TY  - SER
AU  - Hassan,M.S.H.
AU  - Elsoudany,S.M.M.
AU  - Roushdy,Kh
TI  - Relationship between parathyroid, calcitonin hormones and productive, physiological and immunological performance of some local strains
KW  - Chickens
KW  - Pysiology
KW  - Parathyroid hormone
KW  - Physiological effect
KW  - Calcitonin
N1  - Includes references
N2  - One hundred day-old female chicks from each of Silver Montazah, Mandarah and El- Salam strains were used to evaluate both parathyroid and calcitonin hormones. At 2 weeks of age, ten blood samples/each strain were collected to determine both serum parathyroid and calcitonin hormones. Classification appeared high levels of both hormones in Silver Montazah birds, medium in Mandarah and lower in Elsalam ones. The heavier body weights and egg weights were correlated with the lower levels of both hormones. Silver Montazah birds which are higher in both hormone levels recorded earlier age at sexual maturity, laid more eggs, gained more egg mass, lower shell-less eggs and gave good shell quality. Mandarah strain showed the highest primary and secondary immuno response against SRBC's followed by Silver Montazah, lowest in El- Salam ones. The same trend was found in weights of bursa, spleen and thymus
UR  - http://nile.enal.sci.eg/EALE/2006/EPSJ/2606/I/297.pdf
ER  -