Docking (~91 %), castrating (~78%), and disbudding are management practices routinely performed on sheep and goat farms. Maintaining a high standard of animal welfare should be a consideration in all decisions related to docking, castrating, and disbudding. Docking lambs The tail protects the sheep's anus, vulva, and udder from weather extremes. Docking prevents fecal matter from accumulating on the tail and hindquarters of sheep and lambs. Research has shown that tail docking greatly reduces fly strike (wool maggots), while having no ill effect on lamb mortality or performance. Banding tails The simplest and most common method: apply a rubber ring (band) to the tail using an elastrator tool. Banding is a bloodless method of tail docking. The band cuts off the blood supply to the tail, The tail falls off in 7 to 10 days. Some producers cut the “dead” tail off before it falls off. Lambs should be at least 24 hours old before bands are applied, Bands should only be applied during the lamb's first week of life. When the elastrator technique is used, it is very important that the lamb be protected against tetanus If it is practical, the use of a local anesthetic, such a lidocaine, can be used to reduce the pain felt by the lamb. Scrub with betadine for disinfecting, also it helps for position correctly the rubber band Landmark: no shorter than the distal end of the caudal tail fold Too short rectal & vaginal prolapse http://www.youtube.com/wa tch?v=6EkEm7Rbm7k Castration of rams and bucks The decision to castrate ram lambs and buck kids should be based on the management preferences of the producer and the demands of the market place. Ram lambs grow faster than ewe and wether lambs and when ram lambs are marketed at a young age (less than 5-6 months), the market place usually does not discriminate in price. Buck kids grow faster than wether kids until they reach sexual maturity Castration by banding An elastrator band can be placed around the neck of the scrotum, with care taken not to place the band over the rudimentary teats. The scrotum will shrivel up and fall off in two to three weeks. As with docking, the “dead” scrotum may be removed after a few days. Both testicles must be below the placement of the band. If one testicle is missed Castration Both testicles must be below the placement of the band. If one testicle is missed, it will be retained in the belly cavity, resulting in a "bucky" lamb or kid. A short-scrotum is a male whose testicles are pushed above the band. Castration by banding is painful and should be done at a young age (1 to 7 days). Some experts advocate the use of lidocaine to reduce the pain felt by the animal. As with banding tails, lambs and kids should be protected against tetanus though either colostridial immunity or use of the tetanus anti-toxin at the time of castration. 10 days later Surgical castration of ram lambs and buck kids Testicles may be surgically removed. With surgical castration, a sharp knife or preferably a scalpel is used to remove the bottom one-third of the scrotal sac. The testicles are removed and the wound is allowed to drain and heal naturally. It is essential that proper aseptic technique be used when the surgical method of castration is used. http://www.esgpip.info/PDF/Technical%20bulletin%20 No18.html Castration – small ruminants Burdizzo emasculatome Crushes the spermatic cord which crushes the blood vessels (thus depriving the testicles of blood supply) and causing them to shrivel up and die Don’t use cattle-size Burdizzo By six weeks of age Hoof care Squeeze shut METHODS Disbudding Electric disbudding iron Chemical cautery Dehorning Barnes dehorner (pg 503) Gigli wire Pros and Cons of dehorning PROS Dangerous weapons Damage can done by fighting Feedlots typically pay less money for horned animals Can cause damage to the facilities Horns may also become tangled in fences, branches, and other objects It is the best interest of the animal to remove the horns at the early age CONS (dehorning) tetanus sinusitis myiasis Abortion decreased milk production Death prolonged healing time of the resultant surgical defect regrowth of the horns (scur formation) Longitudinal cross-section of a horn, showing extension of the frontal sinus of the skull into the horn. Dehorning, which is performed at the base of the horn, exposes the sinus Disbudding destroys horn cells Surgical Removal Dehorning is usually performed on a conscious, sedated animal with local anesthesia for control of pain. Cornual nerve: blocked halfway between the lateral horn base and the lateral canthus of the eye Needle placement for desensitizing the cornual nerve in the bovine. The cornual nerve follows the temporal ridge to the base of the horn Infratrochlear: halfway between the medial horn base and the medial canthus of the eye Anesthesia for dehorning in the goat. A, Needle placement for desensitizing the cornual branch of the lacrimal nerve. B, Needle placement for desensitizing the cornual branch of the infratrochlear nerve Dehorning Anesthesia Feed and water should be withheld for 24 hrs. and 12 hrs., respectively Xylazine 0.05 mg/lb (20 mg/ml) and butorphanol 0.05 mg/lb mixed together and given IM or IV followed by local block Tolazoline (reversal for xylazine) at 2 mg/lb If general anesthesia is preferred ketamine and valium can be added to the below protocol by mixing ketamine and valium together 1:1 and administering 1cc/20lb of the combination IV. inhalation anesthesia may be used Local block 1 cc of 1% lidocaine or bupivicaine SQ (cornual and infratrochlear) lidocaine toxicity (muscular tremors, severe depression, hypotension and occasionally convulsions) avoid using more than 13cc of 2% lidocaine per 100 lb Dehorning 1. Surgical preparation 2. The skin is incised approximately 1.5 cm from the base of the horn (incorporate all germinal or nonhaired epithelium in the horn removal to lessen the likelihood of regrowth or scur formation) 3. Assistant supporting the goat's head 4. Gigli wire is seated under the caudal aspect of the skin incision on one side and the horn is sawed off in a cranial direction 5. Hemostasis can be applied to control hemorrhage from the superficial temporal artery 6. Remove all blood clots and bone chips/dust from the frontal sinuses 7. Bandage (nonadherant dressing (Adaptic®) covered with antibiotic ointment): EOD – week 1; SIW until sinuses’s close 8. Flunixin should be administered for 2-3 days post-operatively and antibiotic administration is at the discretion of the surgeon. Tetanus antitoxin (500 IU) should always be given and a dose of a CD-T bacterin can also be administered to boost immunity. Chemical Cautery Example Procedure for Dehorning 1. 10 min before dehorning calves are sedated with xylazine (0.2 mg/kg IM). 2. Hair is clipped around each horn bud, a thin film of caustic paste (2 cm diameter) is rubbed into the scalp until each horn bud is evenly coated, and a ring of petroleum jelly is applied around the paste to prevent spreading. 3. Calves are allowed to rest sternally until recovered from sedation. (A) Well-healed scabs after caustic paste dehorning (B) Over-application of caustic paste can damage the calf. Dehorning “Chiva” Heat Cautery - Disbudding This is he fast and almost bloodless method is popular, specially in goat kids (3-7 days) The tip of the disbudding iron is shaped in an open circle. When the electric disbudding iron is sufficiently heated, the tip is centered over the horn bud and applied with circular “rocking” motion with light pressure circular tip of the iron should be about ¾ of an inch in diameter 8 to 15 seconds You will see a “copper-colored" ring around the horn bud if the procedure went as it should http://video.google.com/videosearch?q=dehorning+goats&www_google_domain=www.google.com& hl=en&emb=0&aq=0&oq=dehorning+goat# http://video.google.com/videosearch?q=dehorning+goats&www_google_domain=www.google.com& hl=en&emb=0&aq=0&oq=dehorning+goat# References http://www.sheepandgoat.com/articles/castdockdisb. html http://veterinarycalendar.dvm360.com/avhc/article/ar ticleDetail.jsp?id=587158&sk=&date=&pageID=2 Review ID - Breeds Terminology http://quizlet.com/3852511/production-animalfinal-flash-cards/ TPR of ruminants and PE Gestation period of ruminants Restraint Management procedures: docking, dehorning/debudding, castration