Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons

Abstract Extensive farming systems are characterized by seasons with different diet quality along the year, as pasture availability is strictly depending on climatic conditions. A number of problems for cattle may occur in each season. Tannins are natural polyphenolic compounds that can be integrate...

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Autores principales:	R. Menci, A. Natalello, G. Luciano, A. Priolo, B. Valenti, G. Farina, M. Caccamo, V. Niderkorn, M. Coppa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fabf715d3ed04c018e0cde17ec04604b
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spelling	oai:doaj.org-article:fabf715d3ed04c018e0cde17ec04604b2021-12-02T17:13:17ZEffect of dietary tannin supplementation on cow milk quality in two different grazing seasons10.1038/s41598-021-99109-y2045-2322https://doaj.org/article/fabf715d3ed04c018e0cde17ec04604b2021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99109-yhttps://doaj.org/toc/2045-2322Abstract Extensive farming systems are characterized by seasons with different diet quality along the year, as pasture availability is strictly depending on climatic conditions. A number of problems for cattle may occur in each season. Tannins are natural polyphenolic compounds that can be integrated in cows’ diet to overcome these seasonal problems, but little is known about their effect on milk quality according to the season. This study was designed to assess the effects of 150 g/head × day of tannin extract supplementation on proximate composition, urea, colour, cheesemaking aptitude, antioxidant capacity, and fatty acid (FA) profile of cow milk, measured during the wet season (WS) and the dry season (DS) of Mediterranean climate. In WS, dietary tannins had marginal effect on milk quality. Conversely, in DS, the milk from cows eating tannins showed 10% lower urea and slight improvement in antioxidant capacity, measured with FRAP and TEAC assays. Also, tannin extract supplementation in DS reduced branched-chain FA concentration, C18:1 t10 to C18:1 t11 ratio and rumenic to linoleic acid ratio. Tannins effect on rumen metabolism was enhanced in the season in which green herbage was not available, probably because of the low protein content, and high acid detergent fibre and lignin contents in diet. Thus, the integration of tannin in the diet should be adapted to the season. This could have practical implications for a more conscious use of tannin-rich extracts, and other tannin sources such as agro-industrial by-products and forages.R. MenciA. NatalelloG. LucianoA. PrioloB. ValentiG. FarinaM. CaccamoV. NiderkornM. CoppaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q R. Menci A. Natalello G. Luciano A. Priolo B. Valenti G. Farina M. Caccamo V. Niderkorn M. Coppa Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
description	Abstract Extensive farming systems are characterized by seasons with different diet quality along the year, as pasture availability is strictly depending on climatic conditions. A number of problems for cattle may occur in each season. Tannins are natural polyphenolic compounds that can be integrated in cows’ diet to overcome these seasonal problems, but little is known about their effect on milk quality according to the season. This study was designed to assess the effects of 150 g/head × day of tannin extract supplementation on proximate composition, urea, colour, cheesemaking aptitude, antioxidant capacity, and fatty acid (FA) profile of cow milk, measured during the wet season (WS) and the dry season (DS) of Mediterranean climate. In WS, dietary tannins had marginal effect on milk quality. Conversely, in DS, the milk from cows eating tannins showed 10% lower urea and slight improvement in antioxidant capacity, measured with FRAP and TEAC assays. Also, tannin extract supplementation in DS reduced branched-chain FA concentration, C18:1 t10 to C18:1 t11 ratio and rumenic to linoleic acid ratio. Tannins effect on rumen metabolism was enhanced in the season in which green herbage was not available, probably because of the low protein content, and high acid detergent fibre and lignin contents in diet. Thus, the integration of tannin in the diet should be adapted to the season. This could have practical implications for a more conscious use of tannin-rich extracts, and other tannin sources such as agro-industrial by-products and forages.
format	article
author	R. Menci A. Natalello G. Luciano A. Priolo B. Valenti G. Farina M. Caccamo V. Niderkorn M. Coppa
author_facet	R. Menci A. Natalello G. Luciano A. Priolo B. Valenti G. Farina M. Caccamo V. Niderkorn M. Coppa
author_sort	R. Menci
title	Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
title_short	Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
title_full	Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
title_fullStr	Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
title_full_unstemmed	Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
title_sort	effect of dietary tannin supplementation on cow milk quality in two different grazing seasons
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fabf715d3ed04c018e0cde17ec04604b
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Effect of dietary tannin supplementation on cow milk quality in two different grazing seasons

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