Behavioral aspects of Santa Ines sheep kept in pasture in a tropical rainforest climate/Aspectos comportamentais de ovinos da raca Santa Ines mantidos em pasto em clima tropical umido

This study aimed to evaluate behavioral aspects of Santa Ines sheep in pasture in humid tropical climate. In order to do so, nine Santa Ines sheep were kept on pasture, exposed to the climate directly, without shade, for 24 days, with 12 alternate days in each period (dry and raining) in 2015. The b...

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Published in:Ciência rural Vol. 49; no. 1
Main Authors: Manno, Maria Cristina, Rodrigues, Luiz Fernando de Souza, Lima, Kedson Raul de Souza, Carvalhal, Monique Valeria de Lima, Filho, Silas Santiago Rodrigues, da Costa, Gleyce Lopes, Monteiro, Ailime Nayara Gomes, Barreto, Andrea do Nascimento
Format: Journal Article
Language:English
Published: Universidade Federal de Santa Maria 01-01-2019
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Summary:This study aimed to evaluate behavioral aspects of Santa Ines sheep in pasture in humid tropical climate. In order to do so, nine Santa Ines sheep were kept on pasture, exposed to the climate directly, without shade, for 24 days, with 12 alternate days in each period (dry and raining) in 2015. The behavioral parameters evaluated were: food consumption, standing idleness, lying idle and rumination. Observations occurred from 08:00 A.M. to 05:55 P.M. The experimental was a completely randomized design (CRD) with two treatments (rainy season and dry period), nine replications, one animal per experimental unit. To understand the correlations of the behavioral parameters with the climatic variables, Pearson's correlation was performed. Approximate average values between the rainy and dry periods for the behavioral variables were observed, but there was a greater intake in the volume of water in the dry period (9.59L/sheep). Also, there were significant differences in the behavior of the animals throughout the day. In the hottest time of the day, at 02:00 PM., there was standing idle of25.83min., lying idle of 1.21min., and spent less time-consuming food (27.08min.) in relation to other schedules. We concluded that the sheep had similar behavioral parameters in the rainy and dry periods, but when we observe the times of the days, the behaviors are different. The main activity recorded was grazing, and the variables, temperature and relative humidity of the air influence differently between the seasons, being more marked in the dry period. Key words: dry season, raining season, grazing. Este estudo objetivou avaliar aspectos comportamentais de ovinos Santa Ines criados em pasto em clima tropical umido. Para tanto, foram utilizados nove carneiros Santa Ines, mantidos a pasto, expostos diretamente ao clima, sem sombra, durante 24 dias, sendo 12 dias alternados em cada periodo (seco e chuvoso) em 2015. Os parametros comportamentais avaliados foram consumo de alimento, ocio em pe, ocio deitado e ruminacao. As observacoes ocorreram das 08:00h as 17h:55min. O delineamento experimental foi o inteiramente casualizado (DIC) com dois tratamentos (periodo chuvoso e periodo seco), nove repeticoes, um animal por unidade experimental. Para entender as correlacoes dos parametros comportamentais com as variaveis climaticas foi realizada a correlacao de Pearson. Foram observados valores medios gerais aproximados entre os periodos chuvoso e seco para as variaveis comportamentais, porem, houve maior ingestao no volume de agua no periodo seco (9,59L/ovino). Tambem, ocorreu diferenca no comportamento dos animais ao longo do dia. No horario mais quente do dia, das 14h as 15h, registrou-se ocio em pe de 25,83min. e ocio deitado de 1,21min., e os animais passaram menor tempo consumindo alimento (27,08min.) em relacao aos demais horarios. Podemos concluir que os ovinos apresentaram parametros comportamentais semelhantes nos periodos chuvoso e seco, porem, quando observamos os horarios dos dias, os comportamentos sao diferentes. A principal atividade registrada foi o pastejo. As variaveis temperatura e a umidade relativa do ar influenciam de forma diferente o comportamento dos ovinos entre as estacoes do ano, sendo mais marcantes no periodo seco. Palavras-chave: estacao seca, estacao chuvosa, pastejo.
ISSN:0103-8478
DOI:10.1590/0103-8478cr20180033