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首页> 外文期刊>Poultry Science >Impact of Skip-a-Day and Every-Day Feeding Programs for Broiler Breeder Pullets on the Recovery of Salmonella and Campylobacter following challenge
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Impact of Skip-a-Day and Every-Day Feeding Programs for Broiler Breeder Pullets on the Recovery of Salmonella and Campylobacter following challenge

机译：肉鸡饲养案件的影响和每日喂养程序的影响对挑战后沙门氏菌和弯曲杆菌的恢复

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The impact of restrictive feeding programs on Salmonella and Campylobacter colonization and persistence after challenge was investigated for broiler breeder pullets housed in an experimental rearing facility. Pullet-chicks were placed on litter in 3 feeding program rooms and each room contained 2 replicate pens. The feeding programs were: (1) Skip-aday in trough feeders (SAD); (2) Every-day in trough feeders (EDT); (3) Every-day on the pen litter (EDL). On d 1, an additional group of hatchmate chicks were housed in a separate room and gavaged with Salmonella Typhimurium, to later serve as seeder chicks. After seeders were confirmed Salmonella-positive at wk 4, at wk 5 seeders were placed into each feeding program pen to commingle with 135 penmates. At 7, 9, 11, 17, 18, and 20 wk the litter surface in each pen was sampled using intermittently stepped-on drag-swabs. At 8, 12, 16, and 20 wk of age the ceca were sampled from 10 penmates/pen and 2 pooled spleen samples/pen were collected. SAD litter remained Salmonella-positive through 20 wk of age while EDL and EDT pens had no detectible litter Salmonella recovery by 18 and 20 wk. EDL fed pens had no direct (&10(2) cfu/mL) litter Salmonella recovery during the entirety of the experiment. Salmonella prevalence for ceca from SAD pullets was significantly (P & 0.05) higher at 8 wk (70%) compared to EDT (40%) and EDL (30%). At wk 12, SAD pullets for both on and off-feed sampling days had significantly higher Salmonella recovery (40%), compared to EDT and EDL (both at 5% recovery). By 16 and 20 wk, only the SAD pullets on the on-feed day (48 h without feed) had recovery of Salmonella at 20%. Salmonella recovery in pooled spleen samples did not appear associated with feeding treatments (22% positive). The remaining pullets challenged with Campylobacter at 21 wk produced similar trends as was seen for Salmonella. SAD program pullets had significantly higher Campylobacter from ceca (80 to 100%) compared to pullets on EDL (30 to 60%) or EDT (40 to 95%). These results suggest that using a Skip-a-Day feeding program for broiler breeder pullets contributes to persistently higher Salmonella and Campylobacter ceca colonization and litter prevalence.
机译：研究了在实验饲养设施中的肉鸡繁殖者拔管，研究了限制性喂养程序对沙门氏菌和弯曲杆菌的影响和持续性。在3个饲养的节目室和每个房间都有2个复制笔的垃圾箱放在垃圾上。喂养程序是：（1）在槽送料器（悲伤）中跳过Aday; （2）每天在槽喂食器（EDT）; （3）每天在笔窝（EDL）。在D 1上，将另外一组孵卵小鸡饲养在一个单独的房间里，并用沙门氏菌毒蕈尿，以后用作播种器小鸡。在将播种机确认在WK 4处的Salmonella阳性后，将WK 5播种机置于每个馈送中，用135个穿孔将饲料笔中的。在7,9,11,17,18和20WK中，使用间歇地踩踏拖动拭子进行对每笔的凋落物表面进行采样。在8,12,16和20周龄，CECA被从10个香脂酸盐/笔和2个合并的脾样品/笔中取样。悲伤的垃圾仍然是20羊的阳性，而EDL和EDT钢笔没有可测量的垃圾沙门氏菌恢复18和20周。 EDL美联储笔在整个实验期间没有直接（＆amp; 10（2）cfu / ml）凋落物恢复。与EDT（40％）和EDL（30％）相比，来自悲伤鳞片的CECA的Salmonella peeca的患病率显着（p＆amp; 0.05）。在WK 12中，与EDT和EDL（均为5％回收率）相比，用于接通和越野采样天的悲伤垫片具有显着更高的沙门氏菌恢复（40％）。达到16和20周，只有在饲养日（48小时没有饲料）的悲伤母产物，恢复了沙门氏菌20％。合并的脾样品中的沙门氏菌恢复没有与喂养治疗有关（22％阳性）。在21周的弯曲杆菌挑战的剩余瓶子产生了类似于沙门氏菌的类似趋势。与EDL上的瓶子（30至60％）或EDT（40至95％）相比，悲伤的节目案例与CECA（80至100％）的弯曲杆菌显着更高。这些结果表明，使用肉鸡饲养案例的船长喂养程序有助于持续更高的沙门氏菌和CECA殖民化和凋落性普遍性。

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