The effect of leonardite and lignite on the health of weaned piglets

Trčková, M.; Lorencova, Alena; Babák, Vladimír; Neča, Jiřı́; Cigánek, Miroslav

doi:10.1016/j.rvsc.2018.06.004

Cited by 16 publications

(41 citation statements)

References 44 publications

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“…In weaned piglets, leonardite improves animal performance and modulates lipid metabolism by increasing the level of HDL cholesterol in blood serum and suggesting an enhanced defence from stressors through a higher Mg serum level after 40 days of supplementation [27]. Leonardite seems to act by helping ion transport through membranes, protecting intestinal mucosa, enhancing enzymatic activities and promoting nutrient digestion and adsorption, particularly for proteins and minerals [28]. Some specific dietary short chain and medium chain fatty acids play a key role in the intestinal inflammation of pigs, as well as in modulating the intestinal microbial population and in promoting digestion [29].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Tannin Extracts, Leonardite and Tributyrin Supplementation on Diarrhoea Incidence and Gut Microbiota of Weaned Piglets

Dell’Anno

Reggi

Caprarulo

et al. 2021

Animals

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The effects of the dietary administration of a combination of Quebracho and Chestnut tannins, leonardite and tributyrin were evaluated in weaned piglets. A total of 168 weaned piglets (Landrace × Large White) were randomly allotted to two experimental groups (6 pens/group, 14 piglets/pen). Animals were fed a basal control diet (CTRL) and a treatment diet (MIX) supplemented with 0.75% tannin extracts, 0.25% leonardite and 0.20% tributyrin for 28 days. Individual body weight and feed intake were recorded weekly. Diarrhoea incidence was recorded by a faecal scoring scale (0–3; considering diarrhoea ≥ 2). At 0 and 28 days, faecal samples were obtained from four piglets/pen for microbiological and chemical analyses of faecal microbiota, which were then assessed by V3-V4 region amplification sequencing. At 28 days, blood from two piglets/pen was sampled to evaluate the serum metabolic profile. After 28 days, a reduction in diarrhoea incidence was observed in the MIX compared to CTRL group (p < 0.05). In addition, compared to CTRL, MIX showed a higher lactobacilli:coliform ratio and increased Prevotella and Fibrobacter genera presence (p < 0.01). The serum metabolic profile showed a decreased level of low-density lipoproteins in the treated group (p < 0.05). In conclusion, a combination of tannin extract, leonardite and tributyrin could decrease diarrhoea incidence and modulate the gut microbiota.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Tannin Extracts, Leonardite and Tributyrin Supplementation on Diarrhoea Incidence and Gut Microbiota of Weaned Piglets

Dell’Anno

Reggi

Caprarulo

et al. 2021

Animals

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“…We observed a tendency to increase the calcium content with age in young rabbits of the experimental and control groups. Several possible mechanisms of the effect of humic additive on calcium absorption have been described (Zralý et al, 2010;Trckova et al, 2018). Humic acid additives are known for their chelating properties, which are due to the presence of carboxyl and hydroxyl functional groups in them.…”

Section: Discussionmentioning

confidence: 99%

“…Humic acid additives are known for their chelating properties, which are due to the presence of carboxyl and hydroxyl functional groups in them. Chelating properties affect the bioavailability of macro-and micronutrients for the body (Trckova et al, 2018). In feed, calcium is mainly found in compounds with proteins and lipids.…”

Section: Discussionmentioning

confidence: 99%

“…The literature includes statements about ambiguity of the effect of humic additive on the calcium content in the blood. A number of researchers have noted an increase in serum calcium in piglets when humic additive is added to their main diet (Zralý et al, 2010;Trckova et al, 2018). But an increase in the blood calcium was not observed in the studies of humic additive in rabbits and birds (Stepchenko et al, 1991;Mista et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Humic acid additives are distinguished by their immunostimulating, anti-inflammatory, adaptogenic properties and the ability to correct metabolism (Stepchenko et al, 2008;Myhaylenko et al, 2016;Rybalka et al, 2016;Stepchenko et al, 2019). They can also affect the absorption and distribution of macro-and micronutrients, which was demonstrated by studies on many animal species (Skorik, 2008;Yefimov & Rakytianskyi, 2012;Stepchenko & Skorik, 2012;Trckova et al, 2018). Questions on the possibility of the influence of a humic acid additive on the distribution of macro-and microelements in the blood and bone tissue of rabbits are open.…”

Section: Introductionmentioning

confidence: 99%

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The impact of humic acid additives on mineral metabolism of rabbits in the postnatal period of ontogenesis

Hunchak

Martynyshyn

Gutyj

et al. 2020

Regul. Mech. Biosyst.

