The aim of this study was to assess the effects of two levels of clinoptilolite administered in feed (2% and 4%) on some selected performance indicators, metabolic utilization of basic nutrients and the health status of laying hens. The selected 24 Bovans Goldline hybrid laying hens were divided into three equal groups, two experimental groups (E1 and E2) and one control group (C). The laying hens were housed individually in cages with an automatic supply of drinking water, manual feeding, in a setting with controlled light and temperature regimens. Hens from individual groups were all fed a complete feed mix of the same composition and the only difference was in clinoptilolite supplementation: feed mixes for E1 and E2 groups contained 2% and 4% of clinoptilolite (commercial additive ZeoFeed) respectively, replacing the same amounts of wheat. The hens received feed mixes and drinking water ad libitum. During this 28-day experiment, feed consumption and the number and weight of eggs laid were monitored individually for each hen. At the end of the experiment, the balance test using the indicator method (Cr 2 O 3 ) was performed in all eight hens in each of the groups. The results of balance tests were then used to calculate the metabolic utilization of selected nutrients (nitrogen, fat, ash, nitrogen-free extracts, starch, gross energy, Ca, P). After the balance tests, blood samples for haematological and biochemical examinations were collected via puncture of the vena basilica. The addition of 2% clinoptilolite to feed mix resulted in a highly significant (P ≤ 0.01) increase in mean egg weight to 64.69 g, but the addition of 4% clinoptilolite in group E2 resulted in a highly significant (P ≤ 0.01) decrease in mean egg weight to 62.20 g compared to the control (63.73 g). Moreover, daily feed mix consumption in group E1 decreased to 114 g per one laying hen/day compared to the controls (118 g per one laying hen/day). In group E2 (4% clinoptilolite), daily consumption of feed mix increased compared with the controls to 124 g. The 2% clinoptilolite supplementation of E1 group feed slightly increased metabolic utilization of fat, nitrogen-free extracts, starch and gross energy compared to group C. Results of haematological test of the hens’ blood showed significant changes in haemoglobin, whose values in groups C and E1 were significantly higher (P ≤ 0.05) than in group E2. Differences in the values of the biochemical indicators monitored (total protein, glucose, cholesterol, triacylglycerols, calcium, phosphorus, magnesium and the AST enzyme) between group C and experimental groups E1 and E2 were not significant and remained within the range of reference values. ZeoFeed, nutrient balance, biochemical profile, mineral profile, haematological profile

https://actavet.vfu.cz/media/pdf/avb_2010079S9S029.pdf

Effect of the Feed Additive Clinoptilolite (ZeoFeed) on Nutrient Metabolism and Production Performance of Laying Hens

SUMMARY Zeolites occur in nature in specific types of rocks, mostly of volcanic origin. Some studies have proved that zeolite added as a dietary supplement in poultry results in weight gain and improves digestion because zeolites slow down the passage rate of digesta through the digestive tract and controls the release of nutrients in the small intestine. The aim of this study was to investigate the effects of different levels of zeolite on intestinal morphometry in female broiler chickens. One-day-old Ross 308 broilers were assigned randomly into 3 groups, with 30 birds per treatment. The 3 dietary treatments were: basal diet only (control group), basal diet + 2% zeolite, and basal diet + 3% zeolite. The broiler females were randomly selected from each group, slaughtered samples from duodenum, jejunum /proximal, middle, distal/ and ileum were sampled for histological characteristics at the 40 d of the study. The broilers fed 2% of zeolite were observed to have a tendency towards increased villus height, villus width, villus perimeter, villus section area, and crypt depth throughout the distal regions of small intestine and ileum. Supplementation with 3% of zeolite was associated with a greater villus height, villus width, villus perimeter, villus section area, villus crypts, and mucosa thickness in jejunum and ileum mucosa compared with those same areas in the control. The results suggest that dietary supplementation of zeolite increases intestinal morphology parameters in the gastrointestinal tract of female broiler chickens that improved growth performance.

The effect of dietary supplementation of transcarpathian zeolite on intestinal morphology in female broiler chickens.

AFCF and clinoptilolite use in reduction of (137)Cs deposition in several days' contaminated broiler chicks.

Comparison of results of radon level measurements obtained with charcoal canisters and airthings detectors during summer at TCAS

Quantification of radioactive metabolite Sr-90 in environmental samples

Produced radionuclides in foods of animal origin 2016-2022

The objective of this study was to evaluate the 137 Cs binding capacity of clinoptilolite.In the first in vitro experiment we investigated sorption of 137 Cs to natural and modified forms of clinoptilolite in highly acid solution,prepared to be similar to that of the gut of pigs (pH =2 3)at 37 oC.In the second in vivo experiment 137 Cs binding to a modified form of clinoptilolite was studied in orally contaminated broiler chickens.137 Cs sorption in the high acidity solution depended on clinoptilolite concentration and varied between 30 85 %of the initial activity.In the chickens,three hours after 137 Cs administration,there was 67%and 63%lower accumulation of 137 Cs in meat and edible organs (respectively)and seven hours after 137 Cs administration,there was 69% and 49% lower accumulation of 137 Cs in meat and edible organs (respectively)compared to the controls with no clinoptilolite added in food. Natural and modified forms of clinoptilolite have been shown to high sorption efficiency towards 137 Cs ions and could be recommended as possible radiocaesium binders in domestic animals.;

/pdf/the-effect-of-clinoptilolite-on-137-cs-binding-in-broiler-35tsfxb1tm.pdf

The effect of clinoptilolite on 137 Cs binding in broiler chickens

Gamma spectrometry control of fish and fish food during 2016-2021

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Produced radionuclides in foods of animal origin 2016-2022

The effect of clinoptilolite on 137 Cs binding in broiler chickens

Gamma spectrometry control of fish and fish food during 2016-2021