Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).

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The aim of this study was to understand the benefit of diet mixing for Creole goats grazingnative forage species in the central Monte desert of Argentina and the drivers of preferencein the mixed diet. To achieve this goal, cafeteria-style experiments were conducted withthirty female Creole goats (2...

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Autores principales:	Egea, Angela Vanina, Allegretti, Liliana Inés, Paez Lama, Sebastián Antonio, Grilli, Diego Javier, Fucili, Mercedes, Guevara, Juan Carlos, Villalba, Juan josé
Formato:	Institucional - Material de Difusión
Lenguaje:	Inglés
Publicado:	Comité editorial Animal Feed Science and Technology 2020
Materias:	Forage diversity Woody plant Goat Intake rate Digestibility Tannins
Acceso en línea:	http://repositorio.umaza.edu.ar//handle/00261/1802 https://www.sciencedirect.com/science/article/pii/S0377840116300712#!
Aporte de:	UMAZA Digital (Universidad MAZA - Mendoza) de Universidad Juan Agustín MAZA

id	I56-R162-00261-1802
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spelling	I56-R162-00261-18022023-09-14T02:07:05Z Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina). Egea, Angela Vanina Allegretti, Liliana Inés Paez Lama, Sebastián Antonio Grilli, Diego Javier Fucili, Mercedes Guevara, Juan Carlos Villalba, Juan josé Forage diversity Woody plant Goat Intake rate Digestibility Tannins The aim of this study was to understand the benefit of diet mixing for Creole goats grazingnative forage species in the central Monte desert of Argentina and the drivers of preferencein the mixed diet. To achieve this goal, cafeteria-style experiments were conducted withthirty female Creole goats (2 years old; 44 ± 1.4 kg) and forage species that are typicallyingested by goats in this region: Two tanniniferous (Tricomaria usillo, Mimosa ephedroides)and three non-tanniniferous shrubs (Prosopis flexuosa, Capparis atamisquea, Atriplex lampa).In Experiment 1, goats were assigned to three groups (n = 10); two groups were offered sin-gle tannin-containing shrubs as their basal diet (T. usillo; SDTU or M. ephedroides, SDME),whereas the third group received a combination of all five forages (Mixed diet of forages,MD). After a fifteen-day adaptation period, half the animals in each group (n = 5) were dosedwith polyethylene glycol (PEG), a polymer that neutralizes the negative effects of tannins,whereas the other half (Control) were not dosed (CG). Daily dry matter intake (DMI), in vivoapparent digestibility of the diet (ADD) and nitrogen (ADN) were determined. For goatsfed MD, preference was estimated based on the DMI of each of the forages offered. Jugularblood samples were collected on the first and last days of the experiment to determineconcentrations of blood urea nitrogen (BUN) and serum metabolites indicative of liverdamage. In experiment 2, intake rates (IR) of the five forage species were estimated. Nosignificant differences in DMI were detected among treatments. However, goats offered achoice of forages (MD) in the CG treatment had greater diet digestibility and lower BUNthan animals fed the single shrubs, showing evidence of a nutritional benefit with dietarydiversity. Goats changed their foraging preferences in response to PEG supplementation.Animals in the CG treatment preferred M. ephedroides whereas animals in the PEGG treat-ment preferred A. lampa. There was a positive correlation between forage preference andIR of crude protein (r = 0.65; P < 0.001) in PEGG goats, and between forage preference andIR of total tannins (r = 0.77, P < 0.001) in CG goats. When PEG attenuated biological effectsof condensed tannins, goats switched their preference from forages that offered the great-est IR of total tannins (i.e., M. ephedroides) to those that led to the greatest IR of crudeprotein (i.e., A. lampa). In summary, a mixed diet led to greater nutritional benefits than single diets, which contribute to explain the diverse array of food items goats typicallyshow when browsing in the central Monte desert of Argentina. Our results also show thatCP, tannins and plant structure (which offer variable intake rates) play significant roles ingoats’ foraging preferences in this environment. 2020-10-23T11:23:10Z 2020-10-23T11:23:10Z 2016-02-26 Institucional - Material de Difusión Egea, V. A., Allegretti, L. I., Paez Lama, S. A., Grilli, D. J., Fucili, M., Guevara J. C., y Villalba, J. J: (2016). Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina). Animal Feed Science and Technology 215, 45-57. https://doi.org/10.1016/j.anifeedsci.2016.02.021 0377-8401 http://repositorio.umaza.edu.ar//handle/00261/1802 https://www.sciencedirect.com/science/article/pii/S0377840116300712#! eng image/png Comité editorial Animal Feed Science and Technology 215;
institution	Universidad Juan Agustín MAZA
