Influence of Naked Neck Gene on Laying Performance and Some Hematological Parameters of Dwarfing Hens

2007 ◽  
Vol 6 (11) ◽  
pp. 807-813 ◽  
Author(s):  
A. Galal ◽  
A.M.H. Ahmed ◽  
U. M. Ali ◽  
H. H. Younis
Keyword(s):  
Hematological Parameters ◽  
Naked Neck ◽  
Laying Performance ◽  
Naked Neck Gene

scholarly journals Effect of Introducing the Naked Neck Gene in a Line Selected for Low Residual Feed Consumption on Performance in Temperate or Subtropical Environments

2008 ◽  
Vol 87 (7) ◽  
pp. 1320-1327 ◽  
Author(s):  
C.F. Chen ◽  
N.Z. Huang ◽  
D. Gourichon ◽  
Y.P. Lee ◽  
M. Tixier-Boichard ◽  
...  
Keyword(s):  
Feed Consumption ◽  
Naked Neck ◽  
Naked Neck Gene

scholarly journals Laying performance, immune response and antioxidant properties of hens segregating for naked neck and frizzle genes under low ambient temperature

2019 ◽  
Vol 64 (No. 5) ◽  
pp. 216-225 ◽  
Author(s):  
Moataz Fathi ◽  
Ibrahim Al-Homidan ◽  
Gamal Rayan ◽  
Salah El-Safty ◽  
Tarek Ebeid ◽  
...  
Keyword(s):  
Immune Response ◽  
Ambient Temperature ◽  
Shell Thickness ◽  
Laying Hens ◽  
Antioxidant Properties ◽  
Egg Mass ◽  
Naked Neck ◽  
Laying Performance ◽  
Total Antioxidant ◽  
Low Ambient Temperature

Major genes could be introgressed into laying hens to attenuate heat stress. However, under cold and/or moderate ambient temperature, these genes might possess different behaviour. The main objective of this study was to evaluate laying performance, immune response, and antioxidant status of native laying hens segregating for naked neck (Na) and frizzle (F) genes under low ambient temperature. Five genotypes were studied: homozygous naked neck (NaNaff), heterozygous naked neck (Nanaff), homozygous frizzle (nanaFF), heterozygous frizzle (nanaFf), and normally feathered (nanaff). The hens were raised under temperature range 22.2–16.7°C. No adverse effect due to ambient temperature was detected in laying performance for naked neck genotypes. Significant decrease in egg weight was recorded in nanaFF genotype compared to the other genotypes leading to significant decrease in egg mass. Significant improvement in shell thickness was associated with Na and F genes. NaNaff genotype had a significantly higher eggshell strength compared to nanaff. Furthermore, Na and F genes improved cellular mediated immune responsiveness, whereas this improvement did not extend to humoral immunity. Birds carrying F gene in homozygous state had a higher total antioxidant activity compared to the remaining genotypes. It could be concluded that the presence of Na and F genes in laying hens raised under low ambient temperature significantly increased shell thickness and, in turn, improved shell strength. Moreover, they greatly enhanced cellular immunity, particularly in heterozygous naked neck status.

scholarly journals Cytogenetic Study of Early Chicken Embryos: Effect of Naked Neck Gene and High Ambient Temperature

1995 ◽  
Vol 74 (6) ◽  
pp. 903-909 ◽  
Author(s):  
K. LADJALI ◽  
M. TIXIER-BOICHARD ◽  
A. BORDAS ◽  
P. MÉRAT
Keyword(s):  
Ambient Temperature ◽  
Cytogenetic Study ◽  
High Ambient Temperature ◽  
Naked Neck ◽  
Chicken Embryos ◽  
Naked Neck Gene

scholarly journals Naked-neck and frizzled feather fowls are high performance laying local chicken in Nigeria

2020 ◽  
Vol 44 (5) ◽  
pp. 9-13
Author(s):  
R. J. Nosike ◽  
J. C. Ezike ◽  
C. N. Odukwe ◽  
O. F. Nwakpu ◽  
C. N. Okocha ◽  
...  
Keyword(s):  
High Performance ◽  
Egg Production ◽  
The Other ◽  
Production Data ◽  
Naked Neck ◽  
Mean Values ◽  
Laying Performance ◽  
Egg Number ◽  
Local Chicken ◽  
Better Than

