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Mota-Rojas D, Ghezzi MD, Hernández-Ávalos I, Domínguez-Oliva A, Casas-Alvarado A, Lendez PA, Ceriani MC, Wang D. Hypothalamic Neuromodulation of Hypothermia in Domestic Animals. Animals (Basel) 2024; 14:513. [PMID: 38338158 PMCID: PMC10854546 DOI: 10.3390/ani14030513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024] Open
Abstract
When an organism detects decreases in their core body temperature, the hypothalamus, the main thermoregulatory center, triggers compensatory responses. These responses include vasomotor changes to prevent heat loss and physiological mechanisms (e.g., shivering and non-shivering thermogenesis) for heat production. Both types of changes require the participation of peripheral thermoreceptors, afferent signaling to the spinal cord and hypothalamus, and efferent pathways to motor and/or sympathetic neurons. The present review aims to analyze the scientific evidence of the hypothalamic control of hypothermia and the central and peripheral changes that are triggered in domestic animals.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Marcelo Daniel Ghezzi
- Animal Welfare Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), GIB, Tandil 7000, Buenos Aires, Argentina
| | - Ismael Hernández-Ávalos
- Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, FESC, Universidad Nacional Autónoma de México, Cuautitlán 54714, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Pamela Anahí Lendez
- Anatomy Area, Faculty of Veterinary Sciences, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), GIB/CISAPA, Tandil 7000, Buenos Aires, Argentina
| | - María Carolina Ceriani
- Anatomy Area, Faculty of Veterinary Sciences, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), GIB/CISAPA, Tandil 7000, Buenos Aires, Argentina
| | - Dehua Wang
- School of Life Sciences, Shandong University, Qingdao 266237, China
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Habibu B, Aliyu A, Idris SY, Buhari HU, Galadanchi FA, Abdulrahman M, Yaqub LS. Thermoregulation in periparturient rabbit does and their neonatal kits with different litter sizes during West African winter. Anim Biotechnol 2023; 34:4357-4366. [PMID: 36459437 DOI: 10.1080/10495398.2022.2150200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The study evaluated the changes in body temperatures and hematological parameters in periparturient rabbit does and the dynamics of body surface temperature in neonatal rabbit kits during West African winter. The variables were measured in 21 rabbits, comprising periparturient (n = 12) and dry (n = 9) does, and after kindling, the kits were grouped based on litter size, into small (4 kits per litter; n = 24) and large (5-7 kits per litter; n = 34) litter. Results revealed that all body temperatures of the does were lower (p < 0.05) during gestation compared with lactation period or dry does in all hours of the day, and the PCV was significantly higher in lactating than dry does. At birth, small litter kits had higher (p < 0.05) body weight and morning body surface temperature than the large litter kits. The large litter kits showed distinct (p < 0.05) diurnal variation in body surface temperature from birth, while diurnal variation in the small litter kits was absent (P > 0.05) in the first three days after birth. It was concluded that pregnant rabbits and large litter kits may have poor thermoregulation during West African winter, and thus, the need for special protective housing to improve productivity.
