Haematological Characterization of Reproductive Status at Laying Hens by Age

Authors: P. C. Boisteanu, M. G. Usturoi, Roxana Lazar, B. V. Avarvarei

Abstract:

Physiological activity of the pineal gland with specific responses in the reproductive territory may be interpreted by monitoring the process parameters used in poultry practice in different age batches of laying hens. As biological material were used 105 laying hens, clinically healthy, belonging to ALBO SL- 2000 hybrid, raised on ground, from which blood samples were taken at the age of 12 and 28 weeks. The haematological examinations were concerned to obtain the total number of erythrocytes and leukocytes and the main erythrocyte constant (RBC, PCV, MCV, MCH, MCHC and WBC). The results allow the interpretation of the reproductive status through the dynamics of the presented values.

Keywords: laying hens, haematology, reproductive status,

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082423

References:

[1] D. N. Andr├ís, J. C. Valér, Cry1 expression in the chicken pineal gland: Effects of changes in the light/dark conditions, General and Comparative Endocrinology, Vol 152, Issue 2-3, 2007, pp. 144-147.
[2] V. Csernus, N. Faluhelyi, A. D. Nagy, Features of the circadian clock in the avian pineal gland, Ann. N.Y. Acad. Sci. 1040, 2005, pp. 281-287.
[3] A. Natesan, L. Geetha, M. Zatz, Rhythm and soul in the avian pineal, Cell. Tissue Res. 309, 2002, pp. 35-45.
[4] J. B. Michael, M. C. Vincent, Melanopsin expression in the chick retina and pineal gland, Molecular Brain Research, vol. 134, Issue 2, 2005, pp. 345-348.
[5] Vinod Kumar, Bhanu Pratap Singh, Sangeeta Rani, The bird clock: a complex, multi- oscillatory and highly diversified system, Biological Rhythm Research, Volume 35, Numbers 1-2, 2004, pp. 121-144.