Productive performance response of growing rabbits to dietary protein reduction and supplementation of pyridoxine, protease, and zinc
Document title: Productive performance response of growing rabbits to dietary protein reduction and supplementation of pyridoxine, protease, and zinc
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000435925
ISSN: 0001-3765
Authors: 1
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1
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Institutions: 1Zagazig University, Faculty of Agriculture, Zagazig, Sharqiya. Egipto
Year:
Volumen: 92
Number: 3
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Aplicado, descriptivo
English abstract An 8-week experiment was carried out to assess the impact of supplemental dietary pyridoxine (PY), protease (PR), zinc (Zn) and their mixture (MIX) with low protein diet (LP; 14.76% CP) or high protein diet (HP; 18.53% CP) on rabbit growth, feed utilization, and nutrients digestibility. Rabbits were divided into ten similar groups in a 2 (protein level) ×5 (treatments) factorial design. Treatments included a control group (without any additives), 5 mg PY/kg of diet, 100 mg Zn/kg of diet, 500 mg PR/kg of diet or a mixture of all tested feed additive with the same doses. Results indicated that growth performance, feed utilization, and nutrients digestibility indicators were retarded significantly with reduction of dietary crude protein. Growth performance and feed conversion were significantly enhanced as a result of PY, PR, Zn, and MIX supplementation. All feed supplements had significantly improved the digestibility of crude protein and digestible crude protein. No change in carcass traits was recorded in response to protein level and tested feed supplements. It is concluded that the growing rabbit responded positively to PY, Zn, PR, and MIX (particularly PY) supplemental of LP or HP diets, in terms of growth performance, feed conversion, and nutrient digestibility
Disciplines: Medicina veterinaria y zootecnia
Keyword: Pequeñas especies,
Nutrición animal,
Conejos,
Restricción proteica,
Suplementación alimenticia,
Piridoxina,
Proteasas,
Zinc,
Digestibilidad,
Crecimiento
Keyword: Companion animals,
Animal nutrition,
Rabbits,
Protein restriction,
Food supplementation,
Growth,
Proteases,
Pyridoxine,
Digestibility,
Zinc
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