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Affiliation(s)
- Buhari Habibu
- Department of Veterinary Physiology, Ahmadu Bello University, Zaria, Nigeria
| | - Adamu Aliyu
- Department of Veterinary Physiology, Ahmadu Bello University, Zaria, Nigeria
| | - Sherif Y Idris
- Department of Veterinary Pathology, Ahmadu Bello University, Zaria, Nigeria
| | - Hajarah U Buhari
- Samaru College of Agriculture, Division of Agricultural Colleges, Ahmadu Bello University, Zaria, Nigeria
| | - Fatima A Galadanchi
- Department of Plant Science and Biotechnology, Federal University Dutsin-Ma, Dutsin-Ma, Nigeria
| | - Musa Abdulrahman
- Swine and Rabbit Research Programme, National Animal Production Research Institute, Ahmadu Bello University, Zaria, Nigeria
| | - Lukman S Yaqub
- Department of Veterinary Physiology, Ahmadu Bello University, Zaria, Nigeria
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Kang H, Zsoldos RR, Sole-Guitart A, Narayan E, Cawdell-Smith AJ, Gaughan JB. Heat stress in horses: a literature review. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:957-973. [PMID: 37060454 DOI: 10.1007/s00484-023-02467-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 06/15/2023]
Abstract
Healthy adult horses can balance accumulation and dissipation of body heat to maintain their body temperature between 37.5 and 38.5 °C, when they are in their thermoneutral zone (5 to 25 °C). However, under some circumstances, such as following strenuous exercise under hot, or hot and humid conditions, the accumulation of body heat exceeds dissipation and horses can suffer from heat stress. Prolonged or severe heat stress can lead to anhidrosis, heat stroke, or brain damage in the horse. To ameliorate the negative effects of high heat load in the body, early detection of heat stress and immediate human intervention is required to reduce the horse's elevated body temperature in a timely manner. Body temperature measurement and deviations from the normal range are used to detect heat stress. Rectal temperature is the most commonly used method to monitor body temperature in horses, but other body temperature monitoring technologies, percutaneous thermal sensing microchips or infrared thermometry, are currently being studied for routine monitoring of the body temperature of horses as a more practical alternative. When heat stress is detected, horses can be cooled down by cool water application, air movement over the horse (e.g., fans), or a combination of these. The early detection of heat stress and the use of the most effective cooling methods is important to improve the welfare of heat stressed horses.
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Affiliation(s)
- Hyungsuk Kang
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, 4343, Australia.
| | - Rebeka R Zsoldos
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, 4343, Australia
| | - Albert Sole-Guitart
- School of Veterinary Science, The University of Queensland, Gatton, QLD, 4343, Australia
| | - Edward Narayan
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, 4343, Australia
| | - A Judith Cawdell-Smith
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, 4343, Australia
| | - John B Gaughan
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, 4343, Australia
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Ake AS, Ayo JO, Aluwong T, Mohammed A. Effect of packing (load carrying) on body temperatures and their circadian rhythms in donkeys (Equus asinus) during the hot-dry season. J Therm Biol 2023; 113:103497. [PMID: 37055114 DOI: 10.1016/j.jtherbio.2023.103497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 12/24/2022] [Accepted: 02/03/2023] [Indexed: 02/12/2023]
Abstract
The study aimed to evaluate the effects of packing (load carrying) on rectal and body surface temperatures and their circadian rhythmicity in donkeys during the hot-dry season. Twenty pack donkeys of both sexes (15 males and 5 non-pregnant females), aged 2-3 years, with average weight of 93 ± 2.7 kg and divided into two groups randomly, served as experimental subjects. Group 1 donkeys (packing + trekking) were subjected to packing in addition to trekking, while group 2 (trekking only) did not carry any load. All the donkeys were trekked, covering a distance of 20 km. The procedure was repeated three times within the week, one day apart. During the experiment, dry-bulb temperature (DBT), relative humidity (RH) and temperature-humidity index (THI), wind speed and topsoil temperature were recorded; and rectal temperature (RT) and body surface temperature (BST) were measured before and immediately after packing. Starting from 16 h after the last packing, circadian rhythms of RT and BST were recorded at 3-h intervals for 27-h period. The RT and BST were measured by digital thermometer and non-contact infrared thermometer, respectively. The DBT and RH, especially after packing (35.83 ± 0.2 °C and 20.00 ± 0.0%, respectively), were outside the thermoneutral zone for donkeys. The RT value (38.63 ± 0.1 °C) in packing + trekking donkeys recorded immediately (15 min) after packing was higher (P < 0.05) than the value obtained in trekking only donkeys (37.27 ± 0.1 °C). The overall mean RT recorded during the continuous 27-h period of measurement, starting from 16 h after the last packing procedure was higher (P < 0.05) in packing + trekking donkeys (36.93 ± 0.2 °C) compared with trekking only donkeys (36.29 ± 0.3 °C). The BSTs recorded in both groups were higher (P < 0.05) immediately after packing when compared with pre-packing values, but insignificant 16-h post-packing. The RT and BST values were generally higher in the photophase and lower during the scotophase in both groups of donkeys during the continuous recordings. The eye temperature was the closest to the RT, followed by scapular temperature, while the coronary band temperature was the farthest. The mesor of RT in packing + trekking donkeys (37.06 ± 0.2 °C) was significantly higher than in donkeys that were trekked only (36.46 ± 0.1 °C). The amplitude of RT in trekking only donkeys (1.20 ± 0.1 °C) was wider (P < 0.05) than that obtained in packing + trekking donkeys (0.80 ± 0.1 °C). The acrophase and bathyphase occurred later in packing + trekking donkeys (18:10 ± 0.3 h and 6:10 ± 0.3 h, respectively), compared to the trekking only donkeys (16:50 ± 0.2 h and 4:50 ± 0.2 h, respectively). In conclusion, exposure to thermally stressful prevailing environmental conditions during packing increased the body temperature responses, especially in packing + trekking donkeys. Packing significantly influenced the circadian rhythms of body temperatures in working donkeys, as evidenced by differences in circadian rhythm parameters in packing + trekking group, compared with trekking only donkeys during the hot-dry season.
