scholarly journals SHORT TERM ACUTE HEAT STRESS IN RABBITS: FUNCTIONAL, METABOLIC AND IMMUNOLOGICAL EFFECTS

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
  Amici A. ◽  
Franci O. ◽  
Mastroiacono P. ◽  
Merendino N ◽  
Nardini M. Tomassi G.
Keyword(s):  
Heat Stress ◽  
Short Term ◽  
Acute Heat Stress ◽  
Immunological Effects

scholarly journals Effects of Feed Removal during Acute Heat Stress on the Cytokine Response and Short-Term Growth Performance in Finishing Pigs

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 205
Author(s):  
Kouassi R. Kpodo ◽  
Alan W. Duttlinger ◽  
Jacob M. Maskal ◽  
Betty R. McConn ◽  
Jay S. Johnson
Keyword(s):  
Heat Stress ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Temperature Treatment ◽  
Cytokine Response ◽  
Finishing Pigs ◽  
Short Term ◽  
Study Objective ◽  
Acute Heat Stress ◽  
Interleukin 1Α

The study objective was to evaluate the effects of feed removal during acute heat stress (HS) on the cytokine response and its short-term effect on growth performance in finishing pigs. Thirty-two pigs (93.29 ± 3.14 kg initial body weight; 50% barrows and 50% gilts) were subjected to thermoneutral (TN; 23.47 ± 0.10 °C; n = 16 pigs) or HS (cycling of 25 to 36 °C; n = 16 pigs) conditions for 24 h. Within each temperature treatment, 50% of the pigs were provided with feed (AF; n = 8 pigs/temperature treatment) and 50% of the pigs had no feed access (NF; n = 8 pigs/temperature treatment). Following the 24 h temperature and feeding treatment (TF) period, all pigs had ad libitum access to feed and water and were maintained under TN conditions for 6 d. During the first 12 h of the TF period, gastrointestinal (TGI) and skin (Tsk) temperatures were recorded every 30 min. Serum cytokines were determined at 0, 4, 8, 12, and 24 h during the TF period and on Days 3 and 6 of the post-TF period. Average daily gain (ADG) and average daily feed intake were measured on Days 1, 3, and 6 of the post-TF period. Behavioral data were collected from Days 1 to 6 of the post-TF period. Heat stress increased (p < 0.02) the TGI and Tsk. During the post-TF period, interleukin-1α was greater (p < 0.01) in HS + NF compared to HS + AF and TN + NF pigs. From Days 1 to 2 of the post-TF period, the ADG was reduced (p < 0.01) in TN + AF compared to HS + AF, HS + NF, and TN + NF pigs. In conclusion, feed removal during an acute HS challenge did not reduce the cytokine response or improve short-term growth performance in finishing pigs.

scholarly journals Effects of Short-term Acute Heat Stress on Physiological Responses and Heat Shock Proteins of Hanwoo Steer (Korean Cattle)

2019 ◽  
Vol 34 (3) ◽  
pp. 173-182
Author(s):  
Youl-Chang Baek ◽  
Minseok Kim ◽  
Jin-Young Jeong ◽  
Young-Kyoon Oh ◽  
Sung-Dae Lee ◽  
...  
Keyword(s):  
Heat Stress ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Physiological Responses ◽  
Short Term ◽  
Korean Cattle ◽  
Acute Heat Stress ◽  
Shock Proteins

scholarly journals Impact of vitamin C on concentrations of thyroid stimulating hormone and thyroid hormones in lambs under short-term acute heat stress

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Arash Omidi ◽  
Masoumeh Kheirie ◽  
Hadi Sarir
Keyword(s):  
Heat Stress ◽  
Vitamin C ◽  
Thyroid Hormones ◽  
Antioxidant Properties ◽  
Thyroid Stimulating Hormone ◽  
Free Thyroxine ◽  
Control Group ◽  
Short Term ◽  
Acute Heat Stress ◽  
Humidity Index

The present study evaluated the effect of vitamin C on alteration in thyroid hormones induced by short-term acute heat stress. Eight male lambs were divided into two groups of 4 animals each. Both groups were placed in an environment with hyper-acute heat stress based on the temperature – humidity index (THI). Groups I and II were injected intramuscularly normal saline and vitamin C (20 mg/kg), respectively, for the first five consecutive days of the experiment. All lambs were fed ad libitum. Blood samples were collected from both groups on days one, two, four, six and eight. Thyroxine and free thyroxine numerically increased (91.03 vs. 70.78 nmol L-1, P=0.080 and 29.8 vs. 24.8 pmol L-1, P=0.080; respectively) in heat stressed lambs supplemented with vitamin C compared to control group. Respiration rates and heart rates were elevated until day five of the experiment and then decreased. Mechanism for increasing the levels of thyroxine and free thyroxine by vitamin C is not well known. However, it may occur in part because of vitamin C antioxidant properties. The present study revealed that vitamin C might ameliorate the adverse effect of heat stress in lambs.

