Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season

The use of common rhea, Rhea americana, as breeding bird requires knowledge of nutritional physiology. It is important the analysis jointly of feed intake, behavior and weight gain. Our objective was to determine and analyze differences in the feed intake, weight gained and behavior of captive subad...

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Autores principales:	Simoy, María Verónica, Fernandez, Gustavo Javier
Publicado:	2015
Materias:	Behavior Feed Intake Rhea americana Weight Gain
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02183390_v23_n_pS123_Simoy http://hdl.handle.net/20.500.12110/paper_02183390_v23_n_pS123_Simoy
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02183390_v23_n_pS123_Simoy
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spelling	paper:paper_02183390_v23_n_pS123_Simoy2023-06-08T15:21:33Z Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season Simoy, María Verónica Fernandez, Gustavo Javier Behavior Feed Intake Rhea americana Weight Gain The use of common rhea, Rhea americana, as breeding bird requires knowledge of nutritional physiology. It is important the analysis jointly of feed intake, behavior and weight gain. Our objective was to determine and analyze differences in the feed intake, weight gained and behavior of captive subadults and adults male and female rheas during autumn and winter in the Humid Pampas, Argentina. Neither males nor females showed significant seasonal differences in the weights with which they initiated the trials. Daily feed consumption didn't show significant differences neither between seasons nor between sexes. However, we observed differences in weight gain by males between seasons and during the autumn trial, the weight gain was higher for males. Rhea behavior also varied seasonally. Males and females spent more time preening and resting than walking and feeding during autumn, the opposite occurred in winter. The males had a higher tendency towards walking than to feeding, the females showed the opposite in autumn. Analyzing the feed intake, weight gained and the time spent on feeding we hypothesized that males are more efficient for feeding. This analysis allowed us to observe there are nutritional issues that can be explained from a behavioral point of view. © 2015 World Scientific Publishing Company. Fil:Simoy, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernandez, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02183390_v23_n_pS123_Simoy http://hdl.handle.net/20.500.12110/paper_02183390_v23_n_pS123_Simoy
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Behavior Feed Intake Rhea americana Weight Gain
spellingShingle	Behavior Feed Intake Rhea americana Weight Gain Simoy, María Verónica Fernandez, Gustavo Javier Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
topic_facet	Behavior Feed Intake Rhea americana Weight Gain
description	The use of common rhea, Rhea americana, as breeding bird requires knowledge of nutritional physiology. It is important the analysis jointly of feed intake, behavior and weight gain. Our objective was to determine and analyze differences in the feed intake, weight gained and behavior of captive subadults and adults male and female rheas during autumn and winter in the Humid Pampas, Argentina. Neither males nor females showed significant seasonal differences in the weights with which they initiated the trials. Daily feed consumption didn't show significant differences neither between seasons nor between sexes. However, we observed differences in weight gain by males between seasons and during the autumn trial, the weight gain was higher for males. Rhea behavior also varied seasonally. Males and females spent more time preening and resting than walking and feeding during autumn, the opposite occurred in winter. The males had a higher tendency towards walking than to feeding, the females showed the opposite in autumn. Analyzing the feed intake, weight gained and the time spent on feeding we hypothesized that males are more efficient for feeding. This analysis allowed us to observe there are nutritional issues that can be explained from a behavioral point of view. © 2015 World Scientific Publishing Company.
author	Simoy, María Verónica Fernandez, Gustavo Javier
author_facet	Simoy, María Verónica Fernandez, Gustavo Javier
author_sort	Simoy, María Verónica
title	Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
title_short	Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
title_full	Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
title_fullStr	Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
title_full_unstemmed	Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season
title_sort	sex differences in feed intake, behavior and weight gained by greater rheas (rhea americana) in captivity during the pre-reproductive season
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02183390_v23_n_pS123_Simoy http://hdl.handle.net/20.500.12110/paper_02183390_v23_n_pS123_Simoy
work_keys_str_mv	AT simoymariaveronica sexdifferencesinfeedintakebehaviorandweightgainedbygreaterrheasrheaamericanaincaptivityduringtheprereproductiveseason AT fernandezgustavojavier sexdifferencesinfeedintakebehaviorandweightgainedbygreaterrheasrheaamericanaincaptivityduringtheprereproductiveseason
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Sex Differences in Feed Intake, Behavior and Weight Gained by Greater Rheas (Rhea Americana) in Captivity during the Pre-Reproductive Season

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