酿酒酵母发酵产物对球虫攻毒产蛋鸡肠道健康和生产性能的影响。

Efficacy of Saccharomyces cerevisiae fermentation product on intestinal health and productivity of coccidian-challenged laying hens.

机构信息

Schothorst Feed Research B.V., Lelystad, the Netherlands.

出版信息

Poult Sci. 2012 Jul;91(7):1590-7. doi: 10.3382/ps.2011-01508.

DOI:10.3382/ps.2011-01508

Abstract

A 37-d laying hen experiment was performed to determine the effect of Diamond V XPC(LS) (XPC(LS), Diamond V Mills, Cedar Rapids, IA) during a subclinical Eimeria maxima infection on intestinal health and productivity. Two hundred and sixteen 18-wk-old Brown Nick laying hens were allocated to 24 litter pens based on a weight class system (9 hens/pen). The trial was carried out as a 2 × 2 factorial design with XPC(LS) and E. maxima challenge as main factors. Birds were fed a corn/wheat-based mash prelayer diet from wk 18 to 20 (10.9 MJ/kg of AME and 13.7% CP) and a standard phase I layer diet from wk 20 to 24 (11.7 MJ/kg of AME and 15.3% CP) that were supplemented with XPC(LS) at the rate of 0 or 0.75 g/kg. Hens were orally inoculated on d 23 (22 wk of age) with either 1 mL of saline (not infected) or 10,000 sporulated E. maxima oocysts/bird in 1 mL of saline (infected). Effects of XPC(LS) on intestinal health were determined by E. maxima lesion scoring. Results of E. maxima lesions were analyzed by Fisher exact, whereas severity of lesions and production parameters were analyzed by ANOVA. Supplementation of XPC(LS) significantly reduced severity of E. maxima lesions (P < 0.05) from 1.1 to 0.8 in challenged hens. An overall significant effect of XPC(LS) supplementation was demonstrated on d 34 by decreasing the severity of lesions from 0.3 to 0.1. The E. maxima challenge decreased (P < 0.05) production performance between 7 and 14 d postchallenge by lowering egg weight from 50 to 47 g/egg and laying rate from 84 to 70% and increasing feed per dozen eggs (P < 0.01) from 1.60 to 2.06 kg. Results indicate that Diamond V XPC(LS) supplementation reduced intestinal damage caused by an E. maxima infection in laying hens.

摘要

进行了一项为期 37 天的产蛋母鸡试验，以确定在亚临床的堆型艾美耳球虫感染期间，使用 Diamond V XPC（LS）（XPC（LS），Diamond V 米尔斯，爱荷华州锡达拉皮兹）对肠道健康和生产性能的影响。将 216 只 18 周龄的棕色尼克产蛋母鸡按照体重等级系统（每笼 9 只鸡）分配到 24 个垫料笼中。试验采用 2×2 析因设计，以 XPC（LS）和堆型艾美耳球虫攻毒为主要因素。从第 18 周到第 20 周（AME 为 10.9 MJ/kg，CP 为 13.7%），鸡群饲喂玉米/小麦基础预混料，从第 20 周到第 24 周（AME 为 11.7 MJ/kg，CP 为 15.3%），用 0 或 0.75 g/kg 的 XPC（LS）补充标准的第 I 阶段产蛋鸡日粮。在第 23 天（22 周龄），鸡通过口咽接种 1 毫升盐水（未感染）或 10000 个孢子化的堆型艾美耳球虫卵囊/只鸡的 1 毫升盐水（感染）。通过堆型艾美耳球虫病变评分确定 XPC（LS）对肠道健康的影响。用 Fisher 确切检验分析堆型艾美耳球虫病变的结果，用方差分析分析病变严重程度和生产参数。XPC（LS）的补充显著降低了感染鸡的堆型艾美耳球虫病变的严重程度（P < 0.05），从 1.1 降到 0.8。XPC（LS）补充的总体显著效果表现在第 34 天，病变严重程度从 0.3 降到 0.1。堆型艾美耳球虫攻毒在攻毒后 7 至 14 天降低了产蛋性能（P < 0.05），通过将蛋重从 50 克降到 47 克/枚和产蛋率从 84%降到 70%，并增加了每打鸡蛋的饲料用量（P < 0.01），从 1.60 千克增加到 2.06 千克。结果表明，Diamond V XPC（LS）的补充减少了产蛋母鸡堆型艾美耳球虫感染引起的肠道损伤。