechnical Faculty, Ljubljana, Slovenia, 1997

13 Nitrogen fractions (%) in grass silages prepared with chestnut tannins Lavrenčič and Levart, 2006 a a ab b a b cc a b cc

14 Contents of volatile fatty acids (g/kg DM) in grass silages prepared with different amounts of chestnut extract Chestnut tannin (g/kg fresh grass) Lactic acid101,1 a 95,8 a 80,6 b 80,9 b Acetic acid17,915,811,616,8 Propionic acid0,090,080,090,08 Butyric acid1,311,210,160,09 pH3,85 ab 3,78 b 3,84 ab 3,92 a Lavrenčič and Levart, 2006

15 Important advantages in ruminants nutrition chestnut tannins: - improve milk persistence (increase milk yield) - increase milk protein yield - lower the milk urea concentration - improve silage fermentation process and increase protein utilization from silage - lower the incidence of gastrointestinal and digestive disorders

16 RUMINANTSDosages Dairy cows 2 – 5 kg/ton of compound feed 5 – 10 g/day per animal – starch containing diets 5 – 20 g/day per animal – maize silage containing diets 10 – 20 g/day per animal – soluble protein containing diets 20 – 40 g/day per animal – in stress conditions Fattening 15 – 30 g/day per animal 0,3 % of protein content in supplemental compound feeds Small ruminants (sheep, goat) 3 – 5 kg/ton of compound feed 1,5 – 10 g/day per animal Calves (rearing, white meat production) 1 – 3 kg/ton of compound feed 3 – 5 g/day per animal RECOMMENDATIONS FOR THE USE OF FARMATAN IN RUMINANT NUTRITION


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