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Affiliation(s)
- Ayodele Stephen Ake
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
| | - Joseph Olusegun Ayo
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Tagang Aluwong
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Aliyu Mohammed
- Department of Human Physiology, Faculty of Medicine, Ahmadu Bello University, Zaria, Nigeria
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Ake AS, Ayo JO, Aluwong T, Mohammed A, Minka NS. Melatonin modulates rectal and body surface temperatures and their circadian rhythmicity in donkeys (Equus asinus) subjected to packing during the hot-dry season. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:389-404. [PMID: 36585985 DOI: 10.1007/s00484-022-02418-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 11/26/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
The study aimed to evaluate the effects of melatonin administration on rectal and body surface temperature (RT and BST, respectively) responses and their circadian rhythmicity in donkeys subjected to packing (load carrying) during the hot-dry season. Twenty donkeys were divided into two equal groups randomly: Groups 1 (packing + melatonin) and 2 (packing - melatonin), subjected to packing and both covered 20 km. The RT, BST, and thermal environmental parameters were measured before and after packing. The procedure was carried out three times within the week, one day apart. This was followed 16-h after the last (third) packing procedure by 27-h recording period of all the parameters at 3-h intervals. The RT (37.77 ± 0.1℃) recorded in packing + melatonin donkeys was lower (P < 0.05) than in (packing - melatonin) (38.29 ± 0.1℃) post-packing, while the BSTs in packing + melatonin donkeys were lower than in (packing - melatonin) donkeys, especially the neck (33.07 ± 0.6℃ vs 35.4 ± 0.7℃, respectively) and coronary band (30.58 ± 0.5℃ vs 33.38 ± 0.7℃, respectively) temperatures. In both groups 16-h post-packing, overall mean RT and BST values were not different, except the coronary band temperature (26.61 ± 0.8℃) that was lower (P < 0.05) in packing + melatonin donkeys than (packing - melatonin) donkeys (28.78 ± 1.4℃). Melatonin-exerted biphasic effects on circadian rhythms of RT and BSTs by reducing body temperatures during the photophase and increasing the values during the scotophase in pack donkeys. In conclusion, melatonin may enhance packing output in donkeys during the hot-dry season.
