&lt;b&gt;Diurnal ingestive behavior of Holstein calves reared in different systems: feedlot or pasture

Segabinazzi, Luciane Rumpel; Menezes, Luís Fernando Glasenapp de; Silva, Carlos Eduardo Kruger da; Martinello, Clederson; Boito, Bruna; Molineti, Marcos Luis

doi:10.4025/actascianimsci.v36i2.22653

Cited by 8 publications

(9 citation statements)

References 13 publications

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“…The variation in diet digestibility between animals is due to factors such as the mechanism of digestion and absorption, rumen retention time and ingestive behaviour (Russell and Gahr 2000). On pasture, the animals have 40.1% more feeding time and~14.2% more time on rumination activity than on feedlot, and the greatest chewing stimulation promotes increased saliva production, which improves the conditions of ruminal pH and development of microbes responsible for greater digestion of fibre (Segabinazzi et al 2014). This fact corroborates with the results of Cota et al (2014), who observed a lower nutrient intake and greater digestibility in Nellore cattle on pasture than on feedlot.…”

Section: Discussionmentioning

confidence: 99%

Feed efficiency and enteric methane production of Nellore cattle in the feedlot and on pasture

et al. 2018

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The objective of the present study was to assess the relationship between residual feed intake (RFI) evaluated in a feedlot-performance test and on pasture, and to determine the effect of feedlot RFI classification on enteric methane (CH4) production in the feedlot and on pasture. Seventy-three animals (25 with a low RFI, 24 with a medium RFI and 24 with a high RFI) classified in a feedlot performance test were subjected to performance testing on Brachiaria brizantha cv. Marandu pasture. Enteric CH4 was measured in a sample of these animals (n = 47, with high and low RFI) by the sulfur hexafluoride tracer-gas technique after the feedlot-performance test and during the performance test on pasture. In the feedlot-performance test, dry-matter intake (DMI) of low-RFI animals was 9.4% and 19.7% lower (P < 0.05) than that of medium- and high-RFI animals respectively. However, there was no difference in DMI and, consequently, in RFI on pasture among animals classified as low, medium and high RFI. Accordingly, there is evidence of re-ranking of animals for RFI performance tested in the feedlot after weaning and, subsequently, on pasture. During the period of enteric CH4 measurement in the feedlot and on pasture, the DMI, neutral detergent-fibre intake and gross-energy intake of low-RFI animals were lower than those of high-RFI animals, and low-RFI animals exhibited greater DM and neutral detergent fibre digestibility only in the feedlot. Enteric CH4 production did not differ between low- and high-RFI animals either in the feedlot (101 and 107 g CH4/day) or on pasture (101 and 95.9 g CH4/day). A significant difference in CH4 yield (CH4/kg DMI) was observed on pasture between animals with low and high RFI (17.6 and 13.7 g CH4/kg DMI respectively). The results did not support the hypothesis that an increase in feed efficiency, evaluated in growing animals in feedlot-performance tests, decreases enteric CH4 production (g/day) proportionally to the lower DMI.

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Section: Discussionmentioning

confidence: 99%

Feed efficiency and enteric methane production of Nellore cattle in the feedlot and on pasture

et al. 2018

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“…Acta Scientiarum. Animal Sciences, v. 44, e53714, 2022 The time spent for feed intake by the animals, especially in feedlot systems, can vary considerably depending on the feed management system adopted (Segabinazzi et al, 2014). The fact that the animals in the present study spent more time feeding in the periods 8:00-11:00am and 5:00-8:00pm, in relation to rumination and idling activities, was due to the silage supply at these intervals, stimulating silage intake.…”

Section: Resultsmentioning

confidence: 99%

“…The evaluation of ingestive behavior was conducted uninterrupted for 48h, on the last 2 days of the experimental period through visual observations. These observations were made by four previously trained observers, with each observation lasting 5 min., during which the feeding, ruminating, and idling behavior of the animals were recorded (Segabinazzi et al, 2014).…”

Section: Experimental Design and Data Collectionmentioning

confidence: 99%

Ingestive behavior of lambs fed relocated and inoculated whole-plant corn silage

Cardoso

Mendonça

Queiroz

et al. 2021

Acta Sci. Anim. Sci.

