Agriculture Commons^™

Distribution Of Sexual Activities Within Estrus Of Dairy Cattle, Donna Durbin

Masters Theses & Specialist Projects

Previous studies of dairy cattle have indicated that heifers and cows in hot, cold and moderate weather had different patterns of sexual activities. The purpose of this study was to compare distribution of sexual activities within estrus of dairy cattle. Three groups of lactating cows in hot, cold and moderate weather and a group of heifers in cold weather were observed. Estrus for each individual was divided into 12 equal periods. Sexual activities for 3 and 6 hours before and after estrus were also observed. The numbers of mounts and distribution of total sexual activities was analyzed. Mounts received per …

1991 Nebraska Cattlemen Bull Selection Clinics

University of Nebraska Historical Extension: Bulletin

Program

Welcome and Introduction

Use of Expected Progeny Differences (EPD's) in Bull Selection .

... at Columbus: by Steve McGill, Director Shorthorn Performance Records, American Shorthorn Association, Omaha, NE

... at North Platte, Chadron and Gering: by Keith V ander Velde, Director Beef Programs, American Breeders Service, De Forest, WI

... at Fairbury, Sutton, Verdigre: by Roy Wallace, Director Beef Programs, Select Sires, Plain City, OH

Demonstration of EPD use in Bull Selection: - Dr. Jim Gosey, NU Extension Beef Specialist, Nebraska Cattlemen, Purebred Council Representative; Featured Speaker--McGill, Vander Velde or Wallace

Discussion of Breeding Soundness Examination (BSE) of Bulls: …

Chemical Repellency In Birds: Relationship Between Chemical Structure And Avoidance Response, Larry Clark, Pankaj Shah, Russell Mason

Larry Clark

We examined how molecular structure of24 anthranilate and benzoic acid deriva­ tives correlated with drinking behavior in European starlings Sturnus vulgaris.The effectiveness of bird repellents was &?SOciated with basicity, the presence of an electron onating group in resonance with an electron-withdrawing carboxylic group on a phenyl ring, and a heterocyclic ring in the same pi cloud plane as the phenyl ring. Of the benzoic acid derivatives tested in this study, methyl, ethyl, dimethyl, and linalylanthranilate as well as anthranilic acid and 4-ketobenztriazine were repellent to birds. Water consumption was significantly reduced relative to control levels at concentrations as low as …

The Productivity Of Western Australia's Wheat And Sheep Industry, Tim Coelli, Ross Kingwell

Journal of the Department of Agriculture, Western Australia, Series 4

A popular economic lament is that Australian industries and workers are not as productive as they should be. Politicians and economic commentators preach the need for productivity improvement and workplace reform, and criticise inefficiency and lack of endeavour. Can such criticism be fairly levelled at farmers and agricultural scientists? What is productivity and how is it measured? What is the productivity of Western Australia's main agricultural industry — wheat and sheep farming? This article addresses these questions and shows that our wheat-sheep industry can be moderately proud of its productivity record

1991 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

No abstract provided.