The effect of Frequent Milking on Production And Compositional Quality of Milk

Abstract

This study was conducted in Azahir Company for Agricultural production and processing at Albagair Area in northern region of Al-Gazeera State, during the period from November 2004 to October 2005 in Holstein/ Friesian cows. The objective of this study is to evaluate the effect of number of milking on yield and composition. Fifteen Cows were used in the observation in the same age and lactation they were milked two-times /day six months and three-times/day another six months ,milk samples subjected to chemical analysis in the laboratory of Animal Production Department- College of Agricultural Studies – Sudan University of Science and Technology. To compare the results of the analysis we used T-test in SPSS version 12 was used. The results indicated that there were significant differences (P> 0.01) between milking two-times/day and three-times milking/ day. The production is (2920.80 ± 334, 4 3371 ± 162) liters respectively, while the milk fat is reduction and showed highly significant differences (P>0.01) with means (3.62 ± 0.08, 3.28 ± 0.11) between two-times/day and three-times milking/ day, respectively. Although, protein content showed no significant differences between two-times/day and three-times milking/ day with means (3.19 ± 0.23, 3.27 ± 0.26) respectively. The total solid demonstrated significant differences (p> 0.05) with means (12.66 ± 0.45, 12.26 ± 0.55) between milking two-times and three-times/day. The solid not fat “SNF” contents have significant differences with means (8.90 ± 0.41, 8.58 ± 0.30) for two-times/day and three-times milking a day respectively. The values of ash content disclosed significant (p> 0.05) with means (0.68 ± 0.08, 0.7 ± 0.06) between milking twotimes/ day and three times milking /day. The economical benefit in two-times milking/day was low in labor, electricity and additional services. Means production/day in two times 5 and three times were16.2 and18.7 litre and the price cost /litre 56 and 53SD respectively, this was due to the increasing on the yield. 6