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Affiliation(s)
- Ayodele Stephen Ake
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
| | - Joseph Olusegun Ayo
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Tagang Aluwong
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Aliyu Mohammed
- Department of Human Physiology, Faculty of Basic Medical Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Ndazo Salka Minka
- College of Agriculture and Animal Science, Ahmadu Bello University, P.M.B. 2134, Mando-Kaduna, Nigeria
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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. J Therm Biol 2021; 99:102953. [PMID: 34420610 DOI: 10.1016/j.jtherbio.2021.102953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 03/21/2021] [Accepted: 03/31/2021] [Indexed: 11/22/2022]
Abstract
The aim of the study was to determine the differences in rectal and body surface temperatures and their extent of conformity using digital and infrared thermometers, respectively, in piglets during the hot-dry season in a tropical guinea savannah of Nigeria. Thirty Large White piglets of both sexes, aged 10-14 days, served as the experimental subjects. The rectal and surface body temperatures were recorded concurrently with those of the ambient dry- and wet-bulbs, during the day at 06:00, 09:00, 12:00, 15:00 and 18:00 h (GMT +1). There were significant (P < 0.05) diurnal variations in all body and ambient temperature readings, with the highest values obtained in the afternoon (at 15:00 h GMT + 1). The mean diurnal rectal and body surface temperatures in the piglets at 09:00-18:00 h were significantly higher (P < 0.001) than the corresponding values at 06:00 h. The overall mean rectal temperature (39.00 ± 0.04 °C) was higher (P < 0.01) than body surface temperature recorded for the eye (38.05 ± 0.04 °C), ear (38.10 ± 0.07 °C), head (37.97 ± 0.05 °C), nose (35.68 ± 0.13 °C), scapula (38.16 ± 0.06 °C), thigh (38.00 ± 0.06 °C), back (38.02 ± 0.06 °C) and hoof (36.83 ± 0.07 °C). The largest and smallest mean difference between rectal and body surface temperatures was -3.32 ± 0.12 °C and -0.84 ± 0.06 °C for the temperature of the nose and scapula, respectively. The positive correlation (P < 0.05) between body temperatures (rectal and surface) of the piglets with ambient temperature implied that the later had a tremendous effect on the former. Body surface temperatures at the region of eye, ear, head, nose, scapula, thigh, back and hoof had significantly (P < 0.0001) linear and positive relationships with rectal temperature. In conclusion, the similar diurnal trends, highly significant correlation coefficients and linear relationships between the rectal and body surface temperatures suggest that the later may serve as valid and reliable estimates of the former in piglets.
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Iqbal Yatoo M, Bhat RA, Muheet, Parray OR, Shabir M, Kubrevi SS, Dar RA, Angmo K, Kanwar MS. A study on biological rhythms of Himalayan Pashmina goats. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2019.1571703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mohd. Iqbal Yatoo
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences and Animal Husbandary, Shuhama, Alusteng Srinagar, Jammu and Kashmir, India
| | - Riyaz Ahmad Bhat
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences and Animal Husbandary, Shuhama, Alusteng Srinagar, Jammu and Kashmir, India
| | - Muheet
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences and Animal Husbandary, Shuhama, Alusteng Srinagar, Jammu and Kashmir, India
| | - Oveas Raffiq Parray
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences and Animal Husbandary, Shuhama, Alusteng Srinagar, Jammu and Kashmir, India
| | - Mir Shabir
- Farm Science Centre, Krishi Vigyan Kendra, Nyoma, Changthang, Ladakh, Jammu and Kashmir, India
| | - Syed Shafat Kubrevi
- Farm Science Centre, Krishi Vigyan Kendra, Nyoma, Changthang, Ladakh, Jammu and Kashmir, India
| | - Rukhsar Ahmad Dar
- Farm Science Centre, Krishi Vigyan Kendra, Nyoma, Changthang, Ladakh, Jammu and Kashmir, India
| | - Kunzes Angmo
- Farm Science Centre, Krishi Vigyan Kendra, Nyoma, Changthang, Ladakh, Jammu and Kashmir, India
| | - Maheshwar Singh Kanwar
- Farm Science Centre, Krishi Vigyan Kendra, Nyoma, Changthang, Ladakh, Jammu and Kashmir, India
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Iqbal Yatoo M, Shabir M, Kubrevi SS, Dar RA, Angmo K, Kanwar MS, Bhat RA, Muheet, Parray OR. A study on biological rhythms of Himalayan yaks. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2019.1579883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mohd Iqbal Yatoo
- Faculty of Veterinary Sciences and Animal Husbandary, Division of Veterinary Clinical Complex, Srinagar, India
| | - Mir Shabir
- Farm Science Centre, Krishi Vigyan Kendra, Ladakh, India
| | | | | | - Kunzes Angmo
- Farm Science Centre, Krishi Vigyan Kendra, Ladakh, India
| | | | - Riyaz Ahmad Bhat
- Faculty of Veterinary Sciences and Animal Husbandary, Division of Veterinary Clinical Complex, Srinagar, India
| | - Muheet
