Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Combined Use of Dietary Probiotic and Acidifier for the Production of Antibiotic Free Broiler

Abdullah Al Masud
Department of Poultry Science, Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Md Shawkat Ali
Department of Poultry Science, Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Muslah Uddin Ahammad
Department of Poultry Science, Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

The effect of feeding probiotic (Bio-Top; Bacillus subtilis and Bacillus licheniformis), acidifier (Sal-Stop), antibiotic growth promoter (AGP) or probiotic plus acidifier was investigated in commercial broiler. A total of four hundred Cobb 500 day-old straight run chicks were randomly distributed to 5 different dietary groups having 4 replications each. The number of birds in each replication was 20. The five dietary groups were as control (basal diet; BD), BD containing AGP at a level of 20g/100kg, BD containing probiotic at a level of 200g/100kg, BD containing acidifier at a level of 200g/100kg; and BD containing an equal amount of probiotic plus acidifier (200g/100kg). Broilers that received either probiotic, acidifier or a mixture of probiotic and acidifier (1:1) exhibited higher body weight gain, lower feed conversion ratio (FCR) and higher cost effectiveness compared with the broilers fed on control diet (P<0.05). However, feeding of diet containing both probiotic and acidifier resulted in the highest growth rate and net profit in all dietary regimens. Broilers fed on probiotic and acidifier in a mixture had FCR similar to other treatment groups. This study indicated that the diet containing probiotic-acidifier mixture seems to be more cost-effective in promoting growth performance of broilers, as an alternative to the AGP, as compared to the use of probiotic or acidifier alone in the diet.

Keywords: Probiotic, Acidifier, Antibiotic growth, Promoter, Broiler

Location: Bangladesh Agricultural University Poultry Farm.

Start Date: 06-08-2015

End Date: 09-09-2015

Program Area: Animal Health and Management

Commodity: Chicken

Objectives:

To compared the effectiveness of individual supplements and synergistic combination of probiotic (Bio-Top) and acidifier (Sal -Stop) as alternative to AGP in broiler diet.

Methodology:

The experiment was conducted in a gable type open sided house. The room area was 500sq.ft. The room was partitioned into 20 pens of equal size using wire net. Area of each pen was 20 sq. ft. (10 feet x 2 feet). A total of 400 day - old straight run Cobb 500 commercial broiler chicks were purchased from the Mono Hatcheries Ltd., Mowna, Gazipur, Dhaka, to carry out this research work. The experiment was conducted at the Bangladesh Agricultural University Poultry Farm for a period of 35 days from 06 August 2015 to 09 September 2015. Broiler starter and grower diets were formulated and manufactured in Poultry Farm feed unit. Starter diet was provided from day old to 21 days and grower diet was provided from 22 days to 35 days. Composition of the ingredients used in starter and grower diet is shown. Probiotic product used in this study is imported in Bangladesh by Pharma and Firm Co. Ltd., Dhaka. Probiotic was included in the basal diet at a rate of 200g/100kg of mixed feed. The acidifier (Sal - Stop; Impextraco, Belgium) product used in this study is imported in Bangladesh by Century Agro Ltd., Dhaka, Bangladesh. Acidifier was included in the basal diet at a rate of 200g/100 kg of mixed feed. It is a synergistic combination containing salts of propionic acid, acetic acid, formic acid, sorbic acid, lactic acid, phosphoric acid and their free acids, completed with emulsifiers and natural extracts. It contains free fatty acids on a silica carrier. Renamycin (Rena ta Ltd., Dhaka, Bangladesh) was used in this study as an AGP. Each gram of Renamycin soluble powder contains oxytetracycline USP 200 mg. The inclusion rate of the product was 200g/ton of mixed feed. The experiment was conducted during August to September 2015. The environment al temperature was a little bit lower than the recommended brooding temperature. So, additional heat was provided to chicks. The chicks were brooded in respective pens using one 100 - watt electric bulb in each pen. The chicks were provided with a temperature of 35 °C at first week of age, decreasing gradually at a rate of 3°C per week and continued up to 4 weeks of age. The room temperature and humidity w as measured by an automatic thermo - hygrometer. Fresh and dried rice husk was used as litter material and spreaded over the floor at a depth of 3 cm. After first two weeks, upper part of the litter mixed with droppings was removed and replaced with new litter. At the end of 3 weeks, old litter was totally replaced by new litter. After 14 days, litter was stirred in every alternative day to dry up quickly and to remove harmful gases. Starter diet was provided for the first 21 days and then grower diet was provided to the broiler up to 35 days of age. In all cases, feeds were offered ad libitum to all broilers. Feed was supplied four times daily; once in the morning, noon, afternoon and again at night in such a way that feeder was not kept empty. Fresh and clean water was made available at all times. The broilers were exposed to a continuous lighting period of 23 hours and a dark period of 1 hour in each 24 hours. The dark period provision was made to keep the broilers familiar with darkness in the failure of electricity, if happens. Birds were weighed at the first day of experiment (initial body weight) and weekly basis for all birds from each replication. Average body weight gain of the broiler in each replication was calculated by deducting initial body weight from the final body weight. The amount of feed consumed by the birds in each replication of each treatment group were calculated for every week by deducting the amount of feed left over from the amount supplied for a particular week. FCR was calculated as the unit of feed consumed per unit of body weight gain. The cost of broiler production for each treatment group was calculated based on the market price of feed ingredients, cost of chicks, cost of probiotic, acidifier etc., at the time of this experiment. For analysis of exact cost involved in broiler production, some other factors such as electricity, litter material, vaccination, medication, labour and even the depreciation cost of structure were also considered. Profit was calculated per broiler and per kg broiler basis by excluding total cost of production from the total sale price of bird. Data on body weight, body weight gain, feed consumption and FCR of broilers were subjected to analysis of variance (ANOVA) in a completely randomized design (CRD) employing SAS (2009) statistical package program.

Source of Information: Res. Agric., Livest. Fish.3(1): 127-137, April 2016, ISSN: 2409-0603

Article Link (Online Journal): DOI: http://dx.doi.org/10.3329/ralf.v3i1.27867

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Neither probiotic nor acidifier used in the current study had any significant effect on live weight, feed intake and FCR of broilers up to two weeks of age. Use of probiotic and acidifier singly or combindly resulted in increased live weight and decreased FCR after 14 days of age. However, combined use of probiotic and acidifier was superior in terms of live weight, FCR and cost - effectiveness over their use in the diet singly. It is therefore concluded that combining the probiotic with the acidifier exhibited an additive benefit in growth performance of broilers and profitability of broiler production.

Knowledge Management: Journal