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Book Improving Your Dairy Herd Through the National Cooperative Dairy Herd Improvement Program

Download or read book Improving Your Dairy Herd Through the National Cooperative Dairy Herd Improvement Program written by United States. Agricultural Research Service. Animal Husbandry Research Division and published by . This book was released on 1967 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Economic Evaluation of Production Reproduction Mastitis and Herd Life in Large California Dairy Herds for Culling Decision Support

Download or read book Economic Evaluation of Production Reproduction Mastitis and Herd Life in Large California Dairy Herds for Culling Decision Support written by Terry Wayne Lehenbauer and published by . This book was released on 1995 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book SAS User s Guide

Download or read book SAS User s Guide written by SAS Institute and published by . This book was released on 1979 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manual for users of the statistical analysis system (sas), presenting computer-based statistical methodology for all-purpose applications in data analysis - details statistical computing procedures and computer programmes for file handling. Report writing, information retrieval, etc. Flow charts and illustrations.

Book Advances in Breeding of Dairy Cattle

Download or read book Advances in Breeding of Dairy Cattle written by Julius Van der Werf and published by . This book was released on 2019 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Official Dairy Herd Improvement Rules

Download or read book Official Dairy Herd Improvement Rules written by and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dairy Herd Improvement Records and Their Use

Download or read book Dairy Herd Improvement Records and Their Use written by Neil C. Quesenberry and published by . This book was released on 1983 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dairy Herd Improvement Letter

Download or read book Dairy Herd Improvement Letter written by and published by . This book was released on 1978 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dairy Herd Improvement Letter Vol 53 Classic Reprint

Download or read book Dairy Herd Improvement Letter Vol 53 Classic Reprint written by U. S. Agricultural Research Service and published by Forgotten Books. This book was released on 2018-01-09 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Dairy Herd Improvement Letter, Vol. 53 Table 2 shows errors and conflicts noted in 1976 rather than the number of records in error. As many as four errors or conflicts or both may be coded for a single record. Table 2 shows that missing identification numbers for sires of grade cows caused rejection of records. The next most frequent cause of rejection - was that the cow number was all zeros. Next, with a loss of records, was conflicting or questionable birth date. The records rejected during the main edit are returned to the appropriate processing center for correction. Increased care in identifying (including the reporting of sire and dam numbers) and reporting all animals in each herd would greatly increase the number of records used for bull and cow evaluation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Optimum Dairy Cow Replacement Policies to Maximize Income Over Feed Cost

Download or read book Optimum Dairy Cow Replacement Policies to Maximize Income Over Feed Cost written by Richard Walker Rundell and published by . This book was released on 1967 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation of a dairy herd over a period of 15 years was used to examine replacement strategies among six operationally practical systems of culling cows which whould maximize income over feed costs. The strategies or criteria used to remove the lower ranking cows to a relatively constant herd size were: (1) Mature Equivalent (M.E.) milk production, (2) M.E. gross milk income, (3) actual milk production, (4) actual gross income, (5) income over feed cost, and (6) present value of expected gross income of cow and her subsequent replacements. Two each of prices of milk, fat differential, feed, and operational costs totaled 2 4 x 6 x 2 replications per trial or 192 replications. The following were treated as stochastic variables: (a) variation in milk production and milkfat percentage between cows and between lactations of the same cow, (b) chance of a calf being a heifer or bull, (c) chance of involuntary death or removal of cows and youngstock, and (d) chance of month of the year of involuntary removals. The mean and variance of the base herd approximated the average Michigan DHIA Holstein population in 1966. The sire value, approximating the best bulls used in A.I. was identical for any given year through all strategies and replications, but improved over time at the rate of 130 1b milk per year. Culls or cows removed because of low in each respective strategy were removed at the most profitable point to cull in their respective lactations by equating the milk income of the marginal month with the sun of the month's feed costs and monthly operational charges. Practical use of this simple method of determining when to cull cows within a lactation was demonstrated. A complete factorial design to analyze the generates data showed no significant differences between strategies under alternative combinations of prices in average income including salvage over feed cost per cow discounted to the present. This income was affected by the level of milk price (P

Book Mastitis Control in Dairy Herds

Download or read book Mastitis Control in Dairy Herds written by Roger William Blowey and published by CABI. This book was released on 2010 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of the book, containing 16 chapters which focus on prevention and control of mastitis as well as on the different factors that lead to mastitis resulting in poor milk quality. The book contains two appendices, the first contains a liner line chart and the second contains parlour audit. An index is also provided.

Book The Dairy Herd Improvement Association Program

Download or read book The Dairy Herd Improvement Association Program written by James Frank Kendrick and published by . This book was released on 1953 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nearly 50 years ago a few progressive dairy farmers in Michigan organized the first cow-testing association in the United States. They wanted to improve the profitableness of their herds. They hired a tester to weigh and test the milk of each cow and keep a record of her food cost and income. They wanted that information so the could cull the low producers from their herds and feed the rest more economically. In the first 4 years of their pioneer effort these Michigan dairy farmers doubled the average profit per sow. since then thousands of other dairy farmers have followed their example with equally striking results. The cow-testing movement grew and eventually expanded into the present-day dairy-herd-improvement-association program. Members of these associations now use their records not only to test the cows but to prove the bulls. The improvement they have brought about in their herds is one of the outstanding 'success' stories in agriculture. No herd is so good that it cannot be made better by effective culling, good feeding, and the use of production-tested breeding stock. Breeding records and records of production, feed cost, and income are essential for carrying on such an improvement program. Membership in a dairy-herd improvement association is one of the best and most economical ways for any dairy farmer to obtain the necessary records."--Page ii.