Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions

SUMMARY: The experiment was conducted to evaluate the effects of dietary supplemental chromium (Cr) on growth performance, meat quality, intestinal morphology, mucosa Hsp70 mRNA expression and antioxidant status of ducks reared under heat stress conditions. All ducks were randomly divided into three...

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Autores principales:	Li,Rong, Zhou,Ying, Li,Yan, Guo,Liang, Zhang,Yifeng, Qi,Zhili
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2018
Materias:	Chromium Heat stress Duck Small intestine Hsp70.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022018000100226
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spelling	oai:scielo:S0717-950220180001002262019-09-16Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress ConditionsLi,RongZhou,YingLi,YanGuo,LiangZhang,YifengQi,Zhili Chromium Heat stress Duck Small intestine Hsp70. SUMMARY: The experiment was conducted to evaluate the effects of dietary supplemental chromium (Cr) on growth performance, meat quality, intestinal morphology, mucosa Hsp70 mRNA expression and antioxidant status of ducks reared under heat stress conditions. All ducks were randomly divided into three treatment groups, respectively, control group (Control, 23 ± 2 °C), heat stress group (HS, 32 ±2 °C), Cr picolinate group (CrPic, 32 ± 2 °C, 0.2 mg Cr/kg). Feed and distilled-deionized water were available ad libitum for an experimental phase of 35 days. Samples were collected on the day 14, 21 and 35 to determine biological and hematological values. Results showed that heat stress or dietary supplemental Cr both didn’t have distinct influence on growth performance (P>0.05), compared to controls. Ducks fed 0.2 mg Cr/kg diet had greater ultimate pH (pHu)(P<0.05) than HS group. At day 14, the ratio of villus height to crypt depth (V/C) in CrPic group significantly increased (P<0.05) than that of HS group in jejunum. Heat stress remarkably increased Hsp70 mRNA expression in jejunum compared with controls (P<0.05). While the expression of Hsp70 mRNA in CrPic group was significantly decreased compared with HS (P<0.05). At day 21, the V/C of ileum in CrPic group significantly increased compared with HS group (P<0.05). Serum SOD levels in CrPic group were significantly higher than those in HS group (P<0.05). At day 35, Hsp70 mRNA expression and serum T-SOD levels in CrPic group significantly increased compared with controls (P<0.05). T-AOC in HS group significantly decreased compared with controls (P<0.05). Results indicate that dietary Cr supplementation doesn’t influence ducks’ growth performance, but has a positive effect on meat quality, small intestine morphology, also regulates Hsp70 mRNA expression under heat stress conditions, and enhances the antioxidant status.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.36 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022018000100226en10.4067/S0717-95022018000100226
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chromium Heat stress Duck Small intestine Hsp70.
spellingShingle	Chromium Heat stress Duck Small intestine Hsp70. Li,Rong Zhou,Ying Li,Yan Guo,Liang Zhang,Yifeng Qi,Zhili Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
description	SUMMARY: The experiment was conducted to evaluate the effects of dietary supplemental chromium (Cr) on growth performance, meat quality, intestinal morphology, mucosa Hsp70 mRNA expression and antioxidant status of ducks reared under heat stress conditions. All ducks were randomly divided into three treatment groups, respectively, control group (Control, 23 ± 2 °C), heat stress group (HS, 32 ±2 °C), Cr picolinate group (CrPic, 32 ± 2 °C, 0.2 mg Cr/kg). Feed and distilled-deionized water were available ad libitum for an experimental phase of 35 days. Samples were collected on the day 14, 21 and 35 to determine biological and hematological values. Results showed that heat stress or dietary supplemental Cr both didn’t have distinct influence on growth performance (P>0.05), compared to controls. Ducks fed 0.2 mg Cr/kg diet had greater ultimate pH (pHu)(P<0.05) than HS group. At day 14, the ratio of villus height to crypt depth (V/C) in CrPic group significantly increased (P<0.05) than that of HS group in jejunum. Heat stress remarkably increased Hsp70 mRNA expression in jejunum compared with controls (P<0.05). While the expression of Hsp70 mRNA in CrPic group was significantly decreased compared with HS (P<0.05). At day 21, the V/C of ileum in CrPic group significantly increased compared with HS group (P<0.05). Serum SOD levels in CrPic group were significantly higher than those in HS group (P<0.05). At day 35, Hsp70 mRNA expression and serum T-SOD levels in CrPic group significantly increased compared with controls (P<0.05). T-AOC in HS group significantly decreased compared with controls (P<0.05). Results indicate that dietary Cr supplementation doesn’t influence ducks’ growth performance, but has a positive effect on meat quality, small intestine morphology, also regulates Hsp70 mRNA expression under heat stress conditions, and enhances the antioxidant status.
author	Li,Rong Zhou,Ying Li,Yan Guo,Liang Zhang,Yifeng Qi,Zhili
author_facet	Li,Rong Zhou,Ying Li,Yan Guo,Liang Zhang,Yifeng Qi,Zhili
author_sort	Li,Rong
title	Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
title_short	Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
title_full	Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
title_fullStr	Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
title_full_unstemmed	Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions
title_sort	effects of chromium picolinate supplementation on growth performance, small intestine morphology and antioxidant status in ducks under heat stress conditions
publisher	Sociedad Chilena de Anatomía
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022018000100226
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_version_	1718445037533003776

Effects of Chromium Picolinate Supplementation on Growth Performance, Small Intestine Morphology and Antioxidant Status in Ducks Under Heat Stress Conditions

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