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We aimed to determine the effect of relocation of whole-plant corn silage (WPCS) with different fermentation profiles on ingestive behavior of lambs. Twenty-four male Santa Inês lambs, were used in a completely randomized block design based on initial body weight (17.5 ± 1.8 kg) for the following treatments: CS: WPCS (not inoculated and not relocated); R-12h: WPCS relocated for 12h; IR-12h: WPCS inoculated with Lactobacillus plantarum and relocated for 12h; and R-24h: WPCS not inoculated and relocated for 24h. Ingestive behavior was observed as continuous (feeding, ruminating, and idling) and specific (urination, defecation, and water and salt access frequency) activities for 48h (3h intervals for a total of eight periods in 24h). The behavioral activities were affected only by periods (p = 0.0001). Feeding peaks was high at 8:00–11:00am (54.2%) and 5:00-8:00pm (54.9%) in compare to ruminating and idling at the same period. Rumination time was intense at night, at 63.7% (2:00–5:00am) and 69.7% (5:00–8:00am). Idling time (49.7%) was long after silage supply. The specific activities were intense during the morning periods. Supply of WPCS relocated up to 24h did not alter the ingestive behavior.

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“…Deitar é um comportamento de manutenção extremamente importante para o descanso e a ruminação dos bovinos. Quase 90% da atividade de ruminação é realizada quando os animais estão deitados, já que nessa posição ocorre um aumento da pressão abdominal, que facilita a ruminação tornando-a mais eficiente (Segabinazzi et al, 2014).…”

Section: Considerando O Modelo Dos "Cincounclassified

O modelo dos “Cinco Domínios” do bem-estar animal aplicado em sistemas intensivos de produção de bovinos, suínos e aves

Braga

Macitelli²,

Lima

et al. 2018

Revista Brasileira De Zoociências

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A demanda por sistemas intensivos de produção é uma realidade mundial com tendência a crescimento nas próximas décadas. No entanto, esses sistemas apresentam limitações em atender as necessidades físicas, comportamentais e psicológicas dos animais, o que pode acarretar no empobrecimento do bem-estar dos mesmos. Apesar do bem-estar animal já ser amplamente definido, sua avaliação dentro da produção animal ainda é pouco aplicada. Dentre suas formas de avaliação, o modelo dos “Cinco Domínios”, proposto por Mellor e Reid (1994), atua como um método sistemático que inclui quatro domínios físicos ou funcionais (Nutrição, Ambiente, Saúde e Comportamento) e um domínio mental (Estado Mental ou Afetivo). Este artigo descreve sucintamente as características do modelo “Cinco Domínios” e exemplifica as possíveis interações entre os domínios do bem-estar animal em três situações reconhecidamente limitantes para bem-estar dos animais de produção: restrição de espaço no confinamento de bovinos, procedimentos dolorosos no manejo de leitões e alta densidade no carregamento e transporte de frangos de corte. Nesse contexto, apesar de não ser possível incluir todos os fatores intervenientes nessa dinâmica, os exemplos apresentados mostram uma visão integrada sobre os riscos de comprometimento do bem-estar dos animais em sistemas intensivos de produção.

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<b>Diurnal ingestive behavior of Holstein calves reared in different systems: feedlot or pasture

Cited by 8 publications

References 13 publications

Feed efficiency and enteric methane production of Nellore cattle in the feedlot and on pasture

Feed efficiency and enteric methane production of Nellore cattle in the feedlot and on pasture

Ingestive behavior of lambs fed relocated and inoculated whole-plant corn silage

O modelo dos “Cinco Domínios” do bem-estar animal aplicado em sistemas intensivos de produção de bovinos, suínos e aves

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