Sixty Holstein calves (30 bulls, 30 heifers) were used to examine the effects of supplemental lactoferrin on feed intake, growth, and health during the preweaning and postweaning periods. One of three levels of lactoferrin was added to whole milk in order to produce three dietary treatments: 1.) 0 g/d, 2.) 0.5 g/d, 3.) 1 g/d. Milk (3.8 L/d) was fed from bottles until weaning at 35 days. From days 36 to 56, lactoferrin supplements were added to water (15-25 mL) and fed from bottles. Lactoferrin supplementation did not have any significant effect on feed intake, body weight, average daily gain, heart girth, body temperature, fecal scores, respiratory scores, or haptoglobin concentrations. Calves were housed in individual pens in either an open-sided barn or hutches. Calves raised in the barn consumed more calf starter and therefore grew better than calves raised in hutches. In this study, lactoferrin supplementation was not beneficial. Further research is needed to fully elucidate lactoferrin?s effects in whole milk as well as its role when fed postweaning.
| Identifer | oai:union.ndltd.org:NCSU/oai:NCSU:etd-08142006-135036 |
| Date | 08 December 2006 |
| Creators | English, Elizabeth Anne |
| Contributors | Geof Smith, Lon Whitlow, Brinton Hopkins |
| Publisher | NCSU |
| Source Sets | North Carolina State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://www.lib.ncsu.edu/theses/available/etd-08142006-135036/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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