Composting On-farm Mortalities

William Halfman, Agriculture Agent, Monroe County, University of Wisconsin-Madison
Carolyn Ihde, Small Ruminant Outreach Specialist for Wisconsin and Iowa, University of Wisconsin-Madison
(Previously published online with the University of Wisconsin-Madison Livestock Division of Extension)

On-farm composting is an approved method to dispose of livestock mortalities. Advantages include increased biosecurity, timely disposal of mortalities, low risk of environmental contamination, low cost, and relatively simple to do. Composting can be used for occasional mortality, emergency livestock mass casualties, and disease outbreaks.

What is composting?
Composting is an aerobic (with oxygen) recycling process where microorganisms break down organic material in a controlled environment to produce a stable product called humus. There are many ways to compost livestock mortalities. However, there are a few basics that are universal to all systems. Well-managed composting provides aerobic (oxygen-loving) microorganisms with the proper environment to grow and rapidly break down the mortality.

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Sheep Water Requirements and Quality Testing

Jaelyn Whaley, South Dakota State University Extension Sheep Field Specialist
(Previously published online with South Dakota State University Extension: February 09, 2024)

Water intake is critical in ensuring animal health, performance and mitigating heat stress. In general, sheep will drink 1.0 to 1.5 gallons of water for every 4 pounds of dry matter (DM) consumed. Sheep need access to fresh, clean water with adequate space to ensure proper intake. Unclean or poor-quality water can negatively affect consumption, subsequently decreasing productivity, health and growth.

Understanding Water Requirements
Water requirements for ewes are listed in Table 1. Actual water consumption will vary with changes in temperature and humidity. Additionally, water requirement changes with stage of production, as pregnant, lactating and ewes raising multiples have the greatest water requirements. It is generally recommended that ewes raising twins or more require double the amount of water to support fetal growth and lactation (NRC, 2007).

Water is considered the most-important nutrient, because of the vast number of biological functions that rely on water. Growth, development and reproduction may be inhibited by not providing enough fluid water to a flock. Continue reading Sheep Water Requirements and Quality Testing

New Greenhouse Gas Mitigation Strategies Released for the American Sheep Industry

American Lamb Board
(Previously published online with the American Lamb Board: December 14, 2023)

(Image Source: Greenhouse gas mitigation strategies for the US sheep industry – Summary; Erin Recktenwald and Richard Ehrhardt, Michigan State University)

A new resource outlines best practices for the US sheep industry to reduce greenhouse gas (GHG) emissions. The resource summarizes findings in a landmark Environmental Footprint Study by Michigan State University (MSU).

Many of the suggested practices align with the Lamb Crop Best Practices developed to improve on-farm productivity and profitability. Reducing lamb loss, breeding ewes earlier, and optimal nutrition practices are all areas where producers can maximize productivity while reducing GHG emissions.

“It’s encouraging that producers can implement sound practices that have been proven to help with productivity while reducing our environmental footprint,” said ALB Chairman Peter Comino, Buffalo, WY. “US sheep producers have long been stewards of the land, but seeing strategies that make sense for both productivity and sustainability is encouraging.”

Additional strategies to minimize GHG emissions include:

  • Proper fertilizer use

  • Improved manure management

  • The use of renewable resources

  • Adopting new grazing opportunities

Continue reading New Greenhouse Gas Mitigation Strategies Released for the American Sheep Industry