Zakhayer-e Enghelab (Pastoral Nomads)

Zakhayer-e Enghelab (Pastoral Nomads)

Evaluation of the Effect of Estrus Synchronization Using Progesterone and PMSG on Reproductive Performance of Nomadic Sheep in Fars Province

Document Type : Article Extracted from Research Project

Authors
Abdolhamid Karimi 1
Seyedeh Hamideh Hosseini 2
Alireza Shemshiri 3
Zeynab Amirighanatsaman 4
Mohamadjavaf Agah 5
1 Associate Professor of Animal Sciences Department of Animal Science, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.
2 Ph.D. in Animal Nutrition, Animal Science Department, University of Zabol, Iran
3 Master of Rangeland and Head of Production Improvement of Nomads Affairs of Fars Province, Shiraz, Iran.
4 Department of Animal Science, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.
5 Associate Professor of Animal Sciences, Fars Research Center, Agricultural Research, Education and Extension Organization, Shiraz, Iran, Agricultural Research and Education Center and Resources.
10.22034/jzepn.2025.515640.1017
Abstract
Estrus synchronization is an important technique in reproductive management of livestock. Considering the weak reproductive management in nomadic herds and in order to improve the existing conditions, the aim of this project was to investigate the effect of estrus synchronization using progesterone and PMSG on the reproductive performance of nomadic sheep in Fars Province during the breeding season. This article was conducted in nomadic herds with 400 Turkish breed ewes during the breeding season. As the results indicate, there were significant differences among treatments in fertility rate, lambing rate, and twinning rate. Estrus synchronization in nomadic herds can be used as an effective strategy to achieve lambing synchrony, increase red meat production efficiency, concentrate lambing within the shortest possible period (maximum one month), improve feeding management for breeding ewes and lambs, enable better care during late pregnancy, lambing, and postpartum, and control lambing time throughout the year to make optimal use of pastures and other available feed resources. It can also help prevent the overlap of mating and lambing periods with seasonal migration in nomadic systems. However, to optimize this method, further research is recommended on the effects of estrus synchronization combined with supplementary feeding on the yield and composition of colostrum and milk in nomadic sheep flocks. This method, in addition to improving lambing synchrony and increasing production efficiency, enables better management of nomadic flocks and reduces costs associated with estrus and lambing asynchrony.
Keywords
Sponge Insertion
Progesterone
Nomadic Herd
Qashqai Turkish Sheep
Subjects
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