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USDA study finds middle-aged turkeys most likely to catch bird flu
Thursday, July 30, 2015 1:22 p.m. CDT
WASHINGTON D.C. (WTAQ) - We're learning more about which turkey farms are most likely to catch the avian flu.
A USDA follow up study says 12 to 16-week-old turkeys are most likely to get the H5 virus.
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About half the infected turkeys were at least midway through their normal life cycle of 12 to 22 weeks -- so extra vigilance may be necessary for middle-aged birds and older.
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Director Steve Olson of the Minnesota Turkey Growers Association says it's clear that younger birds are not getting sick.
http://wsau.com/news/articles/2015/j...atch-bird-flu/
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Animal and Plant Health Inspection Service (APHIS) Releases Highly Pathogenic Avian Influenza (HPAI) Epidemiology Report
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The updated report can be read here, http://www.aphis.usda.gov/animal_hea...ly-15-2015.pdf
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https://flutrackers.com/forum/forum/...miology-report
Excerpt:
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Bird Age
None of the case farms (that provided bird age information) had birds less than 4 weeks old (Table 4). The median ages at the time of the outbreak were 11, 14, and 30.5 weeks for hen farms, tom farms, and breeder farms, respectively. Almost half of infected tom farms had 13- to 16-week-old birds when the outbreak occurred, while half of hen farms had 9- to 12-week-old birds. The incidence of disease was slightly skewed toward older toms (Figure 2). The apparent age predilection may indicate changes in bird susceptibility at different ages, or could be related to changes in traffic and farm activities at different bird ages.
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Thursday, July 30, 2015 1:22 p.m. CDT
WASHINGTON D.C. (WTAQ) - We're learning more about which turkey farms are most likely to catch the avian flu.
A USDA follow up study says 12 to 16-week-old turkeys are most likely to get the H5 virus.
...
About half the infected turkeys were at least midway through their normal life cycle of 12 to 22 weeks -- so extra vigilance may be necessary for middle-aged birds and older.
...
Director Steve Olson of the Minnesota Turkey Growers Association says it's clear that younger birds are not getting sick.
http://wsau.com/news/articles/2015/j...atch-bird-flu/
---------------------------------------------------------------------------------------------------------------------------------------
Animal and Plant Health Inspection Service (APHIS) Releases Highly Pathogenic Avian Influenza (HPAI) Epidemiology Report
...
The updated report can be read here, http://www.aphis.usda.gov/animal_hea...ly-15-2015.pdf
...
https://flutrackers.com/forum/forum/...miology-report
Excerpt:
...
Bird Age
None of the case farms (that provided bird age information) had birds less than 4 weeks old (Table 4). The median ages at the time of the outbreak were 11, 14, and 30.5 weeks for hen farms, tom farms, and breeder farms, respectively. Almost half of infected tom farms had 13- to 16-week-old birds when the outbreak occurred, while half of hen farms had 9- to 12-week-old birds. The incidence of disease was slightly skewed toward older toms (Figure 2). The apparent age predilection may indicate changes in bird susceptibility at different ages, or could be related to changes in traffic and farm activities at different bird ages.
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