The effects of wearing encapsulating protective clothes, workload, and environment temperature on heat stress

PERBANDINGAN SUHU LINGKUNGAN DAN PRODUKTIVITAS TERNAK SAPI PERAH MELALUI PENDEKATAAN STOCHASTIC FRONTIER (Study Kasus di Peternakan Rakyat KUTT Suka Makmur)

Jurnal Sains Terapan ◽

10.29244/jstsv.6.1.16-24 ◽

2016 ◽

Vol 6 (1) ◽

pp. 16-24

Author(s):

Dela Harini ◽

Bagus Priyo Purwanto ◽

Suryahadi

Keyword(s):

Heat Stress ◽

Dairy Cattle ◽

Environmental Temperature ◽

Stochastic Frontier ◽

Herd Size ◽

Descriptive Statistics ◽

Environment Temperature ◽

The Impact ◽

Small Holder

This study observed environmental temperature and rearing management of dairy cattlein KUTT Suka Makmur. This research was aimed to evaluate comparison of environment temperature, productivity, and the technic inefficiency dairy cattle in lowland and highland. Datacollected from 40 respondents in lowland and 40 respondents in highland regions. Data analyzed using descriptive statistics and stochastic frontier production. The results showed that temperatures in the lolands were higher than that of highland, at the range of 24-27 oC, socattle experiencing heat stress, the impact was cattle consumedless feed. In contrast, the highlands temperature relatively low, at range of22-24 oC and produce more milk than that of lowland. The significant variabel of stochastic frontier was herd size about -0.2655 (p<0.10) and -0.2180 (p<0.02) in lowland and highland respectively. Increasing the number of cattle in small holder farms was not efficiencs, due to the increasing in a number of forages and consentrat for the cattle.

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Effects of compound organic acid calcium on growth performance, hepatic antioxidation and intestinal barrier of male broilers under heat stress

Asian-Australasian Journal of Animal Sciences ◽

10.5713/ajas.19.0274 ◽

2020 ◽

Vol 33 (7) ◽

pp. 1156-1166

Author(s):

Junna He ◽

Lianxiang Ma ◽

Jialing Qiu ◽

Xintao Lu ◽

Chuanchuan Hou ◽

...

Keyword(s):

Heat Stress ◽

Organic Acid ◽

Growth Performance ◽

Thermal Environment ◽

Average Daily Gain ◽

Intestinal Barrier ◽

Intestinal Barrier Function ◽

Control Group ◽

Available Phosphorus ◽

Environment Temperature

Objective: The aim of this study was to evaluate the effects of compound organic acid calcium (COAC) on growth performance, hepatic antioxidant status and intestinal barrier of male broilers under high ambient temperature (32.7°C).Methods: Nine hundred healthy one-d-old Cobb-500 male broiler chicks were randomly assigned into three groups with six replicates of 50 birds each. A basal diet supplemented with 0% (control), 0.4% and 0.8% COAC, respectively were fed to birds for 6 weeks. All treatments were under high ambient indoor temperature of 32.7°C, and had a constant calcium and available phosphorus ratio.Results: The results showed that, compared with control, the average daily gain of broilers in 0.4% and 0.8% was significantly increased and the ratio of feed to gain in in 0.4% and 0.8% was significantly decreased at 1 to 21, 22 to 42 and 1 to 42 days of age (p<0.05). Compared with control, 0.8% COAC slightly decreased (p = 0.093) the content of malondialdehyde in liver at 42 days of age while 0.4% COAC significantly decreased (p<0.05) the activity of alkaline phosphatase. Furthermore, 0.4% COAC significantly enhanced the intestinal barrier function via increasing jejunal and ileal ocln transcription, promoting jejunal mucin 2 transcription at 42 days of age (p<0.05), and decreasing jejunal toll-like receptor 2 (TLR-2) and ileal TLR-15, inducible nitric oxide synthase compared with control group (p<0.05). Whereas, no significant differences on the transcription of interleukin-1β in jejunum and ileum were observed among three treatments (p>0.05). Overall, heat stress caused by high natural environment temperature may induce the damage to hepatic antioxidation and intestinal barrier.Conclusion: Dietary inclusion of COAC can improve the tolerance of broilers to thermal environment through the modification of antioxidative parameters in liver and the mRNA expression of genes in intestinal barrier, resulting in an optimal inclusion level of 0.4%.

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PATH ANALYSIS OF PERCEPTION OF HEAT PRESSURE, PULSE RATE, BODY TEMPERATURE AGAINST HEAT STRAIN EVENTS IN WORKERS IN BREM PRODUCTION INDUSTRY

Journal Of Vocational Health Studies ◽

10.20473/jvhs.v5.i2.2021.119-125 ◽

2021 ◽

Vol 5 (2) ◽

pp. 119

Author(s):

Siska Wahyu Handayani, Sri Hernawati, Farida Wahyu Ningtyas

Keyword(s):

Heat Stress ◽

Body Temperature ◽

Pulse Rate ◽

Pressure Pulse ◽

Heat Strain ◽

Cross Sectional ◽

Environment Temperature ◽

Work Duration ◽

Stress Influences ◽

Production Industry

Background: Brem industry workers can be at risk to get into heat strain in their workplace. The cases are caused by heat pressure, pulse rate, and body temperature. Purpose: To analyze the heat pressure, pulse rate, and body temperature that can influence the heat strain simultaneously to the workers of the Brem industry in the Kaliabu region, Madiun city, Indonesia. Method: The research is characteristic analytic observation quantitative with the cross-sectional approach in which a sample is 157 respondents with a total amount are 266 workers. The analysis test path use SPSS AMOS 23 accessories to analyze the data. Result: The results of the research are that heat stress does not influence the pulse rate (estimate 0, 02). Heat stress influences body temperature (estimate 0, 12). Heat stress does not influence the heat strain directly (estimate 0, 011). Pulse rate does not influence the heat strain (estimate 0, 08) and body temperature influences the heat strain (estimate 0, 04). Conclusion: Heat stress does not influence the heat strain directly but it influences the variety of body temperature so it needs to pay attention to the work duration time well. (7 hours working and 1 hour for taking rest). Also, it needed an arrangement of the room and adding the system of ventilation to get down the heat from the environment so heat strain can be restrained by checking the environment temperature and body temperature workers routine.

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