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Effect of Supplemented Dietary Protein on Certain Haematological Values and Meat Yield Characteristics of Broiler Birds .

M. S. Alam
Department of Physiology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

N. Ahmad
Department of Physiology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Miah
Department of Physiology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

R. Islam
Department of Physiology, Pharmacology and Biochemistry, Dinajpur Government Veterinary College, Dinajpur

Abstract/ Executive Summary:

The effect of different levels of supplemented dietary protein on body weight, certain haematological values and meat yield characteristics in 20 "Shaver Star Bro" broilers was studied during the period from 02 March to 12 April 2002. The broilers were randomly assigned to four equal groups (A to D) each consisting of 5 birds. Group A was considered as control, fed only with commercial ration and other three groups were treated with extra dietary protein supplement@ 5%, 10% and 15% as group B. C and D respectively. Increased body weight was recorded in group B and the body weight decreases as the level of protein increased from 5% to 10% and 15% and the decrease was linear. No differences in haematological values were observed among the groups but the TEC varied significantly (p < 0.05). The mean weight of breast meat, drum stick meat varied significantly (p < O.Ql). The shank weight varied significantly (p < 0.05) but there was no significant difference among the mean weight of thigh meat and wing meat corresponding to the different levels of supplemented dietary protein. It can be concluded that 5% supplemented dietary protein with commercial ration gives better result in respect to body weight gain, haematological values and meat yield characteristics.

Keywords: Dietary protein, Haematological values, Meat yield, Broiler birds

Location: BAU, Mymensingh

Start Date: 02-03-2002

End Date: 12-04-2002

Program Area: Animal Health and Management

Commodity: Chicken

Objectives:

This experiment was undertaken to assess the effect of protein supplementation on growth performance, meat yield characteristics and haematological parameters (TEC, ESR, PCV, Hb, DLC) of broiler birds.

Methodology:

A total of 20 "Shaver Starbro" broiler chicks were used to find out the effect of different dietary levels of protein on growth, meat yield and haematology. For this purpose, day-old chicks were purchased form local market of Mymensingh on 2 March 2002 and the birds were reared throughout the entire period of study upto 12 April 2002 in the well ventilated, well protected condition. The broiler chicks were fed with standard commercial ration (Quality Feed Ltd., Dhaka, Bangladesh). At the age of 23, these experimental birds were randomly divided into four equal groups (A to D) each consisting of 5 birds. Group A considered as control group fed with commercial ration and other groups were treated with supplemented protein (Jasoprot protein concentration 60%, Jayson Agrovet Ltd.) @ 5% (group B), 10% (group C) and 15% (group D) with commercial feed for next 21 days. Initial body weight of each bird was recorded prior to experiment and also recorded at 7 days interval up to the end of experimentation. These experimental broiler birds were maintained by standard management practices. In order to prevent stress, shock, deficiencies and infections, vitamin-mineral premix and antibiotic. were used as per recommendation of manufacturer. Each of the birds of all four groups was also immunized against Gumboro and Ranikhet disease ( BCRDV® on day 5 & 18, Nobilis® Gumboro D-78 on day 11 & 21). At the end of the experiment the birds were scarificed'to collect blood sample and different meat yield characteristics. The haematological studies were performed within two hours of blood collection according to the method described by Lamberg and Rothestein (1977). To study the meat yield characteristic the birds were dissected according to the procedure of Jones et al. (1979). Breast meat with keel bone, thigh meat with thigh bone, drumstick meat with drumstick bone, wing meat with wing bone and bread shank were separated, and were weighed by electrical weight machine and were expressed in percent of the live weight. Data were analyzed statistically to find out significant difference. A randomized complete block design with more than one observation per cell is applied. Least significant difference (LSD), F-test and Student's 't'-test were done according to the procedure as described by Steel and Torrie ( 1980).

Source of Information: Bangl. J. Vet. Med. (2004). 2 (2): 121-123

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The mean weight of breast meat, drum stick meat varied significantly (p < O.Ql). The shank weight varied significantly (p < 0.05) but there was no significant difference among the mean weight of thigh meat and wing meat corresponding to the different levels of supplemented dietary protein. It can be concluded that 5% supplemented dietary protein with commercial ration gives better result in respect to body weight gain, haematological values and meat yield characteristics.

Knowledge Management: Journal