How To Prevent And Control Diarrhea In Piglets Caused By Seasonal Changes
The piglet weaning transition has always been a problem that our pig breeders need to pay attention to. As the saying goes, there are three periods in the farms which called “hybridization,delivery,and weaning.” Many of our piglets have problems after weaning like Weight loss and so on. And these problems have also caused various degrees of damage to our farms.
Since the beginning of autumn, there have been varying degrees of cooling, and the cool weather is very comfortable for our sows and finishing pigs. However, the drastic changes in the weather are an attack on our weaned piglets, which will increase weaning stress and cause diarrhea in piglets.
Reasons for diarrhea in weaned piglets:
1.Environmental changes:it leads to the pigs’ Environmental stress. For example,when the temperature difference in the house is more than 10℃, the diarrhea rate will increase 25 to 30%. If the Environmental humidity is very high,it can also increase the frequency of diarrhea.
2.Improper feeding practices: Such as overfeeding or overfeeding, can cause hunger and polyphagia.
3.Gastrointestinal insufficiency:the gastric acid deficiency in piglets , elevated pH, decreased pepsin formation, decreased protein digestibility in feed, incompletely digested feed and increased gastrointestinal pH all provide favorable conditions to reproduction of Intestinal pathogenic E. coli and harmful pathogenic microorganisms.Meanwhile, the growth of lactic acid bacteria is inhibited, resulting in dyspepsia and diarrhea.
4.Immunity Decline: Though the maternal antibody levels decline,the piglets' own immune system development is not complete.When coupling with a series of appropriate responses like the environment, feed changes, the reduce the functions of original imperfect immune system. As a result, the resistance of the piglets to disease is very fragile, and pathogenic E. coli and other harmful microorganisms can easily invade and cause diarrhea in the piglets.
5.Viral diarrhea：it is mainly infectious gastroenteritis, epidemic diarrhea and rotavirus infection. It is characterized by vomiting, watery diarrhea and dehydration and has fishy faeces which mixed with air bubbles, curds or undigested feed. The incidence and mortality of piglets within 10 days of age were relatively high. The body of the dead piglets was obviously dehydrated. We also could see mesenteric hyperemia, lymph node swelling, mild gastric mucosal hyperemia, and white or yellow-green liquid in the intestines in the necropsy.
6.Parasitic diarrhea Diarrhea: it mainly caused by coccidia and aphids and often occurs in pigs over 20 days of age. It is generally chronic and often accompanied by symptoms such as loss of appetite, cough, dyspnea, and anemia.Some piglets may have the situation of Alternated constipation and diarrhea, or elevated body temperature. All above could make Poor pigs stunted, fail to die or become "stiff pigs." As a preliminary diagnosis. If you suspected that it caused by parasite, you can collected faeces as pathogen culture or do a egg inspection.
Weaning piglet diarrhea prevention and control:
1.Creeping feed timely. It promotes the development of the gastrointestinal tract of piglets, relieves the itching of piglets' gums, and reduces the stress of feeding after weaning.
2.Improve the living environment, reduce stress response, and create an environment conducive to the growth of piglets. It mainly does good jobs of keeping cold and warm, clean and disinfection work to prevent bacterial infection.Before weaning piglets enter the nursery, they must thoroughly clean, wash and disinfect inside and outside of the nursery to kill bacteria.
3.Feed intake should be controlled within 5 days to 6 days after weaning.It’s better to feed 70% to 80% satiety and feed less frequently (6 times to 8 times a day and night). Gradually,it transitions to free feeding. Excessive feed restriction should not be allowed. The principle of feeding the total amount of feed is to make the piglets eat as much as possible without the occurrence of nutritional diarrhea.
4.Add in feed: Coated zinc oxide
The transition phase of weaning is directly related to the pig's health status, daily growth, and feed-to-meat ratio. Coated zinc oxide can reduce diarrhea rates by reducing the intestinal fluid exudation and convergence intestinal tract. Besides It can inhibit the growth of pathogenic microorganisms, and promote the growth of beneficial bacteria.