Use of a glucomannan polymer to reduce the effects of mycotoxin-contaminated diets in finishing pigs
Academic Article
Publication Date:
2007
Short description:
Use of a glucomannan polymer to reduce the effects of mycotoxin-contaminated diets in finishing pigs / Pulina, Giuseppe; Nicolussi, Paola; Ligios, Ciriaco; Battacone, Gianni; Carboni, G. A.. - 6:Suppl. 1(2007), pp. 673-675.
abstract:
The use of feed additives with mycotoxin adsorption capacity is a common strategy for controlling
negative effects of mycotoxins in swine production systems. However, adsorbents that may results very effective
under experimental conditions, i.e. when feed contamination level is rather high, do not necessarily retain their
efficacy when tested under field conditions feed with generally low mycotoxin contamination. In this study, the
effects of diets artificially contaminated with aflatoxin B1 or ochratoxin A on fattening performance and serum
chemistry of fattening pigs are investigated. Moreover, the ability of a commercial glucomannan polymer (Gm
polimer) to reduce or eliminate the effects of the contaminated feeds is tested. Thirty heavy pigs (BW = 110±10.6
kg) were fed 6 diets (n = 5 pigs/diet) for 4 weeks until slaughtering. Diets were: control without toxin added (C);
added with 0.02 ppm of aflatoxin B1 (AFB1); added with 0.05 ppm of ochratoxin A (OTA); other three diets as the
previous but the addition of 2.0 g/kg of Gm polymer (C-GM, AFB1-GM, OTA-GM). Daily weight gain (ADG) and
Feed efficiency ratio (FE) were measured every two weeks. Data were analyzed with a two-way ANOVA that included
the fixed effect of diet, time and their interaction. After the first 2 weeks the ADG did not differ significantly
between the diets, even if the ADG of AFB1 diet was about 20% lower than AFB1-Gm or C. In the last 2 weeks the
ADG of AFB1 diet was significantly lover than the other diets (P<0.01) and was about one-half of the values reported
for the same group in the first period. The contamination with ochratoxin A did not affect fattening performance
of pigs during the whole experimental period. No damages were found in kidneys of all diets. Moreover, no evidence
of association between observed liver damages and different diets was found. Finally, no differences between experimental
diets were evidenced for the haematological parameters.
negative effects of mycotoxins in swine production systems. However, adsorbents that may results very effective
under experimental conditions, i.e. when feed contamination level is rather high, do not necessarily retain their
efficacy when tested under field conditions feed with generally low mycotoxin contamination. In this study, the
effects of diets artificially contaminated with aflatoxin B1 or ochratoxin A on fattening performance and serum
chemistry of fattening pigs are investigated. Moreover, the ability of a commercial glucomannan polymer (Gm
polimer) to reduce or eliminate the effects of the contaminated feeds is tested. Thirty heavy pigs (BW = 110±10.6
kg) were fed 6 diets (n = 5 pigs/diet) for 4 weeks until slaughtering. Diets were: control without toxin added (C);
added with 0.02 ppm of aflatoxin B1 (AFB1); added with 0.05 ppm of ochratoxin A (OTA); other three diets as the
previous but the addition of 2.0 g/kg of Gm polymer (C-GM, AFB1-GM, OTA-GM). Daily weight gain (ADG) and
Feed efficiency ratio (FE) were measured every two weeks. Data were analyzed with a two-way ANOVA that included
the fixed effect of diet, time and their interaction. After the first 2 weeks the ADG did not differ significantly
between the diets, even if the ADG of AFB1 diet was about 20% lower than AFB1-Gm or C. In the last 2 weeks the
ADG of AFB1 diet was significantly lover than the other diets (P<0.01) and was about one-half of the values reported
for the same group in the first period. The contamination with ochratoxin A did not affect fattening performance
of pigs during the whole experimental period. No damages were found in kidneys of all diets. Moreover, no evidence
of association between observed liver damages and different diets was found. Finally, no differences between experimental
diets were evidenced for the haematological parameters.
Iris type:
1.1 Articolo in rivista
Keywords:
Pig; aflatoxin b1; ochratoxin a; glucomannan polymer; Sardinia
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