Animal nutrition expert calls for improved feed strategies to cut greenhouse gas emissions and boost livestock production.

A Professor of Animal Nutrition says poor quality livestock feed, especially during the dry season, is silently fuelling climate change.

Prof. Terry Ansah, Professor of Animal Nutrition and Dean of the Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies (UDS) called on Ghana to take deliberate steps to improve animal feeding to reduce greenhouse gas emissions and to boost livestock production.

He was speaking to agrighanaonline after delivering the 19th Professorial Inaugural Lecture of UDS in Tamale.

His lecture was titled “Feeding the Future: Transforming Sheep and Goat Farming in the Arid and Semi-Arid Zones through Innovative Feed Solutions.” Prof. Ansah emphasised that there is a link between poor feed quality and greenhouse gas emissions.

The Professor of Animal Nutrition explained that “when animals depend heavily on low-quality feed, especially during the dry season, they emit more greenhouse gases. He said “improving feed quality will help suppress these emissions.”

Animals such as cattle, sheep, and goats have microbes in their rumen called methanogens. These microbes produce methane during the fermentation of feed, which is released into the atmosphere through belching.

Scientific studies show that lower-quality feeds, with reduced digestibility, tend to produce more methane compared to higher-quality feeds.

According to the FAO’s report on “Tackling Climate Change through Livestock”, improving feed quality and balancing feed nutrients can significantly reduce enteric and manure emissions, enhance animal productivity, and offer an effective pathway to curb greenhouse gas emissions.

Ghana’s Fifth Greenhouse Gas Inventory Report also reinforces this concern. It states that livestock remains a major source of methane emissions. In 2019 alone, livestock accounted for 82.3 percent of all agricultural methane (CH₄) emissions, with cattle identified as the biggest contributors, followed by goats and sheep.

The report also shows that between 1990 and 2019, there were no significant improvements in feed quality or waste management systems, contributing to a steady rise in emissions.

In view of these findings, Prof. Ansah advocates a shift from over-reliance on natural pastures to the deliberate cultivation of quality forages.

He recommends forage varieties such as Elephant Grass, which provide higher crude protein content and total digestible nutrients. “These grasses can be interplanted with crops and harvested every three to four weeks,” he advised.

He noted that the nutritional value of natural pastures has declined rapidly due to factors such as urban settlement and land use changes. This not only stunts animal growth but also increases greenhouse gas emissions through inefficient digestion of poor-quality feed, leading to higher methane production.

To address this challenge, Prof. Ansah highlighted the importance of farmer training and capacity-building on feed conservation techniques like haymaking and silage production.

These methods, he noted, would allow farmers to store and balance feed nutrients throughout the year, ensuring livestock receive quality feed even during lean seasons.

“Such efforts would not only boost animal productivity but also reduce the carbon footprint associated with livestock production in the country,” he added.

He further promoted intercropping strategies, suggesting that farmers plant grasses as border intercrops alongside their main crops. “While waiting for your crops to mature, you can frequently harvest the grasses to feed your livestock and even sell the surplus to other livestock farmers,” he explained.

Prof. Ansah stressed that the livestock sector holds tremendous potential for Ghana’s economy, particularly in the arid and semi-arid zones.

“If your livestock is in good health, a farmer earns more money,” he said, urging greater attention to livestock feed systems to unlock this potential.

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