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Characterizing the Gonadosomatic Index and Its Relationship with Age in Greater Cane Rat (Thryonomys swinderianus, Temminck)

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Last updated: 04 Jan 2025

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Abstract

This work investigated the gonado- somatic index (GI) by weight and by volume and its relationship with age in the greater cane rat raised in captivity at Igbesa, a suburb of Agbara Industrial layout in Ogun state, Nigeria. The actual weights and volumes of the testes of 18 sexually matured male animals, obtained after sacrificing the rats, were used to evaluate the gonadosomatic indices. The results obtained showed that the cane rat has low investment in its spermatogenic tissue and spermato- zoa having GI by weight and by volume of 0.053% and 0.059% respectively, compared to other rodents like mouse (0.4% in Mus pahari, 3% in Mus spicilegus), 0.72% in gerbils, 0.3 - 9.1 in lemur and 0.88% in African giant rat. Also, it was observed that low relationship ex- isted between testicular size (r2 = 0.23, p< 0.05) and the GI (r2 = 0.41, p <0.05) in sexually matured males. The result showed that as the animal ages even with increased body weight its GI de- clines. These observations can serve as aid for farmers involved in captive rearing of this animal and contribute to the knowledge of the reproductive biol- ogy of the male cane rat.

DOI

10.21608/jva.2009.42311

Keywords

Captive rearing, gonadosomatic index, greater cane rat, spermatogenesis

Authors

First Name

A.

Last Name

Adebayo

MiddleName

O.

Affiliation

Department of Veterinary Anatomy, University of Agriculture, Abeokuta.

Email

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City

Abeokuta

Orcid

-

First Name

B.

Last Name

Oke

MiddleName

O.

Affiliation

Department of Veterinary Anatomy, University of Ibadan, Ibadan.

Email

-

City

Ibadan

Orcid

-

First Name

A.

Last Name

Akinloye

MiddleName

K.

Affiliation

Department of Veterinary Anatomy, University of Agriculture, .

Email

-

City

Abeokuta

Orcid

-

Volume

2

Article Issue

2

Related Issue

6643

Issue Date

2009-10-01

Receive Date

2009-11-03

Publish Date

2009-10-01

Page Start

53

Page End

59

Print ISSN

1687-9988

Online ISSN

2357-0504

Article File

JVA_Volume 2_Issue 2_Pages 53-59.pdf

PDF . 294.3kB

Link

https://jva.journals.ekb.eg/article_42311.html

Detail API

https://jva.journals.ekb.eg/service?article_code=42311

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4

Type

Original Article

Type Code

782

Publication Type

Journal

Publication Title

Journal of Veterinary Anatomy

Publication Link

https://jva.journals.ekb.eg/

MainTitle

Characterizing the Gonadosomatic Index and Its Relationship with Age in Greater Cane Rat (Thryonomys swinderianus, Temminck)

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Article

Created At

22 Jan 2023