<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Tapeworms parasitize at sites that are important for the management of micronutrients, including zinc. Therefore, it has been hypothesized that tapeworms will significantly affect the excretion of zinc in the feces of a host. The aim of this work was to evaluate the effects that tapeworms have on the excretion of zinc in the feces of the host. Rats were divided into 4 groups: groups 0T and MT (infected with <italic>Hymenolepis diminuta</italic> (Rudolphi, 1819)) and groups 00 and M0 (uninfected). The experimental groups (M0 and MT) were fed a standard rodent compound feed (ST-1) with added zinc lactate; the daily zinc intake was 20.5 mg. The control groups (00 and 0T) were fed only ST-1 with 1.75 mg of added Zn per day. For six weeks, the amount of consumed feed was recorded and fecal samples were taken. The samples were then analyzed by optical emission spectrometry (ICP-OES), and levels of excreted zinc were subsequently calculated as a percentage. The most signifi cant difference in zinc excretion levels between the experimental groups was observed in the third week, when rats infected with tapeworms (MT) excreted substantially lower levels of zinc than did uninfected rats (M0). This difference amounted to 28.36 % (p &lt;0.01). In the control groups, tapeworms affected the excretion of zinc in the feces to a lesser extent, and the most substantial difference in zinc levels was seen in the fifth week (8.46 %). However, there was no signifi cant difference in zinc excretion levels between the control groups during any of the monitored weeks. Tapeworms in the host affect levels of zinc excreted in the feces. However, this is dependent on the amount or form of zinc ingested.</p></abstract>

Tapeworms parasitize at sites that are important for the management of micronutrients, including zinc. Therefore, it has been hypothesized that tapeworms will significantly affect the excretion of zinc in the feces of a host. The aim of this work was to evaluate the effects that tapeworms have on the excretion of zinc in the feces of the host. Rats were divided into 4 groups: groups 0T and MT (infected with Hymenolepis diminuta (Rudolphi, 1819)) and groups 00 and M0 (uninfected). The experimental groups (M0 and MT) were fed a standard rodent compound feed (ST-1) with added zinc lactate; the daily zinc intake was 20.5 mg. The control groups (00 and 0T) were fed only ST-1 with 1.75 mg of added Zn per day. For six weeks, the amount of consumed feed was recorded and fecal samples were taken. The samples were then analyzed by optical emission spectrometry (ICP-OES), and levels of excreted zinc were subsequently calculated as a percentage. The most signifi cant difference in zinc excretion levels between the experimental groups was observed in the third week, when rats infected with tapeworms (MT) excreted substantially lower levels of zinc than did uninfected rats (M0). This difference amounted to 28.36 % (p <0.01). In the control groups, tapeworms affected the excretion of zinc in the feces to a lesser extent, and the most substantial difference in zinc levels was seen in the fifth week (8.46 %). However, there was no signifi cant difference in zinc excretion levels between the control groups during any of the monitored weeks. Tapeworms in the host affect levels of zinc excreted in the feces. However, this is dependent on the amount or form of zinc ingested.

Excretion of dietary zinc in mammals (rats) fed overdoses of zinc lactate and infected with tapeworms

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Tapeworms parasitize at sites that are important for the management of micronutrients, including zinc. Therefore, it has been hypothesized that tapeworms will...

Experimental group	Zinc intake (mg/day)	Faecal excretion zinc (mg/day)	Faecal excretion zinc (%)
00	1.75 ± 0.13	1.22 ± 0.18	73.67
0T	1.71 ± 0.16	1.19 ± 0.19	70.19
M0	20.25 ± 1.12	17.64 ± 2.78	87.2
MT	19.23 ± 1.75	12.90 ± 1.79	64.84

Experimental group	Number of animals	Infection tapeworm	Zinc dose (mg/25 g food)	Zinc dose/week (mg)
00	6	-	1.75	10.5
0T	6	+	1.75	10.5
M0	6	-	20.5	123
MT	6	+	20.5	123

Moisture (%)	12.5
Nitrogen compounds (%)	24
Fiber (%)	4.4
Lipids (%)	3.4
Ash (%)	6.8
Lysin (mg/kg)	14 000
Methionine (mg/kg)	4 800
Ca (mg/kg)	11 000
P (mg/kg)	7 200
Na (mg/kg)	1 800
Cu (mg/kg)	20
Zn (mg/kg)	70
Se (mg/kg)	0.38

Excretion of dietary zinc in mammals (rats) fed overdoses of zinc lactate and infected with tapeworms

Publicado en línea: 25 dic 2021

Páginas: 339 - 345

Recibido: 19 ene 2021

Aceptado: 03 jul 2021

DOI: https://doi.org/10.2478/helm-2021-0038

Palabras clave
zinc, excretion, fecal, tapeworm, rat, supplement

© 2021 V. Sloup, I. Jankovská, J. Száková, V. Karešová, S. Lanková, S. Sloup, I. Langrová, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Zinc dosages and levels of Zn excreted in feces (mg) over a 6-week period.

Zinc contents in feed.

Composition of ST-1 (commercially available from Velaz Ltd. CR).

Excretion of dietary zinc in mammals (rats) fed overdoses of zinc lactate and infected with tapeworms

Publicado en línea: 25 dic 2021

Páginas: 339 - 345

Recibido: 19 ene 2021

Aceptado: 03 jul 2021

DOI: https://doi.org/10.2478/helm-2021-0038

Palabras clavezinc, excretion, fecal, tapeworm, rat, supplement

© 2021 V. Sloup, I. Jankovská, J. Száková, V. Karešová, S. Lanková, S. Sloup, I. Langrová, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Zinc dosages and levels of Zn excreted in feces (mg) over a 6-week period.

Zinc contents in feed.

Composition of ST-1 (commercially available from Velaz Ltd. CR).

Palabras clave
zinc, excretion, fecal, tapeworm, rat, supplement