International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology


Effect of Feeding systems on Milk Yield and Composition of Local and Cross Bred Dairy Cows

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Author Intisar, Y. Turki, Mawhip, A. M, Muna, E. K., Miriam S. A., Omer M. E, M. E, Hammed
On Pages 5-9
Volume No. 2
Issue No. 1
Issue Date January 01, 2012
Publishing Date January 01, 2012
Keywords forage crops, concentrate supplement, local& crossbred, milk yield and composition


Abstract

The study was carried out at Dongola, Northern State - Sudan; from 10/7 to 1/ 9 2010, to investigate the effect of some forage crops and concentrate supplements on milk yield and composition of local and cross-bred cows. Thirty milking cows, of an average body weight 400-450 kg and about 4-10 years old were used. Cows were divided into six groups ( five heads per each): Group (1) and (2) [local and cross bred cows, respectively] were fed on Solely Clover; group (3) and(4) [local and crossbred cows, respectively] were offered clover and Sorghum stover; groups (5) and (6) [local and crossbred cows, respectively] were fed Clover and concentrates. The results showed that the cross bred cows in group (6) recorded the highest (p<0.05) milk yield (17.5k/day) compared to other groups, followed by G (5) with an average milk yield of 12.9 k/day, while groups (2), (4), (1)and (3) gave an average milk yield of 10.4, 9.2, 8.8 and 7.7k/day, respectively. Concerning the milk components, experimental groups showed a significant variation (p<0.05) attributed to type of feed and breed. Group (6) showed the highest fat content (5%) where as group (3), (4) and (5) obtained 4.1, 4.4 and 4.7%, respectively. Milk from group (1) and (2) attended to have the lowest (p<0.05) fat content (3.7%). The statistical analysis showed a significant increase (p<0.05) in protein % favor for group (3) (5%) compared to other groups (1), (2), (4), (5) and(6) which recorded 4.5, 4.4, 4.6, 4.8and4.1%, respectively. Total solids of group(1) and (2)were12.1, 12.6% which was slightly lower (p<0.05) than the values obtained by cows in groups (3), (4), (5) and(6) of 13.7, 13.9, 13.4 and 13.9%, respectively.Also significant variation was recorded for ash%. The highest ash content was recorded by group (1).Water content was found to be higher (p<0.05) for group (1), 87.4% and 87.8 % for group (2) than other experimental groups (3), (4), (5)and (6), which obtained %86.,686.3, 86.1, 86.0%, respectively.

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