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Growth Performance Meat Yield and Profitability of Broiler Chickens Fed Diets Incorporating Cassava Tuber Meal

F. Sultana
Department of Poultry Science, Bangladesh Agricultural University, Mymensingh

M. A. Ali
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh

I. Jahan
Department of Poultry Science, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A total of sixty, 14-day old broiler chickens (Cobb-500) of either sex were used in this study to assess the effects of processed cassava tuber meals (0, 15, 30, and 45 gkg^-1) on growth responses, meat yield, and profitability of boilers; rearing from day 14 to day 33 of ages. The experimental diets were iso-caloric and iso-nitrogenous in nature, and were supplied the broilers ad libitum throughout the trial period. Broilers fed on control diet (i.e. exclusion of CTM) achieved higher (P<0.01) body weight, while the broilers offered diets with the highest amount (45 gkg^-1) of CTM had the lowest body weight. Increased (P<0.01) feed intake was observed in the treatments of 21 d and 28 days of age when broilers fed diets with the supplementation of CTM, but no significant differences was found among the dietary treatments in the feed consumption of the broilers during 33 day of age. FCR differed significantly (P<.01) throughout the trial period, broilers fed diets without supplementation of CTM had the superior FCR than the others. Mortality was unaffected by all the dietary treatment groups. Moreover, different body parts (feather, head, neck, wing, viscera) and meat yields (thigh, drumstick, breast, back, giblet, dressing) were not influenced by treatments. Live weights were unaffected by all the dietary groups with/without incorporation of cassava tuber meals (CTM) up to day 21 and day 28 of ages. Statistically significant (P<0.01) decreased live weight was observed among the treatments in 33-day old birds.

Keywords: Broiler, Cassava tuber meal, Growth performance, Meat yield

Location: Poultry Farm of Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Start Date: 00-01-2011

End Date: 00-12-2011

Program Area: Animal Health and Management

Commodity: Chicken

Objectives:

1. The study focused on the processing cassava tuber meals (CTM) properly, and incorporated to broiler diet and finally evaluated the effects of CTM on growth performance and meat yield of boiler.

Methodology:

This experiment was carried out at the Poultry Farm of Bangladesh Agricultural University, Mymensingh- 2202, Bangladesh. A total of sixty, 14-day old commercial broilers (Cobb-500) having similar weights of 336.25±2.698 kg/b were collected from “Narish Poultry Farm”, Shreepur, Gazipur. 900 cm² of floor space was provided for each broiler. Continuous photo period of 23:30 hours was provided including the natural light and electrical bulb; and a dark period of 00:30 hour every day. Broilers were randomly distributed into four dietary treatment groups (T₁, T₂, T₃, and T₄) with three replications. The experimental diets were iso-caloric and iso-nitrogenous in nature, and were supplied the broilers ad libitum for 20 days of trial period. Broilers were fasted from feed and water for twelve hours prior to kill. After completion of bleeding, the slaughtered broilers were immersed in hot-water at 51-55 °C for 120 seconds in order to facile removal of feathers. Head, shanks, viscera, oil gland, kidneys, and lungs of the carcass were separated. Heart and liver were also removed from the remaining viscera; and quickly the gall bladder was cut off from the liver; and the pericardial sac and arteries were excised from the heart. The gizzard was removed by cutting from proventriculus and then cutting both incoming and outgoing tracts. Then, split was opened with knife, emptied and washed and the lining was removed by hand. Blood weight was calculated by deducting the slaughtered weight from the live weight of broilers after complete bleeding. Feather weight was calculated by deducting the complete defeathering broiler weight from the slaughtered weight of broilers. The weight of head, neck, viscera, heart, liver, gizzard, thigh meat, drumstick meat, back meat, and breast meat were determined individually by using the sensitive weighing balance. Dressing yield was calculated by subtracting the weight of blood, feathers, viscera and shank from the live weight. Giblet weight was the total weight of liver, heart, gizzard, lung and spleen. Dressed weights of broilers were calculated deducting the weights of head, neck and giblet from carcass All recorded and calculated data were statistically analyzed by MSTAT statistical computer package program in accordance with the principles of Completely Randomized Design. Least Significant (LS) differences were calculated to compare variations among diets where ANOVA showed significant differences.

Source of Information: J. Environ. Sci. & Natural Resources, 5(1): 47- 53, 2012; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Broilers fed on control diet (i.e. exclusion of CTM) achieved higher (P<0.01) body weight, while the broilers offered diets with the highest amount (45 gkg^-1) of CTM had the lowest body weight. Live weights were unaffected by all the dietary groups with/without incorporation of cassava tuber meals (CTM) up to day 21 and day 28 of ages.

Knowledge Management: Journal