Abstract
To minimize the production cost of poultry and poultry products, it is important to formulate low cost balanced ration utilizing unconventional feed resources. Therefore, the experiment was carried out to measure the effect of substituting soybean meal (SBM) by different levels of shrimp head meal (SHM) to the ration of growing layer pullets. A control corn-soybean layer grower (pullet) diet and four different levels of SHM included diets as substitution of SBMwere fed to five groups of Hisex White pullets from 5th to 18th weeks of age. All groups of pullets fed isocaloric feeds (2765 Kcal kg-1). The control group T0 (0 % SHM+20 % SBM) received grower ration formulated with traditional feed ingredients with no substitution of SBM. The SBM contents of other treatment groups were substituted at the rate of 25 %, 50 %, 75 % and 100 % by the SHM and were adjusted as 5 % SHM+15 % SBM (T1), 10 % SHM+10 % SBM (T2), 15 % SHM+5 % SBM (T3) and 20 % SHM+0 % SBM (T4) keeping other ingredients constant as of control. Cumulative feed intake increased with the increasing level of SHM of diets. Feed cost and mortality rate decreased with the increasing level of SHM in the ration. Significantly lowest FCR at most of the age categories, highest cumulative body weight (p<0.05) at 18 weeks and highest weight at maturity (p<0.05) were found in treatment group fed 5 % SHM. Therefore, it can be concluded that substitution of 25 % SBM of the ration by SHM is suitable for the better performance of growing layer pullets.
 SAARC J. Agri., 18(2): 125-137 (2020)
Highlights
Feed cost which accounts for 65-75 % of the total cost of poultry, egg and meat production remains the major factor limiting the development and expansion of poultry farming (Kirkpinar and Acikgoz, 2018).to keep the prices of poultry and poultry products within the capacity of people, it is important to formulate low cost balanced ration utilizing unconventional feed resources
Rahman and Koh (2014) reported head meal from black tiger shrimp (Penaeus monodon) as the second most nutritious source in poultry diets as compared to other waste parts of shrimp.Aktar et al (2011) substituted the fish meal of broiler ration by shrimp meal and found that shrimp meal improved live weight and feed conversion but reduced feed intake. They reported reduced feed cost and improved profitability by complete substitution of fish meal by shrimp meal.Results of another experiment revealed that body weight gain of broilers decreased with increasing level of shrimp head meal (SHM) (p
The increasing tendency of feed intake with increasing the level of SHM is might be due to the aroma content of SHM which may increases the palatability of feed
Summary
In Bangladesh, poultry and poultry industries are contributing to a great extent in our national economy through providing food and nutrition, cash income and create employment opportunities. Rahman and Koh (2014) reported head meal from black tiger shrimp (Penaeus monodon) as the second most nutritious source in poultry diets as compared to other waste parts of shrimp.Aktar et al (2011) substituted the fish meal of broiler ration by shrimp meal and found that shrimp meal improved live weight and feed conversion but reduced feed intake. They reported reduced feed cost and improved profitability by complete substitution of fish meal by shrimp meal.Results of another experiment revealed that body weight gain of broilers decreased with increasing level of SHM (p
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