אסיף מאגר המחקר החקלאי

Corticosterone and Fat Deposition in Broiler Chicks: Effect of Injection Time, Breed, Sex and Age

Year:

1982

Source of publication :

Authors :

Volume :

23

Co-Authors:

Bartov, I., Division of Poultry Science, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50-200, Israel

Facilitators :

Link :

Abstract:

1. Corticosterone (680 μg/kg body weight per day) given as six daily injections to 3- or 7-week-old chicks decreased weight gain, but increased food consumption, abdominal fat pad weight, skin dry matter, relative liver size and liver fat concentration. 2. Time of day of injection did not modify the response to corticosterone of 3-week-old chicks kept under natural daylight nor of 7-week-old broilers receiving additional illumination. 3. Pure White Rock chicks and Cornish x White Rock crossbred chicks resDonded similarlv to corticosterone iniections at 3 weeks of aee. 4. Seven-week-old female birds treated with corticosterone had significantly larger abdominal fat pads than similarly treated males. 5. Corticosterone injection was more effective in increasing the Dronortion of liver fat in 7-week-old birds than in 3-week-old thicks. 6. The increased amount of abdominal and liver fat due to corticosterone injections administered at 3 weeks of age disappeared after 3 weeks, but growth depression was still evident. © 1982, British Poultry Science Ltd.

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