Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 148 for “"dry matter intake"”.
-
Dry matter intake prediction of Holstein heifers
… heifers and 5409 observations of individual dry matter intake (DMI) were used to develop an equation to predict DMI. Data were contributed by Pennsylvania State University, University of New Hampshire, Purina Mills, Kansas State University, University of Minnesota, and Virginia Tech. …
-
Verification of equations to predict dry matter intake of dairy heifers
… of an prediction equation to accurately predict dry matter intake (DMI). Heifers ranging from 120 to 430 kg body weight, were randomly assigned to treatments with forage bases of 1) 100% corn silage, 2) 75% corn silage : 25% alfalfa haylage, 3) 50 % corn silage : 50% alfalfa haylage, or 4) 25% …
-
Development of equations to predict dry matter intake of dairy heifers
Equations to predict daily dry matter intake (DMI) of individual animals were developed with 118 Holstein heifers fed totally mixed rations (TMR). Animals grouped according to body weight (136, 227, 317 kg) were fed TMR (corn silage, ground hay, high moisture corn, soybean meal) once daily for 28 …
-
Effects of rumen-protected lysine and dry matter intake on metabolism of dairy cows
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
-
Impacts of postweaning dry matter intake classification on beef heifer performance, prebreeding intake, and reproduction
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
-
The Relationship between Residual Feed Intake, Dry Matter Intake, and Reproductive Performance in Holstein Dairy Cows
… Decreasing the feed consumed, measured here as dry matter intake (DMI), would therefore be advantageous to producers. However, this decrease could result in cows that do not supply the necessary energy to maintain high production, growth, and reproduction. Measures of feed efficiency try to …
-
Effect of Forage Physical Form on Chewing Activity, Dry Matter Intake, and Rumen Function of Dairy Cows
… been extensively investigated as a modifier of dry matter intake (DMI), chewing activity, and digesta passage in sheep and steers fed all forage diets, but has not been examined using dairy cows in early lactation. The purpose of this study was to determine effect of reducing FPS on production, …
-
Predictive equations for milk yield and dry matter intake and development of a maximum-profit ration formulation model
… on 19 separate experiments in which total feed intake and milk production was recorded. A total of 492 cows on these experiments provided 4135 Holstein and 704 Jersey 28-day records which contained information on feed intake, milk yield, butterfat content, ration composition, body weight, season …
-
Spatial Allocation of Forages and Its Impact on Grazing Behavior, Diet Selection and Dry Matter Intake of Beef Steers
… is thought to be a strategy to increase fiber intake before nightfall or as a response to higher carbohydrate levels in grass in the afternoon. In the present study, proportion of grazing time in alfalfa was higher (P = 0.02) in the afternoon (76.8 %) than in the morning (72.1 %). While fiber …
-
Effect of varying levels of neutral detergent fiber and total digestible nutrients on dry matter intake of dairy heifers
… Equations to predict DMI were developed using intake information from this and a previous study. Backward stepwise regression was utilized to generate a simplified model. Model selected was: DMI (kg/d) = -5.9781 + (2.2120E-05 * BWTSQ) - (5.5527 * GAIN) + (2.7837 * GAINSQ) + (0.4668 * NDF) + …
-
Estimating forage mass of tall fescue pastures and dry matter intake and digestibility of fescue forage by beef steers
… forage mass of tall fescue pastures, and dry matter intake and digestibility in beef steers under indoor and grazing conditions. Forage mass was estimated with the herbage cutting method (HCM) and three indirect methods; the pasture capacitance meter (PCM), the plate meter (PPM), and the …
-
Effect of sward height and concentrate supplementation on forage dry matter intake, digestibility and grazing time of spring-calving beef cows
To establish the effect of sward height (SH) and concentrate supplementation on performance of grazing cattle, twenty-four cross bred Angus beef cow-calves were randomly assigned to two SH treatments (4--8 or 8--11 cm) with three supplement levels: 6.24, 3.12 or 0 kg/d. The study was conducted in …
-
The Effect of Three Fescue Types and Lakota Prairie Grass on Copper Status, Dry Matter Intake, and Alkaloid Appearance of Beef Steers
… Q, and L pastures using the alkane technique. Dry matter intake of steers grazing E- was greater (P < 0.001) than Q, E+, and L and DMI of steers grazing Q and E+ were similar (P > 0.10) in 2004. In 2005, DMI did not differ (P = 0.23) among fescue types. These results suggest that decreased DMI …
-
Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle
… for barley and oat whole-crop forage on feed intake, ruminal fermentation and digestibility, and the impact forage allocation has on intake and ruminal fermentation. In the first 2 studies, whole-crop barley (Study 1; c.v. CDC Cowboy) and oat (Study 2; c.v. CDC Weaver) forage were harvested at …
-
Grouping and feeding policies for lactating dairy cows
… University of New Hampshire were used to analyze dry matter intake and milk production in Holstein dairy cows. Equations predicting 4% FCM and dry matter intake were derived from this data using ordinary least squares. Days in milk, available nutrients, calving date, and previous period 4% FCM …
-
Effect of dry period diets varying in energy density on health and performance of periparturient dairy cows: a study of dry matter intake, lactation performance, fertility, blood parameters and liver condition
… with different energy levels in the close-up dry period (3-0 weeks prepartum) on different production and health parameters were examined around parturition of 30 Icelandic cows and heifers in individual tie stalls. Dry matter intake (DMI) was registered, lactation performance, i.e. milk yield …
-
Use of polyhalite mineral as an acidogenic product in the diets of close-up non-lactating dairy cows
… an acidogenic product. We measured the urine pH, dry matter intake, milk yield, and calcium and magnesium concentration of urine and serum in pre-partum and non-lactating dairy cows consuming diets containing a low dose of polyhalite (200 g/cow/day), a high dose of polyhalite (400 g/cow/day), …
-
Seasonal differences in apparent digestibilities of fescue and orchardgrass/clover pastures by horses
An experiment was conducted to determine intake and apparent digestibilities of Kentucky 31 tall fescue (<i>Festuca arundinacea</i> schreb.) and orchardgrass/clover (<i>Dactylus glomerata</i> L./<i>Trifolium pratense</i> L.) pastures in different seasons of the year. Three digestion trials were …
-
Fermentation, utilization, and palatability of swine waste ensiled with various proportions of ground orchardgrass hay or ground corn grain
… destroyed. In a sheep metabolism trial, organic matter digestibility was similar in 40:60 and 60:40 swine waste~orchardgrass hay silages and in orchardgrass hay fed alone, but was higher (P<.05) in an orchardgrass hay plus soybean meal diet. Crude protein digestibility was higher (P<.05) in the …
-
Fishmeal substituted for soybean meal fed at two TDN levels for lactating dairy cows
… acid and neutral detergent fiber, and increased dry matter content. Nitrogen degradability was lower in the higher TDN rations and decreased with increasing fishmeal levels. Dry matter degradability tended to be similar for all diets. Milk and FCM production was similar for all diets. Milk fat …
Page 1 of 8