A cannula acts as a porthole-like device that allows access to the rumen of a cow, to perform research and analysis of the digestive system and to allow veterinarians to transplant rumen contents from one cow to another.

2014年5月21日 · Farmers have a wealth of technology and data at their fingertips to get the best from livestock, but one old-fashioned technique still remains. Researchers in Switzerland have fitted 14 cows with...

2014年5月22日 · The process called a cow cannula, involves cutting a hole directly into the cow’s stomach, creating a window, similar to a ship. The cannula acts like a porthole and gives farmers direct access to the cow’s rumen, allowing them to see exactly what’s going on inside.

2016年5月26日 · They're called fistulated cows, and a chunk of these animals' abdomens is removed to expose their stomachs. This is not OK.

2014年9月12日 · Rumen flora from a fistulated cow helps not only sick cows, but also sheep and goats because they share similar digestive systems. Performed with the cow standing, local anesthesia is used and the rumen is surgically attached to the skin and body wall.

2019年6月21日 · Portholes are openings on the side of a cow that allows researchers to access an animal's stomach with a cannula.

2022年4月19日 · In a cannulated cow, a porthole is inserted into the side of its body to obtain rumen bugs for treatment of ill cows. A cannula or a sturdy tube is inserted into the opening, and is used to obtain the microbes from the healthy cow’s body.

2015年5月16日 · A Jersey X cow called Portia has been living with a window in her stomach since 2002 at Tufts University in the US. So what is the point of the window, or fistulated stomach as it is called, in Portia’s stomach? It is so vets can study how cows digest their food.

2013年10月10日 · The window is plugged with a plastic cup, which scientists take off when they need to reach into the cow's stomach. This helps them better understand how the stomach works, and can also be used...

2007年3月14日 · At UC Davis, researchers teach in a hands-on environment. But at the Dairy Teaching and Research Facility, the experience is also hands-in. The campus is home to five fistuiated cows, two of which are pres- ently producing milk.