منابع مشابه
Using multiple objective programming in a dairy cow breeding program.
Multiple-objective programming was used to examine the effects various objectives had on the optimal portfolio of sires chosen for a given breeding problem in a Jersey cow dairy herd. It was assumed that the dairy producer had the following three objectives in the breeding decision: to maximize Net Merit, to minimize inbreeding, and to minimize total expenditure on semen. Integer programming mo...
متن کاملDevelopment of a national genetic evaluation for cow fertility.
A national fertility evaluation was developed based on pregnancy rate, which measures the percentage of nonpregnant cows becoming pregnant within each 21-d opportunity period. Data for evaluation are days open, which are calculated as date pregnant minus previous calving date. Date pregnant is determined from last reported breeding or from subsequent calving minus expected gestation length. Suc...
متن کاملEvaluation of Crossbred Calf and Cow Types; Subjective Traits
Data in this experiment consisted of birth weight, calving score, thickness and grade records of 600 crossbred calves. Angus, Brangus, and Gelbvieh sires were mated to purebred Hereford cows. Yearling and 2-yr-old Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters then were bred to Polled Hereford bulls (Data Set 2). Later-parity Angus-Hereford, Brangus-Hereford, and Gelbvieh-Her...
متن کاملHuman Mouse Cow Stickleback Medaka Human Mouse Cow Stickleback Medaka Human Mouse Cow Stickleback Medaka Human Mouse Cow Stickleback Medaka
clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission to republish or repurpose articles or portions of articles ): August 18, 2011 www.sciencemag.org (this infomation is current as of The following resources related to this article are avail...
متن کاملProgramming Techniques for Partial Evaluation ∗
These lecture notes describe how to write generating extensions, i.e., dedicated program specializers. The focus is on compositional programs and their associated fold functions. Each generating extension is expressed as an instance of this fold function. A number of examples are considered and pointers to related work are provided. ∗Lecture notes for Marktoberdorf’99, extended version. †Basic ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1976
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(76)84410-4