The Response of Sheep To a Thermal Burden Induced by Exercise

1967 ◽  
Vol 3 (2) ◽  
pp. 117-120 ◽  
Author(s):  
G. C. Taneja ◽  
B. M. Fuladi

SummaryTwo groups of mature Marwari wethers were raced at 5 and to miles/hr respectively, for 30 minutes. Rectal temperature, respiratory frequency and pulse rate were measured initially, again immediately after the exercise, and subsequently four times at 20 minute interval. The rise in rectal temperature, respiratory rate and pulse rate in the animals raced at 10 miles/hr was 2·1°F, 86 and 22 counts/min. respectively. The corresponding values in the animals raced at 5 miles/hr were 0·9°F, 72 and 19 counts/min. The rise in rectal temperature due to stress was proportional to the degree of exercise. The magnitude of increase in the respiratory rate tended to be the same under both the treatments, and the trend in pulse rate was similar to that of respiratory rate.

1979 ◽  
Vol 93 (3) ◽  
pp. 587-591 ◽  
Author(s):  
J. P. Mittal ◽  
P. K. Ghosh

SUMMARYDuring summer the morning (08.00 h) to afternoon (15.00 h) increases in rectal temperature, respiratory rate and pulse rate of free grazing Marwari and Magra sheep (rams) of the desert areas of north-western India were compared with those of Corriedale rams, which are being imported into India to improve the productivity of local stock through cross-breeding. Basal (morning) values for all three measurements were similar in the three breeds. While the afternoon values in respect of all three characters were significantly higher than the morning values in all the breeds, the increases were greatest in the Corriedales.


1948 ◽  
Vol 15 (3) ◽  
pp. 219-226 ◽  
Author(s):  
R. F. Riek ◽  
Douglas H. K. Lee

Four grade Jersey cows were exposed for 7 hr. twice a week to each of several atmospheres having dry-bulb temperatures ranging from 85 to 110° F. and absolute humidities ranging from 6 to 16 gr./cu.ft. The following reactions were studied: rectal temperature; pulse rate; respiratory rate; respiratory volume; evaporative loss; calcium, phosphate and erythro-cyte composition of the blood; milk volume and butterfat content; behaviour.Rectal temperature rose to higher values with less ready establishment of equilibrium the hotter the condition, but exceeded 107° F. only in the hottest atmosphere. (Dry-bulb temperature 110° F., absolute humidity 16 gr./cu.ft.)Respiratory rate was similarly and markedly affected. In both cases, humidity had a marked effect as well as temperature, an increment of 0–4 gr./cu.ft. (approx. 4%) in humidity having the same effect as 1° F. rise in air temperature. The highest average respiratory rate was 200/min. Respiratory minute volume rose less than the rate, so that tidal volume was reduced.Pulse rate was essentially unaffected by a rise in temperature but tended to rise somewhat with humidity.Evaporative loss was markedly increased by temperature, much less so by humidity. Increased pulmonary ventilation was inadequate to account for the observed losses, which are attributed to sweat-gland activity.Behavioural changes included some licking, panting, salivation, mild agitation, cessation of rumination and refusal of water. Weakness and staggers did not occur under these conditions.Neither milk nor butterfat production was essentially affected by the exposures. Blood calcium and phosphate levels fell, but the erythrocyte count was unchanged.These findings provide basic data with which subsequent observations under varying conditions can be compared.


1948 ◽  
Vol 15 (3) ◽  
pp. 227-232 ◽  
Author(s):  
R. F. Riek ◽  
Douglas H. K. Lee

Four grade Jersey calves were exposed for 7 hr. twice a week to each of several atmospheres having dry-bulb temperatures ranging from 85 to 110° F. and absolute humidities ranging from 6 to 16 gr./cu.ft. The following reactions were studied: rectal temperature; pulse rate; respiratory rate; respiratory volume; evaporative loss; calcium, phosphate, sugar and erythrocyte composition of the blood; behaviour.Rectal temperatures rose rapidly to a higher level than was shown by cows under similar conditions, but maintained a steady equilibrium thereafter, except under the most severe conditions.Respiratory rate responses resembled those of rectal temperature, the difference from those of cows being even more striking.Humidity had relatively less effect upon the rectal temperature and respiratory rate responses of calves than of cows.Pulse rate and tidal respiratory volumes were relatively unaffected, but minute respiratory volumes rose.Evaporative loss per unit body weight resembled that of cows, except that humidity again had less effect. Pulmonary ventilation was inadequate to account for the observed losses.Behavioural changes resembled those of the cows but weakness of the hind limbs was observed at rectal temperatures above 106° F. Blood calcium, phosphate, sugar and erythrocyte levels were not essentially affected.Possible explanations for the lower thermal tolerance of calves, as compared with cows, are considered.


