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Robert James

Title Summary Date ID Author(s)
"Waste" Milk For Calves Jun 30, 2014
Calf Nutrient Requirements During Cold Weather Jan 7, 2014
Dairy Heifer Health, Disease Control, and Vaccinations

The future of the dairy herd is dependent on the production of superior heifers to replace culled lactating animals. Therefore, it is imperative that the health status of the replacement animal is optimized to present a healthy first calf heifer to the lactating herd. Studies have consistently demonstrated the detrimental effects of pneumonia in calves on age at first calving and on milk production once these animals enter lactation. Calves with respiratory infections were twice as likely to leave the herd and age at first calving was delayed by 6 months when compared with calves that did not experience respiratory disease or pneumonia. In another study, calves treated for scours were three times more likely to calve at 30 months of age or greater.

May 1, 2009 404-284
Dairy Pipeline, April 2014 Mar 26, 2014 DASC-36NP
Dairy Pipeline, January/February 2014 Jan 7, 2014 DASC-31NP
Dairy Pipeline, January/February 2015 Jan 7, 2015 DASC-45NP
Dairy Pipeline, July/August 2013 Jul 1, 2013 DASC-24NP
Dairy Pipeline, July/August 2014 Jun 30, 2014 DASC-40NP
Dairy Pipeline, June 2014 May 23, 2014 DASC-38NP
Dairy Pipeline, March 2014 Feb 27, 2014 DASC-35NP
Dairy Pipeline, March 2015 Mar 2, 2015 DASC-47NP
Dairy Pipeline, May 2014 Apr 24, 2014 DASC-37NP
Dairy Pipeline, November/December 2013 Oct 24, 2013 DASC-29NP
Dairy Pipeline, November/December 2014 Nov 4, 2014 DASC-43NP
Dairy Pipeline, October 2013 Sep 25, 2013 DASC-28NP
Dairy Pipeline, October 2014 Sep 30, 2014 DASC-42NP
Dairy Pipeline, September 2013 Sep 5, 2013 DASC-26NP
Dairy Pipeline, September 2014 Aug 25, 2014 DASC-41NP
Dairy Pipeline: Activities Mar 2, 2015
Dairy Pipeline: Activities Jan 7, 2015
Dairy Pipeline: Activities Nov 4, 2014
Dairy Pipeline: Activities Sep 30, 2014
Dairy Pipeline: Activities Aug 25, 2014
Dairy Pipeline: Activities Jun 30, 2014
Dairy Pipeline: Activities May 23, 2014
Dairy Pipeline: Activities Apr 24, 2014
Dairy Pipeline: Activities Mar 26, 2014
Dairy Pipeline: Activities Feb 27, 2014
Dairy Pipeline: Activities Jan 7, 2014
Dairy Pipeline: Activities Oct 24, 2013
Dairy Pipeline: Activities Sep 25, 2013
Dairy Pipeline: Activities Sep 5, 2013
Dairy Pipeline: Activities Jul 1, 2013
Early Heifer Development and Colostrum Management

Raising dairy replacement heifers is expensive. In fact, if the dairy is divided into different enterprises (eg. labor, feed cost for lactating cows, facilities, etc.), rearing replacements is the second largest cost, behind feed cost for lactating cows. The percentage will vary from farm to farm, but approximately 9% to 20% of the expenses incurred will involve rearing and developing heifers. Therefore, heifers should represent a sound investment, as their impact on future herd profitability is enormous.

May 1, 2009 404-282
Feeding Protein to Meet Dairy Cow Nutrient Requirements Can Result in Cheaper, Environmentally Friendly Rations

Animal agriculture is facing the significant issue of managing excreted nutrients, and researchers are designing programs to address the issue. The intense management of animals in the poultry, swine, and dairy industries can contribute to environmental pollution. Although there are more beef than dairy cattle in Virginia, beef cattle are typically maintained on pasture and dispersed over a greater area. Feed management in dairy cows to reduce nutrient consumption has been identified as being very effective in reducing output of potentially polluting nutrients such as nitrogen and phosphorus.

May 1, 2009 404-354
Five Simple Tips To Reduce The Negative Impacts Of Hot Weather On Diary Cattle Jul 1, 2013
Group Housing For Calves: Is This The Right System For You? Nov 4, 2014
It Has Got To Be Clean! Mar 26, 2014
Nutrition For The Early Developing Heifer

Several factors can dramatically reduce replacement-rearing cost and increase potential profits for the producer: (1) maximizing immunity from colostrum to minimize mortality and sickness, (2) formulating rations for specific weight gains during strategic periods of development and avoiding over-fattening prior to puberty because it impairs mammary development, (3) formulating rations for an average daily gain of 1.8 lb. for Holstein heifers, (4) using AI sires ranking in the top 20% for (PTA$) to optimize genetic improvement, (5) monitoring age, body weight, wither height, body condition score as well as peak milk and ME milk yield of first lactation heifers to evaluate management at first calving, and (5) controlling the size of the replacement herd by calving heifers at 24 months and raising no more than needed.

May 1, 2009 404-283
Protect Your Calves' Health With Biosecurity Protocols Mar 2, 2015
VCE and the Dairy Science Department Welcome Jeremy Daubert and His Family to Virginia Jan 7, 2014
Virginia State Feed Association & The Virginia Tech Nutrition "Cow College" Oct 24, 2013