Pig International - September 2017 - 7
PigInternational ❙ 7 As the number of phytogenic compounds and commercial mixes of them continue to increase, we need at least a basic understanding on the main mode of action of these molecules to distinguish which product is most suitable for each case, and even to decide which product to buy among several that appear to be similar in composition. The fact that some of these compounds are highly volatile often confounded results where animals appeared not to respond to their presence in the feed. In addition, in the case of phytogen- Initial attempts with phytogenics kerdkanno iStockPhoto.com When phytogenics first appeared on the market, they were either mixes of powdered spices or crude extracts of herbs and spices; such products are still available. Nevertheless, the lack of standardization in using such unrefined raw materials meant that quality control was difficult. September 2017 ❙ www.WATTAgNet.com ics, where a little is good, more is harmful. The best example can be seen in capsaicin, a pepper compound responsible for the hot-chili taste. A small dosage will enhance digestibility of certain nutrients,