Bioacústica como método de avaliação do comportamento em pastejo de novilhas Girolando

Veit, Heinz; Salman, A. K. D.; Cruz, Pedro Gomes da; Souza, E. C. de; Schmitt, Eduardo

doi:10.1590/1678-4162-9432

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Period 2 Grazing behavior was recorded from 14 th to 16 th day of the experimental period by bioacoustics (Veit, Salman, Cruz, Souza, & Schmitt, 2018). Audio data were taken by MP3 recorders tied to the heifer's halters for registering the sounds during the activities of grazing, ruminating, resting, and drinking.…”

Section: Crossovermentioning

confidence: 99%

Thermal comfort and grazing behavior of Girolando heifers in integrated crop-livestock (ICL) and crop-livestock-forest (ICLF) systems

Souza

Salman

Cruz

et al. 2019

Acta Sci. Anim. Sci.

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To compare the integrated crop-livestock-forest (ICLF) and crop-livestock (ICL) systems in relation to thermal comfort and grazing behavior of Girolando heifers, a 2 × 2 crossover trial (two system and two periods) was carried out with eight ¾ Holstein × ¼ Gyr heifers in Xaraés–palisade grass pasture under intermittent stocking with 10 days of occupation period and 20 days of resting. In ICLF, crown cover of eucalyptus planted in rows was 65% at the beginning of the experiment. Animal behavior was assessed through bioacoustics by recording heifers’ sounds for 48 hours. Concomitantly, heifers’ internal temperature (IT,°C) was recorded every 10 min using data logger thermometers adapted to hormone-free intravaginal devices. Air temperature and humidity data were collected by thermohygrometers located in the center of ICLF and ICL for calculating Temperature–Humidity Index (THI). According to THI values, ICLF and ICL did not vary in terms of thermal comfort. However, THI indicated moderate stress (82.26±4.40) during day (06:00 to 17:59h) and mild stress (75.76±4.38) at night (18:00 to 05:59h) in both systems. During day, heifers from ICL had significantly (p < 0.05) higher IT (39.51±0.56oC) than those from ICLF (39.41±0.56oC); the former spent more time grazing and less time drinking water in ICLF (581.35±30.1 and 4.87±1.09 min, respectively) when compared with those from ICL (436.88±28.1 and 10.25±1.09 min, respectively). Therefore, although thermal comfort index did not vary between the systems, under moderate stress, crossbred heifers have lower internal temperatures, resulting in longer diurnal grazing and shorter water drinking time in Eucalyptus-shaded pastures.

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Section: Crossovermentioning

confidence: 99%

Thermal comfort and grazing behavior of Girolando heifers in integrated crop-livestock (ICL) and crop-livestock-forest (ICLF) systems

Souza

Salman

Cruz

et al. 2019

Acta Sci. Anim. Sci.

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“…The automated evaluation of images performed by the algorithm showed greater assertiveness ( Table 2 ) in summer (03/05 and 03/06) and in winter (08/01 and 08/03), presenting a lower and similar assertiveness in autumn and spring. This can be explained by the similar levels of solar radiation in the transition seasons (autumn and winter), which exerts a direct influence on the luminosity of the environment due to the angle of solar declination being similar in both seasons, a situation mentioned in another study, which also reported the difficulty in evaluating images at night due to low light [ 32 ].…”

Section: Resultsmentioning

confidence: 95%

Thermal Environment and Behavior Analysis of Confined Cows in a Compost Barn

Laurindo

Ferraz

Damasceno

et al. 2022

Animals

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The compost barn system has become popular in recent years for providing greater animal well-being and quality of life, favoring productivity and longevity. With the increase in the use of compost barn in dairy farms, studies related to the thermal environment and behavior are of paramount importance to assess the well-being of animals and improve management, if necessary. This work aimed to characterize the thermal environment inside a compost barn during the four seasons of a year and to evaluate the standing and lying behavior of the cows through images. The experiment was carried out during March (summer), June (autumn), August (winter), and November (spring). Dry bulb temperature (tdb, oC), dew point temperature (tdp, oC), and relative humidity (RH, %) data were collected every 10 minutes during all analyzed days, and the temperature and humidity index (THI) was subsequently calculated. In order to analyze the behavior of the cows, filming of the barn interior was carried out during the evaluated days. Subsequently, these films were analyzed visually, and in an automated way to evaluate the behavior of these animals. For the automated analysis, an algorithm was developed using artificial intelligence tools, YOLOv3, so that the evaluation process could be automated and fast. It was observed that during the experimental period, the highest mean values of THI were observed during the afternoon and the autumn. The animals' preference to lie down on the bed for most of the day was verified. It was observed that the algorithm was able to detect cow behavior (lying down or standing). It can be concluded that the behavior of the cows was defined, and the artificial intelligence was successfully applied and can be recommended for such use.

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“…The chemical composition and digestibility of Xaraés palisade grass, as well as the forage allowance in pastures of both systems are shown in Table 1. The forage bulk density (FBD) and sward height of Xaraés palisade grass are shown in Table 2 Grazing behavior was observed from 14 th to 16 th day of the experimental period using acoustic data (Veit et al, 2018). Audios were captured bymP3 recorders (model PX240, Sony® Corporation, Japan) tied to the heifer's halters for continuously registering the grazing sounds during 48h.…”

Section: Methodsmentioning

confidence: 99%

Ingestive behavior of Girolando heifers in integrated crop, livestock (ICL), and forestry (ICLF) systems

Souza

Salman

Cruz

et al. 2021

Arq. Bras. Med. Vet. Zootec.

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Aiming to compare integrated crop, livestock (ICL) and forest (ICLF) systems in relation to ingestive behavior of dairy heifers, a 2 × 2 crossover trial was conducted with two periods and two systems. Eight Girolando (3/4holstein × 1/4 Gyr) heifers were evaluated in pasture of Xaraés palisade grass (Urochloa brizantha ‘Xaraes’ syn Brachiaria brizantha) managed with intermittent stocking. The ICLF systemhad eucalyptus trees planted in tiers with 65% crown cover. Ingestive behavior parameters were obtained using acoustic data collected with mP3 recorders for 48hours. Statistical analysis was performed using the mixed procedure of SAS, and means were compared using the Tukey-Kramer test at 5% significance. The dry mater intake (DMI), number of daily grazing sessions, and the duration of the grazing sessions did not differ (P<0.05) between systems. A higher (P<0.05) bite rate and total daily bites and lower (P<0.05) bite mass was observed in the ICLF system in relation to ICL. Heifers in shaded pasture change their ingestive behavior in comparison with those in full-sun pasture.

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Bioacústica como método de avaliação do comportamento em pastejo de novilhas Girolando

Cited by 3 publications

References 17 publications

Thermal comfort and grazing behavior of Girolando heifers in integrated crop-livestock (ICL) and crop-livestock-forest (ICLF) systems

Thermal comfort and grazing behavior of Girolando heifers in integrated crop-livestock (ICL) and crop-livestock-forest (ICLF) systems

Thermal Environment and Behavior Analysis of Confined Cows in a Compost Barn

Ingestive behavior of Girolando heifers in integrated crop, livestock (ICL), and forestry (ICLF) systems

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