University of Khartoum

Association Between Blood Levels of Calcium, Magnesium and Phosphorus and Fertility in Post-partal Cross-bred dairy Cows in the Sudan

Association Between Blood Levels of Calcium, Magnesium and Phosphorus and Fertility in Post-partal Cross-bred dairy Cows in the Sudan

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Title: Association Between Blood Levels of Calcium, Magnesium and Phosphorus and Fertility in Post-partal Cross-bred dairy Cows in the Sudan
Author: Sulieman, Manal Sulum; Ibrahim, Kamal Eldin Elsiddig; Makawi, Sharaf Eldin Abdalla
Abstract: A total number of 206 crossbred dairy cows (Zebu x Holstein Friesian) in five different dairy farms were selected for this study. Blood profiles of calcium, magnesium, and phosphorus were established. Blood samples were collected monthly from each cow. Blood levels of the above mentioned macrominerals were determined by using a standard methods. Data were presented as means ± standard deviations and ANOVA followed by Fisher's Protect Least Significance were used for comparison between means of the five herds. Herd was found to have a significant effect on the blood levels of the three metabolites (P<0.05). The metabolites were measured in different seasons of the year and in different stages of lactation. The relationships between the blood levels of calcium, magnesium and phosphorus and the duration of postpartum period and the number of services per conception were established. Correlation coefficient was calculated using ANOVA followed by regression blots. Blood levels of calcium and magnesium had no effects on the durations of postpartum period, but the trait was significantly affected by the blood levels of phosphorus. The number of services per conception was significantly affected by the blood levels of calcium, but neither by blood levels of magnesium nor phosphorus. The aim of this study is to correlate the serum concentrations of calcium, in organic phosphorus and magnesium with fertility traits of cross bred dairy cows in the Sudan.
URI: http://khartoumspace.uofk.edu/123456789/26279


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