Role Of Synthetic Estrogens (Diethylstilbestrol) On The Performance Of Broiler Chicks
By: Waseem Zia, M
| Dr. Nisar Ahmed.
Contributor(s): Dr. Anjum Khalique | Dr. Muhammad.
Material type: 
BookPublisher: 1994Subject(s): Department of Animal NutritionDDC classification: 0454,T Dissertation note: A study was undertaken to investigate the effect of different levels of diethyistilbestrol on the performance of broiler chicks. The performance of the broilers were studied under the headings of weight gain, feed consumption, feed efficiency, dressing percentage, market finishing and carcass quality, Tenderness and juiciness, residual effect of the hormone, economics and mortality.
Four different levels 0mg, 10mg, 15mg and 20mg of diethyistilbestrol hormone were tried on one hundred and eighty day old broiler chicks, divided into four different experimental groups A, B, C and 1). 1-lormone was implanted at the age of 29 days and the birds were kept for further two weeks after the implantation of the hormone upto the age of 42 clays.
Non significant difference was noticed among weight gain, feed consumption and feed efficiency of chicks before the implantation of the hormone upto 28 days of age but presented significant difference among weight gain and feed efficiency after the implantation of the hormone (from 29-42 days of age). Feed consumption showed non significant difference but Dressing percentage, Marketing finishing and carcass quality and tenderness and juiciness presented significant differences after implantation of the hormone.
It was concluded that hormone implantation significantly affected the growth rate, feed efficiency, dressing percentage, market finishing and carcass quality, tenderness and juiciness of the meat and 15 rng level of the hormone proved best for implantation which
was comparatively cheaper and cost per kg. of live weight was decreased at this level. Therefore, net profit per chick was greater. No residual effect of the hormone was detected in the meat.
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 0454,T (Browse shelf) | Available | 0454,T |
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A study was undertaken to investigate the effect of different levels of diethyistilbestrol on the performance of broiler chicks. The performance of the broilers were studied under the headings of weight gain, feed consumption, feed efficiency, dressing percentage, market finishing and carcass quality, Tenderness and juiciness, residual effect of the hormone, economics and mortality.
Four different levels 0mg, 10mg, 15mg and 20mg of diethyistilbestrol hormone were tried on one hundred and eighty day old broiler chicks, divided into four different experimental groups A, B, C and 1). 1-lormone was implanted at the age of 29 days and the birds were kept for further two weeks after the implantation of the hormone upto the age of 42 clays.
Non significant difference was noticed among weight gain, feed consumption and feed efficiency of chicks before the implantation of the hormone upto 28 days of age but presented significant difference among weight gain and feed efficiency after the implantation of the hormone (from 29-42 days of age). Feed consumption showed non significant difference but Dressing percentage, Marketing finishing and carcass quality and tenderness and juiciness presented significant differences after implantation of the hormone.
It was concluded that hormone implantation significantly affected the growth rate, feed efficiency, dressing percentage, market finishing and carcass quality, tenderness and juiciness of the meat and 15 rng level of the hormone proved best for implantation which
was comparatively cheaper and cost per kg. of live weight was decreased at this level. Therefore, net profit per chick was greater. No residual effect of the hormone was detected in the meat.
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