Commerical probiotic supplementation for suckling friesian calves 2- immune response and mortality rate
Abstract: The Forty-eight newly born Friesian male and female calves, 30 during winter and 18 in summer seasons were divided into three comparable groups based on sex and birth weight. The control group (G1) was fed a basal diet consisted of whole milk, starter and fresh berseem (winter season) or berseem hay (summer season). The second (G2) and third (G3) groups were fed the basal diet supplemented with 5 and 10 g Bio-Top / calf / day in the milk once a day during the morning suckling, respectively.
Concentration of hemoglobin and hematocrit value of calves G2 and G3 were significantly higher than G1. Both estimates increased significantly with advancing age and in winter than summer. Neither the pro biotic supplementation nor the progress of age significantly affected the activities of AST and ALT enzymes in blood serum, they were significantly higher in summer than winter season. There were no significant differences in hemoglobin concentration, hematocrit value or activities of AST and AL T between male and female calves.
Red and white blood cell counts of calves in G2 and G3 were significantly greater than G1. They also increased significantly with advancing age and in winter than summer. There were no significant differences in this respect between male and female calves. The percentages of lymphocyte and monocyte of treated calves were significantly higher, while neutrophil, basophil and eosenophil percentages were significantly lower than the control calves. Percentages of lymphocyte, monocyte and basophil were significantly higher, while neutrophil and eosenophil percentages were significantly lower for winter compared with summer season. No significant differences in differential white blood cell count were detected between male and female calves.
Concentrations of IgG, IgM and IgA were significantly higher in blood serum of treated Friesian calves (G2 and G3) than the control group, post-colostral than precolostral for the all groups and in winter than in summer. No significant differences in immunoglobulins fractions between male and female calves.
The percentages of calves infected with diarrhea, respiratory, septicemia, navel and general weakness diseases were significantly lower in G2 and G3 than in the control group. Infection with such diseases was higher during the first 5 weeks of age and decreased markedly with age progress. In winter, diarrhea, respiratory and septicemia were significantly more detected, while navel and general weakness were significantly less detected compared with summer. The respective diseases except the navel disease were significantly lower for male compared with female calves.
Probiotic supplementation reduced mortality rate significantly in suckling calves, which was significantly higher in winter than summer season and for male than female calves.
Keywords: Suckling Friesian calves, probiotic, blood hematology, enzymes, immune response, mortality rate.
Publication year 2005
Pages 4451-4460
Availability location معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
City المنصورة
serial title Journal Agricultural Science Mansoura University
ISSN 1110-0346
Author(s) from ARC
Agris Categories Animal physiology - Nutrition
AGROVOC
TERMS		 Calves. Enzymes. Immune response. Mortality. Probiotics. Suckling.
Proposed Agrovoc blood hematology;
Publication Type Journal
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