Get out of the misunderstanding of sensory and stimulant

"An animal that feels good and does not necessarily feel good." At the inaugural Guangzhou Safety Food Efficient Technology Exchange Conference held recently, Professor Jiang Qingyan of South China Agricultural University pointed out that feed enterprises and farmers cannot rely on human senses as the basis for judging attractants and feed products. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Ye Yu, a feed distributor in Maoming City, Guangdong Province, has suffered losses in this area. He bought a batch of feeds with good color and smell, but the farmers had problems when they bought them and caused no small losses. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Jiang Qingyan pointed out that the industry's current sensory research on pig and poultry is lacking. Whether it is a feed formulator or a farmer, there are still many misunderstandings about the sensory knowledge of some attractant products. An obvious representative is that blind use of attractants is very blind. Many users rely on human senses to evaluate or use experience. This judgment and evaluation is unscientific. For example, sodium saccharin, which is widely used in feed, is 215 times sweeter than sucrose, but it is applied to pig feed. The perceived sweetness of pigs is only three times that of sucrose. The practical application of this product. The effect is also overestimated. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Compared to people, the taste of pigs is very different. For example, four kinds of synthetic sweeteners commonly used, namely, aspartame, dihydrochalcone, thaumatin, and cyclamate have high sweetness to humans, but the effect in the feed is greatly reduced. Studies have found that sweet, umami, salty and mild sourness can promote pig feed intake; bitterness and strong acid can cause pigs to reject food. “The sensitivity and intensity of the pig's bitterness is far greater than the sweetness and sourness,” Jiang Qingyan stressed. Even if the sweetness and umami taste are sufficient, as long as there is a little bitter taste, the pig's feed intake will be significantly reduced. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Jiang Qingyan said that in general, some alternative raw materials often contain substances that make pigs feel bad, such as wheat, soybeans, soybean concentrate, sorghum, rapeseed meal, peas, sunflower seed meal, DDGS and plant extracts. Chemical substances contained in plant-derived feeds reduce the feed intake and performance of pigs. These substances should be used in limited quantities. At the same time, many antibiotics and pharmaceutical additives, such as tilmicosin, quinine hydrochloride, bentonamide, caffeine, etc., have a strong bitter taste, which can cause a strong antifeedant response in pigs. Such substances should be avoided as much as possible, so high-quality feed ingredients are more important. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Jiang Qingyan pointed out that it is not advisable for some feed manufacturers to add some flavoring agents to the feed ingredients that have problems (mold and deteriorated). Such additives often mislead feed enterprises and farmers in publicity. In an interview with the author, a person in charge of a small feed enterprise in Maoming City revealed that some manufacturers claimed that “the raw material problem can be effectively solved”. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

Wu Chengfu, research and development center of Zhongshan Taishan Feed Co., Ltd. said that good feed itself is a good kind of attractant. Jiang Qingyan believes that under the premise of using good feed ingredients, some effective taste-like attractants can successfully mask the poor palatability of some raw materials (such as rapeseed meal and sunflower seed meal) and significantly increase the feed intake of pigs. . He suggested that the sweeteners can be selected from acesulfame and stevia, while the umami substances are mainly L-amino acids, peptides, IMP and other nucleotides. 4dS China Feed Industry Information Network - based on feed, serving animal husbandry

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