Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis

The objective of this study was to evaluate the effects of dietary supplementation with tannins (TANs) on productive performance, carcass characteristics, meat quality, oxidative stability, and blood serum antioxidant capacity of sheep through a meta-analysis. Using Scopus, Web of Science, ScienceDi...

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Autores principales:	José Felipe Orzuna-Orzuna, Griselda Dorantes-Iturbide, Alejandro Lara-Bueno, Germán David Mendoza-Martínez, Luis Alberto Miranda-Romero, Héctor Aarón Lee-Rangel
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	oxidative stability natural antioxidants polyphenolic compounds meta-regression Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/143bccfd677d44b383666ba6a55dda53
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spelling	oai:doaj.org-article:143bccfd677d44b383666ba6a55dda532021-11-25T16:18:33ZGrowth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis10.3390/ani111131842076-2615https://doaj.org/article/143bccfd677d44b383666ba6a55dda532021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3184https://doaj.org/toc/2076-2615The objective of this study was to evaluate the effects of dietary supplementation with tannins (TANs) on productive performance, carcass characteristics, meat quality, oxidative stability, and blood serum antioxidant capacity of sheep through a meta-analysis. Using Scopus, Web of Science, ScienceDirect, and PubMed databases, a systematic search was performed for studies published in scientific journals that investigated the effects of TANs supplementation on the variables of interest. Only studies with weaned or older sheep were included. The data analyzed were extracted from 53 peer-reviewed publications. The sheep included in the present study were between 2 and 6 months old, and between 12 and 31 kg of body weight. The effects of TANs were analyzed using random-effects statistical models to examine the standardized mean difference (SMD) between treatments with TANs and control (no TANs). Heterogeneity was explored by meta-regression and a subgroup analysis was performed for covariates that were significant. Supplementation with TANs did not affect dry matter intake, pH, color (L* and b*), Warner–Bratzler shear force, cooking loss and meat chemical composition (<i>p</i> > 0.05). Supplementation with TANs increased daily weight gain (SMD = 0.274, <i>p</i> < 0.05), total antioxidant capacity (SMD = 1.120, <i>p</i> < 0.001), glutathione peroxidase enzyme activity (SMD = 0.801, <i>p</i> < 0.001) and catalase (SMD = 0.848, <i>p</i> < 0.001), and decreased malondialdehyde (MDA) concentration in blood serum (SMD = −0.535, <i>p</i> < 0.05). Supplementation with TANs decreased feed conversion rate (SMD = −0.246, <i>p</i> < 0.05), and the concentration of MDA (SMD = −2.020, <i>p</i> < 0.001) and metmyoglobin (SMD = −0.482, <i>p</i> < 0.05) in meat. However, meat redness (SMD = 0.365), hot carcass yield (SMD = 0.234), cold carcass yield (SMD = 0.510), backfat thickness (SMD = 0.565) and the <i>Longissimus dorsi</i> muscle area (SMD = 0.413) increased in response to TANs supplementation (<i>p</i> < 0.05). In conclusion, the addition of tannins in sheep diets improves productive performance, antioxidant status in blood serum, oxidative stability of meat and some other characteristics related to meat and carcass quality.José Felipe Orzuna-OrzunaGriselda Dorantes-IturbideAlejandro Lara-BuenoGermán David Mendoza-MartínezLuis Alberto Miranda-RomeroHéctor Aarón Lee-RangelMDPI AGarticleoxidative stabilitynatural antioxidantspolyphenolic compoundsmeta-regressionVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3184, p 3184 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	oxidative stability natural antioxidants polyphenolic compounds meta-regression Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	oxidative stability natural antioxidants polyphenolic compounds meta-regression Veterinary medicine SF600-1100 Zoology QL1-991 José Felipe Orzuna-Orzuna Griselda Dorantes-Iturbide Alejandro Lara-Bueno Germán David Mendoza-Martínez Luis Alberto Miranda-Romero Héctor Aarón Lee-Rangel Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
description	The objective of this study was to evaluate the effects of dietary supplementation with tannins (TANs) on productive performance, carcass characteristics, meat quality, oxidative stability, and blood serum antioxidant capacity of sheep through a meta-analysis. Using Scopus, Web of Science, ScienceDirect, and PubMed databases, a systematic search was performed for studies published in scientific journals that investigated the effects of TANs supplementation on the variables of interest. Only studies with weaned or older sheep were included. The data analyzed were extracted from 53 peer-reviewed publications. The sheep included in the present study were between 2 and 6 months old, and between 12 and 31 kg of body weight. The effects of TANs were analyzed using random-effects statistical models to examine the standardized mean difference (SMD) between treatments with TANs and control (no TANs). Heterogeneity was explored by meta-regression and a subgroup analysis was performed for covariates that were significant. Supplementation with TANs did not affect dry matter intake, pH, color (L* and b*), Warner–Bratzler shear force, cooking loss and meat chemical composition (<i>p</i> > 0.05). Supplementation with TANs increased daily weight gain (SMD = 0.274, <i>p</i> < 0.05), total antioxidant capacity (SMD = 1.120, <i>p</i> < 0.001), glutathione peroxidase enzyme activity (SMD = 0.801, <i>p</i> < 0.001) and catalase (SMD = 0.848, <i>p</i> < 0.001), and decreased malondialdehyde (MDA) concentration in blood serum (SMD = −0.535, <i>p</i> < 0.05). Supplementation with TANs decreased feed conversion rate (SMD = −0.246, <i>p</i> < 0.05), and the concentration of MDA (SMD = −2.020, <i>p</i> < 0.001) and metmyoglobin (SMD = −0.482, <i>p</i> < 0.05) in meat. However, meat redness (SMD = 0.365), hot carcass yield (SMD = 0.234), cold carcass yield (SMD = 0.510), backfat thickness (SMD = 0.565) and the <i>Longissimus dorsi</i> muscle area (SMD = 0.413) increased in response to TANs supplementation (<i>p</i> < 0.05). In conclusion, the addition of tannins in sheep diets improves productive performance, antioxidant status in blood serum, oxidative stability of meat and some other characteristics related to meat and carcass quality.
format	article
author	José Felipe Orzuna-Orzuna Griselda Dorantes-Iturbide Alejandro Lara-Bueno Germán David Mendoza-Martínez Luis Alberto Miranda-Romero Héctor Aarón Lee-Rangel
author_facet	José Felipe Orzuna-Orzuna Griselda Dorantes-Iturbide Alejandro Lara-Bueno Germán David Mendoza-Martínez Luis Alberto Miranda-Romero Héctor Aarón Lee-Rangel
author_sort	José Felipe Orzuna-Orzuna
title	Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
title_short	Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
title_full	Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
title_fullStr	Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
title_full_unstemmed	Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis
title_sort	growth performance, meat quality and antioxidant status of sheep supplemented with tannins: a meta-analysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/143bccfd677d44b383666ba6a55dda53
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Growth Performance, Meat Quality and Antioxidant Status of Sheep Supplemented with Tannins: A Meta-Analysis

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