Reproductive traits and lactation performance of Kenana cows at Umbenein Livestock Research Station, Sinnar State, Sudan

  • Tilal M. A. Mudawi Faculty of Agricultural Sciences, University of Gezira, Wad Medani, Sudan
  • Rashid A. A. Ahmed Faculty of Agriculture, University of Sinnar, Sinnar, Sudan.


   Sudanese Kenana breed is one of the largest east African Zebu cattle. Its performance is close to the best dairy breeds in Africa. This study aimed to estimate selected reproduction and lactation traits and effects of sire, lactation number and year of calving on those traits in Kenana cows at Umbenein Livestock Research Station, Sinnar State, Sudan. The official records of the station during the years 2000 -2017 were used. Overall mean of age at first calving, calving interval, open, dry and lactation periods (day) and lactation, daily and standard yields (kg) were 1673, 468, 184, 151, 315, 2260, 7 and 2042, respectively. The daughters of the sire of Umbenein Research Station showed earlier age at first calving and shorter calving interval, open and dry periods, while those of the sire of Umbenein village were higher in lactation, daily and standard yields. Lactation number had significant effects (P≤0.05) on lactation yield, calving interval and open period and were least in the fourth lactation. Daily and standard yields were higher in the third lactation, with a clear drop in the fourth one. Year of calving had significant effects (P≤0.05) on calving interval, open period, daily and standard yields. All traits studied, except lactation period, were higher in 2009-2011 years of calving and decreased in 2012-2014 and 2015-2017 calvings


Abdalla, E. A, A. M. Nasr, A. M. Khalafalla and S. A. ElShafei. 1990. The influences of age on lactation length and milk yield in Kenana and Butana cows. Sudan Journal of Animal Production 3(2): 93-101.
Abdelgadir, T.M. 2014. Factors affecting the performance of crossbred dairy cows in West Sennar Sugar Factory, Sennar State, Sudan. M.Sc. Thesis, University of Gezira, Sudan.
Ageeb, A. G. and J. K. Hillers. 1991. Effects of crossing local Sudanese cattle with British Friesian on performance. Bulletin of Animal Health and Production in Africa 39: 69-79.
Elnagi. A. H. 2014. Selected morphological, productive and reproductive characteristics of Kenana cattle breed, Sinnar State, Sudan. M.Sc. Thesis, University of Gezira. Sudan.
Gasmalla, T. E. M. 2018. Reproductive and lactation performance of Kenana and Butana crossbred cows, Gezira State, Sudan. M.Sc. Thesis, University of Gezira, Sudan.
Gatesy, J. and P. Arctander. 2000. Hidden morphological support for phylogenetic placement of Peudorxy ngetinhensis with bovine bovids: A combined analysis of gross anatomical evidence and DNA sequences from five genes. Systematic Biology 49 (3): 515-538.
Luo, M.F., G. R. Wiggans and S. M. Hubbard. 1997. Variance component estimation and multitrate genetic evaluation for type traits of dairy goats. Journal of Dairy Science 80: 594 – 600.
Makawey, A, and S. Ahmed. 2005. Basics of Animal Production Science, Second Edition. Khartoum. Sudan.
MARF (Ministry of Animal Resources and Fisheries). 2016. Statistical Bulletin for animal resources, No. 25, Khartoum, Sudan.
Mohamed, O., A. Friend and A. M. Saeed. 1985. The productive performance of the Kenana cattle at Umbenein Livestock Research Station. Bull. 15, Umbenein Livestock Research Station, Sudan.
Musa, L. M., M. A. Ahmed, K. J. Peters, B. Zumbach and K. A. E. Gubartalla. 2005. The reproductive and milk performance merit of Butana cattle in Sudan. Archives of Animal Breeding 48: 445 – 459.
Osman, A. H. 1981. Genetic types for different environments. Animal Genetic Resources Conservation. Proceedings FAO/UNEP Technical Consultation, Rome, Italy.
Saeed A. M., P. N. Ward, D. Light, J. W. Durkin and R. T. Wilson 1987. Characterization of Kenana cattle at Umbenein. Sudan. ILRI Research Report No. 16 Addis Ababa, Ethiopia.
Sharaby, M. A., I. S. El Kimary and M. A. Aziz. 1987. Genetic and environment control of first lactation milk yield in cows and Buffalos. Livestock Production Science 17 (3): 225-233.
How to Cite
MUDAWI, Tilal M. A.; AHMED, Rashid A. A.. Reproductive traits and lactation performance of Kenana cows at Umbenein Livestock Research Station, Sinnar State, Sudan. Gezira Journal of Agricultural Science, [S.l.], v. 17, n. 2, dec. 2019. ISSN 1728-9556. Available at: <>. Date accessed: 01 oct. 2020.