Comportamento ingestivo de vacas mestiças alimentadas com diferentes volumosos

Martins, Susi Cristina dos Santos Guimarães; Júnior, Vicente Ribeiro Rocha; Caldeira, Luciana Albuquerque; Barros, Isabella Coutinho; Silva, Geanderson Walder Vieira da; Costa, Maria Dulcinéia da; Palma, Malber Natham Nobre de; Souza, André Santos de

doi:10.4322/rbcv.2014.072

Cited by 4 publications

(4 citation statements)

References 7 publications

(7 reference statements)

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“…Analisando-se a Tabela 1, poderia ser esperado que a qualidade da fibra dietética ficasse prejudicada com as inclusões dos farelos de girassol e mamona, tendo em vista os maiores teores de FDA desses ingredientes em relação ao farelo de soja. Conforme vários autores (23)(24)(25)(26)(27)(28) , o tempo despendido com ruminação é altamente correlacionado com o consumo de FDN por bovinos. No entanto, a distribuição da atividade de ruminação é bastante influenciada pela alimentação, já que a ruminação se processa logo após os períodos de alimentação, quando o animal está mais tranquilo (29) .…”

Section: Resultsunclassified

Comportamento Ingestivo De Vacas F1 Holandês X Zebu Alimentadas Com Diferentes Fontes De Compostos Nitrogenados

et al. 2016

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Resumo: Avaliou-se o comportamento ingestivo de vacas F1 Holandês x Zebu com 80 ± 12 dias de lactação e produção média de 20 ± 0,42 kg de leite/dia, alimentadas com diferentes fontes de compostos nitrogenados: farelos de soja, de girassol, de mamona desintoxicados e ureia. Utilizaram-se dois quadrados latinos 4 x 4, compostos de quatro animais e quatro dietas, com quatro períodos experimentais. O comportamento ingestivo foi obtido por avaliação visual para definir o tempo despendido em alimentação, ruminação, ócio e para avaliar mastigações merícicas e tempo de mastigação por bolo ruminal. Não houve diferença no tempo em alimentação (P = 0,1384), ruminação (P = 0,5964), ócio (P = 0,6314), número de períodos de alimentação (P = 0,5995), de ruminação (P = 0,4575) e de ócio (P = 0,4151), duração dos períodos de alimentação (P = 0,2711), ruminação (P = 0,8699) e ócio (P = 0,4025), em função da dieta utilizada. Não houve diferença na produção de leite (P = 0.2755) das vacas entre as dietas experimentais. A adição do farelo de girassol à dieta, em relação à utilização de ureia, resulta em menor consumo de FDN em minutos/kg (P = 0,0399) e consequentemente menor eficiência de alimentação da matéria seca (P = 0,0069), comparado ao tratamento com ureia. Assim, algumas características do comportamento ingestivo de vacas F1 Holandês x Zebu em lactação podem ser alteradas pelo uso de diferentes fontes nitrogenadas; entretanto, sem prejudicar a produção média de 20 kg de leite corrigida para 3,5% de gordura/dia.

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Section: Resultsunclassified

Comportamento Ingestivo De Vacas F1 Holandês X Zebu Alimentadas Com Diferentes Fontes De Compostos Nitrogenados

et al. 2016

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“…When animals are supplemented, new variables interfere with the animal's diurnal behaviour. Bovines, just like other animals, seek to maintain food intake according to their nutritional needs and adjust their behaviour in response to changes in the environment, dividing the time between grazing activities, rumination, social interactions and idleness (Hodgson, 1990;Martins et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Ingestive diurnal behaviour of grazing beef cattle

Lima

Fernandes

Silva

et al. 2020

SCA

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Three experiments were conducted with the objective of evaluating the effects of supplementation (concentrate or mineral supplementation), supplementation strategy (continuous or strategic supplementation) and gender class on the ingestive and diurnal behaviour of grazing beef cattle. To evaluate the effect of the supplementation (Experiment 1) and the gender class (Experiment 3) on their diurnal behaviour, behaviour visualisations were performed by two people at observation stations outside the picket area with the aid of binoculars. The animal behaviour was classified as: supplement intake, grazing, water intake, standing ruminating, standing idle, lying ruminating, lying idle and walking. To evaluate the effect of the supplementation strategy on the ingestive behaviour of the supplement (Experiment 2), refusals of the supplement were weighed for six consecutive days at different times (20, 40, 60, 90, 120, 180, 240, 480 and 1,440 minutes) after the concentrate was supplied. The intake of concentrate per animal, at each observation time, was calculated by subtracting the weight of the scraps at that time from the total weight of the batch of supplement provided on the day, and dividing the result by the number of animals in each batch. Finally, a logistic model was adjusted for each treatment. A 10% significance level was adopted for all statistical procedures. Concentrate supplementation reduced the time that the animals spent grazing. The continuous supplementation strategy affected the uniformity of the supplement intake speed, without affecting the average speed or the total supplement intake. The gender class of the animals also influenced their diurnal behaviour, castrated males spent more time lying, compared to females. The specificities of cattle behaviour should be considered when delineating the supplementation of grazing cattle, since the type of supplement, previous supplementation and gender class interfere with their behaviour.

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“…The feeding behavior of cattle in pastures is characterized by long periods of feeding, from 4 to 12h00 per day, for low energy diets (BÜRGER et al, 2000). The time spent in grazing and rumination is influenced by the pasture type and use of supplements, besides presenting differences in the duration of ingestion, rumination and of idle (MARTINS et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Comportamento ingestivo de novilhas Nelore em pastejo no período seco suplementadas com sal mineral e tipos de ureia

Resende

Silva

Costa

et al. 2018

SCA

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In this study, the feeding behavior of Nellore heifers receiving supplements containing mineral salt, conventional urea and slow release urea during the grazing stage at Brachiaria brizantha-based pastures during the dry period of the year was evaluated. Fifty-six heifers with approximately 284.72 ± 27.48 kg of body weight were used, distributed in a completely randomized design with four different treatment types: mineral salt; Urea - supplementation with 8.18% conventional urea; Mixed urea - supplementation with 4.09% conventional urea and 4.39% slow release urea and slow urea - supplementation with 8.78% slow release urea. Animals supplemented with mineral salt had longer grazing times compared to those supplemented with mixed urea, slow urea and regular urea. The dry matter intake, neutral detergent fiber and total digestible nutrients presented a similar effect, with higher values for heifers consuming supplements containing regular urea and slow urea compared to those of mixed urea. However, when the efficiency of hourly intake was evaluated, the animals that received urea supplement were more efficient in relation to the other treatments. The number of grazing periods for heifers receiving slow urea supplementation was higher compared to heifers receiving salt and mixed urea. The duration of grazing and rumination periods was longer for heifers receiving salt supplementation and mixed urea than those receiving regular urea and slow urea. It is recommended to use supplements at the level of 0.3% of body weight for heifers receiving conventional urea.

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Comportamento ingestivo de vacas mestiças alimentadas com diferentes volumosos

Cited by 4 publications

References 7 publications

Comportamento Ingestivo De Vacas F1 Holandês X Zebu Alimentadas Com Diferentes Fontes De Compostos Nitrogenados

Comportamento Ingestivo De Vacas F1 Holandês X Zebu Alimentadas Com Diferentes Fontes De Compostos Nitrogenados

Ingestive diurnal behaviour of grazing beef cattle

Comportamento ingestivo de novilhas Nelore em pastejo no período seco suplementadas com sal mineral e tipos de ureia

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