The reasons for the decline in feed intake for finishing pigs
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First, the feed palatability factors 1. Dry and wet issues Now feed a total of three kinds of pig feed, namely dry powder, wet mix (water 1:1) and thinner. According to experiments, feed intake by wet feed is the best, and feed intake is the worst. 2. The grading requirements for corn grain size are preferably 0.8-1.5 mm. The fine material palatability will decline, which will affect the feed intake. 3. Crude fiber content level If the crude fiber content in the feed is greater than 6%, the feed intake of the pig is reduced. 4. The salt requirement for normal growing pigs is 0.45%. When the salt content drops to 0.2%, the feed intake of pigs can be reduced by 20% and the weight gain can also be reduced by 38%. 5. Sweeteners Pigs prefer to eat sweet foods. When dietary sweeteners are used, feed intake increases. Second, feed odor changes will also affect the pig's intake 1. Changes in flavoring agents such as frankincense, surimi-type, fish-flavored, sweet type conversion, or exposed to the air for too long, so that the smell of volatile Light, will affect its intake. 2. The feed moldy and degenerate If the feed is contaminated by mold, the moldy taste of the feed mold will occur, and both the odor and palatability will reduce the pig's feed intake. 3. Feed rancidity High ambient temperature or long feed storage time, the crude fat in the feed will be oxidized and rancid, resulting in a hazel taste, which reduces its feed intake. 4. Different types of oils and fats If you add soy oil, corn oil, etc. to your feed, the odor will be different. If it changes, it will affect the feed intake. 5. The influence of special odors of other raw materials on the feed, such as the content of fishmeal and the quality of the fish meal. Third, some feed ingredients directly affect the physiological response of pigs, resulting in a decrease in feed intake. 1. Feed intake of amino acids increases with the increase of lysine levels in the feed, but after a certain degree of feed intake, it decreases. the trend of. 2. Minerals The lack of zinc and phosphorus in feed and the excess of calcium, manganese, and iron can all result in poor appetite for pigs. 3. Vitamins vb1, vb2, vb12 and the lack of niacin, pantothenic acid will reduce the intake of piglets. 4. A large number of antibiotic tests have shown that adding a small amount of antibiotics to the pig diet can increase pig feed intake by 7%-15%. 5. In the early stage of water shortage, the appetite of pigs decreased significantly. In particular, they did not like to eat dry powder. With the increase of water loss, the appetite of pigs may be completely eliminated. 6. The energy content of the feed has a high intake of high energy, whereas low energy intake has a high feed intake. In addition, some pig diseases such as parasitic diseases, colds, gastroenteritis, etc., changes in pig house temperature, swarming, laps, restocking, and epidemic prevention during the pig raising process will affect the feed intake of pigs. .