scholarly journals Genetic relationship between leg problems and bone quality traits in a random mating broiler population

2015 ◽  
Vol 94 (8) ◽  
pp. 1787-1790 ◽  
Author(s):  
F. González-Cerón ◽  
R. Rekaya ◽  
S.E. Aggrey
2015 ◽  
Vol 94 (5) ◽  
pp. 883-889 ◽  
Author(s):  
F. González-Cerón ◽  
R. Rekaya ◽  
S.E. Aggrey

Author(s):  
Beena Sinha ◽  
K. G. Mandal ◽  
Ragini Kumari ◽  
Anjali Kumari ◽  
D. S. Gonge

Poultry farming is gaining strength in mitigating livelihood and nutritional security to the poor farmers which constitute 60% of the India’s population. Thus eggs of superior quality is prerequisite for profitable marketing and for hatchability too. The present study was conducted on two improved varieties, Vanaraja (dual purpose type) and Gramapriya (the layer type) chicken developed at PDP, Hyderabad and their crosses on random mating. The genetic groups taken were Gramapriya (male) x Gramapriya (female),Vanaraja(male) x Vanaraja(female), Gramapriya(male) x Vanaraja(female)and Vanaraja (male) x Gramapriya(female). 6 males and 30 females were taken from each genetic group and maintained separately under deep litter system with a mating ratio of 1 male : 5 females. To study the genetic effect on external and internal egg quality traits, a total of more than 50 eggs were collected at random from each of 4 genetic groups upto 28 weeks of age. The average shell thickness obtained to be ranged from 0.36 to 0.39 mm. The average albumen and yolk indices were found to be ranged from 7.396 to 8.656 and 41.749 to 43.888 respectively. The average shell weight and percentage of shell weight observed to be ranged from 4.147 to 5.627 g and 17.266 to 18.003% respectively.


1991 ◽  
Vol 69 (1) ◽  
pp. 43-48 ◽  
Author(s):  
A. M. Bork ◽  
C. M. Strobeck ◽  
F. C. Yeh ◽  
R. J. Hudson ◽  
R. K. Salmon

To evaluate the genetic relationship within and between wood and plains bison of Elk Island National Park, genomic DNA samples were screened for restriction fragment length polymorphisms (RFLP) with cDNA probes for growth hormone, growth hormone releasing factor, somatostatin, and insulin-like growth factor-1. Of the 28 fragments identified, two revealed RFLPs, both of which were associated with the growth hormone releasing factor locus. The observed frequencies of the polymorphic sites did not differ from a Hardy–Weinberg distribution in either population, which is indicative of random mating populations. The contingency χ2 tests for homogeneity indicate that the fragment frequencies of the polymorphic restriction sites differ significantly (P = 0.00) between the wood and plains bison. The number of net nucleotide substitutions between the two populations was 0.0007, indicative of a recent divergence. Conversion of the bison nucleotide divergence results in a relative protein divergence of 0.007 to 0.018. This converted divergence corresponds closely to the divergence reported for other geographically isolated populations; thus, this preliminary analysis suggests the bison have at least reached the stage of geographic isolation in their evolutionary divergence.


Ob Gyn News ◽  
2005 ◽  
Vol 40 (10) ◽  
pp. 12
Author(s):  
KERRI WACHTER
Keyword(s):  

2013 ◽  
Author(s):  
Maurizio Feola ◽  
Cecilia Rao ◽  
Monica Celi ◽  
Elena Gasbarra ◽  
Umberto Tarantino

2013 ◽  
Author(s):  
Alberto Argentiero ◽  
Nadia Agnello ◽  
Cosimo Neglia ◽  
Giovanna Chitano ◽  
Rosa Alessandra Della ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document