Download or read book A Comparison of in Vivo and in Vitro Techniques for the Evaluation of Varying Roughage concentrate Rations written by Ramon Hollis Klett and published by . This book was released on 1966 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to compare the total collection (in vivo), nylon bag, and in vitro digestibility techniques under standardized conditions. Twin steers were used simultaneously to measure the digestibility of five rations consisting of the following ratios of alfalfa hay to steamed roller barley: 4:0 (I), 3:1 (II), 2:2 (III), 1:3 (IV), and 0:4 (V). One trial was completed in the in vivo study using a six day collection period, whereas two trials were run for each of the other two techniques. Fermentation periods of 24, 48, and 72 hours or 12 and 24 hours were used for the nylon bag and in vitro studies, respectively. In vivo energy, crude protein, ether extract, and dry matter digestibility and TDN increased as the roughage: concentrate decreased from 4:0 to 0:4. The inverse relationship was noted for cellulose and crude fiber digestibility. The variability in dry matter digestibility, as measured by standard deviations and coefficients of variation, was highest in the nylon bag and lowest in the in vivo procedure. The difference between trials, using dry matter digestibility as the criterion, was generally non-significant for both the nylon bag and in vitro techniques. It was concluded that repeatability between trials is not a factor when using these techniques if sufficient replications are used. Differences between animals within rations were greater than expected; however, when the data were pooled across all rations, the steers were not significantly different. The rate and variability of nylon bag and in vitro dry matter and cellulose digestion was greatest in the first digestion period in each of the five rations. However, as the rations included concentrates, the rate of nylon bag dry matter and cellulose digestion decreased in the same period. A comparison of the three techniques, using the mean dry matter and cellulose digestion coefficients, showed the in vivo dry matter digestion to compare closely with the 48 hour nylon bag and 24 hour in vitro digestion. The nylon bag and in vitro cellulose digestibility underestimated the in vivo digestion of cellulose. The nylon bag dry matter digestibility at 48 and 72 hour fermentation periods and in vitro dry matter digestibility at 12 and 24 hours was significantly correlated with the in vivo digestibility of ether extract, energy, dry matter, cellulose, and crude fiber. Similar correlations were obtained when nylon bag and in vitro cellulose digestion was correlated with in vivo digestibility of the chemical components. Correlation coefficients between the nylon bag and in vitro techniques, using dry matter and cellulose digestion as criteria, showed a close relationship at the longer digestion periods. Regression equations developed from these correlations showed no significant (P
Download or read book Dissertation Abstracts written by and published by . This book was released on 1966 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1970 with total page 1776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Health and environmental sciences written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Requirements of Beef Cattle written by Subcommittee on Beef Cattle Nutrition and published by National Academies Press. This book was released on 2000-05-16 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: As members of the public becomes more concious of the food they consume and its content, higher standards are expected in the preparation of such food. The updated seventh edition of Nutrient Requirements of Beef Cattle explores the impact of cattle's biological, production, and environmental diversities, as well as variations on nutrient utilization and requirements. More enhanced than previous editions, this edition expands on the descriptions of cattle and their nutritional requirements taking management and environmental conditions into consideration. The book clearly communicates the current state of beef cattle nutrient requirements and animal variation by visually presenting related data via computer-generated models. Nutrient Requirements of Beef Cattle expounds on the effects of beef cattle body condition on the state of compensatory growth, takes an in-depth look at the variations in cattle type, and documents the important effects of the environment and stress on food intake. This volume also uses new data on the development of a fetus during pregnancy to prescribe nutrient requirements of gestating cattle more precisely. By focusing on factors such as product quality and environmental awareness, Nutrient Requirements of Beef Cattle presents standards and advisements for acceptable nutrients in a complete and conventional manner that promotes a more practical understanding and application.
Download or read book Rumen Microbial Metabolism and Ruminant Digestion written by J. P. Jouany and published by Editions Quae. This book was released on 1991 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together the data of lastest international research and was conceived as the result of a summer school held at the INRA Centre of Clermont-Ferrand/Theix from 24 September to 4 Octobre 1990. The subject is the rumen as a fermentor and the means by which rumen functioning can be optimized for the maximum benefit ot the ruminant.
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Vivo and in Vitro Measures as Predictors of the Nutritive Value of Alfalfa and Bromegrass Hays written by Fernando Lema-Mejia and published by . This book was released on 1972 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of Nutrition written by and published by . This book was released on 1964 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 7-42 include the Proceedings of the annual meeting of the American Institute of Nutrition, 1st-9th, 11th-14th, 1934-1942, 1947-1950 (1st-8th, 1934-1941, issued as supplements to the journal).
Download or read book Annual Report of the Secretary for Agricultural Technical Services for the Period written by South Africa. Department of Agricultural Technical Services and published by . This book was released on 1977 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1992 with total page 1444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Indian Journal of Veterinary Science and Animal Husbandry written by and published by . This book was released on 1962 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report written by and published by . This book was released on 1965 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book White tailed Deer in the Southern Forest Habitat written by and published by . This book was released on 1969 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Author index written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
