Tannins in the diet for lactating goats from different genetic groups in the Brazilian semiarid: Nitrogen, energy and water balance

Background. Tannins, as polyphenolic secondary metabolites of plants, are attributed both beneficial and adverse functions when they are consumed by animals, effects that depend on the chemical structure and the concentration used. Among the beneficial properties of tannins, their ability to modulate the ruminal microbiota has been observed, reducing the populations of methanogens and methane (CH4) emissions. In addition, effects of tannins have been observed on the performance of ruminants, attributable to tannins or the by-products of their degradation. Objective. Compile and analyze available information about the properties of tannins, their use in ruminant feeding, their effects on ruminal microorganisms, and the results obtained in the mitigation of CH4. Methodology. A literature review was made through databases available on the web such as NCBI, ELSEVIER, Google Scholar, Oxford Academic, as well as information available in books. Main findings. In the present review, information was collected on the characteristics and properties of condensed tannins (TC) and hydrolyzable tannins (TH), their effects and adaptations in the populations of ruminal microorganisms, in addition to the effects of tannins on the metabolism of ruminants. Implications. The dose and source of tannins in the ruminant diet are decisive in the results obtained in terms of CH4 emissions and animal response. Performance will depend on the tolerance of the animal species to the effects of each type of tannin consumed. Conclusion. A better understanding of the properties, the effects on the microbiota and on the animal metabolism, could help in the implementation of more appropriate strategies for the use of forages that can contribute to the reductions in CH4 emissions, with a balanced approach with the production and animal welfare.

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“…Ribeiro da Silva et al, (2021) TC: taninos condensados, TH: taninos hidrolizables. ↑: incrementó, ↓: se redujo.…”

Section: Abo-donia Et Al (2017)unclassified

Interacción Taninos Vegetales, Microbiota Ruminal Y Metabolismo Del Rumiante

Espinoza-Velasco¹,

Ramírez-Mella

2021

Trop Subtrop Agroecosyst

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Blend of secondary metabolites from mesquite to improve nutrient digestibility, microbial protein, efficient use of nitrogen, ruminal parameters, and blood metabolites in sheep

Barbosa

Silva

Torres

et al. 2022

Trop Anim Health Prod

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Inclusion of Cocoa Bean Shell in the Diet of Dairy Goats: Effects on Milk Production Performance and Milk Fatty Acid Profile

et al. 2022

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The use of agro-industrial by-products in animal nutrition is a promising strategy to reduce the food-feed competition, the diet cost at farm level and the environmental impact of animal-derived food production. In this study, the suitability of cocoa bean shell (CBS), a by-product of the cocoa industry, as a feed ingredient in the diet of dairy goats was evaluated, with a focus on the related implications on feed intake, milk yield, milk main constituents, and fatty acid (FA) profile of milk fat. Twenty-two Camosciata delle Alpi goats were divided into two balanced groups. All the goats were fed mixed hay ad libitum. The control group (CTRL; n = 11) also received 1.20 kg/head × day of a commercial concentrate, while in the experimental group (CBS; n = 11) 200 g of the CTRL concentrate were replaced by the same amount of pelleted CBS. The total dry matter intake of the goats was reduced by the dietary inclusion of CBS (P ≤ 0.01). The milk yield, as well as the milk fat, protein, and casein contents and yields were unaffected by the treatment. Milk from the CBS-fed goats showed decreased urea content when compared to the CTRL group (P ≤ 0.001). Milk from the CBS group of goats also showed increased concentrations of total branched-chain FA (both iso and anteiso forms; P ≤ 0.001) and total monounsaturated FA (P ≤ 0.05), as well as a decreased ∑ n6/∑ n3 FA ratio (P ≤ 0.05). De novo saturated FA, total polyunsaturated FA, total conjugated linoleic acids, and the majority of ruminal biohydrogenation intermediates remained unaffected by the dietary treatment. These results suggest that CBS can be strategically used as an alternative non-conventional raw material in diets intended for lactating goats, with no detrimental effects on their milk production performance. The use of CBS in goat nutrition may be hindered by the presence of theobromine, a toxic alkaloid. Special attention is needed by nutritionists to avoid exceeding the theobromine limits imposed by the current legislation. Detheobromination treatments are also suggested in literature to prevent toxic phenomena.

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Tannins in the diet for lactating goats from different genetic groups in the Brazilian semiarid: Nitrogen, energy and water balance

Cited by 3 publications

References 32 publications

Interacción Taninos Vegetales, Microbiota Ruminal Y Metabolismo Del Rumiante

Interacción Taninos Vegetales, Microbiota Ruminal Y Metabolismo Del Rumiante

Blend of secondary metabolites from mesquite to improve nutrient digestibility, microbial protein, efficient use of nitrogen, ruminal parameters, and blood metabolites in sheep

Inclusion of Cocoa Bean Shell in the Diet of Dairy Goats: Effects on Milk Production Performance and Milk Fatty Acid Profile

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