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A Study On The Performance Of Broilers Under The Oral Administration Of Stilbestrol

By: Shahid Bashir | Jawad Ahmed Qureshi.
Contributor(s): Ehtisham Pervaiz.
Material type: materialTypeLabelBookPublisher: 1982Subject(s): Department of Livestock ProductionDDC classification: 0006,T Dissertation note: One hundred day old broiler chicks were reared upto the age of three weeks in similar conditions. Ninety birds of uniforms shape and size were selected randomly at the end of the third week of age. They were divided into three groups A, B and C with three replicates of each Group A and B were administered 10 mg and 20 mg of stilbestrol powder per pound of feed respectively. Group C remained as control. The treatment continued from 4th to 7th week of age and then was stopped till 8th week of age. From 4th week, weekly feed consumption and weight gain was recorded. At the end of 8th week following data was collected in comparison. 1. Feed conversion ratio; 2. Dressing percentage; 3. Analysis of meat for protein, fat, mineral (Ash) and moisture 4. Mortality percentage. As a whole highest feed consumption was observed in group B (20 mg stilbestrol per pound of feed). Highest weight gain was also observed in group B while the feed conversion ratio of the same groups was the present as compared to the group a (10mg of stilbestrol per pound of feed). Difference in dressing percentage was no significant in all the groups. In the analysis of meat from all the groups i.e. A, B & C, the protein and mineral percentages were without any significant difference Meat from the group B (20 mg stilbestrol per pound of feed) was significantly low in moisture percentage than group A (10 mg stilbestrol per pound of feed) and C (control). The fat percentage in the meat showed highly significant differences among all the three groups i.e. A (9.83%), B (10.96%) and C (8.5%). Meat of the group A and B had higher fat percentage due to the treatment with stilbestrol. Mortality was high in control group (13.3%) as compared to group A (3.3%) and B (3.3%).
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Item type Current location Collection Call number Status Date due Barcode Item holds
Thesis Thesis UVAS Library
Thesis Section
Veterinary Science 0006,T (Browse shelf) Available 0006,T
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One hundred day old broiler chicks were reared upto the age of three weeks in similar conditions. Ninety birds of uniforms shape and size were selected randomly at the end of the third week of age. They were divided into three groups A, B and C with three replicates of each Group A and B were administered 10 mg and 20 mg of stilbestrol powder per pound of feed respectively. Group C remained as control. The treatment continued from 4th to 7th week of age and then was stopped till 8th week of age. From 4th week, weekly feed consumption and weight gain was recorded. At the end of 8th week following data was collected in comparison.
1. Feed conversion ratio;
2. Dressing percentage;
3. Analysis of meat for protein, fat, mineral (Ash) and moisture
4. Mortality percentage.
As a whole highest feed consumption was observed in group B (20 mg stilbestrol per pound of feed). Highest weight gain was also observed in group B while the feed conversion ratio of the same groups was the present as compared to the group a (10mg of stilbestrol per pound of feed).
Difference in dressing percentage was no significant in all the groups.
In the analysis of meat from all the groups i.e. A, B & C, the protein and mineral percentages were without any significant difference
Meat from the group B (20 mg stilbestrol per pound of feed) was significantly low in moisture percentage than group A (10 mg stilbestrol per pound of feed) and C (control).
The fat percentage in the meat showed highly significant differences among all the three groups i.e. A (9.83%), B (10.96%) and C (8.5%).
Meat of the group A and B had higher fat percentage due to the treatment with stilbestrol.
Mortality was high in control group (13.3%) as compared to group A (3.3%) and B (3.3%).

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