Comparison of barley and sorghum grain processed at different densities for lactating dairy cows

To vary ruminally degradable starch, sorghum grain was dry-rolled or steam-flaked to different densities and compared with dry-rolled barley in total mixed diets fed to 40 lactating cows (111 d of lactation) assigned to five dietary treatments. Diets contained (percentage of dry matter) 35% alfalfa...

Full description

Saved in:
Bibliographic Details
Published in:Journal of dairy science 1997-09, Vol.80 (9), p.2098-2103
Main Authors: Santos, F.A.P, Huber, J.T, Theurer, C.B, Swingle, R.S, Wu, Z, Simas, J.M, Chen, K.H, Chan, S.C, Santos, J, DePeters, E.J
Format: Article
Language:English
Subjects:
ACIDE GRAS
ACIDOS GRASOS
ALFALFA
ALIMENT COMPLET POUR ANIMAUX
Animal Feed
Animal Nutritional Physiological Phenomena
Animals
BARLEY
Biological and medical sciences
BODY WEIGHT
CASEIN
CASEINA
CASEINE
Cattle
CEBADA
CHEMICAL COMPOSITION
COMPLETE FEEDS
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
CONTENIDO DE LIPIDOS
CONTENIDO PROTEICO
COTTONSEED
COTTONSEED HUSKS
CROP RESIDUES
DAIRY COWS
DIET
DIETA
Edible Grain
FARINE DE POISSON
FATTY ACIDS
Feed and pet food industries
Female
FISH MEAL
FLAKING
FOIN
Food Handling
Food industries
Fundamental and applied biological sciences. Psychology
GAIN DE POIDS
GANANCIA DE PESO
GRAINE DE COTON
GRASA DE LA LECHE
HARINA DE PESCADO
HAY
HENO
Hordeum
Lactation
LAIT
LECHE
LIPID CONTENT
Lipid Metabolism
LIVEWEIGHT GAIN
LUCERNE
LUZERNE
MATIERE GRASSE DU LAIT
MILK
Milk - metabolism
MILK FAT
MILK PROTEIN
Milk Proteins - metabolism
MILK YIELD
Nitrogen - metabolism
NUTRIENT CONTENT
NUTRITIVE VALUE
ORGE
PESO CORPORAL
PIENSOS COMPLETOS
POIDS CORPOREL
PROCESAMIENTO
PROCESSING
PROTEIN CONTENT
PROTEINAS
PROTEINAS DE LA LECHE
PROTEINE
PROTEINE DU LAIT
PROTEINS
REGIME ALIMENTAIRE
RENDEMENT LAITIER
RENDIMIENTO LECHERO
RESIDU DE RECOLTE
RESIDUOS DE COSECHAS
SEMILLA DE ALGODON
SORGHUM
SOYBEAN MEAL
SOYBEAN OILMEAL
TENEUR EN LIPIDES
TENEUR EN PROTEINES
TORTAS DE SOJA
TOURTEAU DE SOJA
TRAITEMENT
UREA
Urea - metabolism
UREE
VACAS LECHERAS
VACHE LAITIERE
VALEUR NUTRITIVE
VALOR NUTRITIVO
WEIGHT GAIN
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To vary ruminally degradable starch, sorghum grain was dry-rolled or steam-flaked to different densities and compared with dry-rolled barley in total mixed diets fed to 40 lactating cows (111 d of lactation) assigned to five dietary treatments. Diets contained (percentage of dry matter) 35% alfalfa hay, 4.1% cottonseed hulls, 10% whole cottonseed, 2% fish meal, 4% soybean meal, and 4.9% of a molasses, mineral, and vitamin supplement. Treatments were 40% sorghum grain either dry-rolled or steam-processed at flake densities of 437, 360, and 283 g/L. A fifth diet containing 42% dry-rolled barley was fed. Cows were blocked according to pretreatment (14 d) milk yield and received experimental diets for 56 d. Increasing ruminal starch degradability by including steam-flaked sorghum grain or barley in the diet did not increase milk yield or milk protein percentage and yield, as was shown in eight previous studies. Steam-flaked sorghum or dry-rolled barley in the diet decreased dry matter intake, resulting in a 10 to 19% higher efficiency of conversion of feed dry matter to milk than that for dry-rolled sorghum. Milk urea N was decreased, and milk casein yield tended to be increased, by steam-flaking sorghum at the moderate density compared with dry-rolling or fine flaking
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(97)76155-1