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Effect of Silage and Soybean Straw Based Total Mixed Ration (tmr) on the Growth Performances of Growing Bull Calves

NR Sarker
Fodder Research and Development Project, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka

D Yeasmn
Fodder Research and Development Project, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka

F Tabassum
Fodder Research and Development Project, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka

MA Habib
Fodder Research and Development Project, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka

Abstract/ Executive Summary:

This study was undertaken to know the effect of silage and soybean straw based Total Mixed Ration (TMR) on the growth performances of growing bull calves. 30 growing bull calves were divided into 5 treatment groups considering their initial body weight 111.30±6.67 to115.66±10.69 kg and age 24 to 26 months, respectively. Five types of TMR were prepared with different roughage and concentrate ratios (R: C) as T₁=70:30, T₂=60:40, T₃=50:50, T₄=40:60, T₅=30:70. TMR intake, DM intake, CP intake of animals in T₂ group was significantly (P<0.001) higher. Significantly higher (P<0.01) DM and CP digestibility were observed in T₂. No significant differences observed for live weight gain. The ADG was slightly higher in T₂ group (0.860 kg/day) but no significant differences were found among the treatments. Based on the results, it may be concluded that using a 60:40 (R: C) TMR can be formulated for fattening bulls for proper growth and maintenance.

Keywords: Total mixed ration, Crop residues, Average daily gain, Nutrient digestibility, Nitrogen retention

Location: Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Calves

Objectives:

To know the effect of silage and soybean straw based total Mixed Ration (TMR) on the growth performances of growing bull calves.

Methodology:

The experiment was conducted for a period of 120 days at the research farm of Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh. The study was designed following complete randomized design (CRD) where a total of 30 growing bull calves were selected and divided in to 5 treatment groups having 6 bulls in each. It is noted that due to the shortage of required numbers of same genotype of bulls, 3 Pabna Cattle bulls and 3 RCC bulls were distributed to every treatment group considering their initial body weight ranges from 111.30±6.67 to115.66±10.69 kg and age 24 to 26 months respectively. Different types of TMR had been produced with different ratios of roughages composed of milled soybean straw and Napier-3) and concentrate composition as mentioned. The total mixed ration contained 16% CP. Soybean straw was collected from Noakhali district. Before preparation of TMR, soybean straw was milled through the roughage grinder and then mixed with concentrate ingredients. The concentrate mixture consisted of Wheat bran, Kheshari bran, Soybean meal, Salt and DCP. Before feeding in each day to the experimental animals, the silage portion of the TMR was mixed properly with the previously mixed soybean straw + concentrate manually. Different types of TMR were offered in each group twice daily, once in the morning at 8.00 am and rest in the afternoon at 4.00 pm. Fresh, clean and safe drinking water was available to the animals at all time. In middle of the feeding trial, a conventional digestibility trial was conducted considering 07 days adjustment period and 07 days collection periods. During the collection period, daily feed intake, feces and urine voided were recorded and collected individually. The samples of feeds and faeces were analyzed by the method of AOAC (2005) for determination of DM, CP, OM and Ash, while, ADF and NDF by Van Soest et al., (1991) and ME using Bomb Calorimeter. Urine samples were analyzed for Nitrogen and crude protein (CP). All the samples were analyzed in duplicate and mean values were recorded. Statistical analysis- There were five treatments with 6 replications (animals) in each group. Thus the design of the experiment was completely randomized design (CRD). The data were analyzed using the "SPSS 17.0" statistical program using one way ANOVA. Duncan's Multiple Range Test (DMRT) was done to compare among the treatment means for various parameters. Significant difference was declared when p<0.05

Source of Information: Bangladesh J. of Livestock Res. 21-25: 82-88, 2018

Article Link (Online Journal): DOI: https://doi.org/10.3329/bjlr.v0i0.45450

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present study revealed that the ration fed in T₂ 60:40 (R:C) are better compared to those ratio that fed to other groups in terms of intake, digestibility of different nutrients and that helps in proper growth and maintenance of growing bull.

Knowledge Management: Journal