Intervalo de tempo entre observações para avaliação do comportamento ingestivo de tourinhos em confinamento

Marqués, Jair de Araújo; Pinto, Andréa Pereira; Abrahão, José Jorge dos Santos; Nascimento, Willian Gonçalves do

doi:10.5433/1679-0359.2008v29n4p955

Cited by 19 publications

(13 citation statements)

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“…It has also been reported that animals ruminate in the coolest hours of the day -at sunrise and sunset -mostly lying down or in the shade. Marques et al (2008) reported that young feedlot steers ruminated while lying down during 91% of the rumination period. Broom and Fraser (2010) reported that rumination peak occurs during the coolest periods of the day, especially after sunset, and that cattle lie down during rumination.…”

Section: Resultsmentioning

confidence: 99%

Physiological and behavioral responses of Nellore steers to artificial shading in an intensive production system

Ferro

Bueno

Miyagi

et al. 2016

SCA

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The influence of artificial shading on environmental variables and on behavioral responses of Nellore steers in an intensive production system was evaluated in this study. The experiment was conducted in the experimental feedlot of the Department of Animal Science at Universidade Estadual de Goiás, from July to October 2014. Forty-eight male Nellore cattle with an average initial weight of 310 kg were kept in double 24-m 2 stalls, in a total of 24 stalls. Of these, six were in the open air; six were covered with black shade netting of 30% light interception; six with black shade netting 50%; and six with black shade netting 80%, providing 6 m 2 of shade per stall. Temperature-humidity index (THI) and respiratory frequency (RF) were assessed twice weekly and behavior was evaluated fortnightly during 12 h, between 06:00 h and 18.00 h. Feeding behavior, rumination, rest, and social activities such as body care and playful and abnormal activities were observed. A significant increase was found in THI and RF as the shading levels decreased, while a significant difference was recorded in rest and in other activities, water intake, and play behavior. Rest time and playful behavior increased significantly, and other activities and water intake decreased with the increase in shading levels. Shading does not change the time spent on feeding behaviors and rumination, or the frequencies of urination, defecation, cleaning other animals, self-cleaning, and social and abnormal types of behavior. The use of black shade netting of 80% light interception provides greater comfort to animals, promoting welfare and quality of life to them. Key words: Ambience. Behavior. Performance. Welfare. ResumoObjetivou-se avaliar a influência dos níveis de sombreamento artificial nas variáveis ambientais e nas respostas comportamentais de machos bovinos nelore em sistema intensivo de produção. O experimento foi realizado no confinamento experimental do curso de Zootecnia da Universidade Estadual de Goiás, no período de julho a outubro de 2014. Utilizaram-se 48 bovinos machos Nelore, com peso médio inicial de 310 kg, mantidos em baias duplas de 24m², sendo utilizados 24 baias, destas, seis a céu aberto, seis com sombrite preto com malha 30%, seis com malha 50% e seis com malha 80%, cobrindo seis m² de sombra por baia. Foi realizado duas vezes por semana avaliação de ITU e frequência respiratória e quinzenalmente a avaliação de comportamento, com duração de 12 horas, com início as 6:00h e término às 18:00h, observou-se o comportamento alimentar, ruminação, descanso, outras atividades, social, cuidados corporais, lúdico e anormal. Observou-se um aumento significativo nos valores de ITU e FR a medida que se reduzia os níveis de sombreamento. Também foi observado uma diferença significativa no tempo de comportamentos de descanso e em outras atividades, e na frequência do consumo de água e comportamento lúdico, com aumento significativo no tempo de descanso e frequência de comportamento lúdico, e redução de outras atividades e ingestão de ág...