- Faculty of Veterinary Sciences and Animal Husbandary, Division of Veterinary Clinical Complex, Srinagar, India
| | - Oveas Raffiq Parray
- Faculty of Veterinary Sciences and Animal Husbandary, Division of Veterinary Clinical Complex, Srinagar, India
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Minka NS, Ayo JO, Hassan FB, Makeri HK. Seasonal patterns of circadian rhythmicity of colonic and body surface temperatures in adult Rouen ducks (Anas platyrhynchos domesticus) under natural light/day cycles in a tropical savannah. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2020.1736414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ndazo Salka Minka
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Joseph Olusegun Ayo
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Fatima Bukar Hassan
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Harold Kuta Makeri
- Department of Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
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Sensitivity, Impact and Consequences of Changes in Respiratory Rate During Thermoregulation in Livestock – A Review. ANNALS OF ANIMAL SCIENCE 2019. [DOI: 10.2478/aoas-2019-0002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Abstract
This review discusses the thermal conservative and heat dissipating roles of one of the most sensitive thermoregulatory variables (respiratory rate) with the aim of enhancing its application in evaluating both cold and heat adaptation. During cold exposure, livestock enhance the economy of body heat through reduction in respiratory rate with the extent of reduction being greater and commencing at relatively higher ambient temperature in poorly adapted phenotypes. This is accompanied by an increase in tidal volume and alveolar oxygen uptake, but a decrease in partial pressure of oxygen. On the other hand, heat stress induces increase in respiratory rate to enhance evaporative heat loss with the magnitude of such increase being greater and commencing at relatively lower ambient temperature in phenotypes that are poorly-adapted to heat. This is accompanied by a decrease in tidal volume and the development of hypocapnia. The increase in respiratory rate is observed to be greater, moderate and lesser in livestock that are mainly (pigs, rabbits and poultry), moderately (sheep, goats and Bos taurus) and less (Zebu cattle) dependent on respiratory evaporative heat loss, respectively. The changes during chronic heat stress may cause acid-base crisis in all livestock, in addition to reduction in eggshell quality in birds; due to marked decrease in partial pressure of carbon dioxide and a compensatory increase in elimination of bicarbonate. Within and between breed variations in sensitivity of respiratory rhythm to both cold and heat stress has shown high applicability in identifying phenotypes that are more susceptible to thermal stress; with some cellular and metabolic changes occurring to protect the animal from the consequences of hypo- or hyper-thermia. The information in this review may provide basis for identification of genes that support or suppress thermoregulation and may also be of great use in animal breeding, genomics and selective thermal stress mitigation to provide maximum protection and comfort to poorly-adapted phenotypes.
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Zakari FO, Ayo JO, Rekwot PI, Kawu MU, Minka NS. Daily rhythms of rectal and body surface temperatures in donkeys during the cold-dry (harmattan) and hot-dry seasons in a tropical savannah. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2018; 62:2231-2243. [PMID: 30374600 DOI: 10.1007/s00484-018-1626-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/20/2018] [Accepted: 09/28/2018] [Indexed: 06/08/2023]
Abstract
The aim of the study was to evaluate daily rhythms of rectal temperature (RT) and body surface temperature (BST) of adult, yearling and foal donkeys during the cold-dry (harmattan) and hot-dry seasons in a tropical savanna. The RTs and BSTs of 30 clinically healthy, free-ranging donkeys were recorded using digital and infrared thermometers. The RT and BST of each donkey and thermal environmental parameters inside the pen were measured bi-hourly from 0600 to 0600 hours (GM + 1) on each experimental day. Application of single cosinor procedure showed that RT and BST exhibited varying levels of daily rhythmicity in both seasons, with values usually higher during the afternoon periods of the photophase of the light/dark cycle. The oscillatory pattern differed with season, with greater amplitude recorded during the cold-dry season than the hot-dry season. The acrophases of the RT and BST were mostly restricted to the photophase of the light/dark cycle in both seasons. The mean values of RT in the adult (37.10 ± 0.10 °C), yearling (37.19 ± 0.10 °C) and foal (37.45 ± 0.11 °C) donkeys were higher (F = 93.41, P < 0.0001) during the hot-dry season than the cold-dry season (35.40 ± 0.05 °C, 35.50 ± 0.04 °C and 36.20 ± 0.05 °C, respectively). In conclusion, seasonal changes influenced significantly the daily rhythmicity of RT and BST in donkeys, kept under natural light/dark cycle.
