Feed factors affecting feed intake of fattening pigs

Feed factors affecting fattening pig feed intake 1 wet and dry problems Now there are three kinds of feed materials for pigs, namely: dry powder feed, wet mix feed (water feed 1:1) and thin feed. According to experiments, wet mix feed feed method has the best feed intake and thin feed is the worst. 2 crushed corn particle size requirements in 0.8 mm-1.5 mm is better, if too coarse, feed utilization rate decreased, resulting in waste; too fine, long time may cause digestive tract ulcer, not conducive to health, while too fine feed palatability also decreased, thus affecting feed intake. 3 Crude fiber content level If the crude fiber content in the feed is greater than 6%, the feed intake of pigs decreases. 4. Salinity requirement of normal growth finishing pigs was 0.45%. If salinity decreased from 0.45% to 0.2%, feed intake and weight gain of pigs decreased by 20% and 38%, respectively. 5 Sweetener pig taste is very developed, its tongue taste buds three times the number of humans, pigs most like to eat is sweet, such as feed containing sweeteners, feed intake increased. Second, changes in feed odor will also affect pig intake. Pigs have an abnormally developed sense of smell, so they are very sensitive to changes in feed odor and even affect intake. 1. The change of fragrance, such as the conversion between frankincense type, fishy type, fish flavor type and sweet flavor type, or the exposure to the air for too long, which makes the smell volatilize and fade, will affect its intake. 2 feed moldy deterioration such as feed contaminated by mold, so that feed moldy produce mildew taste, whether from the smell or palatability will make the pig feed intake decline. 3 feed rancidity environmental temperature is high or feed storage time is long, the crude fat in the feed will be oxidized rancidity, appear we usually say hala taste, make its feed intake decline. 4 Different types of oil, such as soybean oil and corn oil added to feed, smell is different, if there is a change, it will affect feed intake. 5. The influence of special smell of other raw materials on feed, such as the amount of fish meal content, quality and so on. Third, some feed ingredients directly affect the physiological response of pigs, so that their feed intake decreases. 1 Amino acid deficiency or imbalance in feed has a greater impact on pig feed intake. The results showed that the feed intake of pigs increased with the increase of lysine level in feed, but decreased to a certain extent. 2 mineral feed zinc, phosphorus deficiency and calcium, manganese, iodine and iron excess, will cause pig appetite is not good. 3 vitamin B1, B2, B12 and niacin, pantothenic acid deficiency will make piglets feed intake decline, such as B1 deficiency, will affect the tricarboxylic acid cycle in pigs, so that propionic acid in the body a large amount of accumulation, and damage the digestive tract system, affect appetite. 4. A large number of experiments on antibiotics have proved that adding a small amount of antibiotics to pig diets can increase pig feed intake by 7%-15%. Water is the source of life, and water is also a necessary substance for transporting nutrients. At the initial stage of water shortage, pig appetite decreased significantly, especially do not like to eat dry powder, with the increase of water loss, pig appetite may be completely abandoned. 6 Energy aspect feed energy content high low feed intake, conversely energy low feed intake high. In addition, some pig diseases such as parasitic diseases, colds, gastroenteritis, etc., changes in the temperature of pig houses, transfer of pigs, combination of pens, re-feeding, epidemic prevention process, etc. will affect the feed intake of pigs-------------------------------------- Well, it's really good material, worth learning-------------------------------------- - ------------------------------------------------------------------------------------------------------- It's quite comprehensive and worth standing up for. -------------------------------------- At present, some drugs have bad taste added to the feed or antagonistic effect with other nutrients, which will also affect the taste and eating situation--------------------------------------- ------------------------------------- Looks good, huh?