2021 ◽  
Vol 43 (1) ◽  
pp. 93-99
Author(s):  
A. O. Fadare ◽  
T. Oni ◽  
I. L. Olatunji ◽  
O. A. Mesogboriwon

Rabbit production under tropical conditions is affected by environmental stress mainly from the effect of high ambient temperatures and high humidity, low wind speed and indirect solar radiation. This experiment was conducted to investigate the adaptive potentials of Californian, New Zealand white, Havana black and Palomino brown rabbits to heat stress when raised in humid tropics. A total number of ninety-six rabbits were used. Rectal temperature, respiratory rate, pulse rate and heat stress index were measured in these temperate breeds during rainy and dry season. The results showed that the breed of rabbit had a significant effect (P<0.05) on rectal temperature, respiratory rate, pulse rate and heat stress index. Havana black rabbit had the highest mean rectal temperature value (39.32 ± 0.03°C) followed by Palomino brown (38.97 ± 0.03°C), while the least value was recorded for New Zealand white (38.68 ± 0.02). Respiratory rate values followed the same pattern with that of rectal temperature with higher respiratory rate 69.09 ± 1.05 breaths/min recorded for Havana rabbits. The pulse rate values ranged from 163.23 ± 0.47 - 184.35 ± 0.78 beats/minutes. The highest pulse rate of 184.35 ± 3.78beats/minute was recorded for Havana black. The lowest heat stress index was obtained for New Zealand white followed by California and Palomino Brown while Havana black rabbit had the highest value (1.95± 0.01). The respiratory rate was significantly lower among males as compared to their female counterparts (63.09±0.58 versus 69.54 ± 1.65breaths per minute). The age of the rabbit also significantly affected (P<0.05) the rectal temperature, respiratory rate, pulse rate and heat stress index. 12 weeks old rabbit had the highest mean values while 4 weeks old rabbit had the least values. The heat stress index value obtained during dry season was higher (P< 0.05) than that obtained for rainy season (1.93± 0.02 versus 1.80 ± 0.01). Havana black rabbits and Palomino brown were more prone to heat stress than California and New Zealand white rabbits in tropical environment.


1953 ◽  
Vol 4 (2) ◽  
pp. 224 ◽  
Author(s):  
KW Robinson ◽  
GH Klemm

Four grade Australian Illawarra Shorthorn cows, aged 3 years, were exposed for 7 hr. twice a week to each of several atmospheres having dry-bulb temperatures ranging from 86° to 108.5°F. and absolute humidities ranging from 8 to 16 g./cu. ft. The following reactions were studied: rectal temperature, pulse rate, respiratory rate, evaporative loss, skin temperature, and behaviour. Average 9 a.m. ante-room rectal temperature reading was 101.5 ± 1.29°F. Dry-bulb temperatures of 95°F. and above caused a noticeable rise in rectal temperature and rise in body temperature paralleled rise in humidity. Humidity had a greater effect on the animal than dry-bulb temperature. Pulse rate was essentially unaffected by rise in temperature. Environmental conditions markedly influenced respiratory rate. On exposure to heat, the rate increased considerably before any rise in rectal temperature was apparent. When dry-bulb temperature increased, there was a parallel rise of evaporative loss with rise in respiratory rate. Humidity had little effect on water loss. Comparisons of the reactions of Australian Illawarra Shorthorn cows were made with four Jersey cows of similar age and lactation, exposed to atmospheric conditions similar to those observed by Riek and Lee two years previously. The following points were brought out: (i) The heat tolerance is greater in Jerseys with all combinations of dry- and wet-bulb temperatures. (ii) There is no significant change in pulse rate with breed. (iii) Respiratory rates are similar in the two breeds until the highest temperatures are reached, when that of the Illawarra Shorthorn increases above that of the Jersey. (iv) A greater increase in water loss occurs in the Jersey. (v) There is a larger body temperature-skin temperature gradient in the IIIawarra Shorthorn.