The study was conducted to investigate the effect of genotype on the laying performance of Nigerian local chicken. The experiment was carried out using 99 local chicken of the three genotypes, comprising of 90 hens and 9 cocks (33 frizzle feather, 33 naked-neck feather and 33 normal feathered). Eggs were collected from the different genotypes for 8 weeks. The laying performance traits were egg number, hen-housed (%) and hen-day (%) egg production. Data collected were subjected to ANOVA in a completely randomised design. The hen-day egg production showed significant differences (P<0.05) in all the weeks. Naked-neck genotype performed better in terms of hen-day egg production than the other two genotypes and had highest values in week 1 (27.14±0.01), week 5 (27.60±0.09), week 7 (34.53±1.13) andweek 8 (16.30±0.03). Therewere significant differences (P<0.05) in all the weeks for hen-housed egg production and naked-neck also performed better than the frizzled and normal feather apart from week 2, 3 and 6. The naked-neck genotype had highest mean values in week 1, 4, 5, 7 and 8 with 27.18±0.06, 25.70±0.02, 19.33±0.67, 24.08±0.22 and 11.39±0.03 respectively for hen-housed egg production. The naked-neck had significantly (P<0.05) higher values for egg number when compared with frizzle and normal feathered genotypes. The values ranged between 5.67±0.67 to 2.00±0.10 (naked-neck), 6.33±0.33 to 2.67±0.67 (frizzle) and 3.33±0.33 to 1.33±0.33 (normal). It is therefore, reasonable to incorporate the naked-neck and frizzled feather genotypes of local chicken in producing locally-adapted commercial eggs

Effect of honey on performance and hematological parameters of broilers and Nigerian local chickens

2021 ◽  
Vol 1 (2) ◽  
pp. 018-022
Author(s):  
Yeigba B Japhet ◽  
Gbefa V Oyingebarakumo
Keyword(s):  
Blood Cell ◽  
White Blood Cell ◽  
Niger Delta ◽  
Hematological Parameters ◽  
Haematological Parameters ◽  
Naked Neck ◽  
Significant Difference ◽  
And Control ◽  
Positive Effect ◽  
Local Chickens

A six week feeding trail was conducted to investigate the effect of honey on the performance and haematological parameters of broilers and Nigerian Local Chickens. The experiment was conducted at the Niger Delta University, Faculty of Agriculture Teaching and Research Farm. Sixty (60) day old chicks which consisted of three treatments, 20 broilers, 20 normal feather and 20 naked neck genotypes were used with each of the genotype having control. Feed and water were given ad-libitum. The experimental birds for the broiler and naked neck genotypes had the highest significant values compared to the control which had significant difference (P<0.05) in their performance, while the control of the normal feather genotype had the highest significant values compared to the experimental birds but there was no significant difference (P>0.05) in their performance. The broiler birds had the highest significant values compared to normal feather and naked neck genotypes and there was a significant difference (P<0.05) in their performance. The effect of honey on haematological parameters showed that there was a significant difference (P<0.05) in White blood cell, neutrophils, lymphocyte, monocyte, eosinophile and basophile of broiler birds, in normal feather, white blood cell, neutrophile and lymphocyte differed significantly (P<0.05) and there was a significant difference (P<0.05) in neutrophile and lymphocyte in the experimental and control for naked neck genotype. In conclusion, the study revealed that the inclusion of honey caused a positive effect on the performance of broilers and naked neck, but showed no effect or reduction in performance in normal feather genotype.

Effect of naked neck gene (NA) and frizzle gene (F) on immunocompetence in chickens

2002 ◽  
Vol 43 (1) ◽  
pp. 28-32 ◽  
Author(s):  
S. Haunshi ◽  
D. Sharma ◽  
L.M.S. Nayal ◽  
D.P. Singh ◽  
R.V. Singh
Keyword(s):  
Naked Neck ◽  
Naked Neck Gene
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