institution_str	I-56
repository_str	R-162
collection	UMAZA Digital (Universidad MAZA - Mendoza)
language	Inglés
orig_language_str_mv	eng
topic	Forage diversity Woody plant Goat Intake rate Digestibility Tannins
spellingShingle	Forage diversity Woody plant Goat Intake rate Digestibility Tannins Egea, Angela Vanina Allegretti, Liliana Inés Paez Lama, Sebastián Antonio Grilli, Diego Javier Fucili, Mercedes Guevara, Juan Carlos Villalba, Juan josé Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
topic_facet	Forage diversity Woody plant Goat Intake rate Digestibility Tannins
description	The aim of this study was to understand the benefit of diet mixing for Creole goats grazingnative forage species in the central Monte desert of Argentina and the drivers of preferencein the mixed diet. To achieve this goal, cafeteria-style experiments were conducted withthirty female Creole goats (2 years old; 44 ± 1.4 kg) and forage species that are typicallyingested by goats in this region: Two tanniniferous (Tricomaria usillo, Mimosa ephedroides)and three non-tanniniferous shrubs (Prosopis flexuosa, Capparis atamisquea, Atriplex lampa).In Experiment 1, goats were assigned to three groups (n = 10); two groups were offered sin-gle tannin-containing shrubs as their basal diet (T. usillo; SDTU or M. ephedroides, SDME),whereas the third group received a combination of all five forages (Mixed diet of forages,MD). After a fifteen-day adaptation period, half the animals in each group (n = 5) were dosedwith polyethylene glycol (PEG), a polymer that neutralizes the negative effects of tannins,whereas the other half (Control) were not dosed (CG). Daily dry matter intake (DMI), in vivoapparent digestibility of the diet (ADD) and nitrogen (ADN) were determined. For goatsfed MD, preference was estimated based on the DMI of each of the forages offered. Jugularblood samples were collected on the first and last days of the experiment to determineconcentrations of blood urea nitrogen (BUN) and serum metabolites indicative of liverdamage. In experiment 2, intake rates (IR) of the five forage species were estimated. Nosignificant differences in DMI were detected among treatments. However, goats offered achoice of forages (MD) in the CG treatment had greater diet digestibility and lower BUNthan animals fed the single shrubs, showing evidence of a nutritional benefit with dietarydiversity. Goats changed their foraging preferences in response to PEG supplementation.Animals in the CG treatment preferred M. ephedroides whereas animals in the PEGG treat-ment preferred A. lampa. There was a positive correlation between forage preference andIR of crude protein (r = 0.65; P < 0.001) in PEGG goats, and between forage preference andIR of total tannins (r = 0.77, P < 0.001) in CG goats. When PEG attenuated biological effectsof condensed tannins, goats switched their preference from forages that offered the great-est IR of total tannins (i.e., M. ephedroides) to those that led to the greatest IR of crudeprotein (i.e., A. lampa). In summary, a mixed diet led to greater nutritional benefits than single diets, which contribute to explain the diverse array of food items goats typicallyshow when browsing in the central Monte desert of Argentina. Our results also show thatCP, tannins and plant structure (which offer variable intake rates) play significant roles ingoats’ foraging preferences in this environment.
format	Institucional - Material de Difusión
author	Egea, Angela Vanina Allegretti, Liliana Inés Paez Lama, Sebastián Antonio Grilli, Diego Javier Fucili, Mercedes Guevara, Juan Carlos Villalba, Juan josé
author_facet	Egea, Angela Vanina Allegretti, Liliana Inés Paez Lama, Sebastián Antonio Grilli, Diego Javier Fucili, Mercedes Guevara, Juan Carlos Villalba, Juan josé
author_sort	Egea, Angela Vanina
title	Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
title_short	Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
title_full	Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
title_fullStr	Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
title_full_unstemmed	Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).
title_sort	diet mixing and condensed tannins help explain foraging preferences by creole goats facing the physical and chemical diversity of native woody plants in the central monte desert (argentina).
publisher	Comité editorial Animal Feed Science and Technology
publishDate	2020
url	http://repositorio.umaza.edu.ar//handle/00261/1802 https://www.sciencedirect.com/science/article/pii/S0377840116300712#!
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_version_	1808040423040483328

Diet mixing and condensed tannins help explain foraging preferences by Creole goats facing the physical and chemical diversity of native woody plants in the central Monte desert (Argentina).

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