Comparison of diurnal rectal and body surface temperatures in large white piglets during the hot-dry season in a tropical Guinea savannah

Zakari, Friday Ocheja; Akefe, Isaac Oluwatobi; Uchendu, Chidiebere

doi:10.1016/j.jtherbio.2021.102953

Cited by 4 publications

(4 citation statements)

References 46 publications

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“…From our data, the skin surface temperature, at the base of the ear, and rectal temperature of neonatal piglets in the postpartum period appear, at most, only moderately correlated. This is at odds with previous research (reviewed by [19]) that suggested the base of the ear is one of the best thermal windows, with a high correlation between surface and rectal temperatures. A thermal window is a skin/surface area which is well perfused by blood and, as a result, is a good "window" into the core body temperature [23].…”

Section: Discussioncontrasting

confidence: 79%

“…This includes removal from the crate environment and restraint, resulting in exposure to different environmental temperatures, handling stress, and potential loss of suckling time. An alternative method published recently in the literature is the use of infrared cameras for the monitoring of piglet thermal status [18][19][20]. Automatic systems generating a whole image analysis would be useful to monitor piglet thermal changes, but handheld machines are more practical and easily employed in practice.…”

Section: Introductionmentioning

confidence: 99%

“…Automatic systems generating a whole image analysis would be useful to monitor piglet thermal changes, but handheld machines are more practical and easily employed in practice. There is evidence that rectal and surface temperatures show similar diurnal trends, and that surface temperatures interact with piglet age and growth rate [19]. It has been suggested that the ocular, auricular, and nasal regions are the most commonly monitored to determine changes in heat [6]; however, many of these also require manipulation of the piglet to obtain clear images.…”

Section: Introductionmentioning

confidence: 99%

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Associations between Surface and Rectal Temperature Profiles of Low-Birth-Weight Piglets

Tucker,

Petrovski,

Craig

et al. 2023

Animals

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The use of infrared cameras to record surface temperature has shown some promise in older pigs, but neonatal piglets are metabolically less mature and experience rapid temperature changes during their first 24 h. The present experiment aimed to compare rectal temperature to surface temperature at the base of the ear, measured using an infrared camera, for piglets of different birth weights. During farrowing, 48 multiparous sows were monitored, and rectal and surface temperatures were recorded for their lower-birth-weight (≤1.2 kg) piglets within 3 min of birth and at 0.25, 0.50, 0.75, 1, 1.25, 1.50, 2, 3, 4, and 24 h. Piglet birth weights were assigned to one of three categories (BWC): BWC1 (≤0.80 kg), BWC2 (0.81 to 1.10 kg), or BWC3 (1.11 to 1.20 kg). Piglet rectal temperatures at 1.25 h after birth were assigned to one of three categories: RC1 (≤32.0 °C), RC2 (32.1 to 35.0 °C), or RC3 (≥35.1 °C). Surface temperatures showed a similar recovery pattern to rectal temperatures in the first 24 h across all piglet birth weights, although large and variable differences seen in the current study militate against surface temperature being an appropriate replacement for neonatal rectal temperature for use in production.

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Section: Discussioncontrasting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Associations between Surface and Rectal Temperature Profiles of Low-Birth-Weight Piglets

Tucker,

Petrovski,

Craig

et al. 2023

Animals

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“…According to Zaake (2018), rectal temperature is one of the key heat stress parameters, which was found to be associated with chest girth in pigs. Achieving optimal development of thermoregulation is a challenge that piglets must confront to successfully adapt to extrauterine life (Villanueva-García et al, 2021), especially in the hot-dry season in a tropical guinea savannah of Nigeria (Zakari et al, 2021). The high positive correlations observed in the present study suggest that selection for a trait may lead to a correlated response in the other trait.…”

Section: Discussionsupporting

confidence: 47%

Multivariate analysis of body weight, morphometric and thermo-physiological traits of indigenous pigs under tropical conditions

Yakubu¹,

Durven

Hagan

2022

GABJ

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The study aimed at describing objectively the interdependence among the morphological and heat tolerance traits of Nigerian indigenous pigs and to predict body weight from conformation traits. Data on body weight, eight linear body measurements (BL, CG, CD, WH, RH, EL, SL and TL) and three thermo-physiological parameters were measured on 150 randomly selected pigs of three growth stages (piglets, growers and finishers) from February to December, 2020. The animals were managed in an extensive system in Plateau State, north central Nigeria. General linear model was used to study growth stage and sex effects including their interaction. Multivariate principal component analysis was used for the size, shape and heat tolerance determination while the animals were classified using canonical discriminant analysis. The stepwise regression was used for body weight prediction. The results showed that finishers had significantly higher (P<0.05) body weight, body length, chest girth, chest depth, withers height, rump height, ear length, snout length and tail length, followed by growers while the least values were recorded in piglets. Pulse rate was not significantly different (P>0.05) between piglets and finishers, although the latter had higher respiratory rate (39.48±0.53 vs. 39.90±0.53 vs. 36.77±0.75). However, rectal temperature was similar (P>0.05) among the three pig categories. With the exception of tail length, sexual dimorphism was observed in all the morphometric traits with higher values recorded for males. However, the three thermo-physiological traits were not affected by sex (P>0.05). BW was highly and positively correlated with most biometric traits (r = 0.80-0.93, 0.66-0.80 and 0.83-0.93; P<0.01 for piglets, growers and finishers, respectively). Three principal components (PC1, PC2 and PC3) were extracted for optimal balance of the animals. Withers height, ear length and body weight were found to be the most discriminating variables to separate the pig categories. Classification results showed that 100% of piglets, 96.7% of growers and 96.7% of finishers were correctly assigned to their distinct populations. The present Information could be exploited in devising appropriate management and breeding programs for tropically adapted pigs in Nigeria.

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Relationships of infrared thermography temperature with core temperature in goat

Sun,

Liu,

Jiang

2024

Trop Anim Health Prod

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Comparison of diurnal rectal and body surface temperatures in large white piglets during the hot-dry season in a tropical Guinea savannah

Cited by 4 publications

References 46 publications

Associations between Surface and Rectal Temperature Profiles of Low-Birth-Weight Piglets

Associations between Surface and Rectal Temperature Profiles of Low-Birth-Weight Piglets

Multivariate analysis of body weight, morphometric and thermo-physiological traits of indigenous pigs under tropical conditions

Relationships of infrared thermography temperature with core temperature in goat

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