Effects of Montmorillonite Nanocomposite on Mercury Residues in Growing/Finishing Pigs

Lin, Xianglin; Xu, Zhaoyi; Zou, Xiaoting; Wang, Rui; Yan, Xiang-Hua; Jiang, Junfang

doi:10.5713/ajas.2004.1434

Cited by 7 publications

(7 citation statements)

References 18 publications

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“…Multiple studies have confirmed the decontaminating properties of clay minerals. They can bind: -aflatoxins (Phillips et al, 1987(Phillips et al, , 1988Lindemann et al, 1993;Schell et al, 1993a,b;Phillips et al, 2002;Abdel-Wahhab et al, 2002;Huebner and Phillips, 2003;Rizzi et al, 2003;Shi et al, 2005Shi et al, , 2007Maciel et al, 2007;Magnoli et al, 2008;Nguyen et al, 2008), -plant metabolites (Dominy et al, 2004), -heavy metals (Hassen et al, 2003;Katsumata et al, 2003;Lin et al, 2004;Xu et al, 2004;Yu et al, 2005Yu et al, , 2008Abbes et al, 2007), -toxins (Knezevich andTadic, 1994).…”

Section: Adsorption Capacity and Effects Of Clay Mineralsmentioning

confidence: 99%

“…Xia et al (2004) reported that Cu 2+ -enriched MMT significantly decreased the frequency of diarrhoea by up to 72 per cent and significantly increased the villus height and the villus height to crypt depth ratio in the jejunal mucosa by 19 and 37 per cent, respectively. Specific physical and chemical modifications -nanocomposites (Lin et al, 2004;Xu et al, 2004;Shi et al, 2005Shi et al, , 2007Yu et al, 2008), and complexes with organic materials (Xu et al, 1997;Herrera et al, 2000Herrera et al, , 2004Koh and Dixon, 2001), are characterized by much higher adsorptive abilities than other regular clay minerals. The effect of clay minerals can also be reinforced by the addition of other components such as charcoal or antioxidants (Bonna et al, 1991).…”

Section: Modified Forms Of Clay Mineralsmentioning

confidence: 99%

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Alternatives to antibiotic growth promoters in prevention of diarrhoea in weaned piglets: a review

Vondruskova¹,

Slamova²,

Trčková³

et al. 2010

Vet. Med.

161

155

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ABSTRACT:The weaning time is a crucial period in the management of piglets. The risk of development of post-weaning diarrhoea (PWD) in piglets is high. PWD is the cause of serious economic losses in pig herds. Since 2006, the use of antibiotic growth promoters for prevention of diarrhoeal diseases in piglets has been banned. This measure also led to the investigation of alternative suitable feed supplements that would be reasonably efficient in protecting and sustaining animal health and performance. Various natural materials such as probiotics, prebiotics, organic acids, zinc and plant extracts have been tested as effective alternatives to antibiotics. Recently, owing to their high adsorption capacity, research efforts have been conducted on the application of natural clays and clay-based feed supplements. The purpose of this review is to summarize the effect of different alternative components as growth promoters on the health and performance of weaned and growing piglets.Keywords: infection; swine; antibiotics; intestinal microflora; performance; probiotics; prebiotics, organic acids; zinc; phytobiotics; aluminosilicate List of abbreviations CFU = colony-forming unit; ETEC = enterotoxigenic Escherichia coli; MMT = montmorillonite; PWD = post weaning diarrhoea; SCFA = short chain fatty acids; VFA = volatile fatty acids Review ArticleVeterinarni Medicina, 55, 2010 (5): 199-224 200 ruses (Moller et al., 1998;Song et al., 2006), transmissive gastroenteritis virus (Hampson et al., 1987; Alexa et al., 1995 Alexa et al., , 2001 Chae et al., 2000;Madec et al., 2000;Melin et al., 2004;Song et al., 2006;Thomsson et al., 2008) and others have been most frequently diagnosed.Early-weaned piglets are exposed to several stress factors, with nutrition, etiology and indoor environment of housing being particularly implicated (Madec et al., 2000;Laine et al., 2008). Noninfectious stress factors which are involved in the development of gastroenteric disorders are: -age of piglets when they are weaned from their dam (Svensmark et al., 1989;Skirrow et al., 1997), -sudden change of feed from sow milk that provides piglets with immunoglobulins (Bailey et al., 1992), -irregular feed intake (Bark et al., 1986;Spencer and Howell, 1989;Svensmark et al., 1989;Madec et al., 1998;Laine et al., 2008), -feed structure (Amezcua et al., 2002), -animal hygiene and housing conditions (Le Dividich, 1981;Le Dividich and Herpin, 1994;Madec et al., 1998), -inadequate feeder space per piglet in the pen (Amezcua et al., 2002). Numerous changes in the early-weaned piglet body can initiate PWD, such as morphological (Hampson, 1986) and functional alterations of the small intestine (Kidder and Manners, 1980; Hampson and Kidder, 1986), changes in intestinal colonization with predominance of E. coli (Melin et al., 1997;Katouli et al., 1999) and weakening of the immune system (Blecha et al., 1983;Wattrang et al., 1998). Ban of antibiotic growth promotersRegarding the fact that weaning greatly affects general health condition of piglets, it is nece...

