subject: cattle

Success of African Cattle Linked to Admixture Event 1,000 Years Ago

Success of African Cattle Linked to Admixture Event 1,000 Years Ago

If cattle had ancestry.com or 23andMe (er, make that 31andMe), it would look a lot like this study. An international team of researchers sequenced the DNA of 172 cattle from 16 breeds indigenous to Africa to understand their genetic history and identify genetic markers for traits related to the cattle’s survival and success (and that of the pastoralist populations who rely on them) across the continent over the last several millennia. Read More...

The Environmental and Nutritional Impact of Removing Dairy Cattle

The Environmental and Nutritional Impact of Removing Dairy Cattle

The United States dairy industry is a major contributor to the US food and nutrient supply. Dairy products are a major source of protein, calcium, and many essential vitamins not just in the US but all over the world. The US dairy industry also accounts for 16 percent of the greenhouse gas emissions from all of US agriculture, and contributes roughly 1.58 percent of the total US greenhouse gas emissions. Read More...

California’s Dairy Industry Has Grown Kinder to the Environment

California’s Dairy Industry Has Grown Kinder to the Environment

Milk is big business in California. It’s the agricultural product that brings in more farm revenue than any other in the state. It employs about 190,000 workers, and involves 1.78 million cows. Indeed, dairy has been important to California’s economy for decades, and over time innovations in animal husbandry, feeding and in growing crops that dairy cows eat have led to substantial changes in greenhouse gas emissions. Recently, Ermias Kebreab and his colleagues at the University of California, Davis, calculated exactly how much these emissions have changed in the 50 years from 1964 to 2014. Although the total emissions from the state’s dairy industry increased over that period, the state also produced much more milk, and the industry has become more efficient in terms of its emissions. Read More...

Developing a Better Cattle Reference Genome

Developing a Better Cattle Reference Genome

Cows are one of our major domestic animals, with about 1.4 billion domesticated cattle being raised for meat and dairy all over the world. Humans have long drawn from the existing genetic variation in cattle populations to select a variety of breeds with useful traits. The sequencing of the cattle genome enhanced the selection of cattle by allowing the use of genomic tools to select traits. Read More...

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