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Effect of Steam Heating on the Digestibility of Crude Protein of Fibrous Feed by Sheep

D.R. Dey Sarker
Department of General Animal Science Bangladesh Agricultural University Mymensingh 2202, Bangladesh

M.S. Islam
Department of Animal Husbandry, Bangladesh Agricultural Institute, Sher-E Bangla Nagar, Dhaka.

M.A. Samad
Department of General Animal Science Bangladesh Agricultural University Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

A comparative digestion trial was conducted with sixteen indigenous sheep of approximately one year of age and body weight ranging from 12-18 kg. The animals were divided into four different groups (A, B, C and 0). Animals of group A were fed untreated chopped roughage and the animals of group B, C and D were supplied chopped roughage boiled at 100°C for 15, 30 and 60 minutes respectively. The average digestibility of crude protein of control group (A) was 49 .45% and of group B, C and D were 50.67, 54.80 and 51.62 percent respectively.

Keywords: Sheep, Fibrous feeds, Steam heating, Lignin

Location: Sheep farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-1995

End Date: 00-00-1995

Program Area: Animal Health and Management

Commodity: Fodder

Objectives:

1. To increase the digestibility of crude protein from fibrous feed sources.

Methodology:

The animals were randomly placed into four groups (A, B, C and D), each group having four animals. The animals were approximately of one year of old and body weight ranging from 12-18 kg. All the animals were dewormed with Rametin to avoid parasitic infestation. The animals were then placed in the specially designed digestion trial crates. For the first ten days preliminary period, the animals were habituated with the feeds under experiment. The preliminary period was followed by a seven days collection period. The animals of control group A were fed basal ration and other treatment groups B, C and D were fed treated ration with the variable degrees of heating for 15, 30 and 60 minutes respectively . The composed rations were chopped matikalai hay,chopped treated rice straw, chopped road side grass and 45 grams of common concentrate mixture. The concentrate mixture was composed of crushed khesari, mustard oil cake and wheat bran in the ratio 1:2:3. The feed samples were placed in a big saucepan with two third volume of water and was heated over a furnace at boiling temperature of water. After steaming for desirable time the saucepan was inverted and the feeds were scattered on the sackcloth for sun drying. The dried samples were packed in the sterilized polythene bags. The feed samples were chopped into small pieces and fed to animals twice daily, two third in the forenoon and the rest in the afternoon. Drinking water was supplied ad libitum to all animals. Total raw feces voided by an individual animal was collected and weighed daily. Ten percent of these representative samples were dried in the sun and preserved in the polythene bags. The dried feces samples were thoroughly mixed and ground to powder through a 60 Mesh screen for the determination of nitrogen. Determination of nitrogen was done by kjeldahl method.

Source of Information: Bangladesh J. Agril. Sci. 22( 1): 63-66, January, 1995

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It appeared from the experiment that steam heating to fibrous feeds gave maximum digestibility.

Knowledge Management: Journal