Investigating the effects of dietary probiotic feeding regimens on broiler chicken production and Campylobacter jejuni presence.
Investigating the effects of dietary probiotic feeding regimens on broiler chicken production and Campylobacter jejuni presence.
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DOI：
10.3382/ps.2006-00458
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发表时间：
2008-04
期刊：
影响因子：
4.4
通讯作者：
W. Willis;L. Reid
中科院分区：
文献类型：
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作者：
W. Willis;L. Reid
进行了一项实验，研究限制饲喂市售益生菌日粮对肉鸡生产/加工性能、空肠弯曲菌患病率和器官重量的影响。 540 只 1 日龄肉鸡被随机分配至对照或直接饲喂微生物（PrimaLac，DFM）日粮，并接受随意全饲 (A)、限制 8 小时 (R) 或隔日饲喂 (S) 饲喂方案。 6 个处理各重复 3 次，每栏 15 只雄性雏鸡和 15 只雌性雏鸡，持续 49 d。在第 49 天显着 (PR>S)，而雌性体重在方案 A 和 S 中没有差异。方案 R 的对照雌性体重显着高于方案 A 和 S 中的体重。对照方案 A 中雄性的胴体产量显着更高，为 78.1%，DFM 方案 A 为 74.6%；然而，女性在该方案中没有显着差异，但在方案 S 中差异显着，分别为 72.6% 和 69.0%。与 A 方案相比，接受 S 和 R 方案的肉鸡砂囊重量显着更高。 21 天时，DFM 处理的肉鸡方案 R 中空肠弯曲菌的患病率低于对照组（33% 与 60% 阳性）。整个研究中的每周体重反映了许多变化，但接受方案 A 对照饲料的肉鸡比接受 DFM 饲料的肉鸡表现更好。从目前的结果来看，补充 DFM 减少了空肠弯曲菌的存在，但对肉鸡的生长性能没有显着影响；然而，性别、饲料和喂养方法对性能结果的影响存在一些显着趋势。
An experiment was conducted to investigate the effect of restricted feeding of a commercially available probiotic diet on production/processing performance, Campylobacter jejuni prevalence, and organ weights in broiler chickens. Five hundred forty 1-d-old broiler chicks were randomly assigned to a control or a direct-fed microbial (PrimaLac, DFM) diet and subjected to ad libitum full-fed (A), restricted 8-h (R), or skip-a-day (S) feeding regimens. Each of the 6 treatments was replicated 3 times with 15 male and 15 female chicks per pen for 49 d. Significant (PR>S) at d 49, whereas weights of females did not differ in regimens A and S. Body weight in the control females of regimen R was significantly higher than those in regimens A and S. Carcass yield was significantly higher for males in the control regimen A, 78.1 vs. 74.6% for the DFM regimen A; however, females did not differ significantly in this regimen, but did so in regimen S with 72.6 vs. 69.0%. The gizzard weights were significantly higher for broilers exposed to S and R regimens when compared with the A regimen. The prevalence of C. jejuni in the DFM-treated broilers regimen R was lower (33 vs. 60% positive) for the control group at 21 d. The weekly BW throughout the study reflected many variations, but broiler chickens receiving the control feed on regimen A performed better than those receiving the DFM feed. From the present results, it was concluded that supplementation of DFM reduced the presence of C. jejuni but had no significant effect on the growth performance of broilers; however, there were some significant trends regarding sex, feed, and feeding methods on the performance results.