Effect of Knotweed in Diet on Physiological Changes in Pig

Petr Maděra, Marcela Kovářová, Tomáš Frantík, Radek Filipčík, Jan Novák, Štěpán Vencl, Lucie Maděrová, Miroslav Rozkot, Stanislava Kuchařová, Eva Václavková, Jana Truněčková, Jana Volková, Zora Nývltová and Michal Bartoš
Additional contact information
Petr Maděra: Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University in Brno, Zemědělská 1665/3, 613 00 Brno, Czech Republic
Marcela Kovářová: Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University in Brno, Zemědělská 1665/3, 613 00 Brno, Czech Republic
Tomáš Frantík: Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University in Brno, Zemědělská 1665/3, 613 00 Brno, Czech Republic
Radek Filipčík: Department of Animal Breeding, Mendel University in Brno, Zemědělská 1665/1, 613 00 Brno, Czech Republic
Jan Novák: Dibaq, a.s., Helvíkovice 90, 564 01 Žamberk, Czech Republic
Štěpán Vencl: Jirchářská 217, 517 41 Kostelec nad Orlicí, Czech Republic
Lucie Maděrová: Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
Miroslav Rozkot: Institute of Animal Sciences p.r.i., Department of Pig Breeding, Komenského 1239, 517 41 Kostelec nad Orlicí, Czech Republic
Stanislava Kuchařová: Institute of Animal Sciences p.r.i., Department of Pig Breeding, Komenského 1239, 517 41 Kostelec nad Orlicí, Czech Republic
Eva Václavková: Institute of Animal Sciences p.r.i., Department of Pig Breeding, Komenského 1239, 517 41 Kostelec nad Orlicí, Czech Republic
Jana Truněčková: Institute of Animal Sciences p.r.i., Department of Pig Breeding, Komenského 1239, 517 41 Kostelec nad Orlicí, Czech Republic
Jana Volková: Research Institute of Organic Synthesis, Rybitví 296, 533 54 Rybitví, Czech Republic
Zora Nývltová: Research Institute of Organic Synthesis, Rybitví 296, 533 54 Rybitví, Czech Republic
Michal Bartoš: Research Institute of Organic Synthesis, Rybitví 296, 533 54 Rybitví, Czech Republic

Agriculture, 2021, vol. 11, issue 2, 1-22

Abstract: Knotweeds ( Reynoutria spp.) are plants producing useful secondary metabolites, including stilbenes (resveratrol and piceid have been studied more thoroughly) and emodin. Many studies have shown the positive effects of resveratrol on the health status of humans and animals. Resveratrol has been added into pigs’ diet as a pure extract, but it has never been supplemented into the fodder with knotweed biomass which contains other secondary metabolites, thus we would expect it would provide a more complex effect. The study objective is to discover whether the 2 weight percent addition of knotweed into pigs’ diet will have positive effects on their health. We compared two groups of Prestice Black-Pied pigs, the experimental group was fed by fodder with the knotweed rhizomes additive, the control group without knotweed additive. Investigated parameters were feed consumption, the composition of excrements, weight increment, muscle-to-fat ratio, fatty acid composition and blood haematology and biochemistry. The addition of knotweed stimulated a whole range of physiological changes. It positively stimulated weight growth and increased the back fat and proportion of muscle, but statistically significant only in gilts. On the other hand, the changes in fatty acid composition seemed to be unsatisfactory. It is the first study of the effects of knotweed on pigs’ development, and more detailed research is desirable.

Keywords: Reynoutria; fodder additive; health condition; Prestice Black-Pied pig (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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