Journal of Food, Agriculture and Environment

Exogenous leptin advances the recovery of regressed ovary in fasted layers

Author(s):

Hui Chen ¹**, Kang Bai ¹**, Ke-qian Di ^{1, 2}**, Lihua Li ¹, Shuai Ge ¹, Ren-lu Huang ¹*

Recieved Date: 2013-07-22, Accepted Date: 2013-10-14

Abstract:

The present study was undertaken to examine the effect of recombinant mouse leptin administered to fasted mature chickens of a layer strain on feed intake, ovarian development and body weight. Twenty-five Hy-Line Gray commercial hens were randomly divided into five groups: (I) ad libitum control group; (II) fasted control group; (III) fasted+low concentration of leptin; (IV) fasted+middle concentration of leptin; (V) fasted+high concentration of leptin. All four fasted groups fasted for 2 days and then ad libitum and the hens were treated with leptin at dose of 0, 50, 200 and 400 µg/kg/d. on day 3-5. The body weight of FC, F+L, F+M, F+H hens were 86.45%, 91.81%, 86.89% and 91.15% compared with initial body weight respectively on the day of 6. Feed intake, water intake and excretion of FC and F+H groups were lower compared with control group (P<0.05). A middle dose of leptin treatment significantly increased the plasma E₂ levels, follicular development and ovary weight, accompanied by decreased body weight. In conclusion, recombinant mouse leptin can promote the recovery of the regressed ovaries in fasting hens during the re-feeding period, which was reflected by higher ovary weight, better follicular development and higher plasma E₂ level. Improved recovery of the ovary was accompanied by decreased the body weight.

Keywords:

Exogenous leptin, ovary, fasted layer

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 1039-1042

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