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首页> 外文期刊>Poultry Science >The use of a live non-attenuated coccidiosis vaccine modifies Eimeria spp. excretion in commercial antibiotic-free broiler chicken flocks compared to conventional shuttle anticoccidial programs
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The use of a live non-attenuated coccidiosis vaccine modifies Eimeria spp. excretion in commercial antibiotic-free broiler chicken flocks compared to conventional shuttle anticoccidial programs

机译：使用活性非减毒的球虫病疫苗改变eimeria spp。 与常规的梭子间歇性计划相比，商业抗生素的肉鸡鸡群中排泄

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The objectives were to compare the effects of an antibiotic-free (ABF) program in commercial broiler chicken flocks using a live non-attenuated coccidiosis vaccine on fecal Eimeria spp. excretion and growth performances with those of conventionally raised commercial broiler chicken flocks. Fecal samples were collected every 3 d from 7 d of age to slaughter in 44 flocks of 7 participating farms for oocyst counts by the McMaster method. A live non-attenuated anticoccidial vaccine was administered by spray cabinet at the hatchery in ABF flocks only. Shuttle programs in conventional flocks consisted of in-feed chemical anticoccidials from 0 to 20 d of age, followed by polyether ionophores until slaughter. In-feed antibiotic growth promoters were included from the starter to finisher diets in conventional flocks only. Age of the flock at the oocyst excretion peak (AGE_PEAK) and the number of oocysts at that excretion peak (OPG_PEAK) were recorded. There was a significant difference of 2.7 d (P = 0.0001) for the AGE_PEAK, from 26.4 d in the conventional treatment to 23.7 d in the ABF program. There was no significant difference for the OPG_PEAK between the 2 treatments (P = 0.626). There was a significant decrease of 2.28 g in the average daily gain (P = 0.004) and increase of 0.08 for the feed conversion ratio (P & 0.0001) in the ABF program compared to the conventional program. There were no significant differences for body weights at slaughter (P = 0.0563), livability (P = 0.2694), and condemnations (P = 0.6775). From this study, it can be concluded that an ABF program using a live non-attenuated vaccine will show an earlier oocyst excretion peak compared to a shuttle program, but no significant effect was observed on the total number of oocysts at that excretion peak between the 2 programs.
机译：目标是使用在粪便eimeria spp上的活性未减毒的椰子植物疫苗比较商业肉鸡鸡群中的抗生素（ABF）程序的影响。与常规筹集的商业肉鸡鸡群的排泄和增长表现。每3岁收集粪便样品，从7天收集到44个参与农场的44个参与农场的屠宰，用于通过McMaster方法计数卵囊计数。仅在ABF群中的孵化场在孵化场的喷雾柜给药。常规羊群中的梭程序由0至20岁的饲料中的化学侵入细胞组成，其次是聚醚离子团直至屠宰。饲料中的抗生素生长促进剂仅包括在常规鸡群中的含有饮食中。记录卵囊排泄峰（Age_peak）的羊群的年龄和该排泄峰（OPG_Peak）的卵囊的数量。 Age_peak的2.7d（p = 0.0001）有显着差异，从26.​​4d在ABF程序中到23.7天。 2种治疗之间的OPG_PEAK没有显着差异（p = 0.626）。与传统程序相比，平均每日增益（P = 0.004）平均每日增益（P = 0.004）增加了2.28g的显着降低，并增加了ABF程序中的饲料转换比（P＆amp; 0.0001）。屠宰时体重没有显着差异（P = 0.0563），宜胜（P = 0.2694）和谴责（P = 0.6775）。从本研究中，可以得出结论，与穿梭程序相比，使用活性非减毒疫苗的ABF程序将显示出早期的卵囊排泄峰值，但在该排泄峰之间的卵囊总数上没有观察到显着效果2个计划。

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