Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Growth, Feed Conversion Efficiency and Carcass Characteristics of Malpura and Malpura × Awassi Crossbred Lambs in a Hot Semi Arid Environment

  • Karim, S.A. (Division of Animal Nutrition, Central sheep and Wool Research Institute) ;
  • Santra, A. (Division of Animal Nutrition, Central sheep and Wool Research Institute) ;
  • Verma, D.L. (Division of Animal Nutrition, Central sheep and Wool Research Institute)
  • Received : 2001.05.18
  • Accepted : 2001.10.26
  • Published : 2002.03.01
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Abstract

The growth rate, feed conversion efficiency and carcass characteristics of nine native Malpura (M) and eight Awassi ${\times}$ Malpura half bred (AM) male lambs were compared under intensive feeding on 60:40 concentrate and roughage based composite feed. Weaning body weight was similar in the two genetic groups while finishing body weight, total body weight gain and average daily gain during the experiment were higher (p<0.01) in AM than M lambs. The feed conversion efficiency was lower in M than AM lambs with 15.7 and 19.8 per cent feed conversion efficiency, respectively, in the two genetic groups. The dressing yield in terms of preslaughter weight or empty live weight was however similar in the two genetic groups. The loin eye area was also greater (p<0.01) in AM than M lambs. The cutability was similar for the two groups amounting to 33.2, 13.3, 13.2, 23.3 and 16.6% of half carcass, respectively, for leg, loin, rack, neck and shoulder and breast and foreshank. On an average the separable lean, fat and KOH bone content of the half carcass were 48.3, 16.8 and 23.3% for native M and 54.1, 15.0 and 19.0% for AM lambs, respectively. It is concluded that growth rate and feed conversion efficiency were better in Awassi ${\times}$ Malpura half bred than native Malpura lambs while dressing yield and cutability of standard cuts were similar in the two genetic groups.

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References

  1. AOAC. 1984. Official Methods of Analysis (13th Ed.), Association of Official Analytical Chemists, Washington, DC.
  2. Arora, A. L. and S. A. Karim. 1995. Growth response of intensively fed lambs. Indian J. Anim. Sci. 65:1046-1048.
  3. Bohra, S. D. J. 1984. Crossbreeding for evolving new mutton breeds : breed and breed cross differences in growth, efficiency of feed conversion and carcass yield. Ph.D. Thesis, Kurukshtra Univrsity, Haryana, India.
  4. CSWRI. 1992. Research Highlights. Central Sheep and Wool Research Institute, Avikanagar, Rajasthan, India, p. 2.
  5. Duncan, D. B. 1955. Multiple range and multiple F-test. Biometrics. 11:1-42. https://doi.org/10.2307/3001478
  6. ICAR. 1985. Nutrient Requirement of Livestock and Poultry. Indian Council of Agricultural Research, New Delhi, India.
  7. ISI. 1963. Indian standard specification for mutton and goat flesh. Fresh, chilled and frozen. IS 2536. Bureau of of Indian Standard Institution, New Delhi, India.
  8. Karim, S. A. 2000. Feeding small ruminants for meat and wool production. Proceedings of National Workshop on 'Animal Nutrition in Health and Disease'. Veterinary College, University of Agricultural Science (17-19 February), Bangalore, India.
  9. Karim, S. A. and P. S. Rawat. 1996. Growth performance of native and crossbred weaner lambs under intensive feeding. Indian J. Anim. Sci. 66:830-832.
  10. Karim, S. A. and P. S. Rawat. 1997. Growth performance and carcass characteristics of lambs raised on varying levels of roughage and concentrate. Indian J. Anim. Sci. 67:902-905.
  11. Kaushish, S. K., P. S. Rawat and S. C. Sharma. 1990. Performance of native sheep (Malpura) and its crosses with Avikalin under semi arid conditions. Wld. Rev. Anim. Prod. 25:43-46.
  12. Nivsarkar, A. E. and R. M. Acharya. 1982. Note on feed lot and carcass characteristics of Malpura sheep. Indian J. Anim. Sci. 52:1262-1264.
  13. Prasad, V. S. S., C. L. Arora, R. P. Singh and S. D. J. Bohra. 1981. Assessment of carcass and mutton quality in native and crossbred sheep. Indian J. Anim. Sci. 51:638-642.
  14. Sehgal, J. P., S. A. Karim, M. Singh and R. M. Acharya. 1982. A note on crossbreeding for fat-lamb production in the hot tropics. Anim. Prod. 35:435-438. https://doi.org/10.1017/S0003356100001148
  15. Singh, M., T. More, A. K. Rai and S. A. Karim. 1982. A note on adaptability of native and crossbred sheep to hot summer conditions of semiarid and arid area. J. Agric. Sci (Camb.). 99:525-528. https://doi.org/10.1017/S002185960003118X

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