Global Advanced Research Journal of Agricultural Science
June 2012 Vol. 1(6), pp. 156-162
Copyright © 2012 Global Advanced Research Journals

 

Full Length Research Paper

Phenotypic and genetic parameter estimates for grasscutter production traits. 2.Genetic and phenotypic correlations

S.Y. Annor1,2,4#, B.K. Ahunu2, G.S. Aboagye2, K. Boa-Amponsem3 and J.P. Cassady4.

1Department of Animal Science Education, College of Agriculture Education, University of Education, Winneba, P.O. Box 40, Mampong-Ashanti, Ghana.

2Department of Animal Science, College of Agriculture and Consumer Sciences, University of Ghana, P.O. Box LG 571, Legon, Accra, Ghana.

3Animal Research Institute, Council for Scientific and Industrial Research, P.O. Box AH 20, Achimota, Accra, Ghana.

4Department of Animal Science, College of Agriculture and Life Sciences, North Carolina State University, Campus Box 7621/232B Polk Hall, Raleigh NC 27695-7621, North Carolina, USA

Corresponding Author E-mail: sayannor@yahoo.com

Accepted 25 June, 2012

Abstract

The objective of this work was to estimate genetic and phenotypic correlations among traits of the grasscutter. The study was conducted at the grasscutter section of the Department of Animal Science Education, University of Education, Winneba, Ghana, from 2005 to 2010. Data consisted of records of 502 kids born by 136 does and 40 sires over a period of 5 years. Data were analyzed by mixed model methodology using a full animal model and all known genetic relationships, in multiple trait analysis, using MTDFREML programme. Genetic correlations among size traits (body weight and growth rate) were medium to high (0.32 to 0.87), whilst their phenotypic correlations ranged from low to high (0.01 to 0.99).  Antagonistic genetic relationship existed between size and reproductive traits. Phenotypic relationships between size and reproductive traits, survival, feed intake and feed efficiency were not important. Genetic correlations between size traits and survival ranged from no relationship (r = 0.00) to high (r = 0.80). Whilst genetic relationship between feed intake and size traits was positive, that between size traits and feed efficiency was negative. Litter size had little or no genetic relationship with pre-weaning survival but intermediate positive genetic relationship with post-weaning survival. Litter size had little phenotypic relationship with survival but pre-weaning survival had a high positive phenotypic relationship with litter size at weaning. In conclusion, findings in this study were in general agreement of what pertains to the grasscutter and other farm livestock species.

Keywords: Thryonomys swinderianus, cane rat, rodent, reproduction, growth, survival, feed intake, feed efficiency, domestication, phenotypic and genetic parameters.


Related Articles


Original Research Articles
Sylvia Manjeri Aarakit and Francis Keneth Kimbugwe
Moderating Effect of Organizational Environment on Intrapreneurial Orientation and Firm Performance
Glo. Adv. Res. J. Agric. Sci. July 2015 Vol: 4(7): - [Abstract] [Full Text - PDF] (771 KB)
Takaaki Fujimoto and Junji Kimura
Nonlinear mixed-effects models for the modeling the effects of growth rate on the transition of juvenile to mature wood in basic density in hinoki cypress (Chamaecyparis obtusa)
Glo. Adv. Res. J. Agric. Sci. April 2015 Vol: 4(4): - [Abstract] [Full Text - PDF] (441 KB)
Hernández, M. A, Hernández R.P, Espinosa R.R, Guillen D.S, Cianna, M.I.
Scientific Communication Allelopathic influence of Ipomoea batatas (L.) Lam. commercial clone 'CEMSA 78-354' on weeds
Glo. Adv. Res. J. Agric. Sci. October 2015 Vol: 4(10): - [Abstract] [Full Text - PDF] (395 KB)
Review
Sudhakar P, Nalla Bala Kalyan Kumar, Padmavathi A
A study on employment trends in India
Glo. Adv. Res. J. Agric. Sci. July 2012 Vol: 1(6): - [Abstract] [Full Text - PDF] (267 KB)
Original Research Articles
Qurat Ul Aan and Zafar Rashid
Identification of Critical Success Factors for Successful TQM Implementation in Textile Industries Pakistan
Glo. Adv. Res. J. Agric. Sci. October 2014 Vol: 3(10): - [Abstract] [Full Text - PDF] (172 KB)
Nisreen Haj, Mohamed Yousef, Elsafi Ahmed, Ikhlas Abdelaziz, Duha Abdu and Muna Ahmed
Assessment of Echocardiographic Imaging in Diagnosis of Heart Failure
Glo. Adv. Res. J. Agric. Sci. August 2017 Vol: 6(8): - [Abstract] [Full Text - PDF] (126 KB)

Current Issue

Viewing Options

View Full Article - PDF
Download Full Article - PDF

Search for Articles

SY Annor on Google Scholar
SY Annor on Pubmed
B.K. Ahunu GS on Google Scholar
B.K. Ahunu GS on Pubmed
Aboagye K. Boa-Amponsem on Google Scholar
Aboagye K. Boa-Amponsem on Pubmed
JP Cassady on Google Scholar
JP Cassady on Pubmed

Statistics

Viewed 958
Printed 267
Downloaded 433
Powered By iPortal Works