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Current Research in Agricultural Sciences

June 2019, Volume 6, 2, pp 121-134

Comparing Post-Partum Growth by Body Weight between Sex and Litter Size of Agouti (Dasyprocta Leporina) Offspring from Birth to 360 Days Old

Riyadh Mohammed

,

Asad Mohammed

,

Letetia Addison

,

Isaac Dialsingh

,

Kavita Kameela Sant

,

Gary Wayne Garcia

Riyadh Mohammed 1 ,

Asad Mohammed 1 Letetia Addison 1 Isaac Dialsingh 1 Kavita Kameela Sant 1 Gary Wayne Garcia 1 
  1. University of the West Indies, St. Augustine, Trinidad and Tobago. 1

Pages: 121-134

DOI: 10.18488/journal.68.2019.62.121.134

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Article History:

Received: 13 June, 2019
Revised: 19 July, 2019
Accepted: 22 August, 2019
Published: 10 October, 2019


Abstract:

Thirty (30) offspring were weaned at 7 days old and 12 weights were taken every 30 days from the date of birth until 360 days old. The objectives of this study were: 1) to observe any dimorphism by live weight gain between agouti males and females at each 30 day interval, 2) to see if there was any difference in growth rate between litter sizes, and 3) to observe of there was a point where growth plateaued and to decide on an average age and weight for utilization (meat). Results suggested that: 1) Offspring can be weaned as early as 7 days, 2) Single born offspring grew faster than double or triple born initially in the earlier periods of life (< 6 months old) (18.89 g/d vs.17.61 g/d, 17.57 g/d) 3) Compensatory growth took place for offspring that came from larger litters in the latter stages of life (> 6 months old) (1.25 g/d, 1.21 g/d vs. 0.87 g/d) and had no major disadvantage by weight when compared to single born offspring (2750.8g 2770.0g and 2784.1g,), 4) Male and female offspring grew at the same rate from day 0 to 360, hence no sexual dimorphism by live weight was seen at day 360, 5) The average weight for optimum utilization (harvest) by live weight is no less than 2600g which can be achieved by 8 months of age, 6) The Gompertz growth model best describes the growth of Agouti offspring as compared to the Logistic and Von Bertalanffy models.
Contribution/ Originality
This study is one of very few studies which have investigated the growth and development of agouti offspring along a 360 day period and compared the growth rates of sexes and litter sizes to the Gompertz , Logistic and Von Bertalanffy growth models.

Keywords:

Litter size, Sex, Growth rate, Average daily gain, Offspring, Growth models.

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Reference:

[1]          R. C. L. Brown-Uddenberg, "The conceptualization of an intensive production model for the agouti (Dasyprocta leporina) A neotropical rodent in Trinidad, West Indies," M.Phil. Thesis in Livestock Science, The University of the West Indies, Trinidad, Trinidad and Tobago, W.I, 2001.

[2]          D. A. Meritt, "The natural history and captive management of the central America agouti (Dasyprocata punctata) grey and agouti (Dasyprocta aguti) Linne," in American Association of the Zoological Parks and Aquariums, Annual Conference Proceedings. Denver, Colorado, 1978, pp. 177-181.

[3]          R. M. Nowak, Walker’s mammals of the world, 5th ed. vol. 2. Baltamore and London: The John Hopkins University Press, 1991.

[4]          P. Nguimkeu, "A simple selection test between the Gompertz and Logistic growth models," Technological Forecasting and Social Change, vol. 88, pp. 98-105, 2014. Available at: https://doi.org/10.1016/j.techfore.2014.06.017.

[5]          A. Garnero, C. Marcondes, N. Albuquerque, R. Araújo, Y. Pendu, and D. Guimarães, "Growth curve of female collared peccaries (Pecari tajacu) raised in captivity in the Brazilian amazon region," Brazilian Archive of Veterinary Medicine and Animal Science, vol. 65, pp. 961-966, 2013. Available at: https://doi.org/10.1590/s0102-09352013000400004.

[6]          A. Gbangboche, R. Glele-Kakai, S. Salifou, L. G. d. Albuquerque, and P. Leroy, "Comparison of non-linear growth models to describe the growth curve in West African dwarf sheep," Animal, vol. 2, pp. 1003-1012, 2008. Available at: https://doi.org/10.1017/s1751731108002206.

[7]          R. Mohammed, L. George, and W. G. Gary, "Towards the determination of a “Weaning Age” for the intensive production of the agouti (Dasyprocta leporina)." Livestock Research for Rural Development. Available: http://www.lrrd.org/public-lrrd/proofs/lrrd3010/riyad30173.html, 2018.

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Funding:

This study received no specific financial support.

Competing Interests:

The authors declare that they have no competing interests.

Acknowledgement:

All authors contributed equally to the conception and design of the study.

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