Morphology and histomorphometric study of 1- to 4-month-old Gaga' chicken's testes

Abstract

Abstract Gaga’ chicken is one of the endemic fowls originated from Sidenreng-Rappang Regency in South Sulawesi, Indonesia. This study aimed to describe the morphology and histomorphometry of 1- to 4-month-old Gaga’ chicken’s testes. Eight chicks were used in this study, divided into four groups of ages from 1- to 4-month-old (n = 2). Chicks testes were collected by necropsy, and the histological slides were prepared and stained using the Hematoxilyn-Eosin paraffin method. The results showed there were no significant differences between Gaga’ chicken’s testes and the local breeds. The bodyweight of Gaga’ chicken was in parallel increase with the testes weight, volume, and length (P<0.05). Gonadosomatic Index (GSI) value also showed an increase in spermatozoa production. Spermatocytogenesis phase was observed in 1-month-old, while myogenesis phase in 2-months-old and spermiogenesis in 3- to 4-months-old chicks. The histomorphometry showed that the seminiferous tubules were developed in diameter. The number of seminiferous tubules increased in 1- to 2-months-old chicks but decreased in older chicks as the area became wider. It is suggested that the spermatozoa production increased as the increase of seminiferous tubule area.

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