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The environmental sustainability of beef production is a significant concern within the food production system. Tannins (TANs) can be used to minimize the environmental impact of ruminant production because they can improve ruminal fermentation and ruminants’ lifetime performances and mitigate methane (CH4) emissions. The objective of this study was to evaluate the effects of dietary supplementation with TANs as sustainable natural alternative to reduce the environmental impact on growth performance, rumen fermentation, enteric CH4 emissions, and nitrogen (N) use efficiency of beef cattle through a meta-analysis. A comprehensive search of studies published in scientific journals that investigated the effects of TANs’ supplementation on the variables of interest was performed using the Scopus, Web of Science, and PubMed databases. The data analyzed were extracted from 32 peer-reviewed publications. The effects of TANs were assessed using random-effects statistical models to examine the standardized mean difference (SMD) between TANs’ treatments and control (non-TANs). The heterogeneity was explored by meta-regression and subgroup analysis was performed for the covariates that were significant. TANs’ supplementation did not affect weight gain, feed consumption, feed efficiency, or N use efficiency (p > 0.05). However, it reduced the concentration of ammonia nitrogen in rumen (SMD = −0.508, p< 0.001), CH4 emissions per day (SMD = −0.474, p< 0.01) and per unit dry matter intake (SMD = −0.408, p< 0.01), urinary N excretion (SMD = −0.338, p< 0.05), and dry matter digestibility (SMD = −0.589, p< 0.001). Ruminal propionate (SMD = 0.250) and butyrate (SMD = 0.198) concentrations and fecal N excretion (SMD = 0.860) improved in response to TANs’ supplementation (p< 0.05). In conclusion, it is possible to use TANs as a CH4 mitigation strategy without affecting cattle growth rate. In addition, the shift from urinary to fecal N may be beneficial for environment preservation, as urinary N induces more harmful emissions than fecal N. Therefore, the addition of tannins in the diet of beef cattle could be used as a sustainable natural alternative to reduce the environmental impact of beef production.
José Orzuna-Orzuna; Griselda Dorantes-Iturbide; Alejandro Lara-Bueno; Germán Mendoza-Martínez; Luis Miranda-Romero; Pedro Hernández-García. Effects of Dietary Tannins’ Supplementation on Growth Performance, Rumen Fermentation, and Enteric Methane Emissions in Beef Cattle: A Meta-Analysis. Sustainability 2021, 13, 7410 .
AMA StyleJosé Orzuna-Orzuna, Griselda Dorantes-Iturbide, Alejandro Lara-Bueno, Germán Mendoza-Martínez, Luis Miranda-Romero, Pedro Hernández-García. Effects of Dietary Tannins’ Supplementation on Growth Performance, Rumen Fermentation, and Enteric Methane Emissions in Beef Cattle: A Meta-Analysis. Sustainability. 2021; 13 (13):7410.
Chicago/Turabian StyleJosé Orzuna-Orzuna; Griselda Dorantes-Iturbide; Alejandro Lara-Bueno; Germán Mendoza-Martínez; Luis Miranda-Romero; Pedro Hernández-García. 2021. "Effects of Dietary Tannins’ Supplementation on Growth Performance, Rumen Fermentation, and Enteric Methane Emissions in Beef Cattle: A Meta-Analysis." Sustainability 13, no. 13: 7410.
The objective of this study was to determine the effects of the supplementation of a polyherbal mixture (HM) on the productive performance, carcass characteristics, meat quality, and the profile of blood metabolites of lambs fed a high-concentrate diet. Thirty-six male Pelibuey lambs (25.21 ± 0.96 kg BW) were housed in individual pens during a 56-day feeding period and were randomly assigned to four treatments: (1) Control (CON): Basal diet without HM; (2) HM1: CON + 1 g of HM kg−1 dry matter (DM); (3) HM2: CON + 2 g of HM kg−1 DM; and (4) HM3: CON + 3 g of HM kg−1 DM. Data were analyzed using the GLM (General Linear Model) procedure of statistical analysis system (SAS), and linear and quadratic effects were tested to evaluate the effects of the HM level. A quadratic increase was observed in the dry matter intake and in daily weight gain (p < 0.05) of lambs fed with HM2 and HM1, respectively. However, final body weight, body condition, carcass characteristics, and meat quality were similar among treatments (p > 0.05). It was observed a linear increase (p < 0.05) in the mean corpuscular hemoglobin concentration. Lymphocytes in blood from lambs supplemented with the HM1 diet increased and segmented neutrophils decreased compared to lambs receiving the CON treatment (p < 0.05). The concentration of uric acid in the blood had a linear increase (p < 0.05) and the serum creatinine level decreased (p < 0.05) as the HM dietary dose increased. In conclusion, dietary inclusion of 2 and 1 g of HM kg−1 of DM improves feed consumption and daily weight gain, respectively, without affecting carcass characteristics, meat quality, and health status on finishing lambs.
José Orzuna-Orzuna; Griselda Dorantes-Iturbide; Alejandro Lara-Bueno; Germán Mendoza-Martínez; Luis Miranda-Romero; Pedro Hernández-García. Growth Performance, Carcass Characteristics, and Blood Metabolites of Lambs Supplemented with a Polyherbal Mixture. Animals 2021, 11, 955 .
AMA StyleJosé Orzuna-Orzuna, Griselda Dorantes-Iturbide, Alejandro Lara-Bueno, Germán Mendoza-Martínez, Luis Miranda-Romero, Pedro Hernández-García. Growth Performance, Carcass Characteristics, and Blood Metabolites of Lambs Supplemented with a Polyherbal Mixture. Animals. 2021; 11 (4):955.
Chicago/Turabian StyleJosé Orzuna-Orzuna; Griselda Dorantes-Iturbide; Alejandro Lara-Bueno; Germán Mendoza-Martínez; Luis Miranda-Romero; Pedro Hernández-García. 2021. "Growth Performance, Carcass Characteristics, and Blood Metabolites of Lambs Supplemented with a Polyherbal Mixture." Animals 11, no. 4: 955.