Effect of level of supplementary protein on milk production of dairy cows

Saminathan, S. Patmanaban (1985) Effect of level of supplementary protein on milk production of dairy cows. [Project Paper] (Submitted)

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Abstract

In a study conducted over two months, 9 dairy cows from the Dairy Unit, Universiti Pertanian Malaysia, were randomly divided into 3 groups; A,B and C with 3 animals in each group. Over a duration or 8 weeks, 4 weeks were allowed for the adaptation of feed and the other 4 weeks , the actual experimental period. During the adaptation period, the cows were individually fed a ration formulated according to the National Research Council requirements. In the experimental period, group A was assigned to feeding a ration formulated according to National Research Council requirement and rations for groups B and C were 20 and 40 per cent crude protein above National Research Council requirement. Thus, the crude protein level in ration of group A, B and C were 12-13, 14.4-15.6 and 18.4 per cent respectively. There was no significant difference between treatment means in milk yield during the experimental period. There was no change in the butter rat and protein content of the milk, during both periods. No significant change in the dry matter intake was observed among the treatments between the adaptation and experimental periods. An increase of 1-1.7 kilogram in the mean daily milk yield in all the groups obtained, could be due to the effect of the excess metabolizable energy the animals had consumed.

Item Type:	Project Paper
Subjects:	S Agriculture > SF Animal culture
Faculty:	Faculty of Veterinary Medicine
Depositing User:	Ms. Nordeena Abdul Aziz
Date Deposited:	17 Oct 2025 02:28
Last Modified:	17 Oct 2025 02:28
URI:	http://psaspb.upm.edu.my/id/eprint/2469

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