Changes of Poultry Meat Chemical Composition, in Relationship with Lighting Schedule
The paper is included within the framework of a
complex research program, which was initiated from the hypothesis
arguing on the existence of a correlation between pineal indolic and
peptide hormones and the somatic development rhythm, including
thus the epithalamium-epiphysis complex involvement. At birds,
pineal gland contains a circadian oscillator, playing a main role in the
temporal organization of the cerebral functions. The secretion of
pineal indolic hormones is characterized by a high endogenous
rhythmic alternation, modulated by the light/darkness (L/D)
succession and by temperature as well. The research has been carried
out using 100 chicken broilers - “Ross" commercial hybrid,
randomly allocated in two experimental batches: Lc batch, reared
under a 12L/12D lighting schedule and Lexp batch, which was photic
pinealectomised through continuous exposition to light (150 lux, 24
hours, 56 days). Chemical and physical features of the meat issued
from breast fillet and thighs muscles have been studied, determining
the dry matter, proteins, fat, collagen, salt content and pH value, as
well. Besides the variations of meat chemical composition in relation
with lighting schedule, other parameters have been studied: live
weight dynamics, feed intake and somatic development degree. The
achieved results became significant since chickens have 7 days of
age, some variations of the studied parameters being registered,
revealing that the pineal gland physiologic activity, in relation with
the lighting schedule, could be interpreted through the monitoring of
the somatic development technological parameters, usually studied
within the chicken broilers rearing aviculture practice.
[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] M. J. Bailey, P. D. Beremand, D. R. Hammer, T. L. Bell-Pedersen,V. M.
Thomas Cassone, Transcriptional profiling of the chick pineal gland a
photoreceptive circadian oscillator and pacemaker, Mol Endocrinol,
17(10), 2003, pp 2084-95.
[3] P. C. Boisteanu, Glanda pineala si rolul ei in crestere si dezvoltare la
pasari, Editura Corson, Iasi, 2000.
[4] V. Csernus, Mess Béla, Biorhythms and pineal gland,
Neuroendocrinology Letters nr. 6, vol. 24, 2003 pp. 404-411.
[5] 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.
[6] V. Csernus, The Avian Pineal Gland, Chronobiology International,
Volume 23, Numbers 1-2, 2006, pp. 329-339.
[7] A. Natesan, L. Geetha, M. Zatz, () - Rhythm and soul in the avian
pineal, Cell. Tissue Res. 309, 2002, pp. 35-45.
[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] M. J. Bailey, P. D. Beremand, D. R. Hammer, T. L. Bell-Pedersen,V. M.
Thomas Cassone, Transcriptional profiling of the chick pineal gland a
photoreceptive circadian oscillator and pacemaker, Mol Endocrinol,
17(10), 2003, pp 2084-95.
[3] P. C. Boisteanu, Glanda pineala si rolul ei in crestere si dezvoltare la
pasari, Editura Corson, Iasi, 2000.
[4] V. Csernus, Mess Béla, Biorhythms and pineal gland,
Neuroendocrinology Letters nr. 6, vol. 24, 2003 pp. 404-411.
[5] 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.
[6] V. Csernus, The Avian Pineal Gland, Chronobiology International,
Volume 23, Numbers 1-2, 2006, pp. 329-339.
[7] A. Natesan, L. Geetha, M. Zatz, () - Rhythm and soul in the avian
pineal, Cell. Tissue Res. 309, 2002, pp. 35-45.
@article{"International Journal of Biological, Life and Agricultural Sciences:59760", author = "P. C. Boisteanu and M. G. Usturoi and Roxana Lazar and B. V. Avarvarei", title = "Changes of Poultry Meat Chemical Composition, in Relationship with Lighting Schedule", abstract = "The paper is included within the framework of a
complex research program, which was initiated from the hypothesis
arguing on the existence of a correlation between pineal indolic and
peptide hormones and the somatic development rhythm, including
thus the epithalamium-epiphysis complex involvement. At birds,
pineal gland contains a circadian oscillator, playing a main role in the
temporal organization of the cerebral functions. The secretion of
pineal indolic hormones is characterized by a high endogenous
rhythmic alternation, modulated by the light/darkness (L/D)
succession and by temperature as well. The research has been carried
out using 100 chicken broilers - “Ross" commercial hybrid,
randomly allocated in two experimental batches: Lc batch, reared
under a 12L/12D lighting schedule and Lexp batch, which was photic
pinealectomised through continuous exposition to light (150 lux, 24
hours, 56 days). Chemical and physical features of the meat issued
from breast fillet and thighs muscles have been studied, determining
the dry matter, proteins, fat, collagen, salt content and pH value, as
well. Besides the variations of meat chemical composition in relation
with lighting schedule, other parameters have been studied: live
weight dynamics, feed intake and somatic development degree. The
achieved results became significant since chickens have 7 days of
age, some variations of the studied parameters being registered,
revealing that the pineal gland physiologic activity, in relation with
the lighting schedule, could be interpreted through the monitoring of
the somatic development technological parameters, usually studied
within the chicken broilers rearing aviculture practice.", keywords = "lighting schedule, physic-chemical characteristics ofmeat, pineal gland at birds.", volume = "4", number = "5", pages = "340-5", }