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The effect of energy intake level, body condition score, and leptin on ovulation rate in fat-tailed ewes

Published online by Cambridge University Press:  20 November 2017

A. Towhidi ,
F. Rostami ,
H. Khazali  and
A.H. Ahadi
A. Towhidi*
Affiliation:
Animal Science Research Institute, P.O.Box # 31375-178, Karaj, IranEmail Department of Animal Science, Tarbiat Modares University, P.O.Box # 14155-4838, Tehran, Iran Department of Animal Science, Iranian Research Organization for Science and Technology, P.O.Box # 13135-115, Tehran, Iran
F. Rostami*
Affiliation:
Department of Animal Science, Tarbiat Modares University, P.O.Box # 14155-4838, Tehran, Iran
H. Khazali
Affiliation:
Department of Animal Science, Tarbiat Modares University, P.O.Box # 14155-4838, Tehran, Iran
A.H. Ahadi
Affiliation:
Department of Animal Science, Iranian Research Organization for Science and Technology, P.O.Box # 13135-115, Tehran, Iran
*
armintow@yahoo.com
farrostami@hotmail.com
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Extract

Ovulation rate (OR) is depended to energy intake level (EIL) and body condition score (BCS) in ewe (Gordon, 1997). There is a high correlation between BCS and plasma leptin concentration (PLC) in sheep (Blache et al, 2000). Corresponding to leptin is a metabolic stimulant for reproduction (Barb et al, 1999), it is possible that leptin is involved in the ovulation rate in ewe. Therefore, first experiment was conducted to study the effect of EIL on body weight (BW), BCS, OR and PLC in a long period, and second experiment was designed to investigate the effect of EIL and leptin administration on OR in a short period in fat-tailed Shal ewes.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 80
Copyright
Copyright © The British Society of Animal Science 2003

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References

Barb, C.R., Barrett, J.B., Kraeling, R.R. and Rampacek, G.B. (1999). Role of leptin in modulating neuroendocrine function: A Metabolic link between the brain-pituitary and adipose tissue. Reproduction of Domestic Animal 34: 111–125 Google Scholar
Blache, D., Tellam, R.L., Chagas, L.M., Blackberry, M.A., Vercoe, P.E. and Martin, G.B. (2000). Level of nutrition affects leptin concentration in plasma and cerebrospinal fluid in sheep. Journal of Endocrinology 165: 625–637.Google Scholar
Gordon, I. (1997). Controlled reproduction in sheep and goat. first edn. CAB International.Google Scholar