Yeast cell-wall products containing beta-glucan plus ascorbic acid affect neonatal Bos taurus calf leukocytes and growth after a transport stressor

Journal of Animal Science
S D EicherT R Johnson

Abstract

The objectives were to ascertain whether a yeast cell-wall derivative that was 1.8% beta-glucan in combination with ascorbyl-2-polyphosphate could improve innate immunity and mediate transportation stress in neonatal calves, and to compare the 1.8% beta-glucan yeast cell-wall derivative with a more purified yeast cell-wall derivative (70% beta-glucan). Treatments were 1) an unsupplemented control (CNT); 2) 113 g of a 1.8% (approximately 2%) beta-glucan derivative of yeast cell walls plus 250 mg of l-ascorbic acid phosphate (BG2); or 3) 150 mg of a purified beta-glucan fraction from yeast cell walls (approximately 70% beta-glucan) plus 250 mg/feeding of l-ascorbic acid phosphate (BG70). Calves (n = 39) were transported for 4 h, placed in outdoor hutches, and randomly assigned to treatments. Treatments (mixed with a milk replacer) were individually fed twice daily for 28 d. Calves were offered calf starter, free choice, throughout the study. Weekly starter intake and BW were measured, and fecal samples were collected for Salmonella Typhimurium and Escherichia coli O157:H7 PCR analysis. Blood was collected immediately before transport (d 0) and on d 3, 7, 10, 14, 21, and 28 after transport. Starter intake and DMI were less (P < 0....Continue Reading

References

Jun 1, 1992·Journal of Dairy Science·S D Eicher-PruiettP G Reddy
Oct 14, 1995·The Veterinary Record·T G Knowles
Jun 17, 1999·Molecular and Cellular Probes·S A CarlsonB D Jones
Apr 11, 2000·Research in Veterinary Science·S E ToddR N Ward
Sep 6, 2000·Proceedings of the National Academy of Sciences of the United States of America·I M Pruimboom-BreesH W Moon
Feb 15, 2002·American Journal of Veterinary Research·Jerry K McvickerThomas E Johnson
Mar 31, 2005·Veterinary Immunology and Immunopathology·Hiroshi IshizakiYoshihiro Kariya

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