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Affiliation(s)
- Friday Ocheja Zakari
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
| | - Joseph Olusegun Ayo
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | | | - Mohammed Umar Kawu
- Department of Veterinary Physiology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Ndazo Salka Minka
- College of Agriculture and Animal Science, Department of Animal Health and Husbandry, Division of Agricultural Colleges, Ahmadu Bello University, Mando-Kaduna, Nigeria
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Zakari FO, Ayo JO, Rekwot PI, Kawu MU, Minka NS. Diurnal rhythms of heart and respiratory rates in donkeys of different age groups during the cold-dry and hot-dry seasons in a tropical savannah. Physiol Rep 2018; 6:e13855. [PMID: 30187687 PMCID: PMC6125241 DOI: 10.14814/phy2.13855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 08/02/2018] [Accepted: 08/09/2018] [Indexed: 12/05/2022] Open
Abstract
The aim of this study was to determine the effect of season on diurnal rhythms of heart (HR) and respiratory rates (RespR) in the adult, yearling, and foal donkeys during the cold-dry and hot-dry seasons under natural light/dark cycle. The resting HR and RespR were recorded bihourly for 24 consecutive hours from 06:00 to 06:00 h (GMT +1) in 30, clinically healthy donkeys (10 adults,10 yearlings, and 10 foals). Dry-bulb temperature (DBT), relative humidity (RH), temperature-humidity index (THI) and wet-bulb globe temperature index (WBGT) inside the pen were recorded bihourly from 06:00 to 06:00 h. Values of DBT, THI, and WBGT obtained during the hot-dry season were significantly (P < 0.05) higher than corresponding values recorded during the cold-dry season. Application of single-cosinor procedure showed that HR and RespR exhibited daily rhythmicity in both seasons. The mesors of the HR in adult (41.51 ± 0.34 beats/min [bpm]), yearling (40.80 ± 0.43 bpm), and foal (47.55 ± 0.40 bpm) donkeys during the cold-dry season were significantly (P < 0.01) lower, compared to the corresponding values of 48.4 ± 0.40 bpm, 50.42 ± 0.52 bpm and 58.10 ± 0.50 bpm, respectively during the hot-dry season. The mesors of RespR in adult, yearling, and foal donkeys during the hot-dry season were higher (P < 0.05), when compared to the corresponding values recorded in the cold-dry season. The HR and RespR of foals were significantly (P < 0.05) higher than those of the adult and yearling donkeys. Amplitudes of HR and RespR were higher during the hot-dry season than the cold-dry season. In conclusion, seasonal changes affect diurnal rhythmicity of HR and RespR of adult, yearling, and foal donkeys during the cold-dry and hot-dry seasons. The HR and RespR of donkeys vary with age, with higher values in the foals than the adult and yearling donkeys in both seasons.
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Affiliation(s)
- Friday O. Zakari
- Department of Veterinary PhysiologyFaculty of Veterinary MedicineAhmadu Bello UniversityZariaNigeria
| | - Joseph O. Ayo
- Department of Veterinary PhysiologyFaculty of Veterinary MedicineAhmadu Bello UniversityZariaNigeria
| | - Peter I. Rekwot
- National Animal Production Research InstituteShika‐ZariaNigeria
| | - Muhammed U. Kawu
- Department of Veterinary PhysiologyFaculty of Veterinary MedicineAhmadu Bello UniversityZariaNigeria
| | - Ndazo S. Minka
- Division of Agricultural CollegesCollege of Agriculture and Animal ScienceAhmadu Bello UniversityMando‐KadunaNigeria
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Habibu B, Dzenda T, Ayo J, Yaqub L, Kawu M. Haematological changes and plasma fluid dynamics in livestock during thermal stress, and response to mitigative measures. Livest Sci 2018. [DOI: 10.1016/j.livsci.2018.05.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Aluwong T, Sumanu VO, Ayo JO, Ocheja BO, Zakari FO, Minka NS. Daily rhythms of cloacal temperature in broiler chickens of different age groups administered with zinc gluconate and probiotic during the hot-dry season. Physiol Rep 2018. [PMID: 28637707 PMCID: PMC5492204 DOI: 10.14814/phy2.13314] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
