OREGON STATE UNIVERSITY
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Author: Dr. Susan Kerr, WSU-Klickitat County Extension Director
Publish Date: Summer 2008
It is essential that sheep and goat producers learn how to tube feed young animals. This simple procedure can often save a young animal’s life, thereby increasing lambing and kidding crop rates and enhancing profitability. With a brief amount of instruction and a little practice, even children can perform this crucial task quickly, safely and effectively.
When is tube feeding necessary? If an animal is too weak or otherwise unable to nurse, it needs to be tube fed. Other situations include maternal factors (lack of milk production, lack of mothering, mastitis, death) and management decisions to control various diseases (C.A.E., O.P.P., Johne’s Disease, etc.). If the lamb or kid will drink from a bottle, this is always preferable to tube feeding.
Colostrum is the first milk of a mother’s lactation period. It is produced by the udder in the last weeks of pregnancy and lasts for a few days after delivery. It is darker and thicker than milk. It contains high levels of fat, protein, vitamins and special proteins called antibodies. These antibodies are produced by the dam’s immune system to protect her against various diseases such as tetanus, enterotoxemia, E. coli and other diseases she was vaccinated against or experienced naturally in her life. Giving dams a booster vaccination two to three weeks before kidding or lambing helps ensure high levels of antibodies in colostrum.
Newborn animals must ingest colostrum within a few hours of birth. A newborn’s intestinal tract is not very selective in the first hours of life; antibodies can be absorbed whole, which is essential for their function. After 12 hours of age, antibodies and other proteins are digested into amino acids and then absorbed; they can be used as a source of nutrition but no longer have any disease-fighting ability. The 12-hour time limit should be considered an absolute maximum—producers should strive to ensure adequate colostral intake as soon as possible after birth.
Sources of colostrum in decreasing preference include the neonate’s own dam, another dam of the same species in the herd, frozen colostrum from the same herd, fresh or frozen colostrum from a neighbor’s dam of the same species, fresh or frozen colostrum from another species and commercial colostrum supplements. Commercial preparations should be considered supplements for poor quality or quantity of colostrum, not as colostral substitutes. Each year, producers should harvest extra colostrum from high-producing animals and freeze it in case of emergency; update frozen colostrum reserves every year. Freezing colostrum in two-ounce portions simplifies future use and reduces waste.
Laboratory tests can confirm the quality of a sample of colostrum by measuring its antibody concentration. Blood tests in neonates over 24 hours old can confirm whether or not they have absorbed sufficient levels of antibodies. The lack of a protective level of circulating antibodies is called failure of passive transfer (FPT). FPT makes a young animal very susceptible to disease; many animals with FPT die of scours or pneumonia within two weeks of birth. After the first 12 to 24 hours of life, the gut is “closed” and can no longer absorb intact antibodies, so the only treatment for FPT is a costly intravenous transfusion of plasma antibodies.
The diagrams below depict a simplified cross section of an animal’s head. The “Swallowing” diagram shows the structures of the throat area during swallowing and the “Breathing” diagram shows the same structures during breathing. During swallowing, food and liquids are funneled down the esophagus instead of into the airway by the automatic function of protective flaps of tissue.
1.Determine that tube feeding is necessary. If a newborn lamb or kid has not nursed within 12 hours of birth, it should be tube fed. If an animal is nursing or can take a bottle, there is no need to tube feed.
2. If the animal is hypothermic (cold), warm it before administering colostrum. Neonates must be warmed before colostrum can be absorbed properly. Stick your finger in the animals’ mouth—if it seems cool, the animal needs to be warmed. Take it indoors, fashion a wool sweater for it, put it under a safe heat lamp, place it near a wood stove or do whatever it takes to warm it until the mouth feels warm. A moribund animal may need to be immersed in warm water for rapid warming. Dry all neonates thoroughly before putting them outdoors.
3. Warm the fluid to be administered to about 104ºF. There is no need to feed colostrum if the animal is older than 24 hours old—milk will do. Electrolytes should be administered if the animal is weak due to dehydration from diarrhea. Frozen colostrum should be thawed in a warm water bath, not a microwave; microwaving will destroy the beneficial and protective antibodies in the colostrum.
4. Assemble sanitized equipment, including a feeding tube and a 60-cc dose syringe. Tube feeding kits are available through livestock catalogs and farm supply stores. An open ended, 0.4 meter-long piece of soft, flexible polyethylene tubing, six millimeters in diameter, with a smooth end is a safe and effective stomach tube.5.Place the tube alongside the neonate’s body, with the mouth of the tube at the animal’s mouth and the end at its last rib, where the stomach is located. Note how far the tube will have to be inserted to reach the last rib.
6. Sit in a chair and restrain the animal by facing it away from you, gently holding it by its shoulders between your knees; the animal’s body will dangle down between your legs. If an assistant is available, she should hold the animal by the shoulders and let its body dangle. Never tube feed an animal on its side or it may inhale the fluid you are administering. 7. Hold the animal so its head is in a normal position. Dip the tip of the tube in clean water and slowly insert the tube in the animal’s mouth. There is no need to use pressure or force, just gently advance the tube toward the back of the animal’s mouth. The animal should swallow the tube readily and you can see the swallowing motion if you watch carefully. THE GOAL IS TO INSERT THE TUBE INTO THE ESOPHAGUS, NOT THE TRACHEA. If the tube enters the trachea (windpipe), the animal should cough, gag and react violently, but a moribund animal may not react. An animal that has swallowed the tube can still bleat and cry; an animal that has inhaled the tube can not make these noises. 8. Check correct placement of the tube by several methods:Johne’s Disease, Brucellosis, mycoplasmosis, O.P.P., C.A.E. and other diseases can spread to your herd through infected colostrum. If you are using colostrum from another herd, be sure the source is disease-free or heat-treat the colostrum. It is a challenge to pasteurize colostrum without destroying its beneficial antibodies. The key is to keep the colostrum between 132.8ºF and 134.6ºF for 60 minutes. To disinfect tube feeding equipment, rinse well immediately after use. Wash thoroughly with warm, soapy water to remove all debris. Dilute one ounce of bleach with 21 ounces of water and submerge all equipment in this solution for two minutes. Remove, rinse well, air dry and store in a clean place. Wash your hands well before and after tube feeding.
