animal genetic improvement in tropical area dr. wuttigrai boonkum department of animal science,...
TRANSCRIPT
![Page 1: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/1.jpg)
Animal Genetic Improvement in Tropical
Area
Dr. Wuttigrai BoonkumDr. Wuttigrai Boonkum
Department of Animal Science, Faculty of AgricultureKhon Kaen University
![Page 2: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/2.jpg)
Why is heat stress important ?
The Tropics
HOT, HOTTER Temperatures have risen more in the Arctic than in the tropics.
![Page 3: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/3.jpg)
Why is heat stress important ?
well-beingwell-being
low fertilitylow fertility
diedie
low feed intakelow feed intake
low milk yieldlow milk yield
![Page 4: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/4.jpg)
Economic losses
Economic impacts of heat wave on dairy industry about $1 Billion 2003 economic loss $897 to $1500 million in US
2006 California heat wave kills 16,500 dairy cows statewide>2,000 cattle died in Nebraska during June 2009
2002 to 2007, Summer was the seasons with the highest of dairy deaths (15,773) in Italy
![Page 5: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/5.jpg)
How heat stress occur ?
Cold stress
Heat stress
Thermoneutralzone
Heat
pro
du
ctio
nH
eat
pro
du
ctio
n
Ambient temperatureAmbient temperature
4-24 oC
Lower critical temp.Upper critical temp.
humidity
![Page 6: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/6.jpg)
Heat stress effects
THI > 72 for production and around 68 for reproduction are considered to indicate heat
stress in dairy cattle
THI > 72 for production and around 68 for reproduction are considered to indicate heat
stress in dairy cattle
![Page 7: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/7.jpg)
How heat stress occur ?
panting
sweating
respiration
feed intake
rumination
water intake
![Page 8: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/8.jpg)
How to reduce the effects of heat stress ?
adjustment of housing and facilities
adjustment of housing and facilities
Feed and Feeding management
Feed and Feeding management
Crossbreeding systemCrossbreeding system
x
B.indicus B.taurus
Production traits
![Page 9: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/9.jpg)
How to reduce the effects of heat stress ?
avoiding breeding during hot conditions
avoiding breeding during hot conditions estrus synchronizationestrus synchronization
timed artificial insemination
timed artificial insemination
Fertility traits
![Page 10: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/10.jpg)
Alternative method
Housing and Shadingmanagement
Housing and Shadingmanagement
Feed and Feeding management
Feed and Feeding management
Crossbreeding systemCrossbreeding system
x
B.indicus B.taurus
Temporary/non sustainable
Production traits
avoiding breeding during hot seasonavoiding breeding during hot season estrus synchronizationestrus synchronization
timed artificial insemination
timed artificial insemination
Fertility traits
Temporary/non sustainable
Genetic selectionGenetic
selection
![Page 11: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/11.jpg)
What traits are interest to study?
• Using regular monthly milk records• THI information at the collecting date
Ravagnolo and Misztal, (2000)
• Using days open records
Genetic selectionGenetic
selection
How heat stress affect on genetic ?
How heat stress affect on genetic ?
![Page 12: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/12.jpg)
Heat stress in Thailand
Stress all time
![Page 13: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/13.jpg)
Results: Determination of heat stress threshold
![Page 14: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/14.jpg)
Publication
![Page 15: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/15.jpg)
Results: LSM and HI for DO
summer
winter
![Page 16: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/16.jpg)
ปั�จจ�ยที่��สั�มพั�นธ์�ต่�อการเก�ดความเคร�ยดเน��องจากร�อนในโคนม
• Length of exposure to heat stress• Level of production• Stage of lactation• Cooling management• Feed consumption• Feed offered• Breed• cattle species• Size of the animal
![Page 17: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/17.jpg)
National genetic evaluation under hot-humid climates of Thailand
Department of Animal Science, Faculty of Agriculture, Khon Kaen University
Implications :
Est
imate
d b
reed
ing
valu
e;
EB
V
THI
Threshold pointBest genetic
performance for milk production
under heat stress conditions
![Page 18: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/18.jpg)
Ent1 Ent2
Gen
etic
effec
t Animal 1
Animal 2
Ent1 Ent2
Gen
etic
effec
tAnimal 1
Animal 2
No G x E interaction
Reranking G x E interaction
Ent1 Ent2
Gen
etic
effec
t
Animal 1
Animal 2
Scaling G x E interaction
![Page 19: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/19.jpg)
Conclusions
![Page 20: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/20.jpg)
ค่�า EBV ของพ่�อพ่นธุ์� โค่นมของกรมปศุ�สัตว์ ป� 2553
![Page 21: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/21.jpg)
![Page 22: Animal Genetic Improvement in Tropical Area Dr. Wuttigrai Boonkum Department of Animal Science, Faculty of Agriculture Khon Kaen University](https://reader035.vdocuments.us/reader035/viewer/2022070415/5697bf8d1a28abf838c8c449/html5/thumbnails/22.jpg)