2021 ◽  
Vol 47 (6) ◽  
pp. 18-31
Author(s):  
H. Y. Abbaya ◽  
I. I. Adedibu ◽  
M. Kabir ◽  
A. O. Iyiola-Tunji

The study was conducted to evaluate breed differences in thermoregulatory parameters of four Nigerian indigenous breeds of cattle over two seasons (late rainy and late dry). Data on thermoregulatory parameters (rectal temperature, respiratory rate, pulse rate and Heat Tolerance Coefficient) of eighty (80) cattle, comprising 20 each of Bunaji, Rahaji, Bokoloji and Adamawa Gudali were obtained and subjected to analysis of variance of SAS software. In the pooled breed variation, breed influenced (p<0.05) all the parameters measured. Bunaji recorded the highest rectal temperature (37.92oC) in all the seasons of measurement. Respiratory rate and Heat tolerance coefficient were highest in Bokoloji while the least were in Bunaji and Adamawa Gudali. Season significantly (p<0.05) affected thermoregulatory parameters measured except (p>0.05) rectal temperature. The highest recorded values of respiratory rate (27.85 beat/min), Pulse rate (27.62breaths/min) and HTC (2.19) were in the late dry season. The effect of interaction between breed and season on thermoregulatory parameters significantly affected (p<0.05) all the thermoregulatory parameters measured. It was concluded that Bokoloji and Bunaji breeds of indigenous cattle are more reactive to Heat stress than Rahaji and Adamawa Gudali even though this could vary with seasons of the year as seen in the interaction between breed and season in this study.   L'étude a été menée pour évaluer les différences entre les races dans les paramètres thermorégulateurs de quatre races indigènes de bétail nigérianes sur deux saisons (pluvieuse tardive et sèche tardive). Des données sur les paramètres thermorégulateurs (température rectale, fréquence respiratoire, fréquence du pouls et coefficient de tolérance à la chaleur) de quatre-vingts (80) bovins, comprenant 20 de chacun de Bunaji, Rahaji, Bokoloji et Adamawa Gudali ont été obtenues et soumises à l'analyse de variance du logiciel 'SAS'. Dans la variation de race combinée, la race a influencé (p <0,05) tous les paramètres mesurés. Bunaji a enregistré la température rectale la plus élevée (37,920 ° C) de toutes les saisons de mesure. La fréquence respiratoire et le coefficient de tolérance à la chaleur étaient les plus élevés à Bokoloji tandis que les plus faibles étaient à Bunaji et à Adamawa Gudali. La saison a affecté significativement (p <0,05) les paramètres thermorégulateurs mesurés sauf (p> 0,05) la température rectale. Les valeurs les plus élevées enregistrées de la fréquence respiratoire étaient (27,85 battements / min), la fréquence cardiaque (27,62 respirations / min) et le 'HTC' (2,19) étaient à la fin de la saison sèche.L'effet de l'interaction entre la race et la saison sur les paramètres thermorégulateurs était significativement affecté (p <0,05) tous les paramètres thermorégulateurs mesurés. Il a été conclu que les races Bokoloji et Bunaji de bovins indigènes sont plus réactives au stress thermique que Rahaji et Adamawa Gudali, même si cela peut varier avec les saisons de l'année, comme le montre l'interaction entre la race et la saison dans cette étude.


2021 ◽  
Vol 5 (2) ◽  
pp. 183-190
Author(s):  
Ibrahim Bature ◽  
A. M. Aliyu ◽  
G. Dau

This study was conducted to test the effect of season and breed on thermoregulatory parameters of three Nigerian indigenous breeds of cattle raised in Sudan Savanna Zone. A total number of nine (9) cattle aged between 4-5 years were used for this study. Data were taken for sixteen weeks across two seasons; Cold and Hot Season from three indigenous breed of cattle. Rectal temperature was recorded using digital thermometer, pulse rate was determined using stethoscope and respiratory rate was determined by counting of the respiratory movements of flank area. Data of ambient temperature and relative humidity were recorded on daily basis and temperature humidity index was calculated. All data obtained were subjected to analysis of variance using SAS software. Seasons significantly (P < 0.05) affect all the thermoregulatory parameters of with hot seasons having the highest values. Breed influenced (p<0.05) all the parameters measured. Red Bororo had the highest rectal temperature, while Sokoto has the least rectal temperature. Higher respiratory rate was recorded in SokotoGudali. Respiratory Rate of White Fulani are statistically similar with both Red Bororo and SokotoGudali, but Respiratory Rate of Red Bororo cattle has significantly difference (P<0.05) with SokotoGudali breeds of cattle. Pulse rate differs significantly (P<0.05), SokotoGudali recorded the highest rate and the least rate was observed in White Fulani cattle. It was concluded that Season affect all the thermoregulatory parameters and all the tested parameters were higher during hot season and SokotoGudali react more to thermal stress than Red Bororo and White Fulani


Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 733
Author(s):  
Mirella Lopedote ◽  
Simona Valentini ◽  
Vincenzo Musella ◽  
Jose Manuel Vilar ◽  
Giuseppe Spinella

Physiological changes (pulse rate, respiratory rate and rectal temperature) induced by exercise are usually studied as physical fitness indices. The aim of this study was to investigate how these physiological parameters could be modified in a group of trained working dogs during three different field trials (rubble, search on field, obedience), in order to assess which parameter would be more useful to detect the dog response to exercise. Nine dogs were included in this study. The animals were monitored at rest, immediately before and after the working session. Pulse rate values increased significantly in all the phases compared to rest status. Respiratory rate values increased significantly after the competition, while rectal temperature was significantly increased only after search on rubbles and obedience activities. Reference values for specific competitions need to be stablished in order to promptly identify poor performance or exercise intolerance.


Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 287
Author(s):  
Juan M. Vázquez-García ◽  
Gregorio Álvarez-Fuentes ◽  
Héctor O. Orozco-Gregorio ◽  
Juan C. García-López ◽  
Milagros González-Hernández ◽  
...  

We tested whether maternal energy supplementation during the last third of gestation improves birth weight, neonatal wellbeing, and mother–young bonding. Thirty-six pregnant French Alpine goats were randomly allocated among three nutritional treatments for the last third of pregnancy: (i) Control, fed alfalfa (T-0; n = 12); (ii) alfalfa + 150 g/head daily energy concentrate (T-150; n = 12); (iii) alfalfa + 300 g/head daily energy concentrate (T-300; n = 12). At birth, we collected progeny data on birth weight, birth type, sex, rectal temperature, heart rate, respiratory rate, time to standing, time to udder connection, and time to first feeding. For the dams, we collected data on the duration of labor, time to clean the progeny, and time to allow first suckling. At birth, body weight, rectal temperature, heart rate, and the respiratory rate did not differ among treatments (p > 0.05). In the dams, labor duration was not affected by the treatments (p > 0.05). The T-150 dams were faster to clean the newborn and allow first suckling (p < 0.05). The T-150 progeny were faster to stand and the T-300 progeny were faster to connect to the udder (p < 0.05). We conclude that energy supplementation of the dam during the last third of gestation does not affect the birth weight of the progeny, but enhances the mother–young bonding.


Author(s):  
G. Piccione ◽  
S. Casella ◽  
P. Pennisi ◽  
C. Giannetto ◽  
A. Costa ◽  
...  

Rectal temperature, heart and respiratory rates, and the course of some blood parameters were monitored in calves during perinatal and neonatal periods. The study was carried out on eight Limousine calves. From all subjects, rectal temperature, heart rate, and respiratory rate were measured. Blood samples were taken at the same hour (9am) from the external jugular vein, and then centrifuged and stored until analyses. By means of an UV spectrophotometer, the following blood parameters were assessed for each subject: total protein, total cholesterol, triglycerides, glucose, non-esterified fatty acids (NEFA), urea, creatinine, cholinesterase, lactate dehydrogenase (LDH), hydroxybutirate, glutamate pyruvate transaminases (GPT), glutamate oxalacetate transaminases (GOT), direct and total bilirubin, magnesium, iron, potassium, phosphorus, chloride and sodium. The results showed a significant effect of days of life (P<0.05) only on total cholesterol, creatinine and GOT during the first week of life and a significant effect of days of life on rectal temperature, heart rate, respiratory rate, total cholesterol, NEFA, creatinina, and GOT during the first month of life. A correlation among individual values for postnatal age (days of life) and heart rate in calves during the first month of life was observed. In conclusion, modifications of studied parameters could be attributed to functional development of calves in neonatal period and contribute to the knowledge of adaptation processes in calf during the first week and the first month of life resulting useful for the diagnosis and treatment of any neonatal diseases.


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