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Humic acids are characterized by chelating properties due to which they are able to influence the mineral metabolism in animals. Rabbits have species-specific characteristics of mineral metabolism, which distinguishes them from most species of mammals. For the experiment, 16 rabbits of 45-day-old of Hyplus breed were divided into the experimental and control group of 8 rabbits in each. The animals were 15 days in the preparatory period. The rabbits of the experimental group received humic acid additive individually with water in the amount of 5 mg/kg, the rabbits of the control group received pure water in the same amount. The ability of humic acid additive to increase the content of calcium, ionized calcium, iron, to correct the content of copper and zinc, and also to increase the activity of alkaline phosphatase in the blood serum of rabbits of the experimental group has been proved. We observed the early effect of the humic acid additive on increasing the content of iron and calcium ionized and a later effect on the activity of alkaline phosphatase and an increase in the content of copper in the blood serum. The influence of humic acid additive on the distribution of calcium, phosphorus, manganese, copper and zinc in bone tissue is determined. According to a histological study, there was a significant increase in the number of layers of osteons and osteoblasts in the bone tissue of the femur, an increase in the number of osteons and osteoblasts in the bone tissue of the sternum and an increase in the number of columns of chondrocytes and an increase in the number of chondrocytes in the column in the cartilaginous tissue of the sternum. The results of a histological study of bone tissue, together with an increase in structural macroelements in it and redistribution of osteotropic trace elements in the blood and bone tissue suggest the possibility of using a humic acid additive to intensify the growth and mineralization of bone tissue, which can improve the state of bone tissue of rabbits in the postnatal period ontogenesis.

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Evaluation of leonardite as a feed additive on lipid metabolism and growth of weaned piglets

Dell’Anno

Hejna

Sotira

et al. 2020

Animal Feed Science and Technology

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We evaluated the effects of leonardite supplementation, mainly composed of humic acids (HAs), as a functional feed additive in weaned piglets. One hundred and twenty piglets (Large Withe × Landrace) were weaned at 28 ± 2 days, and randomly divided into two groups (6 pens per group, 10 piglets per pen). After one week of adaptation, for 40 days groups were fed a control diet (CTRL) and an HA enriched diet (0.25% of leonardite; HAG). Body weight (BW), average daily feed intake (ADFI), average daily gain (ADG), feed conversion ratio (FCR) were measured throughout the experimental period. On the last day of the trial four piglets per pen were randomly selected and the blood was collected to evaluate the serum metabolic profile and diamine oxidase content.Chemical analyses showed that leonardite was characterized by a high content of ash 23.27% (as-fed basis), polyphenolic content of 35.18 ± 3.91 mg TAEq/g, and an antioxidant capacity of 73.31 ± 8.22 μmol TroloxEq/g.The HAG group showed an increase in BW, ADG and ADFI (P < 0.01) compared to the CTRL group during the experimental period. In terms of the serum metabolic profile, the HAG group showed a significant increase in total protein content (P < 0.001), albumin (P < 0.001), albumin/globulin ratio (P < 0.01), phosphatase alkaline (P < 0.01), calcium, phosphorus and magnesium (P < 0.05) compared to the CTRL group.A modulation in the serum lipid profile was recorded. The HAG group showed a decrease in total triglycerides (P < 0.05) with higher total cholesterol (P < 0.05), however only high-density lipoprotein showed a significant increase (P < 0.001) compared to the CTRL group. No significant differences in the amount of diamine oxidase were found between groups.In conclusion, leonardite inclusion in the diet at 0.25% was shown to have a positive effect on the serum lipid profile and animal growth. This thus suggests that leonardite can be considered as a new feed additive, which improves the health and performance of weaned piglets.

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The effect of leonardite and lignite on the health of weaned piglets

Cited by 16 publications

References 44 publications

Evaluation of Tannin Extracts, Leonardite and Tributyrin Supplementation on Diarrhoea Incidence and Gut Microbiota of Weaned Piglets

Evaluation of Tannin Extracts, Leonardite and Tributyrin Supplementation on Diarrhoea Incidence and Gut Microbiota of Weaned Piglets

The impact of humic acid additives on mineral metabolism of rabbits in the postnatal period of ontogenesis

Evaluation of leonardite as a feed additive on lipid metabolism and growth of weaned piglets

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