Nitrogen efficiency of dairy cattle : from protein evaluation to ammonia emission

Diet optimization contributes considerably to increased nitrogen efficiency of dairy cattle, resulting in reduced nitrogen losses. This thesis focuses on three themes: the potential advances in protein evaluation systems for ruminants, the relationship between dairy cow diet and ammonia emission and the opportunities to monitor ammonia emission from dairy cow barns by application of milk urea content as a practical indicator. Overall, the present work shows that farm management can be aimed at increased nitrogen efficiency of dairy cattle and reduced ammonia emission without compromising other sustainability objectives such as the integral ecological footprint, animal health and farm profitability. </p

Lois Whaley Highsmith

After originally studying chemical engineering at Penn State, Lois Highsmith decided to instead pursue nursing. At Jefferson she found a passion for community health nursing, specifically related to obstetrics, gynecology, and maternal child health. Ms. Highsmith graduated in 1986 and over the years worked mostly in maternal care but also in psychology. Among other positions, she worked for ten years at Pennsylvania Hospital where she founded STEPS, Strategies to Encourage Parental Self-Sufficiency, a teen pregnancy clinic, and worked as a home visitor for Mercy Home Health educating new moms about postpartum care. Since 2002 she has worked for Nurse Family Partnership, a home visiting program for first-time pregnant women that teaches women about child development, pregnancy, women’s health, and community resources.https://jdc.jefferson.edu/nursing_oral_histories/1014/thumbnail.jp

Jefferson Digital Commons quarterly report: October-December 2018

This quarterly report includes: Articles Dissertations From the Archives Grand Rounds and Lectures Industrial Design Capstones Journals and Newsletters LabArchives Launch Masters of Public Health Capstones Posters Reports Videos What People are Saying About the Jefferson Digital Common

Jefferson Digital Commons quarterly report: April-June 2019

This quarterly report includes: Articles CREATE Day Presentations Dissertations From the Archives Grand Rounds and Lectures House Staff Quality Improvement and Patient Safety Posters JCIPE Student Hotspotting Posters Journals and Newsletters MPH Capstone Presentations Posters Sigma Xi Research Day What People are Saying About the Jefferson Digital Common

Evaluation of an application for dynamic feeding of dairy cows

Dynamic feeding is an innovative application for concentrate feeding of dairy cows. Daily individual settings are derived from the actual individual milk yield response to concentrate intake. This response is estimated using an adaptive dynamic linear model. Optimal daily individual settings for concentrate supply are directed to achieve the maximum gross margin milk returns minus concentrate costs. This response curve plays a key role in the application. The response curve is derived from a mechanistic model for milk production and can also be established empirically from daily milk yield development during early lactation when concentrate supply increase is linear. A test application for dynamic feeding ran for several months in 2008 and results from 145 cows at one farm on 17 December 2008 have been used to demonstrate the variation in individual response. The gross margin, milk returns minus concentrate costs, varied from 2.52 to 26.32 €/day. The estimated response parameters provide insight in variation between individuals concerning the effects of concentrate and base ration intake on daily milk yield. Economical and nutritional aspects can be evaluated for each individual. Individual dynamic feeding towards an economic optimum indicates that excessive changes in individual bodyweighti can be prevented

Anna Marie D\u27Amico

Dr. D’Amico entered Jefferson Medical College in 1968 after spending three years as a biology major at Catholic University of America in Washington D.C. After graduating from Jefferson in 1972 she did her internship and residency at Wilmington General Hospital before going into practice on her own in 1976. Dr. D’Amico retired from practice in 2007. Since then she has volunteered at the Claymont Family Health Clinic, a clinic for the uninsured, and from 2009-2011 she was the Medical Director of Planned Parenthood of Delaware. Most recently she is the Medical Director of a new medical spa. Dr. D’Amico has been professionally involved in ACOG, the American Congress of Obstetricians and Gynecologists, for more than twenty years and has held a variety of leadership positions in the organization, most notably as the first woman District III Chair from 2004-2007.https://jdc.jefferson.edu/oral_histories/1007/thumbnail.jp

Jefferson Digital Commons quarterly report: July-September 2018

This quarterly report includes: New Collection Alert Articles Code Red: Battling the Plague of Gun Violence Dissertations From the Archives Grand Rounds and Lectures House Staff Quality Improvement and Patient Safety Posters Journals and Newsletters Nexus Maximus Posters Third Annual Sepsis Symposium What People are Sayin

Women at Jeff: New Oral Histories Posted to the JDC

The Archives and Special Collections is posting oral history interviews with some of the first women to attend Jefferson. The interviews explore how each woman became interested in the sciences or medicine, their time at Jefferson Medical College, and where their careers took them after graduate school

Jefferson Digital Commons quarterly report: October-December 2017

This quarterly report includes: Assorted assets added to the JDC in the last quarter Grand Rounds Recordings College Within a College (CWIC) Posters Program of Industrial Design Capstones What people are saying about the JD