The aim of the experiment was to evaluate effects of zinc gluconate (ZnGlu) and probiotic administration on the daily rhythm of cloacal temperature (tcloacal) in broiler chickens of different age groups during the hot-dry season. One-day-old broiler chicks (n = 60) were divided into groups I-IV of 15 chicks per group, and treated for 35 days: Group I (control) was given deionized water; Group II, ZnGlu (50 mg/kg); Group III, probiotic (4.125 × 106 cfu/100 mL), and Group IV, ZnGlu (50 mg/kg) + probiotic (4.125 × 106 cfu/100 mL). Air dry-bulb temperature (tdb), relative humidity (RH), and temperature-humidity index (THI) inside the pen, and tcloacal of each broiler chick were obtained bihourly over a 24-h period; on days 21, 28, and 35 of the study. Values of tdb (32.10 ± 0.49°C), RH (49.94 ± 1.91%), and THI (38.85 ± 0.42) obtained were outside the thermoneutral zone for broiler chickens, and suggested that the birds were subjected to heat stress. Application of the periodic model showed disruption of daily rhythm of tcloacal in broilers on day 21, which was synchronized by probiotic administration. The administration of probiotics or ZnGlu + probiotics to a greater extent decreased the mesor and amplitude, delayed the acrophases of tcloacal in broilers, especially at day 35, as compared to the controls. Overall, the tcloacal values in broiler chickens administered with probiotic alone (41.25 ± 0.05°C) and ZnGlu + probiotic (41.52 ± 0.05°C) were lower (P < 0.001) than that of the controls (41.94 ± 0.06°C). In conclusion, probiotic alone synchronized tcloacal of the birds at day 21, and, in addition, decreased tcloacal response most, followed by its coadministration with ZnGlu, the antioxidants may be beneficial in modulating daily rhythmicity of tcloacal and alleviating adverse effects of heat stress on broiler chickens during the hot-dry season.
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Affiliation(s)
- Tagang Aluwong
- Department of Veterinary Physiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria
| | - Victory O Sumanu
- Department of Veterinary Physiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria
| | - Joseph O Ayo
- Department of Veterinary Physiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria
| | - Benjamin O Ocheja
- Department of Veterinary Physiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria
| | - Friday O Zakari
- Department of Veterinary Physiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria
| | - Ndazo S Minka
- Division of Agricultural Colleges, College of Agriculture and Animal Science Ahmadu Bello University, Mando-Kaduna, Nigeria
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15
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Daily Rhythms of Blood Parameters in Broiler Chickens Reared under Tropical Climate Conditions. J Circadian Rhythms 2017; 15:5. [PMID: 30210559 PMCID: PMC5624059 DOI: 10.5334/jcr.151] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Several studies carried out on humans and other mammals show that the temporal organisation of haematological parameters in the blood exhibit daily rhythms; however, such studies have been rare in poultry reared under a natural photoperiod. The present study investigated the occurrence of daily rhythms in blood parameters of broiler chickens kept under tropical climatic conditions. Ten 6-7-week-old broiler chickens served as subjects of the study. They were kept in standard individual cages under natural light-dark cycle and given access to feed and water ad libitum. Two milliliters of blood was collected from each bird via intravenous cannulae inserted into the wing vein. The blood samples were collected every 4 h over a 24-h period, starting from 09:00 h on the first day and completed at 09:00 h on the second day. The blood samples were analysed for erythrocyte, total and differential leucocyte counts. A trigonometric statistical model according to the single cosinor procedure was used to describe the periodic parameters and their acrophases, and ANOVA was used to determine significant differences. The results demonstrated the existence of daily rhythms in packed cell volume, haemoglobin, white blood cell, red blood cell, heterophil, lymphocyte, eosinophil and monocyte counts, while total protein displayed no rhythm. The characteristics of the haematological parameters showed that the acrophases were restricted to the light phase of the light/dark cycle, precisely at 09:00 h, except for eosinophil and heterophil counts, which had acrophases at 21:00 h. The amplitudes of the blood parameters varied, with packed cell volume having the greatest amplitude of 4.2 ± 0.5, closely followed by lymphocyte (3.4 ± 0.5) and heterophil (2.3 ± 0.2) counts. In conclusion, the results of the study demonstrated the existence of daily rhythms with diurnal acrophases in blood parameters of broiler chickens kept under natural photoperiods and tropical conditions.
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