Troubleshooting Nutritional Disorders
Contents
1. 3 44 Shaver effective and physically effective NDF content eNDF and peNDF respectively non fiber carbohydrate NFC content starch content and buffers yes or no and feeding rate 7 a How Do The Feedstuffs Look The feedstuffs should be evaluated for the following vv v v v v v v v DM content of wet ingredients nutrient composition processing of grains and protein supplements particle size of forages and grains smell and fermentation analysis of silages spoilage bunk stability i e heating molds and mycotoxin analyses What s Coming Out Of The Mixer The total mixed ration TMR should be evaluated for the following v v v v v v DM content errors in ingredient feeding rates errors in wet ingredient DM measurements or ration adjustments scale calibration nutrient composition and particle size a What s In The Bunk The bunk mix and bunk management should be evaluated for the following vv v v v v type of bunk separation during TMR dispensing sorting during eating feed availability refusal yes or no and percentage refusal feeding frequency feed access time Troubleshooting Nutritional Disorders 45 variability in feeding schedule feed push up bunk space bunk competition i e grouping and slug feeding v v v v v a What Does The Cow Say Cow groups should be evaluated for the following incidence of DA SARA sole ulcers a2. Troubleshooting Nutritional Disorders Randy D Shaver Room 266 Animal Sciences Building 1675 Observatory Drive University of Wisconsin Madison WI 53706 Email rdshaver facstaff wisc edu Take Home Messages Digestive disorders sub acute rumen acidosis and displaced abomasum cause economic loss in dairy herds through treatment costs production loss and premature culling Evaluate ration formulation feed quality and physical form feed delivery bunk management cow comfort and animal performance parameters when troubleshooting digestive disorders gt Herds with inadequate feeding and management programs for transition cows are at an increased risk of developing nutritional disorders Introduction A scheme for troubleshooting nutritional disorders in dairy herds will be outlined in this paper The focus of this paper will be on the digestive disorders sub acute rumen acidosis SARA and displaced abomasum DA These digestive disorders cause economic loss in dairy herds through treatment costs production loss and premature culling a What s On Paper Formulated rations should be evaluated relative to NRC 2001 or industry standards for the following nutrients ingredients or parameters dry matter DM content DM intake DMI forage concentrate F C ratio neutral detergent fiber NDF content NDF from forage content v v v v v Advances in Dairy Technology 2002 Volume 14 page 4
3. nd laminitis milk yield and fat test body condition cud chewing manure consistency grain passage and passage of large forage particles lying in stalls versus standing in stalls and alleys how lock ups are managed and heat abatement vv v v v a Do Not Overlook Transition Cow Feeding And Management Herds with inadequate feeding and management programs for transition cows are at an increased risk of developing nutritional disorders a Conclusions Troubleshooting digestive disorders involves the evaluation of ration formulation feed quality and physical form feed delivery bunk management cow comfort and animal performance parameters Close attention must be paid to transition cow feeding and management programs as this is the major risk period for nutritional disorders EACC AC aE CS
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