Download or read book A Study of Factors Influencing Weaning Weights of Beef Calves written by Joe Allen Minyard and published by . This book was released on 1959 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Some of the Factors Influencing the Birth and Weaning Weights of Beef Calves written by Keith Edward Gregory and published by . This book was released on 1949 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing Weaning Weight Daily Gain and Grade of West Virginia Beef Calves written by Edward William Pell and published by . This book was released on 1973 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactions Between Certain Environmental Factors Influencing Weaning Weight in Beef Calves written by Lawrence Wade Grimes and published by . This book was released on 1974 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic and Environmental Factors Influencing the Weaning Weight of Beef Calves written by Missouri-Columbia. Agricultural Experiment Station and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting Calf Crop written by Michael J. Fields and published by CRC Press. This book was released on 1993-11-23 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Factors Affecting Calf Crop summarizes the latest information available from leading cattle physiologists and geneticists regarding factors known to influence the production of live calves at weaning. You get practical information on management techniques for improving reproduction efficiency in the herd. You'll also learn about the functioning of the reproductive system and how this may affect reproductive processes in the cow herd. Managers will benefit from a clearer understanding of the factors known to limit efficient reproduction, while veterinarians and other professionals who advise cattlemen will appreciate the substantial reference material and color photographs for defining cow condition scores. Color photographs are also used to illustrate the discussions of testicular thermographies and their applications. Other chapters in the book cover developments in improving reproductive performance of the replacement heifer, the brood cow, and the bull. Topics on reproduction include physiology/endocrinology, the use of growth promotants, genetics and physiological and economic considerations in selecting the age to breed heifers, heritability of fertility, length of the breeding season, prepartum and postpartum nutrition, nursing by the calf, cloning of embryos, and much more.

Download or read book Some Factors Influencing Days Open and Weaning Weights of Beef Cattle written by Joshua Franklin Pirkle and published by . This book was released on 1976 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic and Environmental Factors Influencing the Weaning Weight of Beef Calves written by Homer Bronstetter Sewell and published by . This book was released on 1963 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biostatistical Analysis of Factors Influencing Lactation Performance of Range Cows and Weaning Weights of Their Calves microform written by Sarah Louise Butson and published by National Library of Canada. This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was carried out to examine trends in lactation performance and factors influencing milk traits and calf weaning weight among range beef cattle. Cows representing four beef and dairy-beef breeds and lines from the University of Alberta beef herds ranging in age from 2 to 10 years of age were used in the study. June and September measurements of milk and constituent percentages were taken on 206 and 242 cows in 1976 and 1977 respectively. Age and breed of dam, and age and sex of calf were recorded. Other variables examined were cow weight changes during gestation and lactation and birthweights, weaning weights and preweaning ADG of their calves. Milk variables and calf weaning weights were the traits studied. In Chapter I the lactation performance of the four breed groups of dams was examined. Results indicated that crossbred cows with dairy breed ancestry yielded more milk and were more persistent than a purebred traditional beef breed. Trends between breeds for constituent percentage production were less noticeable although the dairy crossbreds tended to produce less butterfat% than the purebreds. In Chapter II factors influencing milk and constituent yields were investigated using the multiple regression technique in Chapter II. Stepwise regressions involving age and breed of dam accounted for between 34.0% and 44.0% of the variance in any of the milk or constituent yields. Full and restricted regression models allowed the introduction of independent variables after adjusting for age and breed of dam effects. Calf preweaning ADG showed a high association with milk yield variables. Other factors such as calf birthweight and cow weight changes however did not account for a significant proportion of the variance in any one milk or constituent yield variable. Because associations and correlations between milk yield and calf ADG were significant but only moderately high, all factors influencing weaning weights of range calves were examined in Chapter III. Regression analysis indicated that age and breed of dam effects accounted for an average of 47% of the variance in calf weaning weight. When age and breed of dam were not considered, milk or constituent yields accounted for approximately 40% of weaning weight variance. However, milk variables still accounted for up to 10% of the variance after accounting for the effects of age and breed of dam. Calf birthweight and cow weight changes had minor effects on calf weaning weight. As a significant proportion of the variance in weaning weight was accounted for by milk variables, which in turn are largely a reflection of the breed of dam, it was concluded that selection for increased lactation performance and the introduction of dairy breeds into the breeding program of a beef herd can effect meaningful increases the weights of calves weaned.

Download or read book Factors which Influence Weaning Weight of Beef Calves written by Octavio Oscar Frigerio and published by . This book was released on 1961 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Factors Affecting Weaning Weights and Weaning Scores in Beef Calves written by James S. Brinks and published by . This book was released on 1957 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cow Weights and Other Factors Affecting Calf Weaning Weight written by Charan Chantalakhana and published by . This book was released on 1968 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing Weaning Performance of Beef Calves on the Plateau Area of Tennessee written by Merrill D. Austin and published by . This book was released on 1968 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Influencing Weaning Weights of Angus and Hereford Cattle in Mississippi written by James Horace Meade and published by . This book was released on 1959 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principal Factors Affecting Weaning Weights in Beef Cattle written by John A. Richter and published by . This book was released on 1964 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting Weaning Weights of Beef Cattle written by James Harold Anderson and published by . This book was released on 1977 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Breed and Certain Environmental Factors on Weaning Weight and Grade of Georgia Beef Calves written by Robert Foster Rhodes and published by . This book was released on 1970 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: