scholarly journals The effect of a selected yeast fraction on the prevention of pullorum disease and fowl typhoid in commercial breeder chickens

2020 ◽  
Vol 99 (1) ◽  
pp. 101-110
Author(s):  
Chenyu Zhou ◽  
Jingzhen Liang ◽  
Weiwei Jiang ◽  
Xushao He ◽  
Shuhong Liu ◽  
...  
1940 ◽  
Vol 96 (2) ◽  
pp. 53-55
Author(s):  
J.E. Wilson
Keyword(s):  

2009 ◽  
Vol 4 (2) ◽  
pp. 66-75 ◽  
Author(s):  
H.K. Lim ◽  
K. Choi ◽  
P.K. Mandal ◽  
O. Baatartsog ◽  
C.H. Lee ◽  
...  

2015 ◽  
Vol 59 (4) ◽  
pp. 537-542 ◽  
Author(s):  
Muhammad Hassan Shafiq ◽  
Nitin M. Kamble ◽  
Tae Hoon Kim ◽  
Yoonyoung Choi ◽  
John Hwa Lee

2004 ◽  
Vol 55 (8) ◽  
pp. 825 ◽  
Author(s):  
B. J. Wood ◽  
J. H. J. van der Werf ◽  
P. F. Parnell

This paper quantifies the benefits of using a sire genotyped for a single recessive gene in a commercial beef herd. A modified gene-flow method was used to account for changing allele frequency over time. The benefits to a commercial breeder of using a genotyped sire were highest when initial allele frequency was moderate and when the sire was used in a self-replacing herd that had increased allele frequency over time. An example of the thyroglobulin gene affecting marbling in beef cattle was used. The value to a self-replacing herd of a sire homozygous for the favourable allele of the thyroglobulin gene was shown to be up to $338 more than of an ungenotyped sire, in a population where the initial gene frequency was 0.3 and the genotype accounted for 0.5 standard deviations of phenotypic variation.


2019 ◽  
Vol 8 (17) ◽  
Author(s):  
Ruy D. Chacón ◽  
Quézia Moura ◽  
Claudete S. Astolfi-Ferreira ◽  
David I. De la Torre ◽  
Laura M. C. Guerrero ◽  
...  

This report describes the genome sequences of four Salmonella enterica subsp. enterica serovar Gallinarum (Salmonella Gallinarum) strains isolated in Colombia in 2017 from layer breeders of different ages. The layer breeder flocks were presenting with an elevated mortality with lesions typical of fowl typhoid (FT).


2011 ◽  
Vol 30 (1) ◽  
Author(s):  
L Sa'idu ◽  
IM Waziri ◽  
AM Wakawa ◽  
AM Raji ◽  
PA Abdu
Keyword(s):  

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