University of Khartoum

Effect of Level of Concentrate Feeding Prior to Calving on Subsequent Post Calving Performance of Dairy Cows.

Effect of Level of Concentrate Feeding Prior to Calving on Subsequent Post Calving Performance of Dairy Cows.

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Title: Effect of Level of Concentrate Feeding Prior to Calving on Subsequent Post Calving Performance of Dairy Cows.
Author: El Tayeb Ibrahim, Ali
Abstract: Eighteen milking cross-bred dairy cows weighing (370-410kg) were used to study the effect of level of concentrate feeding in late pregnancy on subsequent post-calving performance. Animals were divided into three groups according to their weight, and then randomly assigned to three dietary treatments. Animals were given restricted amount of Sudan grass (10kg) plus 1.2 and 3 kg of concentrate for individuals in treatments A, B and C, respectively for 60 days pre-calving. During the early lactation period (105 days) all animals in the three treatments were given 3kg of concentrate plus 8kg of Sudan grass. Average daily gain during the steaming-up period was significantly different (P<0.05) among the three dietary treatments. Average weight gains for treatment A, B and C were 0.24, 0.37 and 0.47, respectively. Birth weights of calves differed (P<0.05) among the three dietary treatment. The respective values of this parameter were 23.5, 25.4 and 28 (for treatments A, B and C. The average milk yield (kg/head/day) during early lactation differed (P<0.05) among treatments. The values of this parameter for treatments A, B, and C were 7.9, 9.6 and 10.3, respectively. Percentages of fat and protein were normal and did not differ (P>0.05) among treatments. The percentages of fat and protein in treatments A, B and C were 3.8, 3.7; 3.8, 3.9 and 3.9, 4.0, respectively.
URI: http://khartoumspace.uofk.edu/handle/123456789/13736
Date: 2015-06-22


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