Growth performance, blood components and slaughter traits of New Zealand white male growing rabbits as affected by dietary supplementation with calcium, sodium or potassium, in sub-tropical Egypt



Título del documento: Growth performance, blood components and slaughter traits of New Zealand white male growing rabbits as affected by dietary supplementation with calcium, sodium or potassium, in sub-tropical Egypt
Revista: Tropical and subtropical agroecosystems
Base de datos: PERIÓDICA
Número de sistema: 000269031
ISSN: 1870-0462
Autores: 1

Instituciones: 1Zagazig University, Department of Animal Production, Zagazig, Sharqiya. Egipto
Año:
Periodo: Ago
Volumen: 6
Número: 2
Paginación: 149-155
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en español El trabajo tuvo el objetivo de estudiar el efecto de la suplementación con Ca, Na o K durante tres meses del verano e invierno sobre el crecimiento, componentes sanguíneos características de la canal de conejos (New Wealand White, NZW). El peso, la ganancia de peso, proteína seríca, albúmina, globulina (componentes sanguíneos), N-ureico, creatinina (función renal), AST y ALT (función hepática), peso de la canal, porción anterior, posterior y cabeza fueron menores en verano (P<0.001, 0.01 or 0.05). La suplementación mineral sólo afecto peso final, ganancia diaria de peso proteína sérica total y el peso ajustado de la canal y cabeza. La suplementación (per kg dieta) con 100 mg óxido de calcio, 150 mg cloruro de sodio o 300 mg bicarbonato de potasio excedió (P<0.05) la dieta control en 21.3, 9.0 y 7.2%, respectivamente. El mayor incremento se obtuvo con bicarbonato de potasio en invierno. En verano el mayor incremento se obtuvo cloruro de sodio. Las necesidades de minerales de NZW en ambientes tropicales deben ser revisadas
Resumen en inglés The study aimed to investigate growth performance, blood components and slaughter traits of NZW male growing (broiler) rabbits (78 animals) as affected by dietary supplementation with calcium, sodium or potassium during 3 months in each of summer and winter, in Egypt. Effects of seasons of the year on the same traits, were also studied. Live body weight, daily body gain weight, serum total protein, albumin, globulin (blood components), urea-N, creatinine (kidney function), AST (Serum glutamic oxaloacetic transaminase) and ALT (Serum glutamic pyruvic transaminase) (liver function), pre-slaughter weight and adjusted weights of carcass, fore-part, hind-part and head of New Zealand White (NZW ) male rabbits were significantly (P<0.001, 0.01 or 0.05) lower in summer than in winter due to the effect of heat stress. Minerals supplementation affected significantly (P<0.001, 0.01 or 0.05) male rabbit in final live body weight, daily gain weight, serum total protein and albumin and adjusted weights of carcass and head. Supplementation (per kg diet) with each of 100 mg calcium oxide, 150 mg sodium chloride or 300 mg potassium bicarbonate exceeded significantly (P<0.05) the control diet, at the end of the experimental period. The increase values were 21.3, 9.0 and 7.2%, respectively. Interaction between season and minerals supplementation effects were significant ((P>0.001, 0.01 or 0.05) on final live body weight, daily body gain weight, serum total protein and albumin, pre-slaughter weight and adjusted weights of liver, carcass intermediate and hind parts and head of NZW male rabbit. The magnitude of improvement was the highest with potassium bicarbonate (300 mg/kg diet) followed by calcium oxide (100 mg/kg diet), in winter. In summer, the highest improvement obtained was with sodium chloride (150 mg/kg diet) supplementation. At the same time, the interaction effects of the other mineral supplements on the studied traits were negative in the two seasons
Disciplinas: Medicina veterinaria y zootecnia
Palabras clave: Otras especies de interés zootécnico,
Zootecnia,
Conejos,
Trópico,
Suplementación,
Minerales,
Ganancia de peso
Keyword: Veterinary medicine and animal husbandry,
Animal husbandry,
Species of commercial interest,
Rabbits,
Tropics,
Supplementation,
Minerals,
Weight gain
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