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Survivability, immunity, growth and production traits in indigenous and White Leghorn breeds of chicken

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Title Survivability, immunity, growth and production traits in indigenous and White Leghorn breeds of chicken
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Creator Santosh Haunshi, A. K. Burramsetty, T. R. Kannaki and U. Rajkumar
 
Subject Chicken; Innate immunity; natural antibody; specific antibody; survivability
 
Description Not Available
1. The survivability, innate and adaptive immunity, growth and production traits up to 72 weeks of
age were determined in Ghagus, Nicobari (unimproved indigenous) and White Leghorn (WLH)
breeds and the study investigated links between innate and adaptive immunity and survivability
and production traits.
2. At 20 and 40 weeks of age, there was a significant effect of breed on innate immunity assessed by
measuring titres of natural antibody (NAb) binding to rabbit red blood cells (RRBC) and adaptive
immunity assessed by measuring specific antibody titre (SpAb) to Newcastle disease virus.
3. Highest survivability was in WLH (91.6%) followed by Nicobari (87.1%) and Ghagus (82.9%)
breeds. Growth traits at different ages were higher (P< 0.001) in Ghagus followed by WLH and
Nicobari breeds. Egg production up to 72 weeks was higher (P < 0.001) in WLH followed by Nicobari
and Ghagus breeds, whereas egg weight at different ages was higher (P < 0.001) in WLH than
Ghagus and Nicobari breeds.
4. NAb titres measured at 20 weeks were significantly (P = 0.002) associated with the survivability of
hens during 20 to 72 weeks of age. Breed-wise analysis showed a significant (P = 0.019) association
between NAb titres at 20 weeks and survivability in the Ghagus breed. Furthermore, NAb titres at 20
weeks were higher in hens which survived to 72 weeks compared with those that died (P = 0.002).
5. Measuring NAb titres to RRBC is quick, economical and simple. This method has potential to be
used in a breeding programme to increase survivability of laying hens.
SERB
 
Date 2019-12-04T05:23:03Z
2019-12-04T05:23:03Z
2019-11-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/26866
 
Language English
 
Relation Not Available;
 
Publisher Taylor and Francis