Download or read book The Effects of Alfalfa Hay Fiber and Vitamin B12 Levels in Body Fluids on Milk Fat Production in High producing Dairy Cows written by Eric George Dudley and published by . This book was released on 1979 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented in this thesis was designed to evaluate the effects of feeding alfalfa hays from the Klamath Basin of Oregon in practical dairy rations on milk fat production in high-producing Holstein cows. Thirty-two second lactation or older animals estimated to be capable of producing at least 70 lbs of milk daily were utilized in a 4 X 4 latin square experiment with eight replications. Four rations based upon four different lots of hay, ranging from 15.2 to 22.0% crude protein (CP), from 29.9 to 35.1% acid detergent fiber (ADF) and from 109 to 132 in Relative Feed Value, were fed during four periods, each lasting about 28 days. Rations were formulated to be comparable in caloric and nitrogen content, and all consisted (as a percent of ration dry matter) of 50% concentrate, 30% chopped alfalfa and 20% corn silage, fed as a mixed, complete ration. A digestibility study was also carried out involving four steers fed the four alfalfa hays only. The digestibility trial showed that there were no significant differences among the four alfalfa hays in feed intake, % digestible dry matter, % digestible ADF and % digestible CP. In the production trial, no differences were seen in feed intake or persistency, and body weight changes were significantly different only for periods. Both daily 4% fat-corrected milk (FCM) and milk fat percentage were observed to have highly significant differences for all sources of variation except treatments. Treatment means for rations 1 through 4 for 4% FCM were 48.88, 48.02, 48.38 and 48.24 lbs, respectively, and those for percent milk fat were 3.13, 3.12, 3.05 and 3.01, respectively. Differences in other sources of variation for these two measurements were attributed to variation among cows and stage of lactation effects. Important changes were noted in the relative proportions of volatile fatty acids in the rumen. While there were no significant changes in rumen acetate concentration, highly significant differences in propionate content were seen for all sources of variation. Treatment means for rations 1 to 4 were 18.14, 17.56, 19.44 and 23.03 pmoles /ml of rumen fluid. This response was reflected also in highly significant differences in ruminal acetate:propionate (A:P) ratios. Means here for rations 1 through It were 2.82, 3.00, 2.36 and 2.23, respectively. Correlation coefficients were determined for A:P ratios and several hay and ration characteristics, and only that with hay % NDF was significant. It was concluded that changes in rumen fermentation typical of milk fat depression occurred which were not severe enough to actually reduce butterfat levels. The literature indicates that there may be a relationship between milk fat synthesis and tissue vitamin B12 status, i.e., that B12- deficient animals will secrete milk with reduced fat percentage. In this experiment, serum vitamin B12 levels did not respond significantly to treatments, nor did fat percentage, the correlation between them was very low, and there was no indication of vitamin B12 deficiency among experimental animals. Our results, therefore, are interpreted as not being in conflict with the hypothesized relationship.

Download or read book Optimizing the Nutritional Utilization of Different Maturities of Alfalfa by Balancing the NDF Content of Rations for High Producing Dairy Cows written by Robert M. Kaiser and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Supplementing Fat to Diets Containing Immature Alfalfa in Varying Forage to Concentrate Ratios on Nutrient Utilization and Lactation Performance in Dairy Cattle written by Michael John Jerred and published by . This book was released on 1989 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alfalfa Silage written by Ollie Ezekiel Reed and published by . This book was released on 1917 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Designing Foods written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.

Download or read book Alfalfa Forage for Milch Cows written by and published by . This book was released on 1894 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book O S U Theses and Dissertations 1978 1982 written by Oregon State University and published by . This book was released on 1983 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Maturity and Level of Intake of Alfalfa Hay on Digestibility by Dairy Cattle written by Linda A. Watson and published by . This book was released on 1986 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Elimination of Alfalfa Hay from Diets of High producing Dairy Cows written by Tyler Colburn and published by . This book was released on 2008 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Fiber Quality Fiber Level and Level of Intake on the Utilization of Forages by Ruminants written by Gerardo Llamas-Lamas and published by . This book was released on 1988 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Dietary Fiber and Body Condition on the Milk Production Dry Matter Intake and Blood Metabolites of Peripartum Dairy Cows written by Robert Arnold Patton and published by . This book was released on 1989 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Stage of Maturity and Method of Preservation of Alfalfa on Milk Production and Fiber Utilization by Lactating Dairy Cows written by William Finley Nelson and published by . This book was released on 1990 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Responses of Lactating Cows to Dietary Fiber from Alfalfa Or Cereal Byproducts written by Marcos Neves Pereira and published by . This book was released on 1997 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Si Lo Fame on the Preservation of Ensiled Alfalfa grass Silage in the Diet of High Producing Dairy Cows written by and published by . This book was released on 1982 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Buffer Supplementation to High grain Diets Fed Lactating Dairy Cows written by Luis Carlos Solorzano and published by . This book was released on 1988 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparison of First Second and Third Crop Alfalfa Hay for Milk Production written by William Ernest Carroll and published by . This book was released on 1913 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plasma Progesterone Concentrations in Normally Cycling Heifers Treated with CIDR Devices written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: