8 research outputs found
The effect of excess dietary manganese on uninfected and Ascaridia galli infected chicks
Abstract The effect of dietary manganese from two different sources on chicks (uninfected and infected with Ascaridia galli) was studied
Effect of selenium and Ascaridia galli infection on antioxidant biomarkers in broiler chickens: a mathematical model for parasite reduction and host growth
The activity of selenium-dependent glutathione peroxidase (GPX), liver
concentration of vitamin E, and plasma and liver selenium levels were
used for estimation of the antioxidant status of broiler chickens
infected with Ascaridia galli. These biomarkers were recorded in an
experiment covering 70 days p.i. At the same time the establishment rate
of A. galli in chicken intestines, gain in the host body weight and
chicken survival were studied. Broiler chickens (Cobb hybrids) were
infected with 1450 embryonated A. galli eggs and treated with Sel-plex.
A mathematical model was applied to determine the rate of nematode
reduction and the relative rate of gain of host body weight, which are
essential kinetic parameters of parasite-host interaction. The activity
of GPX increased with both elevated selenium and reduced infection
levels. The concentrations of selenium and vitamin E, and the GPX
activity in the infected chickens demonstrated a similar pattern of
change with time after day 30 p.i. The supplementation of the broilers
with dietary selenium in the form of Sel-plex improved their antioxidant
status. Increases by 29% in vitamin E concentration, 15% in GPX
activity, and 22% in liver selenium concentration, respectively, were
recorded in the infected and treated, compared to infected and untreated
broilers
Administration of Zn-Co-Mn basic salt to chickens with ascaridiosis - II. Sex ratio and microelement levels in Ascaridia galli and in treated and untreated chickens
Hisex chickens were infected with 1,450 embryonated Ascaridia galli eggs
and treated with a new synthesized basic mixed salt
(ZnxCoyMn1-x-y)(.)(OH)(6)SO(4.)2H(2)O). The worm burden was determined
and sex ratios for A. galli of M:F=1.4 and M:F=2 in untreated and
treated chickens, respectively, were found. A decrease in the mean
establishment rate of A. galli in treated chickens was observed. The
levels of zinc, cobalt and manganese were determined in liver and muscle
of the host and in male and female A. galli. The survival of the
chickens and gain in body weight were improved, and the restoration of
microelement content was observed by treatment with the salt. A positive
effect of the basic Zn-Co-Mn salt was also observed in the nematode
microelement levels. Significant differences were found between the
levels of zinc, cobalt and manganese in male and female A. galli
Effect of mixed basic salts on live performance and trace metals in growing rabbits infected with Fasciola hepatica
6 pages, 4 tables.The aim of our study was to assess the effects of mixed basic salts on growth and liver trace metals content of rabbits infected with Fasciola hepatica. Chinchilla rabbits were experimentally infected with Fasciola hepatica and treated with triple hydroxy crystals newly synthesized (ZnxCoyCu1-x-y)4(OH) 6SO4.2H2O and (ZnxCoyMn1-x-y)4(OH) 6SO4.2H2O. Body weight gain, feed intake, feed conversion, mortality and trace metal (Zn, Mn, Co, Cu, Al) were studied on day 14th and 60th p.i. Trace metals were established by AAS. Trace metals imbalance was observed in acute and chronic fasciolosis — reduced levels of metals. Supplementation of ZnCo,Mn - salt influenced positively Mn, Zn and Co content and Zn, Co, Cu - salt increased Co, Cu and Zn levels. BWG and mortality were changed positively by the both salts. Feed intake and feed conversion were not influenced by treatment with both salts. Treatment with Zn-Co-Mn salt has more beneficial effects on BWG in the rabbits (infected or uninfected) and liver trace metal imbalance associated with acute and chronic fasciolosis than Zn-Co-Cu salt.The study was supported by Spanish-Bulgarian Scientific Cooperation (CSIC-BAS)-2005BG008.Peer reviewe