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Evaluation of Lamb Production Potentiality of the BARInd, Jamuna River Basin and Coastal Region Sheep of Bangladesh Under Intensive Management

Sadek Ahmed
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

Md. Rezaul Hai Rakib
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

Morsheda Yesmin
Conservation and Improvement of Native Sheep Through Community and Commercial Farming (Component-A, Research 2nd phase) Project, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

Nasrin Sultana
Animal Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

Nusrat Jahan
Animal Biotechnology Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka-1349, Bangladesh

Md. Ershaduzamman
Conservation and Improvement of Native Sheep Through Community and Commercial Farming (Component-A, Research 2nd phase) Project, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh

Abstract/ Executive Summary:

Objective: This study was conducted to investigate the lamb production potentiality in terms of nutrient intake and utilization, growth performances, carcass characteristics and meat quality of three regional native sheep under intensive management condition. Materials and methods: A total of 24 growing lambs having 08 lambs from each group with 4 to 6 months of age were used in this study. 40% urea molasses straw (UMS) and 60% concentrate mixture of the total diet were supplied according to lamb body weight. The total feed was offered at 4.0% live weight on dry matter basis of each animal. The completely randomized design was used in this experiment. Results: The dry matter intake was significantly (P<0.01) lower but DM, OM, CP and ADF digestibility were higher (P<0.01) in Jamuna river basin group compared to other groups. All group having positive N-balance but significantly higher value (P<0.01) observed in Barind region sheep. Lower FCR (P<0.01) was found in Jamuna river basin group but it not differ significantly with Coastal group. Nevertheless, daily gain and total live weight gain were significantly (P<0.01) higher in Costal sheep. However, cost per kg gain, dressing percent, carcass characteristics and nutritive value of meat did not differ among the groups. Conclusion: All the regional sheep have the potentiality but coastal region sheep are more potential than other regional sheep for commercial lamb production in Bangladesh. The results of this study could be exploited by disseminating this to the wider stakeholders to develop entrepreneurship mechanism on sheep farming.

Keywords: Bengal sheep, Carcass, Lamb, Meat

Location: The Goat and Sheep Research Farm under Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh

Start Date: 00-06-2015

End Date: 00-09-2015

Program Area: Conservation and Biodiversity

Commodity: Goat, Sheep

Objectives:

To investigate the lamb production potentiality in terms of nutrient intake and utilization, growth performances, carcass characteristics and meat quality of three regional native Bengal sheep under intensive management conditions.

Methodology:

Ethical statement: The research work was conducted by following the principles of laboratory animal care (NIH publication No. 85-23, revised 1985). Experimental site: The experiment was carried out at the Goat and Sheep Research Farm under Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka-1341, Bangladesh during June 2015 to September 2015. Experimental animals: A total of twenty-four growing lambs with 4 to 6 months of age were randomly allocated in three different groups having eight lambs per treatment. All lambs were treated with anti-helminths (Index, Novartis, India) before the commencement of the experiment to ensure the lambs were free of intestinal worms. The lambs were reared in individual pens measuring 1.25 m2 (1.25 m × 1.0 m), and were provided individual feeder and water bucket. The lambs were allowed for 10 days of adjustment period during which they were gradually adapted with the experimental diets. Experimental diet and feeding management: The lambs were fed 40% Urea molasses straw (UMS) and 60% concentrate mixture according to their body weight. Rice straw was collected from central feed store of BLRI and chopped by scythe into the size of 2 to 2.5 inch for ease of feeding. Subsequently chopping rice straws were mixed with water, molasses and urea to prepare UMS. The conventional concentrate ingredients (broken maize, soybean meal, wheat bran, vitamin-mineral premix, DCP and salt) were procured from a local feed mill, and the dietary mixtures were prepared weekly for feeding the lambs. The concentrate mixture contained 42%broken maize, 38% soybean meal, 17%wheat bran,1%vitamin,1% DCP and 1%salt.All diets were formulated to meet the nutritional requirements of the growing lamb adjusted according to their live weight (NRC, 2007). The total feed was offered at 4.0% live weight on dry matter basis of each animal. UMS was offered to each animal 40% of total diet with 20% extra for ad libitum feeding. The required amount of UMS and concentrates were divided into two equal parts and the animals were supplied daily during morning and evening. The chemical compositions of the experimental diet are presented. Estimation of feed cost: The ingredients used in the experimental ration were rice straw, molasses, urea, broken maize, soybean meal, wheat bran, vitamin-mineral premix, di-calcium phosphate and common salt. Total cost per quintal of each experimental diet was calculated by taking into consideration the procurement price of various feed ingredients used and processing cost. Digestibility and nitrogen balance studies: These were carried out immediately after the growth trial; four sheep from each of the dietary group were randomly selected for determining digestibility of the feeds and nutrients using the total collection method during the last ten days of the trial. Metabolic trays were placed under individual pens for the collection of faeces and urine separately. Slaughter procedure and carcass sampling: At the end of the growth and digestibility trial, four sheep were randomly selected from each of the treatments for slaughtering. All the selected animals were fasted for 24 h and slaughtered according to the „Halal? method. Data collection: Different parameters like dry matter intake (DMI), live weight gain (LWG), feed conversion ratio (FCR), feed digestibility, carcass characteristics and meat quality of lambs were recorded. Live weight of each animal was recorded at the onset of the trial and later on weekly basis. Feed of known weight was offered and residual weights taken daily to determine total feed intake of animals. The duration of the growth trial was 90 days. Chemical analysis: Chemical compositions of the experimentally prepared diets are illustrated. Experimental diets and dried samples were ground and sieved using a 2 mm filter before analysis. Experimental design and statistical analysis: The experiment was arranged in a completely randomized design (CRD) and the data were analyzed using the software IBMSPSS Statistics 20. The differences were tested by DMRT test and significant differences were declared when P<0.05.

Source of Information: Journal of Advanced Veterinary and Animal Research, March 2018, Vol 5 No 1, Pages 37-43. ISSN 2311-7710 (Electronic)

Article Link (Online Journal): http://doi.org/10.5455/javar.2018.e243

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of feed intake, digestibility and FCR indicate that both Jamuna river basin and Coastal lambs are better for lamb production in Bangladesh. Although, feed cost per kg gain, carcass characteristics and nutritive value of meat did not vary among the different regional sheep but, Coastal lambs grow faster considering daily weight gain. Thus, it can be concluded that Coastal region sheep have more potentiality than other regional sheep for commercial lamb production in Bangladesh.

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