这项研究旨在评估在半干旱地区的单作和牧草灌溉系统中,在带有capim-tamani草的密集系统中,MoradaNova绵羊的牧草生产和摄食行为。18只成年绵羊,大约3岁,平均体重26.8±4.3公斤,被分配给在单一栽培中和在具有Caatinga树的silvopastoral系统中种植的capim-tamani草的处理。实验遵循完全随机的完全区组设计,有两个图和三个重复。牧草生产,消费,行为活动是评估变量。动物每天在上午6点至下午6点之间留在牧场中。未观察到单一栽培和牧草系统对capim-tamani草牧场的结构和生产特征的影响。也没有观察到对身体状况评分的影响,消费,以及两个系统中干物质(DM)和其他营养物质的消失率。然而,动物在单一文化和银牧系统中在阴凉处度过的时间之间存在相互作用。总的来说,动物们在树荫下呆了更多的时间,除了下午2点至4点之间,当时代相似的时候。平均而言,动物在单一培养系统中可用的人工遮荫中花费了大约15.6%(相当于1.87h)的总时间,而在森林放牧系统中,他们白天在牧场上度过的时间约有40%(五个半小时)保持在自然阴影下。相对于在牧场上花费的总时间,两个系统中的放牧频率约为70%(8.4h)。与单一栽培系统相比,capim-tamani草牧场在silvopastoral系统中与绵羊集中管理,显示出相似的饲料生产和消费。树木对动物全天暴露于太阳辐射的持续时间有积极影响。结果支持需要为绵羊提供遮荫,以及在半干旱地区推广这些可持续系统。
This study aimed to evaluate forage production and ingestive behavior of Morada Nova sheep in an intensive system with capim-tamani grass in both monoculture and silvopastoral irrigated systems in the Semi-arid region. Eighteen adult sheep, approximately 3 years old, with an average body weight of 26.8 ± 4.3 kg, were allocated to treatments with capim-tamani grass cultivated in monoculture and in silvopastoral systems with Caatinga trees. The experiment followed a completely randomized complete block design with two plots and three replications. Forage production, consumption, and behavioral activities were the assessed variables. The animals remained in the pasture daily between 6 am and 6 pm. No effects of the monoculture and silvopastoral systems were observed on the structural and productive characteristics of the capim-tamani grass pasture. There were also no observed effects on body condition score, consumption, and disappearance rate of dry matter (DM) and other nutrients in both systems. However, there was an interaction between the time animals spent under shade in monoculture and silvopastoral systems. In general, the animals spent more time under shade where there were trees, except during the period between 2 pm and 4 pm, when the times were similar. On average, the animals spent approximately 15.6% (equivalent to 1.87 h) of their total time in the artificial shade available in the monoculture system, whereas in the silvopastoral system, they remained under natural shade for approximately 40% (five and a half hours) of their time spent in the pasture during the day. The grazing frequency in both systems was approximately 70% (8.4 h) in relation to the total time spent in the pasture. The capim-tamani grass pasture managed intensively with sheep in the silvopastoral system showed similar forage production and consumption compared to the monoculture system. There was a positive influence of trees on the duration of solar radiation exposure to the animals throughout the day. The results support the need to provide shade for sheep, as well as to promote these sustainable systems in semi-arid regions.