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Effect of Supplementation of Micronutrients on the Performance of Dairy Cows

M. M. Sharmin
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

M. A. Samad Khan
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

M. N. Islam
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

M. A. Islam
Department of Animal Nutrition, Bangladesh .Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted to study the effect of micronutrients supplementation on body weight of cows, birth weight of calf, colostrums composition, milk yield and milk composition. Six animals were divided in to two groups viz. control and supplemented group. Control group was provided conventional diet and supplemented group was supplied conventional diet plus vitamin-mineral mixture (1g vitamix powder/1kg concentrate feed) respectively for two months before calving. In supplemented group the average daily gain of the cows was (49.17 g/d) higher (P<0.01) and the calves were 2 kg heavier in supplemented group compared to control group. Fat content and protein content of colostrum in supplemented group were also significantly higher (P<0.01 and 0.05). The milk yield, fat and protein values of milk were increased non-significantly by 1.03 kg/d/h, 2.8 g/kg and 0.3 g/kg respectively. Ca content of milk was more or less similar in both cases.

Keywords: Milk protein, Milk fat, Micronutrients, Supplementation.

Location: BAU, Mymensingh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Cow

Objectives:

1.To investigate the effect of micro-nutrients supplementation on body weight of cows and birth weight of calves

2.To know the effect of micro-nutrients supplementation on colostrum composition, milk yield and milk composition.

Methodology:

The present study was carried out at Department of Dairy Science, Bangladesh Agricultural University. Six pregnant cows (Sahiwal cross) of two to fifth lactation were used in this experiment for a period of 95 days (60 days before calving and 35 days after calving). Animals were divided into control group and supplemented groups. All the experimental animals were fed with green German (Echinoclora grousgally) and Para grass (Brachiaria mutica) on ad libitum basis, 1 kg of concentrate mixture/ head/ day and only the animals of supplemented group were provided with vitamin-mineral mixture (1 g/kg concentrate mixture). The concentrate mixture contained rice polish, wheat bran and til oil cake. Vitamin-mineral mixture (Composition per 500g Vitamix powder) contains Vitamin-A- 3000000 IU; Vitamin D 100000 I.U; Vitamin E – 50 mg; Co – 50 mg; Cu – 500 mg; Fe – 5 mg; Se – 15 mg; Mo – 50 mg; Mg – 25 mg; Mn – 205 mg; Zn – 2g; Ca – 130g and P – 32.5 g and I – 30 mg. The pregnant cows were weighed individually to take the body weight. Colostrum samples from each calved cows were collected daily for first five days after calving and individual milk sample was collected just after complete milking at seven days interval for chemical analysis. Milk of the individual cow was recorded weekly. The colostrum samples were analyzed for fat and protein content and milk samples were analyzed for fat, protein and Ca content. Fat test was performed by Babcock fat test method and protein content was estimated by Kjeldhal method. Ca content was determined by Ethylene Diamine Tetra Acetate titrimetric method. The data were analyzed by using t-test.

Source of Information: Bang. J. Anim. Sci. 2010, 39(1&2) : 151 – 155 ISSN 0003-3588

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present experiment concluded that the micronutrients supplementation improves the body weight of pregnant cows, fat and protein content of colostrums.

Knowledge Management: Journal