Daily activity patterns of Saanen goats in the semi-arid northeast of Brazil

Paulo, Jória Leilane de Albuquerque; Lopes, Fívia de Araújo

doi:10.1590/s1516-35982014000900002

Cited by 15 publications

(12 citation statements)

References 11 publications

(9 reference statements)

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“…Since the CS group is also under severe nutritional deficiency, they did not have sufficient energy to support the standing process for a long time. Similar finding was established in Saanen goats in the semi-arid northeast of Brazil (Paulo and Lopes, 2014). This shows the importance of optimum level of nutrition for adaptation in goat as sufficient energy levels are needed to support the behavioral responses which will help an animal to adapt to heat stress condition.…”

Section: Discussionsupporting

confidence: 80%

Adaptive capability as indicated by behavioral and physiological responses, plasma HSP70 level, and PBMC HSP70 mRNA expression in Osmanabadi goats subjected to combined (heat and nutritional) stressors

et al. 2015

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A study was conducted to assess the impact of heat and nutritional stress simultaneously on the adaptive capability as indicated by behavioral and physiological responses, plasma heat shock protein 70 (HSP70) level, and peripheral blood mononuclear cells (PBMC) HSP70 gene expression in goats. Twenty-four adult Osmanabadi bucks (average body weight (BW) 16.0 kg) were used in the present study. The bucks were divided into four groups viz., C (n = 6; control), HS (n = 6; heat stress), NS (n = 6; nutritional stress), and CS (n = 6; combined stress). The study was conducted for a period of 45 days. C and HS bucks had ad libitum access to their feed while NS and CS bucks were under restricted feed (30 % intake of C bucks) to induce nutritional stress. The HS and CS bucks were exposed to solar radiation for 6 h a day between 10:00 a.m. and 4:00 p.m. to induce heat stress. The data was analyzed using repeated measures analysis of variance. The standing time differed significantly (P < 0.01) between ad libitum fed groups (C and HS) and restricted feeding groups (NS and CS). The highest (P < 0.01) lying time was recorded in the CS group while the lowest in the C and HS groups. The highest (P < 0.01) drinking frequency was also recorded in the CS group. Water intake recorded was significantly (P < 0.01) higher in both the HS and CS groups. The highest respiration rate (RR), pulse rate (PR), and rectal temperature (RT) during the afternoon were also recorded in the CS group. Further, skin temperature of the head, flank, and scrotum during the afternoon was also higher (P < 0.01) in the CS group. In addition, both plasma HSP70 concentration and PBMC HSP70 messenger RNA (mRNA) transcript expression were also significantly (P < 0.01) higher in the CS group. It can be concluded from this study that when two stressors occur simultaneously, they may have severe impact on adaptive capabilities of Osmanabadi bucks as compared to that would occur individually. Further, the study indicated that lying time, drinking frequency, RR, RT, plasma HSP70, and PBMC HSP70 gene expression may act as ideal biological markers for assessing the impact of CS on adaptive capabilities in bucks.

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Section: Discussionsupporting

confidence: 80%

Adaptive capability as indicated by behavioral and physiological responses, plasma HSP70 level, and PBMC HSP70 mRNA expression in Osmanabadi goats subjected to combined (heat and nutritional) stressors

et al. 2015

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“…During the day, the ST was lower at 8:00 h than at 12:00 h and 16:00 h during summer (Marai et al 2000). The ST increased by 0.22 °C in animals per extra degree of ambient temperature exposure (Paulo and Lopes 2014). Similar result was also reported by Renaudeau et al (2007) in pig with 0.22 °C per degree of ambient temperature.…”

Section: Skin Temperaturesupporting

confidence: 89%

“…In mammal, skin is the important pathway for heat exchange between the body and the surrounding environment. The ST was measured in different parts of body (back, flank and forehead) using a skin surface thermocouple probe connected to a microprocessor-based handheld thermometer (Paulo and Lopes 2014). The ST of an animal varies based on the quantum of sun rays to which the different body parts are exposed.…”

Section: Skin Temperaturementioning

confidence: 99%

Physiological adaptability of livestock to heat stress: an updated review

Rashamol

Sejian

Bagath

et al. 2018

JABB

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Climate change associated heat stress was established to be the crucial factor, which negatively influences animal production. The animals possess several adaptive mechanisms which are helpful for their survival in harsh environmental conditions, but while doing so their productive performances are compromised. Among the various mechanisms, which helps to maintain homeostasis in animals, Physiological adaptability was considered one of the primary response mechanisms by which the heat stressed animals survive the heat stress. This review is therefore an attempt to provide the audience an updated review on the subject to signify the importance of physiological responses in animals and their role in surviving the stressful environment. Respiration rate (RR), pulse rate (PR), rectal temperature (RT), sweating rate (SR) and skin temperature (ST) are the cardinal physiological variables which helps to maintain the heat balance and homeostasis in the stressed animals. Among the various physiological variables, RR, RT and ST were established to be ideal indicators for quantifying heat stress in several farm animals. Therefore, these variables can be effectively used to assess the severity of heat stress in livestock. Although these variables are considered significant in establishing the heat stress impact in animals, a wide genetic variation was also established in these response mechanisms. Further, variations in physiological adaptability were also established between indigenous, cross bred and pure bred animals. The indigenous livestock breeds were tipped to be exhibiting less physiological variability as compared to their counterparts. These discussions vividly indicate the importance of studying in detail the physiological adaptive mechanisms in different farm animals and these efforts can help the farming community to identify the suitable agroclimatic zone specific livestock breeds which can go in long way to help to ensure climate resilient livestock production.

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“…These results have a direct relation with the natural behavior of goats, where the animals use more time if fed during the day, quickly ingesting the maximum amount of food (Paulo & Lopes, 2014) (Figure 1).…”

Section: Resultsmentioning

confidence: 62%

Feeding behavior of goats, castrated and uncastrated, supplemented with Vitamin E

et al. 2019

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The objective of this study was to evaluate the ethological and feeding behavior of male goats under the influence of climatic conditions, castration and supplementation with Vitamin E. The responses were analyzed by a behavior test factorial design with 2 x 2 (not spayed or neutered animal, the presence or absence of supplementation with Vitamin E), with 6 replicates. The time of feed intake, rumination, other activities, entertainment, salt intake frequency, water, urination and defecation were evaluated. The factors did not have any effect on the animal’s condition, or the vitamin supplementation (P>0.05) on rumination, other activities, defecation frequency and water consumption. Vitamin E intake had no effect on food and entertainment (P>0.05). There was a significant condition of the animal (P<0.05) on the salt intake and urination, for uncastrated animals without Vitamin E. Periods of the day (P<0.05) affected feed intake in all treatments. There was a significant difference (P<0.05) for rumination time. Vitamin E had little influence on ethological behavior, and castration is directly linked to the behavioral parameters of goats.

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Daily activity patterns of Saanen goats in the semi-arid northeast of Brazil

Cited by 15 publications

References 11 publications

Adaptive capability as indicated by behavioral and physiological responses, plasma HSP70 level, and PBMC HSP70 mRNA expression in Osmanabadi goats subjected to combined (heat and nutritional) stressors

Adaptive capability as indicated by behavioral and physiological responses, plasma HSP70 level, and PBMC HSP70 mRNA expression in Osmanabadi goats subjected to combined (heat and nutritional) stressors

Physiological adaptability of livestock to heat stress: an updated review

Feeding behavior of goats, castrated and uncastrated, supplemented with Vitamin E

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