甲基苯丙胺饲喂方式对肉鸡生长性能、肠道微生物群、器官组织学和血液生化特征的影响

Kengni Noubissie Josiane, Kana Jean Raphaël, Ngouana Tadjong Ruben, Yemdjie Mane Doriane Divine, Ebile Dayan Agwa, Tchouan Deffo Gilchrist, Necdem Tsafack Boris Valdes, Issa Bachar Issa
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引用次数: 1

摘要

家畜的微生物耐药性已成为公众和科学界高度关注的课题。本研究旨在评估高铁胺饲养制度对肉鸡生长性能的影响。为此,使用了120只Cobb 500品系的雏鸡,包括60只21日龄的雄性和60只雌性,平均体重分别为639g和584g。它们被随机分配到60个实验单位,每个笼子2只同性小鸡,直到49天。将甲烯胺掺入饲料(TA)、酸化水(TEa)和非酸化水(TE)中,并与抗生素药物饮食作为阳性对照(T0+)和不含任何补充剂的日粮作为阴性对照(T0)进行比较。主要结果表明,无论饲养方式如何,甲脒都能显著(p 0.05)提高饲料的采食量、体重、增重,降低饲料转化率(p 05)。与大肠菌群和球虫数量相比,无论喂食方式如何,甲胺都会导致乳酸菌数量显著增加。整个试验期间均未发现沙门氏菌。无论性别和饲养制度如何,血液学参数都没有受到显著影响,但雄性肉鸡的白细胞和血小板浓度显著下降(p0.05)。血清ASAT(天冬氨酸转移酶)、丙氨酸转移酶、肌酸酐、尿素和低密度脂蛋白胆固醇含量显著下降(p0.05),而高密度脂蛋白含量升高。器官的组织学没有受到影响。通过饮用水给肉鸡喂食甲氨蝶呤可以作为抗生素的替代品来提高肉鸡的生长性能。
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Effects of Methenamine Feeding Regime on Growth Performances, Gut Microbiota, Organs Histology and Haemato-Biochemical Profile of Broiler Chickens
Microbial resistance in livestock has become a subject of great concern of public and scientific interest. This study was designed to assess the effects of methenamine feeding regime on growth performances of broilers chickens. For this purpose, 120 chicks of Cobb 500 strain, including 60 males and 60 females of 21 days old with an average weight of 639 g and 584 g respectively were used. They were randomly distributed in 60 experimental units of 2 chicks of same sex per cage until 49 days. Methenamine was incorporated in feed (TA), acidified (TEa) and non acidified (TE) water and compared to an antibiotic medicated diet as positive control (T0+) and a ration without any supplement as negative control (T0). The main results showed that, regardless of the feeding regime, methenamine significantly (p 0.05) increased feed inteake, body weight, weight gain and decreased (p 0.05) feed conversion ratio. Methenamine whatever the feeding regime induced a significant increase in lactic acid bacteria counts compared to coliforms and coccidies counts. Salmonella were absent throughout the trial period. Regardless of sex and feeding regime, hematological parameters were not significantly affected, with the exception of white blood cell and platelet concentration that decreased significantly (p 0.05) in male broilers. Serum content in ASAT (Aspartate-transferase), ALAT (Alanine-transferase), creatinine, urea and LDL-cholesterol decreased significantly (p 0.05), while HDL-cholesterol increased. Histology of organs was not affected. Feeding methenamine to broiler chickens through drinking water can be used as an alternative to antibiotic to improve growth performances.
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