Troy Downing

Retired

Content by Troy Downing

Silage Corn Nutrient Management Guide for Western Oregon

Silage corn is an excellent feed for dairy cattle because of its high dry-matter yield, energy content and palatability. This guide provides nutrient and lime recommendations for silage corn established after ...

Dan M. Sullivan, Troy Downing, Linda Brewer, John M. Hart | Mar 2023 | OSU Extension Catalog Peer reviewed (Orange level)

A horse owner's guide to pasture-associated laminitis

The key to preventing laminitis in your horses is to regulate their time grazing on grass high in nonstructural carbohydrates. Inadequate exercise is another cause of this painful hoof condition.

Scott Duggan, Troy Downing | Jun 2022 | OSU Extension Catalog Peer reviewed (Orange level)

Tasas de Aplicación de Estiércol para la Producción de Forraje en el Oeste de Oregón (Manure Application Rates for Forage Production)

Esta publicación proporciona estimaciones de la eliminación de nitrógeno, fósforo y potasio de cultivos forrajeros que se cultivan en lecherías en el oeste de Oregon. También proporciona orientación sobre las ...

Troy Downing, Dan M. Sullivan | Jun 2023 | OSU Extension Catalog Peer reviewed (Orange level)

Manure application rates for forage production

This guide helps determine the proper rate of manure application for growing forage crops on dairies in Western Oregon with the goal of balancing nitrogen input and output via forage harvesting.

Troy Downing, Dan M. Sullivan | Apr 2025 | OSU Extension Catalog Peer reviewed (Gray level)

Assessing Phosphorus and Potassium Feeding on Oregon Dairies

A study was conducted on Oregon dairy farms in 2002-2003 investigating the quantity of phosphorus and potassium in cow diets and in the produced urine and feces.

Troy Downing, Amy Peters, Patrick French, Kathryn Higgs, Mary French | Sep 2016 | Online resource

The Veterinary Feed Directive: Questions and answers for Oregon livestock producers

Oregon livestock producers must comply with the Veterinary Feed Directive, which affects how they use feed-grade antibiotics. This publication outlines regulations and responsibilities.

Sergio Arispe, Charles Estill, Troy Downing | Jan 2025 | OSU Extension Catalog Peer reviewed (Orange level)

What are your forages worth?

Learn how to calculate the cost of homegrown forages. Compare the value of these forages against the cost of purchasing high-quality forages.

Troy Downing, Michael Gamroth, Amy Peters, Anna-Marie Chamberlain | Jul 2024 | OSU Extension Catalog Peer reviewed (Orange level)

Owning a Dairy Cow or Goat

People who live in the suburbs and own a small acreage often choose dairy cattle or dairy goats as a way to harvest and use their forage. Milk production can reduce the family grocery bill. Goats, ...

Troy Downing, Lisbeth Goddik | Apr 2019 | OSU Extension Catalog Peer reviewed (Orange level)

Ammonia Control Best Management Practices

This publication provides and evaluates best management practices for the control of ammonia lost to the air on dairy farms.

Troy Downing, Michael Gamroth | May 2024 | OSU Extension Catalog Peer reviewed (Orange level)

Soil pH and pasture productivity on the Oregon Coast

Producers have questioned the conventional advice to apply lime to change the pH of coastal soils. We look at one set of data on ryegrass pastures that shows the return on investment may indeed be modest.

Troy Downing | Feb 2024 | OSU Extension Catalog Peer reviewed (Gray level)

Improved Understanding of Fiber Digestibility in Ryegrasses

Dairy nutritionists have long known that forages with the same laboratory analysis could produce significantly different performance in lactating cows. Neutral detergent fiber digestibility (NDFD) may explain much of this variation. The objectives of the study described here were to demonstrate NDFD variation between varieties of ryegrass and season of harvest and to use this information as the basis for an educational Extension program.

Troy Downing, Patrick French | Apr 2009 | Online resource

Fiber Digestibility in Ryegrasses

A look at the fiber digestibility in ryegrasses for cow diets.

Troy Downing, Patrick French | Aug 2008 | Online resource

Convincing Oregon's Dairy Industry They Have a Problem with Phosphorus

In a study published in the Journal of Extension, the phosphorus feeding levels on Oregon dairy farms were assessed and and compared. On average, farms in the study were overfeeding phosphorus by 18% compared to the recommended level.

Troy Downing, Amy Peters, Patrick French, Kathryn Higgs | Jun 2007 | Online resource

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