REPROsheep: A model that integrates individual variability to optimise hormone-free reproduction management strategies for a dairy sheep flock
نویسندگان
چکیده
Managing reproduction of a dairy sheep flock without using hormones for oestrus induction and synchronisation is an alternative method that complies with agroecological principles, animal welfare public health concerns. However, shifting from conventional reproductive management to hormone-free philosophy means leaving more room individual intraflock variability in occurrence. The success establishing systems relies on managing the ewes’ responses, which are themselves influenced by characteristics. Therefore, so-called REPROsheep model was built study effects characteristics, such as age, body condition score (BCS) or milk yield, well overall productive performances flock. This dynamic agent-based (ABM) represents lactation processes context. Outputs at level were simulated this model. Two outputs (weekly number ewes lambing weekly yield) two punctual (total total simulated. Sensitivity analysis showed studied affected ewe pre-mating BCS milk-yield distributions Increasing average age 0.5 starting point 2.5 50 L 195 appeared increase, one breeding season, lambing, concentration those events over period, whereas decreasing value these factors same amount produce opposite effect. Management strategies favouring optimum BCS, good yield individuals flock, may thus be lever optimising performance, especially distribution time. seems relevant determine how strategy (affecting structure terms production potential) can impact performance context reproduction.
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ژورنال
عنوان ژورنال: Computers and Electronics in Agriculture
سال: 2021
ISSN: ['1872-7107', '0168-1699']
DOI: https://doi.org/10.1016/j.compag.2021.106412