Report on: CHARACTERIZATION OF SOME REPRODUCTIVE TRAITS OF DAIRY COWS | ||
| Journal of Animal and Poultry Production | ||
| Article 1, Volume 31, Issue 12, December 2006, Pages 7541-7543 PDF (33.14 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2006.235664 | ||
| Author | ||
| A. A. Hassabo | ||
| Faculty of Agricultural Technology Science and Fish, El Neelain University, Khartoum, Sudan | ||
| Abstract | ||
| The research is conducted to, ¡nvestigate the difference between cross bred dairy cows (Kenana x Friesian) with local breed (kenana) in sorne reproductive traits. The research also seek for the best cross that can be kept in the research area. 200 dairy cows including local breed ( kenana.) 50%62.5% and 75% cross bred dairy cows were studied ¡n five suecessive years (1997-200 1) The average birth weight was 21.5, 25.4,25,9 and 25,6 kgs for local, breed 50%, 62.5% and 75% respectively. Furthermore number of services per conception was 138, 1.36, 1.36, and 1.47, for the local 50% 62.5% and 25% respectively On the other hand the average of first calving age weight was 262.6, 358.9, 376.2 for local 50%, 62 and 75% respectively, the average gestation penod per cow was 281.1 282.4 and 282.9 days for ¡ocal 50 62.5 and 74% respectively. The statistícal analysis showed that 62.5% crossbred cows had better performance than the others. The research concluded that extension should encourage the famiers to adopt 62% hybrid to carry out further studies on milk production for the different breeds. Keywords: Dairy cows, reproductive INTRODUCTION Tropical dairy cows suffer from many factors the low quality forage, hot stress, disease and low production. Genetic improvement is one of the main tools that can increase the production In addition to environmental ¡rrprovement. cross breeding is one of the effective means that can upgrade the production of kenana and Butaria cows which are the best milk producing cows in the sudan. Researchs were carried out to raise the yield of local breed Saeed et a!. (1988). 50% cross herd cows were the best in the environment of Sudan and to sub extence 62.5% Dairy farm was attached to kenana Sugar company in 1981 and fewer kenana cows had been adapted there . professionals in kenana scheme began to improve their herd by crossing loca’ breeds with pure Fresiari. The study is seeking for the best rate that may show better r productive performance ¡n the (SSR) Analysis. MATERIALS AND METHODS The research area The research is going carried out in kenana Sugaz’ company dairy farm. | ||
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