Historical review and future opportunities for wider scaling of conservation agriculture in Tunisia.

In Tunisia, rainfed agriculture is facing the major challenges of low and irregular rainfall, as well as natural resources degradation. These are further accentuated by climate change. Changes in technical and management paradigms are needed to boost agricultural productivity. Since the early 1990s in Tunisia, a Conservation Agriculture (CA) system has been proposed as an adapted set of management principles to ensure more efficient and resilient agricultural production systems. In the last 20 years several research and development (R&D) projects have been implemented. Research findings in Tunisia show that the long-term adoption of CA allows increased crop yields and water use efficiency of cereals, enhanced soil biological life and soil organic carbon and reduced energy costs at farm level. Despite promising research results, adoption and up-scaling of CA in Tunisia has been rather modest (currently some 16,000 ha are managed under CA systems). The purpose of this book chapter is to summarize the previous R&D projects dealing with CA in Tunisia. It also aims to provide better insights into the complexity and potential ongoing solutions for integrating crops and livestock into CA systems. Crop-livestock systems dominate a large part of northern and central Tunisia where most of the rainfed field crops are produced.

Beef cattle behavior in integrated crop-livestock systems

ABSTRACT: Temperament often depends on the animals’ reaction to people, social and environmental conditions. However, little is known about the influence of changes in the pasture environment on cattle temperament. Thus, this study was designed to evaluate if an animals’ temperament changes in response to being kept in a silvopastoral system. This study evaluated the effect of the tree components in a pasture environment on the temperament of any grazing cattle in integrated crop-livestock systems. A total of thirty-two Angus steers were allocated to either a livestock (L) or livestock-forest (LF) system and observed from December 2019 to February 2020. Each animal was evaluated for their reactivity score, flight speed, and number of vocalizations. The statistical model established that the animals were random effects and that the treatments and periods were fixed effects using the MIXED procedure, and the means were compared using LSMeans. The flight speed and number of vocalizations were similar in both production systems, while the reactivity score was lower for animals kept in the LF system when compared to those in the L system. This suggested that the LF system interferes positively with the animal’s temperament in relation to the L production system. However, additional research is needed to understand the influence of the production system on animal temperament.