Published in Scientific Papers. Series D. Animal Science, Vol. LXVIII, Issue 1
Written by Tudor POPA, Ellda Mellisa SAVU, Raluca-Aniela GHEORGHE-IRIMIA, Dana TĂPĂLOAGĂ, Cosmin ȘONEA, Makki Khalaf Hussein AL DULAIMI, Eugen Adrian CHISA, Paul-Rodian TĂPĂLOAGĂ
The physiological basis for lambing intensification is rooted in the reproductive physiology of ewes, which governs lambing intervals and is influenced by factors such as photoperiod and seasonal breeding patterns. Strategies for intensification include the implementation of accelerated lambing systems, which utilize hormonal treatments and photoperiod manipulation to achieve three lambings within two years. Genetic selection for prolific breeds, such as Finnsheep and Romanov, is emphasized as a critical component of breeding programs aimed at enhancing lamb output. Nutritional management strategies, including flushing and balanced diets during gestation and lactation are also discussed as vital for improving reproductive efficiency. Furthermore, the application of reproductive technologies such as artificial insemination, embryo transfer, and oestrus synchronization techniques is highlighted to achieve tighter lambing windows and increased reproductive rates. Despite the potential benefits of lambing intensification, several challenges and limitations must be addressed. Health and welfare concerns arise from the increased metabolic demands placed on ewes, leading to risks of reproductive exhaustion and poor maternal care. Additionally, the management of diseases associated with higher lambing frequencies, such as mastitis, is critical. Economic constraints, including increased labour demands and costs associated with feed and veterinary care, pose further challenges to the adoption of intensive systems. In conclusion, this paper aims to elucidate the intricate interplay between physiological mechanisms, management strategies, and the challenges faced in advancing lambing intensification, ultimately contributing to the sustainability and productivity of sheep farming systems.
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