Author : United States Department Of Agriculture
Publisher : Forgotten Books
Page : 26 pages
File Size : 49,5 Mb
Release : 2018-01-12
Category : Business & Economics
ISBN : 0428946941
Dairy Herd Improvement Letter, October 1984, Vol. 60 by United States Department Of Agriculture Pdf
Excerpt from Dairy Herd Improvement Letter, October 1984, Vol. 60: Changes in Genetic Evaluation Procedures for January 1984; Counts of 305-Day Lactation Records Excluded From Genetic Evaluations for 1983; State and National Standardized Lactation Averages by Breed for Cows on Official Test, Calving in 1982 Among official records, percent were unusable because of termination code 9, down from percent for 1982. (termination code 9 indicates that a record should not be used for genetic evaluations because production information is not reliable or the record did not conform to Official Dairy Herd Improvement Rules.) Approximately 40 percent of official records had missing sire identification, which was the primary reason for exclusion, down from approximately 42 percent in 1982. Only percent of official records were excluded because of errors, the same as for 1982. The number excluded because of errors varied considerably among States. Missing birth dates and missing animal identification were the primary causes of errors for States with large numbers of records with errors. About percent of official records were excluded because of conflicts, down from percent for 1982. If a record was not used in computing genetic evaluations for a reason other than conflict, such as missing sire identification, only that record was excluded. However, when a record was compared with other records for the same cow and a conflict, such as differing birth date or parent identification, was detected, all records for that cow were excluded, including incoming records and all records already in the Animal Improvement Programs Laboratory files. 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.
