Avaliação de intervalos de tempo para registro do comportamento ingestivo de bovinos confinados individualmente

Aldrighi, Julian; Branco, Renata Helena; Cyrillo, J. N. S. G.; Magnani, Elaine; Nascimento, Claudionor F.; Mercadante, Maria Eugênia Zerlotti

doi:10.17523/bia.2018.v75.e1412

Cited by 2 publications

(4 citation statements)

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“…In the present study, the number of periods was not considered. However, it is important to note that the observation interval adopted when evaluating the ingestive behavior of herbivores should be considered with caution if the aim is evaluating periods and time per period since studies with sheep (Fischer et al, 2000;Carvalho et al, 2007;Marques et al, 2012) and cattle (R. R. Silva et al, 2005;Aldrighi et al, 2018) showed that intervals greater than 5 minutes underestimate the quantification of periods and time by period. The choice of observation interval affects the perception of the observer concerning the heterogeneity of a system, and the use of an inappropriate scale can compromise the interpretation of results (Dutilleul, 1997).…”

Section: Resultsmentioning

confidence: 99%

“…The choice of the appropriate time interval for recording activities in the evaluation of ingestive behavior has been widely discussed since it allows the observation of the largest number of animals and does not compromise the accuracy of measuring the time spent in behavioral activities (Aldrighi et al, 2018). Considering that the diet used (Mazza et al, 2020;Herzog et al, 2021;Valença et al, 2022) and the production system (Poli et al, 2009) in which the animals are inserted can modify the ingestive behavior of sheep, it is suggested that these factors may change the observation interval to be adopted.…”

Section: Introductionmentioning

confidence: 99%

“…IdlenessAnimal not moving, standing, or lying down without performing any activity Water intake Animal in front of the drinking fountain, with its head down, ingesting water Salt intake Animal in front of the salt troughs, head down or not, licking itOther activitiesLying or standing animal licking its body, scratching itself, or in agonistic interactions Source: Adapted fromAldrighi et al (2018).…”

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confidence: 99%

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Influence of pasture, silvopastoral, and feedlot production systems and the recording interval of behavioral activities on the ingestive behavior of lambs

Bettencourt

Silva

Menezes

et al. 2022

Semina: Ciênc. Agrár.

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The evaluation of the ingestive behavior of ruminant animals is important to identify the animal response to the particularities of the different production systems. However, the five-minute evaluation technique requires personnel, making it difficult to adhere to farms and research in more complex pastoral systems. Thus, this study objected to evaluating the influence of pasture, silvopastoral, and feedlot production systems on the ingestive behavior of lambs and to defining the behavior recording interval in each of the systems. Twenty-four lambs were distributed in an experimental design in split plots. The plots were the production systems (pasture without shading - PS, silvopastoral - SS, and feedlot systems - FS) and the subplots were the behavior observation intervals (5, 10, 15, and 20 min.). In the pasture without shading and silvopastoral systems, the lambs were kept on Aruana grass (Megathyrsus maximus) pasture and supplemented with concentrate at 1.5% of body weight per day, on a dry matter (DM) basis. In the feedlot system, the lambs received a diet consisting of 200 g kg DM-1 of annual ryegrass hay (Lolium multiflorum Lam.) and 800 g kg DM-1 of concentrate. There was no interaction (P > 0.05) between the production system and the recording interval of behavioral activities. The time spent on food intake was higher (P < 0.05) in the pasture (533 min d-1) and silvopastoral (513 min d-1) systems than in the feedlot (225 min d-1). In contrast, for water intake, time was higher (P < 0.05) in the feedlot (21 min d-1) and lower in the silvopastoral system (5 min d-1). There was no difference (P > 0.05) between the systems for rumination and idle activities, of which daily averages were 378 and 587 min d-1, respectively. There was also no difference (P > 0.05) between the observation intervals for feed, water, rumination, and idleness activities. Lambs in pasture-based systems spend more time feeding, and feedlot lambs spend more time ingesting water. Feedlot lambs ruminate as much as grazing animals when fed hay, even though hay represents only 20% of the total diet. The recording interval of behavioral activities in these production systems can be up to 20 minutes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Influence of pasture, silvopastoral, and feedlot production systems and the recording interval of behavioral activities on the ingestive behavior of lambs

Bettencourt

Silva

Menezes

et al. 2022

Semina: Ciênc. Agrár.

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“…The ingestive behavior was assessed individually every 10 minutes (Aldrighi et al, 2018) for 12 hours, starting at 7 am. The evaluations were carried out on the first day of each experimental period to avoid changes in the behavior of the animals caused by other collection management.…”

Section: Ingestive Behaviormentioning

confidence: 99%

Assessing the impact of essential oil blends as antibiotic alternatives on nutritional and metabolic parameters in non-forage-based diet-fed Nellore steers

et al. 2023

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Essential oils (EO) are antimicrobials with the potential to replace conventional ones in ruminant diets. Despite the advantage of the EO serving markets that prohibit antibiotics in animal nutrition, the results that prove their effectiveness vary with the type of EO, dose, diet, etc. This study aimed to assess the effects of a blend of essential oil, based on cinnamaldehyde and diallyl disulfide, associated or not with antibiotics on nutritional and metabolic parameters for feedlot Nellore steers fed non-forage-based diet. Five Nellore steers were distributed in a 5×5 simple Latin square design. The treatments assessed were a basal no-roughage diet with the inclusion of monensin (MON), monensin + virginiamycin (MV), monensin + blend of EO (MEO25), monensin + blend of EO (MEO35), and a blend of essential oil (EO). Feed, orts, feces, ruminal fluid, blood, and urine samples were utilized to assess the intake, digestibility, ruminal pH, ruminal NH3, nitrogen balance, microbial nitrogen synthesis, fecal cortisol metabolites, blood glucose, and D and L-lactate. No difference (P > 0.05) has been observed in additives in intake, nutrient digestibility, and ingestive behavior. There was a trend (P = 0.0553) of the effect of additives on ruminal pH, and the MV presented the highest value. No difference (P > 0.05) for the ruminal NH3, microbial N synthesis, and nitrogen balance concentration was also verified. The blood glucose and blood lactate concentration were not affected (P > 0.05) by additives. The blend of essential oils based on cinnamaldehyde and diallyl disulfide could then be indicated in replacement or association with antibiotics in a non-forage-based diet for Nellore steers.

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Avaliação de intervalos de tempo para registro do comportamento ingestivo de bovinos confinados individualmente

Cited by 2 publications

References 1 publication

Influence of pasture, silvopastoral, and feedlot production systems and the recording interval of behavioral activities on the ingestive behavior of lambs

Influence of pasture, silvopastoral, and feedlot production systems and the recording interval of behavioral activities on the ingestive behavior of lambs

Assessing the impact of essential oil blends as antibiotic alternatives on nutritional and metabolic parameters in non-forage-based diet-fed Nellore steers

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