A novel 86-bp indel of the motilin receptor gene is significantly associated with growth and carcass traits in Gushi-Anka F2 reciprocal cross chickens

2019 ◽  
Vol 60 (6) ◽  
pp. 649-658 ◽  
Author(s):  
D. Liu ◽  
R. Han ◽  
X. Wang ◽  
W. Li ◽  
S. Tang ◽  
...  
1992 ◽  
Vol 70 (8) ◽  
pp. 2349-2358 ◽  
Author(s):  
T. M. Wilken ◽  
L. L. Lo ◽  
D. G. McLaren ◽  
R. L. Fernando ◽  
P. J. Dziuk

2021 ◽  
Vol 48 (5) ◽  
pp. 20-29
Author(s):  
H. H. Gunn ◽  
S. N. Chimenem-Amadi ◽  
V. U. Oleforuh-Okoleh ◽  
B. O. Agaviezor

The study was conducted to assess the genetic diversity and association of motilin receptor gene between growth traits in Nigerian improved native chickens by using 150 chickens of mixed sexes comprised of 50 naked neck, 50 Normal feathered and 50 Frizzled feathered. The birds were kept for 16 weeks during which feed and water were supplied ad libitum as well as medications/vaccinations. During this period, data on feed intake, feed conversion ratio, body weight, wing length, shank length, drumstick, body length, height at withers and breast girth were collected. Blood samples were collected for DNA extraction at the 16 week. Polymerase Chain Reaction and sequencing was done. Data collected were subjected to Analysis of Variance (ANOVA). The results revealed C>G mutation that was associated with the growth data. There was no significant (p>0.05) difference between the haplotypes (CC and CG) in feed intake although, CG haplotype (mutant gene) recorded the numerical higher value (3584.00±11.96g). Significant effect (p<0.05) was observed for feed conversion ratio with a range of 4.17±0.09 in CG to 4.22±0.11 in CC. Body weight was also significant (p<0.05) with values ranging from 1672.00±32.93g in CC to 1954.00±29.45g in CG. There was no significant (p>0.05) difference between the haplotype CC (normal) and haplotype CG (mutant) for wing length, shank length, drumstick, body length, height at withers and breast girth. The highest estimates of evolutionary divergence between sequences (0.046) were observed between naked neck chickens and Normal feathered chickens. Normal feathered chicken had the highest within mean group genetic distance of 0.143. These results if properly harnessed could assist in the improvement of the Nigeria local chicken in terms of improved growth performance.       L'étude a été menée pour évaluer la diversité génétique et l'association du gène du récepteur de la motiline entre les traits de croissance chez des poulets indigènes améliorés nigérians en utilisant 150 poulets de sexes mixtes comprenant 50 à cou nu, 50 à plumes normales et 50 à plumes frisées. Les oiseaux ont été gardés pendant 16 semaines au cours desquelles de la nourriture et de l'eau ont été fournies ad libitum ainsi que des médicaments/vaccinations. Au cours de cette période, des données sur la prise alimentaire, le taux de conversion alimentaire, le poids corporel, la longueur des ailes, la longueur du jarret, le pilon, la longueur du corps, la hauteur au garrot et la circonférence de la poitrine ont été recueillies. Des échantillons de sang ont été prélevés pour l'extraction d'ADN à la 16e semaine. La réaction en chaîne par polymérase et le séquençage ont été effectués. Les données recueillies ont été soumises à une analyse de variance (ANOVA). Les résultats ont révélé une mutation  C>G associée aux données de croissance. Il n'y avait pas de différence significative (p>0,05) entre les haplotypes (CC et CG) dans la prise alimentaire bien que l'haplotype CG (gène mutant) ait enregistré la valeur numérique la plus élevée (3584,00±11,96g). Un effet significatif (p<0,05) a été observé pour le taux de conversion alimentaire avec une plage de 4,17 ± 0,09 en CG à 4,22 ± 0,11 en CC. Le poids corporel était également significatif (p<0,05) avec des valeurs allant de 1672,00 ± 32,93 g en CC à 1954,00 ± 29,45 g en CG. Il n'y avait pas de différence significative (p>0,05) entre l'haplotype CC (normal) et l'haplotype CG (mutant) pour la longueur des ailes, la longueur du jarret, le pilon, la longueur du corps, la hauteur au garrot et la circonférence de la poitrine. Les estimations les plus élevées de divergence évolutive entre les séquences (0,046) ont été observées entre les poulets à cou nu et les poulets à plumes normales. Le poulet à plumes normal avait la distance génétique la plus élevée au sein du groupe moyen de 0,143. Ces résultats, s'ils sont correctement exploités, pourraient contribuer à l'amélioration du poulet local du Nigeria en termes de performances de croissance améliorées


2008 ◽  
Vol 19 (4) ◽  
pp. 294 ◽  
Author(s):  
A. RYBARCZYK ◽  
M. KMIEC ◽  
R. SZARUGA

The aim of the study was to establish the relationship between a calpastatin gene (CAST) polymorphism, the ryanodine receptor gene (RYR1) polymorphism and carcass/meat quality traits in crossbred pigs. No significant differences in the analyzed pigs were found between genotypes CC and CT at the locus RYR1 and CD and DD at the locus CAST/MspI in terms of carcass and meat quality. However, a significant association of the CAST/ApaLI polymorphism with carcass quality and meat marbling were observed. The carcasses of AB pigs had significantly higher carcass percentage of lean meat, thinner backfat and thicker muscle, as well as lower meat marbling, as compared with the BB pigs. Furthermore, interactions CAST/MspI × RYR1 and CAST/ApaLI × RYR1 were found significant in relation to all the studied carcass traits. The results presented here imply that the CAST gene recognized with ApaLI may be considered as important in terms of the way it affects porcine carcass quality traits. Moreover, the research has revealed a relationship between CAST and RYR1 genotypes as regards formation of carcass traits in pigs. Follow-up studies, however, should be carried out on larger populations representing all possible CAST genotypes.;


Author(s):  
K.W. Lee ◽  
R.H. Meints ◽  
D. Kuczmarski ◽  
J.L. Van Etten

The physiological, biochemical, and ultrastructural aspects of the symbiotic relationship between the Chlorella-like algae and the hydra have been intensively investigated. Reciprocal cross-transfer of the Chlorellalike algae between different strains of green hydra provide a system for the study of cell recognition. However, our attempts to culture the algae free of the host hydra of the Florida strain, Hydra viridis, have been consistently unsuccessful. We were, therefore, prompted to examine the isolated algae at the ultrastructural level on a time course.


2001 ◽  
Vol 32 (1) ◽  
pp. 50-50
Author(s):  
S. F. Ge ◽  
M. N. Romanov ◽  
P. J. Sharp ◽  
D. W. Burt ◽  
I. R. Paton ◽  
...  

2001 ◽  
Vol 268 (6) ◽  
pp. 1802-1810
Author(s):  
Danielle Naville ◽  
Estelle Bordet ◽  
Marie-Claude Berthelon ◽  
Philippe Durand ◽  
Martine Begeot

2006 ◽  
Vol 175 (4S) ◽  
pp. 136-136
Author(s):  
Ralph Buttyan ◽  
Xuezhen Yang ◽  
Min-Wei Chen ◽  
Debra L. Bemis ◽  
Mitchell C. Benson ◽  
...  

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