Seasonal histomorphology of Acidophils in the Hypophysis cerebri of Gaddi goats: A comparative study between the year 2000 and the present in the context of climate change

ARJUN KUMAR  RAO; VIRENDER  PATHAK; RAJESH  RAJPUT; DIVYA  GUPTA; PARUL  SHUKLA

doi:10.56093/ijans.v95i7.168240

Authors

ARJUN KUMAR RAO Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India https://orcid.org/0009-0005-1151-6322
VIRENDER PATHAK Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
RAJESH RAJPUT Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
DIVYA GUPTA Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
PARUL SHUKLA Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India

https://doi.org/10.56093/ijans.v95i7.168240

Keywords:

Acidophils, Climate change, Gaddi goat, Histomorphology, Pituitary gland, Reproduction, Seasonal variation

Abstract

The present study was conducted to investigate the seasonal histomorphological variations in acidophil cells of the pituitary gland in Gaddi goats, with reference to changing climatic conditions between (2000) and now. A total of 35 heads from adult, pluriparous, non-pregnant Gaddi does were procured from local slaughterhouses in the Palampur region of Himachal Pradesh during different seasons of the year. The pituitary gland, appeared as a light grey, oval or pyriform structure in the interpeduncular fossa. Histological analysis of the pars distalis adenohypophysis revealed significant seasonal differences (P<0.05) in the relative proportions of acidophils The acidophils were maximum in percentage during the monsoon season. These were further classified into somatotrophs (orangeophils) and lactotrophs (carminophils) using Crossman’s modification of Mallory’s trichome stain, both showed minimal to nil PAS reactivity. The average diameter of somatotrophs was largest in monsoon (11.4±0.20 µm) and smallest in winter (10.01±0.33 µm). Similarly, lactotrophs showed maximum diameter during monsoon (10.6±0.14 µm) and minimum in spring season (8.41±0.22 µm). Comparative evaluation with previous seasonal histomorphological studies revealed discernible alterations in the cellular dimensions of acidophils over time. These changes may reflect the influence of rising temperature and humidity over the past two decades, potentially affecting the spatial distribution and functional dynamics of pituitary acidophils in Gaddi goats, with implications on reproductive performance and productivity.

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