Growth Performance and Ruminal Fermentation in Lambs with Endoparasites and In Vitro Effect of Medicinal Plants

Klára Mikulová, Daniel Petrič, Michaela Komáromyová, Dominika Batťányi, Martyna Kozłowska, Adam Cieslak, Sylwester Ślusarczyk, Marián Várady and Zora Váradyová ()
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Klára Mikulová: Centre of Biosciences of Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 040 01 Košice, Slovakia
Daniel Petrič: Centre of Biosciences of Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 040 01 Košice, Slovakia
Michaela Komáromyová: Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01 Košice, Slovakia
Dominika Batťányi: Centre of Biosciences of Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 040 01 Košice, Slovakia
Martyna Kozłowska: Department of Animal Nutrition, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
Adam Cieslak: Department of Animal Nutrition, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
Sylwester Ślusarczyk: Department of Pharmaceutical Biology and Botany, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland
Marián Várady: Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01 Košice, Slovakia
Zora Váradyová: Centre of Biosciences of Slovak Academy of Sciences, Institute of Animal Physiology, Šoltésovej 4-6, 040 01 Košice, Slovakia

Agriculture, 2023, vol. 13, issue 9, 1-12

Abstract: We investigated growth performance and ruminal fermentation associated with gastrointestinal nematode (GIN) Haemonchus contortus in lambs and in vitro ruminal fermentation of mallow, chamomile, fumitory, wormwood (Herbmix), and chicory using inoculum from GIN-infected lambs. Twelve lambs were equally divided into two groups: uninfected animals (CON) and animals infected (INF) with approximately 5000 third-stage larvae derived from the MHCo1 strain of GIN H. contortus. Two lambs per group were killed on days 48, 49, and 50 after infection and ruminal content was collected separately from each lamb. Batch cultures of ruminal fluid from CON and INF were incubated for 24 h in vitro with 0.25 g meadow hay, Herbmix, and chicory using an in vitro gas production technique. Daily weight gain was relatively lower in the INF than the CON group, but not significantly (72.6 vs. 130.1 g/day). The ruminal populations of protozoa, bacteria, total Archaea , Methanobacteriales , and Methanomicrobiales were significantly higher in the INF than in the CON group. The substrates affected the concentrations of n -butyrate, iso -butyrate, n -valerate, iso -valerate, ammonia-N, total gas, and methane ( p < 0.001) in vitro. GIN infection affected fermentation and microbial population in the rumens of the lambs, and chicory was a promising substrate to modulate ruminal fermentation in vitro.

Keywords: Archaea; ciliated protozoa; Haemonchus contortus; ruminal fermentation parameters; methane emission (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: 2023
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