Article Published In Vol. 04, Issue 01 (2024)

EFFECTS OF CHANGING PHOTOPERIODS IN PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES IN SUBTROPICAL BIRD BLACK HEADED MUNIA (LONCHURA MALACCA MALACCA)

Author : Pawan Kumar, Suman Tanwar, Babu Ram Singh and Sanjay Kumar Bhardwaj

Abstract

Aim: To find the Effects of Changing Photoperiods in Physiological and Biochemical Responses in Subtropical Bird Black headed Munia.

Method: This experiment was performed on the blackheaded munia during June month. A groups of photosensitive birds (n = 6-8 per group) was exposed to short day length (9L: 15D). After every 2 weeks, this group transferred to increasing photoperiod sequentially; 10L: 14D, 11L: 13D, 12L: 12D, 13L: 11D, 14L: 10D, 15L: 9D and 16L: 8D. The group received 460 lux light intensity during the day time at perch level. Observations on Physiological (body mass, body moults and moults primaries) and biochemical (Stress factor) parameter differences in blood at the appropriate samplings during the experiment.

Results: Male and female birds responded almost in similar fashion with some variations. Overall, our results show a gradual change over Photoperiod in responsiveness of the endogenous response system to stimulatory effects of long day length. They suggest roles of both long and short day lengths in regulation of seasonal cycles in subtropical bird Blackheaded munia.

Key words: Photosensitive; Photoperiod; Stress Factor; Endogenous Response; Subtropical and Seasonal cycles