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Nutritional/Metabolic Problems in Sheep
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Young Lambs Enterotoxemia Symptoms Clostridium perfringens type C
Sudden death in 7-21 day old lambs
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Young Lambs....continued Prevention
Booster dams in late gestation Vaccinate lambs at 21 days and weaning Orphan vaccination Maximum colostrum intake Misdiagnosed-selenium/Vit. E deficiency
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Goiter Symptoms Enlarged thyroid Poor wool coat at birth
Low vigor/survival Stillbirths
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Goiter.....continued Prevention New NRC increased iodine levels .8PPM
Iodized salt Compensate for goitergens (kale, brassicas, etc.) New NRC increased iodine levels .8PPM further increased with cold temps
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Finishing Lambs Enterotoxemia/Overeating Symptoms Best doing lambs
Uncoordinated movement neurological Rapid death
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Finishing Lambs...continued
Prevention Vaccination - toxoid Bunk management Gradual ration changes Antibiotics Misdiagnosed-polio and Vit. E/Se deficiency, pneumonia
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Urinary Calculi •Wether lambs and stud rams
•Several types-phosphate, calcium, silica •Problem-concentrates are low in calcium and high in phosphorous
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Urinary Calculi...continued
•Prevention Water intake Salt Ammonium chloride or sulfate Add calcium to achieve 1.5:1 ratio to phosphorous Never add phosphorous to lamb rations if corn is primary energy source
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White Muscle/Stiff Lamb Disease
Symptoms Stiff rear legs and arched back Sudden death Aspiration Pneumonia Poor suckling reflex
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White Muscle/Stiff Lamb Disease...continued
Cause Deficiency of Vit. E and/or Selenium Note: Selenium is toxic but Vitamin E is not it is also cheap High grain rations reduce Vit. E activity Newborns only source of E is milk
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Results - Serum E ewes Con E-G E-L E-GL Pretreatment 1.27 1.26
Pre-lambing a 1.91b Post-lambinga a 1.13b Mid-lactation .97a .95a 1.28b 1.37b Milk e at 3 days a,b Row means with different superscripts differ (p<.05).
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Results - Serum E lambs Con E-G E-L E-GL 3 days 1.08 1.08
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Rectal Prolapse Prevention Longer tail docking Less dusty feed
Prevent pneumonia Shearing Feed some long fiber Bedding, space and ventilation
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Polioencephalomacia Thiamine deficiency Prevention
Maintain rumen health Gradual ration changes Feed some long fiber Sulfur intake w/ ddgs
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Copper Toxicosis Breed Susceptibility Suffolk and Texel
Mineral interactions-Mo & Su, along with high Zn & Ca Normal copper, low molybdenum
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Copper Toxicosis...continued
Prevention Sheep specific feeds No additional copper Feed some Mo CU & MO are both toxic CU:MO ratio 6-1 up to 10-1
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Copper BMPS Sample feed deliveries
Monitor feed delivery for appearance and texture Label sample Date, amount, what it was fed to, freeze, store six months Read mineral tag look for sodium molybdate
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Sheep Mineral, Kansas GUARANTEED ANALYSIS
Calcium 7% Phos. 5% Salt 45% Sulfur 1% Magnesium 1% Zinc 150 PPM short Iodine 125 PPM okay Cobalt 150 PPM okay Selenium 10 PPM super, super short Better mineral Calcium not needed with Phosphorous not needed with High salt equals lower intake levels ++ DGM:ISU:2012
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T.M. SALT w/ Selenium T.M. Salt for sheep GUARANTEED ANALYSIS
Salt, min % Salt, max % Zinc, min 0.60% PPM Magnesium, min 0.52% PPM Manganese, min 0.25% PPM Iron, min 0.25% PPM Iodine, min % PPM (was short) Cobalt, min % PPM Selenium 90 PPM % max. PPM = mg/kg move decimal four places DGM:ISU:2012
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INGREDIENTS Salt, Vegetable Oil, Calcium Sulfate, Magnesium Oxide, Zinc Oxide, Ferrous Sulfate, Manganese Sulfate, Sodium Selenite, Cobalt Carbonate, Ethylenediamine Dihydroiodide, Sodium Molybdate. DGM:ISU:2012
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Pregnancy Toxemia Cause - Excess fat catabolism and ketone accumulation Prevention Over conditioned ewes Increased conc. feeding LG Fetal scans Pre-lambing shearing
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Pregnancy Toxemia...continued
Treatment Propylene glycol Induced parturition Glucose source and CMPK therapy Severe cases usually do not recover
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Grass Tetany Hypomagnesia Cause: excess potassium
Lactating ewes on lush, spring pasture N fertilization increases risks
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Grass Tetany...continued
Magnesium oxide in mineral poor palatibility. Sudden death-confirmation by necropsy Stress induced
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Milk Fever Ewes vs. Dairy Cows Cause Calcium deficiency ??
Stress induced DCAB Also P, Mg short Vitamin D ????
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MIlk Fever...continued Late gestation ewes carrying triplets Symptoms
Depressed, lethargic, recumbent similar to ketosis, cold ears Treatment Calcium gluconate Rapid response
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Wool Pulling Cause Inadequate dry matter intake
Small particle size, effective fiber Low phosphorous intake Starvation
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Wool Pulling...continued
Prevention Maximum 50% concentration ration Improved feeding technique Offer some low quality, long forage Evaluate phosphorous level
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Vaginal Prolapses Causes Overfeeding roughage Genetics Short docks
Fat ewes
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Vaginal Prolapses...continued
Prevention Feed higher quality roughage in LG Restrict roughage intake esp. for ewe lambs Adequate bunk space Prevent obesity in ewes
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Listeria
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BMP, listeria Corn silage feed adequate amounts correctly stored and harvested Dirt Tub grinder Rotten feed-Feedlot
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Summary Common sense eliminates most disorders Shepherd mistakes creates a lot of the disorders Seek advice if not sure of what you are doing
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