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

by Shahid Bashir | Jawad Ahmed Qureshi | Ehtisham Pervaiz.

Material type: book Book; Format: print ; Literary form: not fiction Publisher: 1982Dissertation 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%). Availability: Items available for loan: UVAS Library [Call number: 0006,T] (1).

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Bioavailability Of Tylosin Tartrate After Flock Medication Via Drinking Water In Broilers

by Shahid Bashir | Prof.Dr.Muhammad Ashraf | Dr. Muhammad | Dr. Muhammad Ovais Omer.

Material type: book Book; Format: print Publisher: 2004Dissertation note: Microbiological assay was used to determine the biological availability of tylosin tartrate in broiler chickens with bascillus subtillus as a test organism. Two groups of birds were made (A & B). Group A was medicated with Tyloexcel and group B with Tyleco soluble. Then blood samples were collected serially. Plasma concentration was found by using microbiological assay and the obtained data was compared with published pharmacokinetic data. Stability of two products (using the same technique) showed both products are equally stable in water and no significant difference is between these two products. In the present research Maximum time (tmax) 2 hours for tylosin obtained after oral administration indicates that using this antibiotic with driking water in broiler chickens is the method of choice. However, relatively, low value of Maxmimum plasma concentration (Cpmax) 1.28±0.030 g/ml (Tyloexcel) and 1.2±0.025 g/ml (Tyleco soluble) after oral administration of tylosin shows that dosing of this antibiotic in chickens should be higher than in other food producing animals. Availability: Items available for loan: UVAS Library [Call number: 0944,T] (1).

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