Effect of shade materials on microclimate of crossbred calves during summer

Kamal, Reena; Dutt, Triveni; Patel, B. H. M.; Dey, Abir; Chandran, P C; Barari, S. K.; Chakrabarti, Asit; Bhusan, Bharat

doi:10.14202/vetworld.2014.776-783

Cited by 14 publications

(10 citation statements)

References 7 publications

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“…In practice, greenhouse shade nets (80–85% shade rate) installed at the height of 2 m are one way of providing shade (Coleman et al ., 1996; Spain and Spiers, 1996; Kovács et al ., 2019). Thatch shading or well-grown trees can also be effective (Kamal et al ., 2014). A built roof is a bigger investment for dairy operations; however, it offers protection from precipitation and build-up of radiant heat, while maintaining adequate airflow.…”

Section: Techniques To Decrease Heat Load In Calvesmentioning

confidence: 99%

Heat stress in dairy calves from birth to weaning

Bakony

Jurkovich

2020

Journal of Dairy Research

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This Research Reflection collects current knowledge on the effects of heat stress in dairy calves. Chapters cover the concept of foetal programming, animal-based and environmental indicators of heat stress in the postnatal period, and methods of heat stress abatement. Conclusions for further research about economic efficiency, research methodology and an integrated approach of pre- and postnatal heat stress are also proposed.

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Section: Techniques To Decrease Heat Load In Calvesmentioning

confidence: 99%

Heat stress in dairy calves from birth to weaning

Bakony

Jurkovich

2020

Journal of Dairy Research

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“…The type of roof material generally decides the microclimate under the covered area (Kamal et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Behavioural, biochemical and hormonal responses of heat-stressed crossbred calves to different shade materials

Kamal

Dutt

Patel

et al. 2015

Journal of Applied Animal Research

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An attempt was made to study the effect of different shade materials on physiological, behavioural, biochemical and hormonal responses in crossbred Vrindavani calves during the summer seasons in the Cattle and Buffalo Farm of Indian veterinary Research Institute, Izatnagar, India. During experiment, 28 crossbred calves were divided into four groups: thatch shading roof (T1), agro-net shading roof -60% light diffusion (T2), asbestos with canvas shading roof (T3) and well-grown tree (T4). The daily macroand microclimate data were recorded at 0900 and 1400 h. The data for each ongoing behavioural activity were recorded by closed circuit television consecutively for three days for each animal in each group from 1000 to 1700 h. Blood was also collected at 0, 15, 30, 45, 60, 75 and 90 days of the experimental period for estimation of different biochemical parameters. The microclimate, that is, maximum and minimum temperatures, relative humidity and temperature humidity index of the roof, was lower in the T2 group. There was significantly more (P < .05) time spent in shade structure by the T2 group as compared to other groups. Among the behaviour, feeding, rumination, resting and sleeping activities were more in the T2 group, whereas standing, moving, drinking, time spent near water tank and abnormal behaviour (cross-sucking, licking) were more in T3 and T4. Among the blood parameters, haemoglobin was significantly higher (P < .05) while, Serum Glutamic Oxaloacetic Transaminase and Alkaline Phosphatase were significantly lower in the T2 group. ARTICLE HISTORY

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“…Temperature of the open paddock in the control shed was 10-15°C higher than the treatment, indicating that the use of green shade in the open paddock reduced temperature of the floor as it cuts down the solar radiation. Kamal et al (2014) Means showing different superscripts in lower case letters in a column differ significantly (P≤0.05).…”

Section: Resultsmentioning

confidence: 99%

Effect of heat ameliorative measures on microclimate, physiological, blood biochemical parameters and milk production in lactating Surti buffaloes

Chaudhary

Singh

et al. 2019

Indian J of Anim Sci

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The present investigation was carried out to evaluate the effect of heat ameliorative measures (fans, foggers, green agro shadenet) on physiological, haematological, biochemical and milk production parameters in Surti buffaloes. Lactating Surti buffaloes (36) were equally divided into two groups and kept in two sheds. Group I animals were housed in a shed without any modification while Group II animals housed in a shed fitted with fans and foggers inside the shed and roof top white washed with microfine lime and open paddock was covered with green shade net and foggers were fitted. There were significant differences in the THI values of both inside and outside of the sheds at majority of periods during the hot-dry season. The floor and roof temperature of control shed at almost all-time intervals was significantly higher than the floor temperature of treatment shed. Significant difference in rectal temperature was observed at 14 and 28 days while respiration rate was significantly lower in animals of treatment shed. In treatment group, total erythrocyte count and haematocrit was significantly low at day 21 and mean platelet volume was significantly high at day 42. Significantly high levels of cholesterol, chloride and sodium at day 21 and glucose, protein, triglyceride, GSH, TAS and sodium at day 42 were observed in treatment group. Weekly milk yield (kg) during hot-dry season was significantly higher for treatment group than control group at 3rd, 4th and 5th weeks of the experiment. Evening milk yield of treatment group was significantly higher than the control and the cumulative milk yield (for 42 days) was also significantly higher for treatment group than control group (180.08 vs.150.80 kg). It can be concluded that microclimate modifications help in reducing heat stress and has beneficial effect on physiological responses, blood biochemical parameters and total milk production in lactating Surti buffaloes during hot dry season.

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Effect of shade materials on microclimate of crossbred calves during summer

Cited by 14 publications

References 7 publications

Heat stress in dairy calves from birth to weaning

Heat stress in dairy calves from birth to weaning

Behavioural, biochemical and hormonal responses of heat-stressed crossbred calves to different shade materials

Effect of heat ameliorative measures on microclimate, physiological, blood biochemical parameters and milk production in lactating Surti buffaloes

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