Asian Journal of Dairy and Food Research, volume 39 issue 3 (september 2020) : 207-211

Analysis of Ewe Longevity and Lamb Survival in Teleorman Black Head Sheep

Rodica Stefania Pelmus, Horia Grosu, Mircea Cãtãlin Rotar, Mihail Alexandru Gras, Cristina Lazãr, Florin Popa
1National Research-Development Institute for Animal Biology and Nutrition, Management of Animal Genetic Resources Laboratory, Calea Bucuresti No. 1, 077015, Balotesti, Romania.
Cite article:- Pelmus Stefania Rodica, Grosu Horia, Rotar Cãtãlin Mircea, Gras Alexandru Mihail, Lazãr Cristina, Popa Florin (2020). Analysis of Ewe Longevity and Lamb Survival in Teleorman Black Head Sheep. Asian Journal of Dairy and Food Research. 39(3): 207-211. doi: 10.18805/ajdfr.DR-164.
Background: The aim of this paper was to estimate the genetic parameters for the longevity of ewes and lamb survival at 30 days in a Teleorman Black Head Sheep population.
Methods: Data was analysed with survival model.
Result: Mean length of productive life of ewes was 673.16 days. The heritability for longevity was 0.097 and for lambs’ survival at 30 days was 0.098. The breeding value of the best sheep for longevity as productive life ranged from 0.081 months to 0.129 months and for the best lambs for survival at 30 days ranged from 0.041 days to 0.127 days. The results obtained in survival analysis are showing that the improvement of environmental conditions will increase longevity of ewes and survivability of lambs. Daily and careful monitoring of the health of sheep was performed. It was ensured administration of feed and water in a proper state of hygiene, a suckling and milking hygienic and a proper microclimate. Regarding the utility, longevity is a trait that is recommended to be used in local sheep breeding programs in Romania.
  1. Annet, R.W., Carson, A.F., Dawson, L.E.R., Irwin, D., Gordon, A.W., Kilpatrick, D.J. (2011). Comparison of the longevity and lifetime performance of Scottish Blackface ewes and their crosses within hill sheep flocks. Animal. 5(3): 347-355. 
  2. Bangar, Y., Pachpute, S., Nimase, R. (2016). The survival analysis of the potential risk factors affecting lamb mortality in Deccani sheep. Journal of Dairy, Veterinary and Animal Research. 4(2): 266-270.
  3. Azad, M.S., Raina, A.K., Sumit Mahajan (2014). Introduction of Corriedale rams for improving meat and wool quality in Hilly regions of Jammu and Kashmir. Asian Journal of Dairy and Food Research. 33: 44-47.
  4. Barazandeh, A., Moghbeli, S.M., Vatankhah, M., Hassein-Zadeh, N.G. (2012). Lamb survival analysis from birth to weaning in Iranian Kermani sheep. Tropical Animal Health and Production. 44(4): 929-934. 
  5. Borg, R.C. (2007). Phenotypic and genetic evaluation of fitness characteristics in sheep under a range environment [Ph. D. dissertation]. Blacksburg: Virginia Polytechnic Institute and State University.
  6. Byun, S.O., Forest, R.H., Frampton, C.M., Zhon, H., Hickford, J.G.H. (2012). An association between lifespan and variation in insulin-like growth factor I receptor in sheep. Journal of Animal Science. 90: 2484-2487. 
  7. Dorner, W. (1999). Using Excel for Weibull Analysis. Quality Digest. 19(1): 33-41.
  8. Dickerson, G. (1970). Efficiency of animal production–moulding the biological components. Journal of Animal Science. 30: 849-859.
  9. Douhard, F., Jopson, N.B., Friggens, N.C., Amer, P.R. (2016). Effects of the level of early productivity on the lifespan of ewes in contrasting flock environments. Animal. 10-12: 2034-2042. 
  10. Fuerst-Waltl, B., Baumung, R. (2009). Economic values for performance and functional traits in dairy sheep. Italian Journal of Animal Science. 8(3): 341-357. 
  11. Getachew, T., Gizaw, S., Wurzinger, M., Haile, A., Richkowsky, B., Oheyo, A.M., Solkner, J., Meszaros, G. (2015). Survival analysis of genetic and non-genetic factors influencing ewe longevity and lamb survival of Ethiopian sheep breeds. Livestock Science. 176: 22-32. 
