Fall 2013 Materials and Schedule

Unless indicated otherwise, our class meets from 12:05-12:55 pm. in room 236 An. Sci. Bldg. Below is the course schedule for Fall 2013. From this page you can download readings and access to the blog pages. 
Day Date Topic
Monday 12/02 Flow Measurements and Intestinal Digestibility Techniques
Wednesday 12/04 Regulation of Milk Protein Synthesis
Thursday 12/05 Urea Recycling
Friday 12/06 BUN, MUN Urine Urea-N Excretion
Monday 12/09 Protein x Energy Inefficiencies
Wednesday 12/11 No Class
Thursday 12/12 Synthesis and Integration a) Nitrogen Section | b) Course Content Part I
Friday 12/13 Synthesis and Integration Course Content Part II

Flow Measurements and Intestinal Digestibility Techniques

  • Monday 12/02
    • Reading: Calsamiglia, S. and M.D. Stern. 1995. A Three-Step in vitro Procedure for Estimating Intestinal Digestion of Protein in Ruminants. J. Anim. Sci. 73:1459-1465 | Facilitators: Spencer and Margaret
    • Blog entry (inactive).

    • Reading: Ahvenjärvi et al., 2000. Determination of reticulo-rumen and whole-stomach digestion in lactating cows by omasal canal or duodenal sampling. | Facilitators: Dave and Tiago
    • Blog entry (inactive).

Regulation of Milk Protein Synthesis

  • Wednesday 12/04
    • Reading: Rius et al., 2010. Regulation of protein synthesis in mammary glands of lactating dairy cows by starch and amino acids. | Facilitators: Mason and Michel
    • Blog entry (inactive).

    • Reading: Doepler et al., 2004. Milk protein synthesis as a function of amino acid supply.  | FacilitatorsDavid and Heather
    • Blog entry (inactive).

    • Read Abstract:
      • Doepel and LaPierre, 2010 Changes in production and mammary metabolism of dairy cows in response to essential and nonessential amino acid infusion.
      • Mackle et al. 2004. Effects of insulin and postruminal supply of protein on use of amino acids by the mammary gland for milk protein synthesis.

Urea Recycling

  • Thursday 12/05 — 3:30-5:30 pm 
    • Reading: Martineau et al., 2011. Relation of net portal flux of nitrogen compounds with dietary characteristics in ruminants: A meta-analysis approach. | FacilitatorsClayton and David
    • Blog entry (inactive).

    • Reading: Lapierre et al., 2005. The route of absorbed nitrogen into milk protein. | FacilitatorsSpencer and Tiago
    • Blog entry (inactive).

    • Read Abstract:
      • Røjen and Kristensen 2012. Effect of time duration of ruminal urea infusions on ruminal ammonia concentrations and portal-drained visceral extraction of arterial urea-N in lactating Holstein cows.
      • Røjen et al., 2011. Effects of nitrogen supply on inter-organ fluxes of urea-N and renal urea-N kinetics in lactating Holstein cows.
      • Kristensen et al., 2010. Effect of dietary nitrogen content and intravenous urea infusion on ruminal and portal-drained visceral extraction of arterial urea in lactating Holstein cows.

BUN, MUN Urine Urea-N Excretion

  • Friday 12/06 
    • Reading: Spek et al., 2013. Prediction of urinary nitrogen and urinary urea nitrogen excretion by lactating dairy cattle in northwestern Europe and North America: A meta-analysis. | FacilitatorsTawny and Christine
    • Blog entry (inactive).

    • Reading: Higgs et al., 2012. Development and evaluation of equations in the Cornell Net Carbohydrate and Protein System to predict nitrogen excretion in lactating dairy cows. | FacilitatorsChristine and Margaret
    • Blog entry (inactive).

    • Read Abstract:
      • Burgos et al., 2007. Prediction of ammonia emission from dairy cattle manure based on milk urea nitrogen: Relation of milk urea nitrogen to urine urea nitrogen excretion.
      • Kohn et al., 2005. Using blood urea nitrogen to predict nitrogen excretion and efficiency of nitrogen utilization in cattle, sheep, goats, horses, pigs, and rats.
      • Powell et al., 2011. Short communication: Evaluation of milk urea nitrogen as a management tool to reduce ammonia emissions from dairy farms.

Protein x Energy Inefficiencies

  • Monday 12/09 
    • Reading: Dijkstra et al., 2011. Dietary strategies to reducing N excretion from cattle: Implications for methane emissions. | FacilitatorsMason and Tawny
    • Blog entry (inactive).

    • Reading: Klevenhusen et al., 2011. Enteric and manure-derived methane and nitrogen emissions as well as metabolic energy losses in cows fed balanced diets based on maize, barley or grass hay. | FacilitatorsSpencer and Clayton
    • Blog entry (inactive).

    • Read Abstract:
      • Lee et al., 2012. Effects of metabolizable protein supply and amino acid supplementation on nitrogen utilization, milk production, and ammonia emissions from manure in dairy cows.

Synthesis and Integration a) Nitrogen Section | b) Course Content Part I

  • Thursday 12/12 — 3:30-5:30 pm
    • Reading: Casamiglia et al., 2010. Strategies for optimizing nitrogen use by ruminants. FacilitatorsMargaret and Tiago
    • Blog entry (inactive).

    • Homework: Please review the course content from the beginning of the semester and post a blog entry highlighting a connection, dichotomy, contrasting analysis of knowledge and understanding you have gained throughout the semester. Your entry needs to end with with open question to be discussed in class.
    • Blog entry (inactive).

Synthesis and Integration Course Content Part II

  • Friday 12/13 — 12:05-1:40 pm
    • Homework: Please review the course content from the beginning of the semester and post a blog entry highlighting a connection, dichotomy, contrasting analysis of knowledge and understanding you have gained throughout the semester. Your entry needs to end with with open question to be discussed in class.
    • Blog entry (inactive).




Keywords:Fall 2013 Materials and schedule RNP   Doc ID:58559
Owner:Michel W.Group:DS 875 Ruminant Nutrition Physiology
Created:2015-11-28 10:00 CSTUpdated:2015-11-28 13:49 CST
Sites:DS 875 Ruminant Nutrition Physiology
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