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Effects of Gonad Removal on Commercial Broilers of 20-week-old

M. A. Rahman
Department of Poultry Science, Bangladesh Agricultural University Mymensingh

Abstract/ Executive Summary:

Two hundred day-old commercial, broiler chicks were used to find out the effect of early gonadectomy on the selected parameters. Gonad removal had no-significant effect on 20-week body weight of either sex, However. significant difference in abdominal fat pad were noticed in male broier but net.in female. Significantly reduced comb score was evident in bilaterally gonadectomized males. Reduced hematocrit and bone ash values were observed in 20 week old gondectomized males. No significant differences were noticed in breast tissue moisture between bilateral gonadectomized and control birds of either 'sex. Percent fat of breast tissue was not altered in either sex by gonadectomy.

Keywords: Broiler. Gonadectomy. AbdominaI fat.

Location: Bangladesh Agricultural University, Mymensingh

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Poultry

Objectives:

To investigate the effects of bilateral gonadectomy on the performances of body weight gain, abdominal fat deposition, and on selected physiological and anatomical parameters.

Methodology:

Two hundred day-old broiler chicks were wing - banded and randomly divided by sex into 4 treatment groups and placed in battery brooders which provided feed and water adlibitum Prior to surgery', all 3 day old chicks were anesthetized and subjected to removal of the left testis and left ovary. At 10 days of age, the same procedure was repeated on the opposite side. To evaluate broiler; growth performance, and body weights were recorded weekly through 20 weeks of age, after that birds of each sex from each treatment group were sacrificed. Abdominal fat. bursa weight, shank length and comb score were determined at this time. In addition, the left leg of each bird fro.n each treatment group was removed for bone ash determination after sacrificing the birds. The blood sample were used to deter- mine packed cell volume using the micro- hematocrit capillary tube method following centrifugation. Breast tissue fat were determined using a modification of the soxhlet extraction method (AOAC, 1980). The birds were reared up to 20 weeks of age to measure the effects of some physiological and anatomical parameters. The data of the experiment were analyzed using Analysis of variance techniques and where necessary, means were separated by using DMRT.

Source of Information: Bangladesh Journal of Agricultural Science. Vol 16, (No-2), pp: 243-246, July-1989,, ISSN 0379-4296,

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The effects of gonad removal on breast tissue composition of 20 week -old broiler chickens are also shown No significant difference was found in percent moisture or percent fat (Wet or dry-weight basis) within the male or the female treatment groups.

Knowledge Management: Journal