Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs

This study investigated the relative bioavailability (RBV) of zinc from different sources used as feed additives in ruminant nutrition based on Zn concentration and the activity of Zn-dependent enzymes in lamb tissues. Thirty-two male lambs of Improved Valachian breed (three months old) were randoml...

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Autores principales:	Ľubomíra Grešáková, Katarína Tokarčíková, Klaudia Čobanová
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	feed additives trace minerals bioavailability lambs antioxidant enzymes Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/3aa142ea043246f7898b1063dff1b236
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spelling	oai:doaj.org-article:3aa142ea043246f7898b1063dff1b2362021-11-25T15:59:04ZBioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs10.3390/agriculture111110932077-0472https://doaj.org/article/3aa142ea043246f7898b1063dff1b2362021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0472/11/11/1093https://doaj.org/toc/2077-0472This study investigated the relative bioavailability (RBV) of zinc from different sources used as feed additives in ruminant nutrition based on Zn concentration and the activity of Zn-dependent enzymes in lamb tissues. Thirty-two male lambs of Improved Valachian breed (three months old) were randomly assigned to four dietary treatments. For 120 days, the lambs were fed either the total mix ration (TMR) providing 29.6 mg Zn/kg or the TMR supplemented with either zinc sulphate (ZnSO<sub>4</sub>), zinc chelate of glycine hydrate (ZnGly), or zinc chelate of protein hydrolysate (ZnProt). The supplemented diets contained a total of 80 mg Zn/kg. Supplementation with ZnSO<sub>4</sub> increased Zn concentration in the liver, while the highest Zn uptake was in the kidneys of lambs fed the ZnProt diet. The ZnGly supplemented diet elevated the activity of the Cu/Zn-dependent enzyme superoxide dismutase (Cu/Zn SOD) in the liver. Regardless of Zn source, Zn supplementation resulted in increased total antioxidant status (TAS) in the pancreas. The estimated RBV of Zn based on linear regression slope ratios did not differ among the Zn sources. Our results indicate similar availability of Zn from organic dietary sources as from commonly used zinc sulphate; however, their effects on mineral and antioxidant status may differ slightly in growing lambs.Ľubomíra GrešákováKatarína TokarčíkováKlaudia ČobanováMDPI AGarticlefeed additivestrace mineralsbioavailabilitylambsantioxidant enzymesAgriculture (General)S1-972ENAgriculture, Vol 11, Iss 1093, p 1093 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	feed additives trace minerals bioavailability lambs antioxidant enzymes Agriculture (General) S1-972
spellingShingle	feed additives trace minerals bioavailability lambs antioxidant enzymes Agriculture (General) S1-972 Ľubomíra Grešáková Katarína Tokarčíková Klaudia Čobanová Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
description	This study investigated the relative bioavailability (RBV) of zinc from different sources used as feed additives in ruminant nutrition based on Zn concentration and the activity of Zn-dependent enzymes in lamb tissues. Thirty-two male lambs of Improved Valachian breed (three months old) were randomly assigned to four dietary treatments. For 120 days, the lambs were fed either the total mix ration (TMR) providing 29.6 mg Zn/kg or the TMR supplemented with either zinc sulphate (ZnSO<sub>4</sub>), zinc chelate of glycine hydrate (ZnGly), or zinc chelate of protein hydrolysate (ZnProt). The supplemented diets contained a total of 80 mg Zn/kg. Supplementation with ZnSO<sub>4</sub> increased Zn concentration in the liver, while the highest Zn uptake was in the kidneys of lambs fed the ZnProt diet. The ZnGly supplemented diet elevated the activity of the Cu/Zn-dependent enzyme superoxide dismutase (Cu/Zn SOD) in the liver. Regardless of Zn source, Zn supplementation resulted in increased total antioxidant status (TAS) in the pancreas. The estimated RBV of Zn based on linear regression slope ratios did not differ among the Zn sources. Our results indicate similar availability of Zn from organic dietary sources as from commonly used zinc sulphate; however, their effects on mineral and antioxidant status may differ slightly in growing lambs.
format	article
author	Ľubomíra Grešáková Katarína Tokarčíková Klaudia Čobanová
author_facet	Ľubomíra Grešáková Katarína Tokarčíková Klaudia Čobanová
author_sort	Ľubomíra Grešáková
title	Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
title_short	Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
title_full	Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
title_fullStr	Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
title_full_unstemmed	Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs
title_sort	bioavailability of dietary zinc sources and their effect on mineral and antioxidant status in lambs
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3aa142ea043246f7898b1063dff1b236
work_keys_str_mv	AT lubomiragresakova bioavailabilityofdietaryzincsourcesandtheireffectonmineralandantioxidantstatusinlambs AT katarinatokarcikova bioavailabilityofdietaryzincsourcesandtheireffectonmineralandantioxidantstatusinlambs AT klaudiacobanova bioavailabilityofdietaryzincsourcesandtheireffectonmineralandantioxidantstatusinlambs
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Bioavailability of Dietary Zinc Sources and Their Effect on Mineral and Antioxidant Status in Lambs

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