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Naturally Contaminated Corn And Corn Gluten Meal On Piglets And Detoxication Effects Of Yeast Cell Wall

Posted on:2016-04-03Degree:MasterType:Thesis
Country:ChinaCandidate:N LiuFull Text:PDF
GTID:2283330461954382Subject:Animal Nutrition and Feed Science
Abstract/Summary:PDF Full Text Request
The experiment was to study the toxicity of feeding naturally contaminated diet on piglets and to test the efficiency of yeast cell wall(YCW) in counrering adverse effects of mycotoxins. The experiment contains two parts.Toxicity of naturally contaminated diet on piglets: An experiment was conducted to investigate the effects of naturally contaminated corn and corn gluten meal on performance, apparent digestibility and serum enzymes of piglets. A total of 15 piglets(initial weight of 9.59 ± 0.79 kg) aged 28 days were fed three treatment diets. Diets included control diet, 50% M diet(ZEA, 888.4 μg/kg), 100% M diet(ZEA, 1685.6 μg/kg).①With the increase of naturally contaminated diet, daily gain(ADG) and feed intake(ADFI) of piglets were decreased linearly or quadraticly(P<0.05).②With the increase of naturally contaminated diet, the apparent digestibility of total energy(GE), organic matter(OM), dry matter(DM), crude protein(CP) and ether extract(EE) were decreased linearly or quadraticly(P<0.05).③With the increase of naturally contaminated diet, the serum concentration of aspartate aminotransferase(AST) and creatine kinase(CK) were decreased linearly or quadraticly(P<0.05), the serum concentration of alanine aminotransferase(ALT) was increased linearly or quadraticly(P<0.05), however, the serum concentrations of ALT was decreased first and then increased linearly or quadraticly(P<0.05).The efficiency of yeast cell wall(YCW) in counrering adverse effects of mycotoxins: To test the efficacy of YCW in preventing the toxicity of naturally contaminated diet on performance, organ development, nutrient digestibility, serum biochemical and digestive enzyme activities of piglets. Total of 40 piglets(initial weight of 8.32 ± 0.49 kg) were fed four treatment diets. Diets included control diet, 50% M diet(ZEA, 849.4 μg/kg), 0.1% YCW diet(ZEA, 823.0 μg/kg) and 0.25% YCW diet(ZEA, 884.0 μg/kg; 0.10% or 0.25% YCW was suppllmented to the 50% M diet). Zearalenone-contaminated diet was harm to organ development and significantly decreased(P<0.05) relative weight of liver, and disrupted the normal metabolism of serum and significantly decreased(P<0.05) serum albumin concentrations on 30 d, and reduced the immunity of body and significantly decreased(P<0.05) swine fever antibody titers and increased serum immunoglobulin concentrations expect the IgM concentrations on 30 d, and hindered nutrient digestion and decreased(P<0.05) the apparent digestibility of DM, CP, EE, GE and biological value of protein(CPBV), and reduced(P<0.05) activities of amylase(AMS), lipase(LPS) and trypsase(TRS) in jejunum or duodenum. Addition of YCW to diet was effective(P<0.05) in counteracting the toxic effects of zearalenone-contaminated diet,increasing ADG,apparent digestibility of nutrient and activities of digestive enzymes,improving serum immunoglobulin concentrations on 15 d,strengthening swine fever antibody titers, protected organ development. Addition of 0.25%YCW to diet was more effective in counteracting the toxic effects of zearalenone-contaminated diet than 0.10%YCW addition(P>0.05).Naturally contaminated diet has a detrimental effect on performance, interfers with the normal organ function, disrupts metabolism and suppresses the immune performance, reduces activities of digestive enzymes and reduces nutrient utilization of piglets. Addition of YCW to diet was effective in counteracting the toxic effects of naturally contaminated diet to some extent.
Keywords/Search Tags:Piglets, Zearalenone, Deoxynivalenol, Fumonisin, Toxicity, Yeast cell wall
PDF Full Text Request
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