scholarly journals The impact of short-term acute heat stress on the rumen microbiome of Hanwoo steers

2020 ◽  
Vol 62 (2) ◽  
pp. 208-217
Author(s):  
Youl Chang Baek ◽  
Hyuck Choi ◽  
Jin-Young Jeong ◽  
Sung Dae Lee ◽  
Min Ji Kim ◽  
...  
Keyword(s):  
Heat Stress ◽  
Short Term ◽  
Rumen Microbiome ◽  
Acute Heat Stress ◽  
The Impact

scholarly journals Standardized short‐term acute heat stress assays resolve historical differences in coral thermotolerance across microhabitat reef sites

2020 ◽  
Vol 26 (8) ◽  
pp. 4328-4343 ◽  
Author(s):  
Christian R. Voolstra ◽  
Carol Buitrago‐López ◽  
Gabriela Perna ◽  
Anny Cárdenas ◽  
Benjamin C. C. Hume ◽  
...  
Keyword(s):  
Heat Stress ◽  
Short Term ◽  
Acute Heat Stress

Repeated thermal conditioning during the neonatal period affects behavioral and physiological responses to acute heat stress in chicks

2020 ◽  
Vol 94 ◽  
pp. 102759
Author(s):  
Yoshimitsu Ouchi ◽  
Hiroshi Tanizawa ◽  
Jun-ichi Shiraishi ◽  
John F. Cockrem ◽  
Vishwajit S. Chowdhury ◽  
...  
Keyword(s):  
Heat Stress ◽  
Neonatal Period ◽  
Physiological Responses ◽  
Acute Heat Stress

scholarly journals Evaluation of physiological and molecular responses to acute heat stress in two chicken breeds

animal ◽  
2020 ◽  
pp. 100106
Author(s):  
P. Adu-Asiamah ◽  
Y. Zhang ◽  
K. Amoah ◽  
Q.Y. Leng ◽  
J.H. Zheng ◽  
...  
Keyword(s):  
Heat Stress ◽  
Molecular Responses ◽  
Acute Heat Stress ◽  
Chicken Breeds

scholarly journals Characterization of Short-Term Heat Stress in Holstein Dairy Cows Using Altered Indicators of Metabolomics, Blood Parameters, Milk MicroRNA-216 and Characteristics

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Jang-Hoon Jo ◽  
Jalil Ghassemi Nejad ◽  
Dong-Qiao Peng ◽  
Hye-Ran Kim ◽  
Sang-Ho Kim ◽  
...  
Keyword(s):  
Heat Stress ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Blood Parameters ◽  
Negative Effects ◽  
Short Term ◽  
Lactating Cows ◽  
Humidity Index ◽  
Holstein Dairy Cows

This study aims to characterize the influence of short-term heat stress (HS; 4 day) in early lactating Holstein dairy cows, in terms of triggering blood metabolomics and parameters, milk yield and composition, and milk microRNA expression. Eight cows (milk yield = 30 ± 1.5 kg/day, parity = 1.09 ± 0.05) were homogeneously housed in environmentally controlled chambers, assigned into two groups with respect to the temperature humidity index (THI) at two distinct levels: approximately ~71 (low-temperature, low-humidity; LTLH) and ~86 (high-temperature, high-humidity; HTHH). Average feed intake (FI) dropped about 10 kg in the HTHH group, compared with the LTLH group (p = 0.001), whereas water intake was only numerically higher (p = 0.183) in the HTHH group than in the LTLH group. Physiological parameters, including rectal temperature (p = 0.001) and heart rate (p = 0.038), were significantly higher in the HTHH group than in the LTLH group. Plasma cortisol and haptoglobin were higher (p < 0.05) in the HTHH group, compared to the LTLH group. Milk yield, milk fat yield, 3.5% fat-corrected milk (FCM), and energy-corrected milk (ECM) were lower (p < 0.05) in the HTHH group than in the LTLH group. Higher relative expression of milk miRNA-216 was observed in the HTHH group (p < 0.05). Valine, isoleucine, methionine, phenylalanine, tyrosine, tryptophan, lactic acid, 3-phenylpropionic acid, 1,5-anhydro-D-sorbitol, myo-inositol, and urea were decreased (p < 0.05). These results suggest that early lactating cows are more vulnerable to short-term (4 day) high THI levels—that is, HTHH conditions—compared with LTLH, considering the enormous negative effects observed in measured blood metabolomics and parameters, milk yield and compositions, and milk miRNA-216 expression.

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