Maternal care and selection for low mortality affect post-stress corticosterone and peripheral serotonin in laying hens

2009 ◽  
Vol 98 (5) ◽  
pp. 519-523 ◽  
Author(s):  
T. Bas Rodenburg ◽  
J. Elizabeth Bolhuis ◽  
Rudie E. Koopmanschap ◽  
Esther D. Ellen ◽  
Eddy Decuypere
Keyword(s):  
Maternal Care ◽  
Laying Hens ◽  
Selection For ◽  
Post Stress

scholarly journals Hypothalamic vasotocin and tyrosine hydroxylase levels following maternal care and selection for low mortality in laying hens

2014 ◽  
Vol 10 (1) ◽  
pp. 167 ◽  
Author(s):  
Susie E Hewlett ◽  
Elly C Zeinstra ◽  
Frank JCM van Eerdenburg ◽  
TB Rodenburg ◽  
Peter JS van Kooten ◽  
...  
Keyword(s):  
Tyrosine Hydroxylase ◽  
Maternal Care ◽  
Laying Hens ◽  
Selection For

Selection for egg shell strength in laying hens using shell membrane characteristics

1996 ◽  
Vol 37 (4) ◽  
pp. 757-763 ◽  
Author(s):  
K. Johansson ◽  
J. Örberg ◽  
A.‐B. Carlgren ◽  
M. Wilhelmson
Keyword(s):  
Laying Hens ◽  
Shell Membrane ◽  
Selection For ◽  
Egg Shell

scholarly journals Stable eusociality via maternal manipulation when resistance is costless

2015 ◽  
Author(s):  
Mauricio González-Forero
Keyword(s):  
Mathematical Model ◽  
Resource Allocation ◽  
Maternal Care ◽  
Honest Signaling ◽  
Queen Pheromones ◽  
Honest Signals ◽  
Long Run ◽  
Maternal Manipulation ◽  
Selection For ◽  
Eusocial Species

In many eusocial species, queens use pheromones to influence offspring to express worker phenotypes. While evidence suggests that queen pheromones are honest signals of the queen's reproductive health, here I show that queen's honest signaling can result from ancestral maternal manipulation. I develop a mathematical model to study the coevolution of maternal manipulation, offspring resistance to manipulation, and maternal resource allocation. I assume that (1) maternal manipulation causes offspring to be workers against offspring's interests; (2) offspring can resist at no direct cost, as is thought to be the case with pheromonal manipulation; and (3) the mother chooses how much resource to allocate to fertility and maternal care. In the coevolution of these traits, I find that maternal care decreases, thereby increasing the benefit that offspring obtain from help, which in the long run eliminates selection for resistance. Consequently, ancestral maternal manipulation yields stable eusociality despite costless resistance. Additionally, ancestral manipulation in the long run becomes honest signaling that induces offspring to help. These results indicate that both eusociality and its commonly associated queen honest signaling can be likely to originate from ancestral manipulation.

SELECTION FOR SOME PRODUCTIVE TRAITS IN NORFA LAYING HENS

2019 ◽  
Vol 3 (3) ◽  
pp. 59-67
Author(s):  
F.H. Abdou ◽  
M.E. Soltan ◽  
A.A. Enab ◽  
E. A. Abou Sada
Keyword(s):  
Laying Hens ◽  
Selection For ◽  
Productive Traits

Divergent selection for yolk cholesterol in laying hens

1977 ◽  
Vol 18 (2) ◽  
pp. 179-188 ◽  
Author(s):  
H. L. Marks ◽  
K. W. Washburn
Keyword(s):  
Laying Hens ◽  
Divergent Selection ◽  
Selection For ◽  
Yolk Cholesterol

scholarly journals Two-Way Selection for Serum Alkaline Phosphatase in Laying Hens

1972 ◽  
Vol 51 (4) ◽  
pp. 1428-1437 ◽  
Author(s):  
M.R. McClung ◽  
H.M. Hyre ◽  
W.G. Martin
Keyword(s):  
Alkaline Phosphatase ◽  
Laying Hens ◽  
Serum Alkaline Phosphatase ◽  
Selection For

scholarly journals SELECTION FOR SOME PRODUCTIVE TRAITS IN NORFA LAYING HENS

2019 ◽  
Vol 3 (3) ◽  
pp. 59-67
Author(s):  
F.H. Abdou ◽  
M.E. Soltan ◽  
A.A. Enab ◽  
E. A. Abou Sada
Keyword(s):  
Laying Hens ◽  
Selection For ◽  
Productive Traits
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