| Feeding heat-treated colostrum to neonatal dairy heifers: effects on growth characteristics and blood parameters. | |
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MedLine Citation:
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PMID: 19528603 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Newborn Holstein heifer calves were studied to compare absorption of immunoglobulin G (IgG(1) and IgG(2)), total serum protein concentration, lymphocyte counts, health scores, growth, and starter intake after receiving unheated or heat-treated colostrum. First-milking colostrum was collected from Holstein cows and frozen at -20 degrees C to accumulate a large batch. After thawing and mixing, half of the colostrum was transferred into 1.89-L plastic containers and frozen at -20 degrees C until needed for feeding. The remaining half was heated at 60 degrees C for 30 min, transferred into 1.89-L plastic containers, and then frozen at -20 degrees C until needed for feeding. Forty heifer calves weighing > or =32 kg at birth were enrolled into 1 of 2 treatment groups before suckling occurred. For the first feeding, 3.8 L of colostrum was bottle fed by 1.5 to 2 h of age. For the second and third feedings, pasteurized whole milk at 5% of birth body weight (BW) was fed. Subsequently, calves received milk replacer containing 20% crude protein and 20% fat at 10% of birth BW/d until wk 5. Milk replacer was reduced to 1 feeding of 5% birth BW until weaning at 6 wk of age. Blood samples and growth data were collected through wk 8. Batch heat-treatment of colostrum at 60 degrees C for 30 min lowered colostrum bacteria concentration while maintaining colostral IgG concentration and viscosity. Calves fed heat-treated colostrum had significantly greater IgG concentrations at 24 h and greater apparent efficiency of IgG absorption (IgG = 23.4 g/L; apparent efficiency of absorption = 33.2%) compared with calves fed unheated colostrum (IgG = 19.6 g/L; apparent efficiency of absorption = 27.7%). There was no difference between treatment groups in growth measurements, calf starter intake, lymphocyte counts, or health scores. |
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Authors:
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J A Elizondo-Salazar; A J Heinrichs |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of dairy science Volume: 92 ISSN: 1525-3198 ISO Abbreviation: J. Dairy Sci. Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-06-16 Completed Date: 2009-09-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985126R Medline TA: J Dairy Sci Country: United States |
Other Details:
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Languages: eng Pagination: 3265-73 Citation Subset: IM |
Affiliation:
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Department of Dairy and Animal Science, The Pennsylvania State University, University Park 16802, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Animals, Newborn Body Weight / physiology Cattle / blood*, growth & development*, immunology Colony Count, Microbial Colostrum / chemistry, microbiology, physiology* Dairying / methods* Eating / physiology Feeding Methods / veterinary* Female Hot Temperature* Immunoglobulin G / analysis, blood Lymphocyte Count Regression Analysis Viscosity |
| Chemical | |
Reg. No./Substance:
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0/Immunoglobulin G |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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