Merlin D. Lindemann, a well-known sow nutrition expert at home and abroad, gave a speech on the nutrition of the sows in the 4th Guangdong High-Level Forum on the Win-Win Situation : pWP China Feed Industry Information Network - Based on Feed, Serving Livestock

The trace element in a sow's nutrition determines what kind of nutrient level we should be in, then in the NRC, or in our general nutrition recommendations, we add a few milligrams of nutrient source per kilogram of diet as a standard, or It is determined by how many nutrients each animal needs per day as a standard. For sows, this scenario is not entirely true. For gilts, the body weight is smaller. After a few births, its body size will be very different. The weight of the sows may be compared with the weight of the light-weight sows. The difference is 2 times. For these sows, we sometimes have to limit feeding. The sows may be fed twice as much as the first sows because we have to limit feeding, sometimes some trace elements will be lacking. . pWP China Feed Industry Information Network - based on feed, serving animal husbandry

The study was done by providing some premixes to some older sows, including vitamins and some trace elements to improve the reproductive performance of the sows. The experiment done on this farm is to first count a data for 2012, a total of more than 15,000 parity sows, the total number of litters in different gestational ages, which is the number of live births. After reaching six or seven births, the number of litters and the number of live piglets decreased, and the number of litters in older pigs decreased. In addition to the decline in litter performance in the late sows, the sows with a mortality rate of three or four births were significantly higher than those of the second. pWP China Feed Industry Information Network - based on feed, serving animal husbandry

This study counts the supply of trace elements per unit of vitamins, and then according to the different gestational age, if the total amount of vitamin trace elements in the sow is calculated according to the unit supply weight, what changes in the different gestational ages. They counted a 105 kg gilt. According to the total amount of vitamin trace elements in the feed, the total amount of vitamin trace elements consumed by the sow per day is calculated in units of kilograms, which is 39.52g per unit kilogram. . pWP China Feed Industry Information Network - based on feed, serving animal husbandry

The sows are fed all the way, and their body weight has also increased. According to this calculation, the total number of vitamin trace elements per unit kilogram is 26.8g. The same method is used to calculate the sows of 3 weeks old. At this time, the production performance of the sows is relatively high, and the total amount of vitamin trace elements per unit kilogram is 19.5 g. Similarly, we chose a sow with a relatively high gestational age. The total amount of vitamin trace elements per kilogram per day is 4.2g, which is calculated as the total amount of vitamin trace elements per kilogram. This weight difference is almost in each unit. 25-30, if we increase this to 19.5, it may increase the cost of feed addition to a certain extent. pWP China Feed Industry Information Network - based on feed, serving animal husbandry

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