Establishing a Network to Reduce Heat Stress

in Livestock

Brad ScharfBrad ScharfDivision of Animal Sciences Division of Animal Sciences

University of MissouriUniversity of MissouriColumbia, MissouriColumbia, Missouri

ANNUAL INDUSTRY LOSSES DUE TO HEAT STRESS IN THE US

$897,000,000$897,000,000 DairyDairy

$369,000,000 $369,000,000 BeefBeef

$299,000,000 Swine $299,000,000 Swine

THE PROBLEM

Incidence of thermal extremes also rising

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 10010 54 54 54 54 53 53 53 53 52 52 52 52 52 51 51 51 51 50 50 5012 56 56 56 56 55 55 55 55 55 55 55 55 54 54 54 54 54 54 54 5414 58 58 58 58 58 58 57 57 57 57 57 57 57 57 57 57 57 57 57 5716 59 59 59 60 60 60 60 60 60 60 60 60 60 60 60 60 61 61 61 6118 61 61 61 62 62 62 62 62 62 63 63 63 63 63 64 64 64 64 64 6420 63 63 63 64 64 64 64 65 65 65 66 66 66 66 67 67 67 67 68 6822 64 65 65 66 66 66 67 67 67 68 68 69 69 69 70 70 70 71 71 7224 66 67 67 68 68 69 69 70 70 70 71 71 72 72 73 73 74 74 75 7526 68 69 69 70 70 71 71 72 73 73 74 74 75 75 76 77 77 78 78 7928 70 70 71 72 72 73 74 74 75 76 76 77 78 78 79 80 80 81 82 8230 71 72 73 74 74 75 76 77 78 78 79 80 81 81 82 83 84 84 85 8632 73 74 75 76 77 77 78 79 80 81 82 83 84 84 85 86 87 88 89 9034 75 76 77 78 79 80 81 82 83 84 84 85 86 87 88 89 90 91 92 9336 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 93 94 95 96 9738 78 79 81 82 83 84 85 86 88 89 90 91 92 93 95 96 97 98 99 10040 80 81 82 84 85 86 88 89 90 91 93 94 95 96 98 99 100 101 103 10442 82 83 84 86 87 89 90 91 93 94 95 97 98 99 101 102 104 105 106 10844 83 85 86 88 89 91 92 94 95 97 98 99 101 102 104 105 107 108 110 11146 85 87 88 90 91 93 94 96 98 99 101 102 104 105 107 109 110 112 113 115

LIVESTOCK WEATHER SAFETY INDEX

Relative Humidity, %

Te

mp

era

ture

, oC

Normal: 74 Alert: 75-78 Danger: 79-83 Emergency: 84

Air Temperature (C)

20 25 30 35 40

Bo

dy

Te

mp

era

ture

(C

)

38.0

38.5

39.0

39.5

40.0

40.5

41.0 Beef

Air Temperature (C)

20 25 30 35 40

Re

spir

atio

n R

ate

(b

pm

)

70

80

90

100

110

120

130

140

150

160 Beef

Develop a network

of information exchange

using state-of-art technology

to reduce the impact of

heat stress

THE IDEA

PRODUCER

RESEARCHERS

SMARTPHONE APP

ENVIRONMENT

ANIMAL

THERMALAIDTHERMALAID

STUDENTS

RESEARCH & EDUCATION

PRODUCERS

APP DEVELOPMENT

Device Attachments

THERMALNETTHERMALNET

THE APP

www.thermalnet.missouri.edu/thermalaid

Websitewww.thermalnet.missouri.edu

• General informationGeneral information• TipsTips• Ask the expertAsk the expert

INTEGRATIVE, NOVEL NETWORKS TO TACKLE COMPLEX PROBLEMS

FUTURE DEVELOPMENT

Additional Livestock > Pets > Humans+ Research Tool

Attachments to Automate the App•On Farm weather data transmitter•Body temperature transmitter

Panting Score

Current Transmitters

Development

Development

Development

Development

Temperature Humidity I ndex Heat Stress Category Below 75 No Stress

75-79 Alert

80-89 Danger

Above 90 Emergency

Temperature Humidity I ndex Heat Stress Category Below 72 No Stress

72-79 Alert

80-89 Danger

Above 90 Emergency

Beef

Dairy

Cattle THI Categories

Predicted Breathing Rate Heat Stress Category Less than 90 breaths per minute No Stress From 90 - 110 breaths per minute Alert From 110 - 130 breaths per minute Danger Above 130 breaths per minute Emergency

Predicted Breathing Rate Heat Stress Category Less than 75 breaths per minute No Stress From 75 - 85 breaths per minute Alert From 85 - 120 breaths per minute Danger Above 120 breaths per minute Emergency

Cattle Respiration Rate CategoriesBeef

Dairy

THI Formula = Air Temp-(0.55-0.55*Relative humidity/100)*(Air Temp – 58.8)THI Formula = Air Temp-(0.55-0.55*Relative humidity/100)*(Air Temp – 58.8)