  12. Grosu, H., Schaeffer, L., Oltenacu, P.A., Norman, D., Powell, R., Kremer, V., Banos, G., Mrode, R., Carvalheira, J., Jamrozik, J., Draganescu, C., Lungu, S. (2013). History of genetic evaluation methods in dairy cattle. The Publishing House of the Romanian Academy, Bucharest. 
  13. Grosu, H., Lungu, S., Oltenacu, P.A., Drãgãnescu, C., Mateescu R. (2019). The prediction of breeding values of cattle. The Publishing Ceres, Bucure’ti.
  14. Hatcher, S., Atkins, K.D., Thoruberry, K.J. (2009). Survival of adult sheep is driven by longevity genes. Proceeding Association for the Advancement of Animal Breeding and Genetics 18: 580-583. 
  15. Hatcher, S., Atkins, K., Safari, E. (2010). Lamb survival in Australian Merino sheep: a genetic analysis. Journal of Animal Science. 88(10): 3198-3205.
  16. Kern, G., Kemper, N., Traulsen, I., Henze, C., Stamer, E., Krieter, J. (2010). Analysis of different effects on longevity in four sheep breeds of northern Germany. Small Ruminant Research. 90: 71-74. 
  17. Kochewad, S.A., Raghunandan, T., Sarjan Rao, K., Kondal Reddy, K., Nalini Kumari, N., Ramana, D.B.V., Anil Kumar, D., Kankarne, Y., Kumar, S., Meena L.R., Singh, M. (2018). Productive performance, body condition score and carcass characteristics of Deccani lambs reared under different farming systems. Indian Journal of Animal Research. 52: 444-448.
  18. Lima, M.J., Rokouei, M., Dashab, G.R., Seyedalian, A.R., Arough, H.F. (2019). Genetic and non-genetic analysis of lamb survival in Sangsari sheep by Gibs sampling method. Small Ruminant Research. 177: 56-60.
  19. Mandal, A., Prasad, H., Kumar, A., Roy, R., Sharma, N. (2007). Factors associated with lamb mortalities in Muzaffarnagani sheep. Small Ruminant Research. 71(1-3): 273-279.
  20. Milerski, M., Zavadilova, L., Schmidova, J., Junkuszew, A., Bojar, W. (2018). Analysis of longevity in Suffolk sheep in the Czech Republic. Medycyna Weterynaryjna-Veterinary Medicine Science and Practice 74(8): 493-496. 
  21. Mukasa-Mugerwa, E., Lahlou-Kassi, A., Anindo, D., Rege, J., Tembely, S., Tibbo, M., Baker, R. (2000). Between and within breed variation in lamb survival and the risk factors associated with major causes of mortality in indigenous Horro and Menz sheep in Ethiopia. Small Ruminant Research. 37(1-2): 1-12.
  22. Mohan, G., Gowane, G.R., Kumar Arun, Chakravarthy, A.K. (2018). Study of sire selection in view of genetic relation involving fitness traits in Malpura sheep in an organized farm of Rajasthan India. Indian Journal of Animal Research. 52: 1389-1394.
  23. Nash, M.L., Hungerford, L.L., Nash, T.G., Zinn, G.M. (1996). Risk factors for perinatal and postnatal mortality in lambs. Veterinary Record. 139(3): 64-67.
  24. Sawalha, R., Conington, J., Brotherstone, S., Villameva, B. (2007). Analyses of lamb survival of Scottish Blackface sheep. Animal. 1(1): 151-157.
  25. Shariati, M.M., Zerehdaran, S., Pourbayramin, F., Hasanvand, S., Mohammadi, K. (2018). Genetic evaluation of survival and productivity traits in Arman crossbred sheep. Revista Colombiana de Ciencias Pecuarias. 31(2): 83-92.
  26. Southey, B., Rodriguez-Zas, S., Leymaster, K. (2001). Survival analysis of lamb mortality in a terminal sire composite population. Journal of Animal Science. 79(9): 2298-2306.
  27. Vatankhah, M. (2013). Estimation of the genetic parameters for survival rate in Lori-Baktiari lambs using linear and Weibull proportional hazard models. Journal of Agricultural Science and Technology. 15(6): 1133-1143.
  28. Vatankhah, M., Talebi, M. (2009). Genetic and non-genetic factor affecting mortality in Lori-Bakhtiari lamb. Asian-Australasian Journal of Animal Science. 22: 459-464.
  29. Welsh, C.S., Garrick, D., Ennes, R., Nicoll, G. (2006). Threshold model analysis of lamb survivability in Romney sheep. New Zealand Journal of Agricultural Research. 49(4): 411-418.

Editorial Board

View all (0)