Modification of microbiological quality and valorization of different ruminants species ruminal content in farm animals feeding

Yamouna Bara, R. Arbouche, Abdelhamid Baa, A. Mammeri
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Abstract

This study is based on the microbiological analysis of a common slaughterhouse by-product which is the rumen content, before and after treatment with HCl 1N, targeting its valorization in domestic animal feeding. A total of 24 rumen content samples were collected in pairs (two series) immediately after slaughter from 12 ruminants (cattle, sheep and goats). The first series was not treated with HCl (N0 = 12), while the second series was treated with HCl 1N (N1 = 12) to adjust its pH to about 2. Then all samples (series 1 and 2) were subject to a group of microbiological analyzes targeting identification and enumeration of total aerobic mesophilic flora; fecal and total coliforms; Clostridium perfringens; Staphylococcus aureus; Salmonella spp. as well as yeasts and molds. The results revealed that after lowering the pH to about 2, the 2nd series samples were considered of satisfactory quality, with reference to Algerian microbiological standards for livestock feeds. The reduction rates of germs in the 2nd series compared to the 1st series were as follows: total aerobic mesophilic flora (86.45%), total coliforms (96.43%), faecal coliforms (70.41). %), Clostridium perfringens (88.4%), yeast and mold (87.75%). The total absence of Staphylococcus aureus and Salmonella spp. was registered.
农用动物饲养中不同反刍动物瘤胃含量的微生物品质变化及价值评价
本研究基于一种常见的屠宰场副产品——HCl 1N处理前后的瘤胃内容物的微生物学分析,目的是使其在家畜饲养中的价值增值。选取12头反刍动物(牛、绵羊和山羊)屠宰后,分两组采集24份瘤胃内容物样本。第一个系列不使用HCl (N0 = 12)处理,第二个系列使用HCl 1N (N1 = 12)处理,将其pH调节到2左右。然后对所有样品(系列1和系列2)进行微生物学分析,目的是鉴定和枚举总需氧中温菌群;粪便和总大肠菌群;perfringens梭状芽胞杆菌;金黄色葡萄球菌;沙门氏菌,还有酵母和霉菌。结果表明,在pH值降至2左右后,第2系列样品的质量符合阿尔及利亚家畜饲料微生物标准。与第1个系列相比,第2个系列的细菌减少率为:好氧中温菌群总数(86.45%),大肠菌群总数(96.43%),粪便大肠菌群(70.41%)。%),产气荚膜梭菌(88.4%),酵母和霉菌(87.75%)。金黄色葡萄球菌和沙门氏菌均未检出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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