Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

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Research Article

Indian Journal of Animal Research, volume 55 issue 11 (november 2021) : 1267-1270

Testing strategies of pigs for measurement of feed efficiency: relative improvement in feed efficiency from relying solely on indirect selection compared to indirect selection for faster growth rate and higher percent lean

Wootichai Kenchaiwong, Monchai Duangjinda, Wuttigrai Boonkum, John W. Mabry.
1Research and Development Network Center for Animal Breeding, Khon Kaen University, Khon Kaen 40002, Thailand.
Cite article:- Kenchaiwong Wootichai, Duangjinda Monchai, Boonkum Wuttigrai, Mabry. W. John (2021). Testing strategies of pigs for measurement of feed efficiency: relative improvement in feed efficiency from relying solely on indirect selection compared to indirect selection for faster growth rate and higher percent lean. Indian Journal of Animal Research. 55(11): 1267-1270. doi: 10.18805/ijar.v0iOF.6818.

ABSTRACT

The objective of this study was to compare different testing strategies of pigs involving direct measurement of feed efficiency in pig. Using simulated data software, we collected individual information for FCR and grouped trials into direct and indirect measurement. The direct FCR included measurement of FCR in both sexes (100M-100F), in boars only (100M), in 50% of boars and 50% of gilts (50M-50F), and in only 50% of boars (50M-0F). Direct measures of FCR (0M-0F) in indirect selection were not used. The highest and the lowest genetic regression responses in FCR were observed for 100M-100F and indirect selection scenarios (0M-0F). Among direct selection, the increase in genetic progress was directly related to the percent of pigs tested for FCR. Using FCRs records more than 50% (50M-50F or 100M) can raise response higher than 80%. Meanwhile, 0M-0F showed a loss in genetic gain more than 50% when compared with 100M-100F. These results suggest using direct measurements on at least 50% of all pigs for genetic evaluation in FCR.  

REFERENCES


  1. Chen, P., Baas, T.J., Dekkers, J.C.M., Koehler, K.J. and Mabry, J.W. (2003). Evaluation of strategies for selection for lean growth rate in pigs. J. Anim. Sci. 81: 1150-1157.

  2. Duangjinda, M. (2013). Evaluation, Simulation and Mate selector program Program. http://ag2.kku.ac.th/monchai/blup/    bin/Simf90-Mate_Manual.pdf. Accessed: 16.6.2013. 

  3. Falconer, D. and Mackay, T. (1996). Introduction to Quantitative Genetics. 4th Edition. Longman Editors. Essex, UK. 

  4. Hoque, M.A. and Suzuki, K. 2008. Genetic parameters for production traits and measures of residual feed intake in Duroc and Landrace pigs. Anim. Sci. J. 79: 543-549.

  5. Hoque, M.A., Suzuki, K., Kadowaki, H., Shibata, T. and Oikawa, T. (2007). Genetic parameters for feed efficiency traits and their relationships with growth and carcass traits in Duroc pigs. J. Anim. Breed. Genet. 124: 108-116.

  6. Kuhlers, D.L., Nadarajah, K., Jungst, S.B., Anderson, B.L. and Gamble, B.E. (2003). Genetic selection for lean feed conversion in a closed line of Duroc pigs. Livest. Prod. Sci. 84: 75-82.

  7. Mabry, J.W. (2012). Swine Feed Efficiency: Genetic Impact. Iowa Pork Industry Center Fact Sheets. Paper 2. 

  8. http://lib.dr.iastate.edu/ipic_factsheets/2. Accessed: 5.9.2013. 

  9. Misztal, I., Tsuruta, S., Strabel, T., Auvray, B., Druet, T. and Lee, D.H. (2002). BLUPF90 and related programs (BGF90). In: 7th World Congress on Genetics Applied to Livestock Production. Montpellier, France. Communication no. 28-07.

  10. Muir, W.M. (2000). The interaction of selection intensity, inbreeding depression, and random genetic drift on short- and long-term response to selection: Results using finite locus and finite population size models incorporating directional dominance. J. Anim. Sci. 79: 1-11. 

  11. Nguyen, N. and McPhee, C. (2005). Genetic parameters and responses of performance and body composition traits in pigs selected for high and low growth rate on a fixed ration over a set time. Genet. Sel. Evol. 37: 199-213.

  12. Sadler, L.J., Johnson, A.K., Newton, J., Stalder, K.J. and Dekkers, J.C.M. (2009). Grow-Finish Pigs Activity Levels When Fed Using a Feed Intake Recording Equipment (F.I.R.E.) Feeder. Animal Industry Report: AS 655, ASL R2468. http://lib.dr.iastate.edu/ans air /vol655/iss1/90. Accessed: 16.1. 2015. 

  13. Saintilan, R., Mérour, I., Schwob, S., Sellier, P., Bidanel, J. and Gilbert, H. (2011). Genetic parameters and halothane genotype effect for residual feed intake in Piétrain growing pigs. Livest. Sci. 142: 203-209.

     
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