The Influence of Chicken Egg Lysozyme or Zinc-Bacitracin Antibiotic on the Growth Performance, Antibacterial Capacity, Blood Profiles, and Antioxidative Status of Rabbits: A Comparative Study

The Influence of Chicken Egg Lysozyme or Zinc-Bacitracin Antibiotic on the Growth Performance, Antibacterial Capacity, Blood Profiles, and Antioxidative Status of Rabbits: A Comparative Study

Dietary egg lysozyme has beneficial roles in the growth performance and health conditions of animals. The study was performed using 90 multicolored rabbits in three groups (each replicate with thirty rabbits). In the control group, rabbits were fed a diet without zinc bacitracin (ZnB) or egg lysozym...

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Bibliographic Details
Published in:Animals (Basel) Vol. 11; no. 6; p. 1731
Main Authors: EL-Deep, Mahmoud H., Amber, Khairy A., Eid, Yahia Z., Aboelenin, Salama Mostafa, Soliman, Mohamed Mohamed, Sakr, Mohamed S., Dawood, Mahmoud A. O.
Format: Journal Article
Language:English
Published: Basel MDPI AG 10-06-2021
MDPI
Subjects:
Additives
Antibiotics
Antiinfectives and antibacterials
Bacitracin
Bacteria
Bacterial diseases
Biochemistry
Blood
Body weight
Body weight gain
Comparative studies
Conversion ratio
Creatinine
E coli
Eggs
feed additives
Feed conversion
Feeds
Gene expression
Globulins
Glutathione peroxidase
Gram-positive bacteria
growth performance
Intestine
Lysozyme
Microbiota
Peroxidase
Proteins
Rabbits
Superoxide dismutase
Triglycerides
Urea
Zinc bacitracin
United States > US
Egypt
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Summary:Dietary egg lysozyme has beneficial roles in the growth performance and health conditions of animals. The study was performed using 90 multicolored rabbits in three groups (each replicate with thirty rabbits). In the control group, rabbits were fed a diet without zinc bacitracin (ZnB) or egg lysozyme, while the second and third groups were treated with ZnB and lysozyme additive at 100 mg/kg, respectively. After eight weeks, the final weight and body weight gain (BWG) of rabbits fed dietary egg lysozyme and ZnB additives were meaningfully increased (p < 0.05). Nevertheless, the feed conversion ratio (FCR) was markedly decreased by dietary egg lysozyme and ZnB (p < 0.05). Interestingly, dietary egg lysozyme resulted in higher final weight and BWG and lower FCR than rabbits treated with ZnB (p < 0.05). Rabbits treated with egg lysozyme and ZnB additives had markedly lower populations of Clostridium spp. and Escherichia coli (p < 0.05) compared with the control. However, the counts of Lactobacillus and total bacteria were meaningfully increased in the the intestines of rabbits treated with egg lysozyme and ZnB (p < 0.05). The blood total protein and globulin of rabbits fed dietary egg lysozyme and ZnB additives were meaningfully increased (p < 0.05). Blood creatinine was significantly lowered by dietary egg lysozyme compared with the control and ZnB-treated rabbits (p < 0.05). The levels of blood urea, ALT, and AST were markedly lowered (p < 0.05) by dietary egg lysozyme and ZnB. The gene expressions of superoxide dismutase 1 (SOD1) and glutathione peroxidase (GPX) in the liver of rabbits fed dietary egg lysozyme and ZnB additives were markedly upregulated (p < 0.05) compared with the control. Dietary egg lysozyme resulted in higher expression of SOD1 and GPX genes than rabbits treated with ZnB (p < 0.05). In conclusion, the inclusion of egg lysozyme could replace the inclusion of ZnB in the diets of rabbits.
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ISSN:2076-2615
2076-2615
DOI:10.3390/ani11061731