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Effects of Urea Treated and Untreated Rice Straw on Milk Quality

M. A. Islam Talukder
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh.

S. M. I. Husain
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh.

M. N. Islam
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh.

M. R. Amin
Department of General Animal Science, Bangladesh Agricultural University, Mymensingh.

Abstract/ Executive Summary:

The experiment was conducted to evaluate the effect of urea treated and untreated rice straw on milk quality. For this purpose 10 indigenous Pabna cows in their mid stage of lactation were divided into two similar groups on the basis of their body weight and milk yield. Cows on each group received either treated or untreated rice straw ad libitum together with same amount of green grass and concentrate feeds. Milk samples were collected from all cows individually once in a week for analysis during the 91 days experimental period. Specific gravity. water, fat, protein, lactose, ash. total solids and solids-not-fat content in both types of milk were determined to monitor it's quality. It was found that there was no significant effect of urea treated rice straw on specific gravity and lactose content of milk. On the other hand protein, fat, ash, total solids and solids-not-fat content of milk from treated group were significantly higher (P<0.01) than that of the milk obtained from untreated group. Water per cent in the milk of treated group was significantly lower (P<0.05) than tile milk from untreated group. It Was concluded that urea treated rice straw increases the quality of milk.

Keywords: Rice straw, Urea, Milk quality

Location: Bangladesh Agricultural University Dairy Farm.

Start Date:

End Date:

Program Area: Quality and Nutrition

Commodity: Milk

Objectives:

To see whether the urea treated rice straw has any effect on the quality of milk produced.

Methodology:

The experiment was conducted at Bangladesh Agricultural University Dairy Farm and Dairy Technology Laboratory undar the Department of Dairy Science for a period of 13 weeks. Ten lactating indigenous Pabna cows during their mid period of lactation were used in this study. Cows were divided into two similar groups on the basis of their body weight and previous milk yield. The cows were kept in individual stalls and were given experimental feed at least two weeks before starting the trial. By two weeks time cows were adjusted well with experimental diets. Cows on each group received either treated or untreated rice straw ad libitum together with same amount of green grass and concentrate feeds. Concentrate mixture consisted of wheat bran, til oil cake, fishmeal and common salt. Fishmeal was added in the ration as a source of rumen undegradable protein (UDP). Milk samples were collected separately from each cow once in a week for analysis. Chemical analysis of the samples were carried out in Dairy Technology Laboratory of the Department of Dairy Science, BAU, Mymensingh. Specific gravity and water content of milk samples were determined. Total solids and solids-not-fat contents were measured as per Eckles et al (1951). Formal titration method was used for estimation of total protein in milk. Lactose content of the milk samples were found out by subtracting the fat, protein and ash content of milk from total solids. Statistical analysis was carried out to find out the significant difference between treatments.

Source of Information: Progressive Agriculture, Vo-1 (1),13-17, 1990

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It was found that there was no significant effect of urea treated rice straw on specific gravity and lactose content of milk. On the other hand protein, fat, ash, total solids and solids-not-fat content of milk from treated group were significantly higher (P<0.01) than that of the milk obtained from untreated group. Water per cent in the milk of treated group was significantly lower (P<0.05) than tile milk from untreated group. It was concluded that urea treated rice straw increases the quality of milk.

Knowledge Management: Journal