I. Analysis of reasons for fewer litters 1, the reasons for the variety Some breeds have low reproductive capacity and cause fewer litters. (eg Duroc, Pitlan) 2. Reasons for age The age and parity of the pig affect the number of litters. The reproductive performance of sows with 1-2 fetuses was low, the number of ovulation was low, and the number of litters was small. The reproductive performance of 3-5 fetuses was the best. The number of litters and the number of live pigs born were the highest; after 6-7 months, the reproductive performance of the sows declined, and due to physical exertion, the litters agreed to fatigue, excessive time, and stillbirth. 3, feeding reasons In the case of compound feeds that do not give full nutritional value to the sow, the sows are too obese to feed the fermented spoilage feed. The high urease activity of the mycotoxin in the soybean meal exceeds the quality of the bran and influences the sow’s litter size. number. 4, management reasons The gilts were too low in body weight, too young for months, and had prematurely mated or did not reach sexual maturity. The gilt mating age should be more than 7 months of age and weigh 120-140 kg. Overweight and weight of the sow during mating affected the number of ovulation of sows and thus affected litter size. Irrational feeding during pregnancy and stress during pregnancy, fighting, climate change can all result in a decrease in the number of fetal implantation. 5, other reasons Vaccination time is not reasonable and sows reduce injections during pregnancy. With the impact of the disease, many diseases can cause a decrease in the number of litters, an increase in the proportion of stillbirths and mummies. Such as swine fever, blue ear, small, pseudorabies, Japanese encephalitis, foot-and-mouth disease, streptococcus and so on. Second, several points should be noted in the sow feeding and management process: (1) Strengthen epidemic prevention and reduce the infection of exotic wild virus (2) reduce the introduction of foreign countries to avoid cross-infection (3) Regularly perform serum tests and immunize against vaccines according to the situation. (4) Strengthen feeding management and reduce the number of litters caused by management reasons. (5) Introduce pigs with high reproductive performance to improve the production efficiency of sows. Defoamer (defoaming Agent)
Feature
l Can inhibit the foam forming
l Excellent defoaming property quickly
l Stable and no separated layer in water based system
l Good compatibility with water based resin and no floating oil phenomenon
Application and dosage:
l Water based wood paint/coating
l Water based industrial paint/coating
l Water based automotive trim adhesive
l Emulsion paint/coating
l Water based coating etc.
Remark: Dilute the WC-DF505 by 3~5 times with water and add it into water based system.
Chemical composition:
l Modified polydimethylsiloxane polymer
Technical data:
l Appearance: Yellowish liquid
l pH (25℃): 6~7
l Active ingredient: ~30%
l Viscosity (25℃): 500-1000 Cp
Package, Storage and Transportation
l Available in 200 kg/ barrel or 25 kg/ barrel
l Storage period: ~12 months in closed containers, shady and dry place
Defoamer Agent,Fatty Alcohol Defoamer,Polyether Defoamer,Organosilicone Defoamer Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com
