Small Ruminant Research ( IF 1.8 ) Pub Date : 2021-09-04 , DOI: 10.1016/j.smallrumres.2021.106518 Alexandr Torres 1 , Juan Capote 1 , María Fresno 1 , Alejandra Eguiza 2 , Emilio Barba 3 , José Manuel Molina 3 , Antonio Ruiz 3
Rearing strategies are key factors in the overall success of goat enterprises. In order to investigate the cost-benefit ratio of alternative methods for rearing and the impact on the course of Eimeria infections, 36 Canarian goat kids were subjected to three different regimes under field conditions. Two groups of animals were naturally reared with their mothers, feeding goat milk until weaning at 6 (Early weaning, EW) and 9 weeks of age (Traditional weaning, TW). In the remaining group, goat kids were artificially reared with a milk replacer until 9 weeks of age (Artificial feeding, AF). Coprological analysis were performed weekly to determine Eimeria oocyst shedding and, with the same frequency, changes in body weights and faecal consistency were recorded. Goat kids from group TW showed the best growth rate, while growth performance of groups EW and AF were statistical similar. Besides, compared to group TW, EW and AF management practices resulted in an overall increase of about 40 % and more than 100 % of the total number of oocysts excreted until the end of the experiment (week 15), respectively. Although the three experimental groups were infected with the same Eimeria species, differences in their oocysts excretion kinetics, including those of most pathogenic species, were observed throughout the experiment, indicating that the type of rearing may affect the outcome of underlying coccidiosis in the farm. Finally, the economic analysis determined that, mainly conditioned by the market price of goat milk, total operating costs per goat kid from groups EW (56.37 €) and AF (48.63 €) systems were considerably lower than those obtained in group TW (96.32 €). The selection of the former two rearing systems should be conditioned though to the use of management strategies preventing coccidiosis outbreaks.
中文翻译:
不同饲养系统对成本效益和艾美球虫的影响。加那利山羊孩子的感染
饲养策略是山羊企业整体成功的关键因素。为了研究替代饲养方法的成本效益比以及对艾美球虫感染过程的影响,在田间条件下对 36 只加那利山羊孩子进行了三种不同的治疗。两组动物与它们的母亲自然饲养,喂养山羊奶直至 6 岁(早期断奶,EW)和 9 周龄(传统断奶,TW)断奶。在其余组中,山羊孩子用代乳品人工饲养至 9 周龄(人工喂养,AF)。每周进行一次粪便学分析以确定艾美球虫卵囊脱落,并以相同的频率记录体重和粪便稠度的变化。来自 TW 组的山羊孩子表现出最好的生长速度,而 EW 和 AF 组的生长性能在统计上相似。此外,与 TW 组相比,EW 和 AF 管理实践导致在实验结束前(第 15 周)排出的卵囊总数分别增加了约 40% 和 100% 以上。虽然三个实验组感染了同一种艾美球虫在整个实验过程中观察到其卵囊排泄动力学的差异,包括大多数致病物种的卵囊排泄动力学,表明饲养类型可能影响养殖场潜在球虫病的结果。最后,经济分析确定,主要受山羊奶市场价格的影响,来自 EW 组(56.37 欧元)和 AF(48.63 欧元)系统的每个山羊孩子的总运营成本远低于 TW 组(96.32 欧元) )。前两种饲养系统的选择应以使用预防球虫病爆发的管理策略为条件。