title: Prediction of manure and nutrient excretion from dairy cattle.
abstract: Accurate estimates of manure excretion are needed for planning manure storage facilities and for nutrient management. Data sets from metabolism studies conducted at several universities were compiled and evaluated for excretion of total manure, N, P, and K. Animal groups included calves weighing up to 204 kg, heifers weighing between 274 and 613 kg, nonlactating cows, and lactating cows. Regression equations were developed to predict excretion of total manure, total dry matter, N, P, and K. Predictors used in the regression equations for lactating cows included milk yield, percentages of protein and fat in milk, dietary concentrations of crude protein and neutral detergent fiber, and intakes of nutrients. The regression equations provide improved predictions of excretion and enable more accurate planning of manure storage and nutrients to be managed at the farm level.
authors.affiliation: Puyallup Research and Extension Center, Washington State University, Puyallup 98371, USA.
authors.forename: T D
authors.initials: TD
authors.lastname: Nennich
authors.forename: J H
authors.initials: JH
authors.lastname: Harrison
authors.forename: L M
authors.initials: LM
authors.lastname: VanWieringen
authors.forename: D
authors.initials: D
authors.lastname: Meyer
authors.forename: A J
authors.initials: AJ
authors.lastname: Heinrichs
authors.forename: W P
authors.initials: WP
authors.lastname: Weiss
authors.forename: N R
authors.initials: NR
authors.lastname: St-Pierre
authors.forename: R L
authors.initials: RL
authors.lastname: Kincaid
authors.forename: D L
authors.initials: DL
authors.lastname: Davidson
authors.forename: E
authors.initials: E
authors.lastname: Block
mesh_terms: D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle / Q000502:physiology*; D004043:Dietary Fiber / Q000008:administration & dosage; D004044:Dietary Proteins / Q000008:administration & dosage; D005223:Fats / Q000032:analysis; D005260:Female; D007774:Lactation; D008372:Manure / Q000032:analysis; D008433:Mathematics; D008892:Milk / Q000737:chemistry; D008894:Milk Proteins / Q000032:analysis; D009584:Nitrogen / Q000008:administration & dosage / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D016226:Phosphorus, Dietary / Q000008:administration & dosage; D011188:Potassium / Q000032:analysis; D017419:Potassium, Dietary / Q000008:administration & dosage; D012044:Regression Analysis
chemical_list: D004043:Dietary Fiber; D004044:Dietary Proteins; D005223:Fats; D008372:Manure; D008894:Milk Proteins; D016226:Phosphorus, Dietary; D017419:Potassium, Dietary; D010758:Phosphorus; D009584:Nitrogen; D011188:Potassium