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Section: Resultsmentioning

confidence: 99%

Physiological and behavioral responses of Nellore steers to artificial shading in an intensive production system

Ferro

Bueno

Miyagi

et al. 2016

SCA

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“…According to Marques et al (2008), the need for a higher rate of chewing is related to the amount of indigestible material consumed, material strength and reduction of particle size. Therefore, foods with high content of NDF require more chewing and rumination, requiring the animal more time to complete the feeding process.…”

Section: Resultsmentioning

confidence: 99%

Ingestive behavior of Nellore steers in feedlot fed with diets containing different corn hybrids

et al. 2013

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The objective of this work was to study the feeding behavior of Nellore beef cattle in feedlot fed with diets containing different corn hybrids. Twenty-seven animals averaging 350 ± 24 kg of body weight and 24 months of age, were used. The animals were distributed in a completely randomized design with three treatments (T), where, T1-TDFC: total diet containing flint corn, T2-TDSFC: total diet containing semi-flint corn and T3-TDSDC: total diet containing semi-dent corn, with 9 replicates per treatment. The animals were fed ad libitum twice a day (at 8:00am and 4:00pm) with a isocaloric and isonitrogenous diet, with 30% of sugar cane bagasse and 70% concentrate (88% maize, 8% soybean meal, 3% mineral and vitamin supplement and 1% urea) for 95 days (14 days of adaptation and 3 experimental periods of 27 days each). The animals were weighed at the beginning of the experiment and after each period of 27 days, always in a fasting period of 16 hours. The evaluation of animals feeding behavior occurred at the last day of each period by visual observation every five minutes for full periods of 24 hours. Observations were made in four shifts: morning (06:00 to 12:00), afternoon (12:00 to 18:00), evening (18:00 to 00:00) and early morning (00:00 06:00) to determine the number of ruminal bolus, chewing time, total feeding time, total ruminating standing time, total ruminating lying time, total standing idle time and total lying idle time. During the night's observations, the stalls received artificial illumination to facilitate the data collection and the animals were adapted with light at night for three days before observations. Animals fed with diets containing semi-dent corn had longer chew time and more ruminal bolus than those fed with flint corn, but did not differ from those that received semi-flint corn in the diet. The chewing time and number of ruminal bolus varied with the observation periods, being higher in the morning and decreasing in the afternoon, night and early morning. To the time spent feeding, ruminating and idle it was found that animals fed with diets containing flint corn had higher feeding time than those fed with diets containing semi-flint corn and semi-dent corn. Among the other variables there was no significant difference between treatments. It can be concluded that animals fed diets containing semident corn spent more time chewing food had more ruminal bolus than those fed flint corn in the diet. Animals fed diets containing flint corn spent more time feeding than those fed diets with semi-flint or semi-dent corn. The chewing time and number of ruminal bolus is biggest in the morning and decrease in the afternoon, night and early morning. Keywords: Concentrate, feeding, idle, rumination ResumoO objetivo deste trabalho foi estudar o comportamento ingestivo de bovinos da raça Nelore terminados em confinamento e alimentados com dietas contendo diferentes híbridos de milho. Foram utilizados 27 bovinos com peso vivo médio inicial de 350 ± 24 kg e idade média de 24 meses, distribuídos em...

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“…de alimentação (ALI), ruminação (RUM) e outras atividades (OAT) como, interações com o bezerro, atividade exploratória, ócio etc durante as 24h, em intervalos de 5 min. A partir destas informações, calculou-se a percentagem de tempo do animal ruminando deitado (PRD) e em ócio deitado (POCD), números de períodos de alimentação (NPA), ruminação (NPR) e outras atividades (NPO), segundo Marques et al (2008). A duração média de cada um dos períodos discretos foi obtida pela divisão dos tempos de cada uma das atividades pelos números de períodos discretos, conforme metodologia descrita por Silva et al (2007).…”

Section: Methodsunclassified

Horário alternativo de ordenha e o comportamento ingestivo de vacas mestiças leiteiras em sistema de produção a pasto - doi: 10.4025/actascianimsci.v34i2.12476

Mercês

Marqués

Barbosa

et al. 2012

Acta Sci. Anim. Sci.

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Intervalo de tempo entre observações para avaliação do comportamento ingestivo de tourinhos em confinamento

Cited by 19 publications

References 1 publication

Physiological and behavioral responses of Nellore steers to artificial shading in an intensive production system

Physiological and behavioral responses of Nellore steers to artificial shading in an intensive production system

Ingestive behavior of Nellore steers in feedlot fed with diets containing different corn hybrids

Horário alternativo de ordenha e o comportamento ingestivo de vacas mestiças leiteiras em sistema de produção a pasto - doi: 10.4025/actascianimsci.v34i2.12476

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