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Section: Adsorption Capacity and Effects Of Clay Mineralsmentioning

confidence: 99%

Section: Modified Forms Of Clay Mineralsmentioning

confidence: 99%

Alternatives to antibiotic growth promoters in prevention of diarrhoea in weaned piglets: a review

Vondruskova¹,

Slamova²,

Trčková³

et al. 2010

Vet. Med.

161

155

View full text Add to dashboard Cite

show abstract

“…Clays added to the diet can bind and immobilize toxic materials in the gastrointestinal tract of animals and reduce their toxicity. Several studies have confirmed the decontamination properties of clays against mycotoxins [ 11 – 17 ], heavy metals [ 18 – 24 ], and other toxins [ 25 ]. The adsorption capacity for any specific clay is determined by the fine structure of the clay particles, their surface properties and exchangeable ions [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Clays as dietary supplements for swine: A review

Subramaniam

Kim

2015

J Animal Sci Biotechnol

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Clays are crystalline, hydrated aluminosilicate molecules composed of alkali and alkaline earth cations along with small amounts of various other elements. The best-known are montmorillonite, smectite, illite, kaolinite, biotite and clinoptilolite. The molecules in these clays are arranged in three-dimensional structures creating internal voids and channels capable of trapping a wide variety of molecules. As a result of this structure, clay minerals are regarded as a simple and effective tool for the prevention of the negative effects of many toxic compounds. Dietary supplementation with clays has been shown to improve weight gain and feed conversion in pigs. Where improvements in performance have been noted, one of the most likely explanations for the improvement is the fact clays increase nutrient digestibility. Clays reduce the speed of passage of feed along the digestive tract which allows more time for digestion. Feeding clays also causes morphological changes in the intestinal mucosa such as an increase in villus height and an increase in the villus height to crypt depth ratio. These changes increase the surface area of the gastrointestinal tract thus increasing nutrient digestibility. Several studies have indicated that feeding clay reduces the incidence, severity and duration of diarrhea in pigs. The mechanism for the reduction in diarrhea is likely due to increases in the numbers of Bifidobacteria and Lactobacillus and decreases in Clostridia and E. coli in the small intestine of pigs fed clays. In addition, the numbers of pigs born alive and weaned, birth weight and weaning weight have been shown to be higher for sows fed clays. Several studies have indicated that clays can help mitigate the effects of mycotoxins. The aim of the present review is to focus on the various clays which have been given attention in recent research and to discuss their potential to improve pig performance.

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“…These results are consistent with those finding in rats [23,24]; it is shown that Cu-MMT supplemented in the Cdcontaminated diet could adsorb and remove Cd by urine or feces of the animals, then decrease Cd content in animal's body, and insure the safety of animal products. It is well known that Cu-MMT has large specific surface area, strong cation exchange capacity, and [12,25,26]; these biologically active characteristics might have adsorbed heavy metals and enhanced their excretion from the body resulting in lower heavy metals concentrations in tissues [27][28][29][30]. Consequently, it can be suggested that the ameliorative Cd toxicity potential of Cu-MMT was perhaps due to combined effects both on metal adsorption and on cation exchange, further lustrating Cd via urine and feces.…”

Section: Effects Of Cu-mmt On CD Contents In Selected Tissuesmentioning

confidence: 99%

Assessment of Cu (II)-Bearing Montmorillonite on Cd Adsorption

Song

Zhou

et al. 2009

Biol Trace Elem Res

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The abilities of montmorillonite (MMT) and Cu (II)-bearing montmorillonite (Cu-MMT) for adsorption of Cd from aqueous solutions have been studied at different optimized conditions of shaking time, pH value, and initial concentration, respectively. The results showed that the adsorbability of Cu-MMT onto Cd is stronger than the MMT. The amount of Cu-MMT necessary to remove Cd from solution was about 0.5 g for 100-200 mg/L Cd solution at a pH of 4.0. The maximum adsorption (94%) was 20 min of shaking time using Cu-MMT as adsorbent. The maximum adsorption of Cd=95% at a pH of 4.0. By increasing the initial concentration, the adsorption amount of Cd onto Cu-MMT increased. Animal experiment of this study indicated that the addition of Cu-MMT to the Cd-contaminated diet of pigs reduced significantly the Cd levels in tissues (p<0.05) and increased contents in feces (p<0.01), improving the safety of animal products. Thus, the overall results established the use of Cu-MMT as a heavy metal adsorbent in animal's diets, implying a potential protective role against heavy metal toxicities.

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Effects of Montmorillonite Nanocomposite on Mercury Residues in Growing/Finishing Pigs

Cited by 7 publications

References 18 publications

Alternatives to antibiotic growth promoters in prevention of diarrhoea in weaned piglets: a review

Alternatives to antibiotic growth promoters in prevention of diarrhoea in weaned piglets: a review

Clays as dietary supplements for swine: A review

Assessment of Cu (II)-Bearing Montmorillonite on Cd Adsorption

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