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Articles 20641 - 20670 of 21395
Full-Text Articles in Entire DC Network
Look After The Tail Enders, B R. Beetson
Look After The Tail Enders, B R. Beetson
Journal of the Department of Agriculture, Western Australia, Series 4
IN Department of Agriculture drought feeding trials last summer, shy feeders lost weight and died while the bigger sheep grew fat. When drafted off and fed separately the shy feeders ate their share and survived the summer.
Genetic Aspects Of Calving Ease, James S. Brinks
Genetic Aspects Of Calving Ease, James S. Brinks
Department of Animal Science: Faculty Publications
Several trends in cattle production and marketing are becoming evident. Leaner and perhaps heavier muscled slaughter cattle will be in demand through the chain from consumers back through retailers, packers, feeders and finally the producers. Emphasis on growth in the feedlot will continue. Thus, the feedlot and carcass characteristics desired point towards fairly large, heavier muscled cattle. At the producer level, increased emphasis is being placed on matching cow size, milk level, and overall biological type to available resources. Thus, the trend for maternal herds in the Great Plains point towards an adapted, probably moderate size, and milking cow that …
Road-Kill Census Of Mammals In Northeastern Arkansas, J.W. Ed Wortham, Earl L. Hanebrink
Road-Kill Census Of Mammals In Northeastern Arkansas, J.W. Ed Wortham, Earl L. Hanebrink
Journal of the Arkansas Academy of Science
No abstract provided.
Studies On The Nutritional Aspects Of Tubificid Worms, Thomas Nelson Seng
Studies On The Nutritional Aspects Of Tubificid Worms, Thomas Nelson Seng
Masters Theses
No abstract provided.
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …
Skull Key To Adult Minnesota Mammals, Carl H. Ernst
Skull Key To Adult Minnesota Mammals, Carl H. Ernst
Journal of the Minnesota Academy of Science
An artificial key to the skulls of adults of the mammals reported from Minnesota is presented for possible use not only by wildlife and professional biologists, but also by those lay persons interested in identifying skulls they might find in Minnesota.
Preliminary Study Of Zooplankton Over A Six Month Period On Lake Dardanelle, Tom N. Palko
Preliminary Study Of Zooplankton Over A Six Month Period On Lake Dardanelle, Tom N. Palko
Journal of the Arkansas Academy of Science
No abstract provided.
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Age And Growth Of The Blue Catfish, Ictalurus Furcatus, In The Arkansas River, D. Leroy Gray
Age And Growth Of The Blue Catfish, Ictalurus Furcatus, In The Arkansas River, D. Leroy Gray
Journal of the Arkansas Academy of Science
No abstract provided.
Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles
Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles
Journal of the Arkansas Academy of Science
Lost Creek is representative of deltonic streams of the St. Francis Basin possessing characteristics of being turbid. It has a low flow velocity except during the annual spring rains. Lost Creek meanders approximately 18 km. before receiving effluents and empties into Big Creek approximately 4 km. west of Jonesboro, Arkansas. Five collecting stations were studied in 1966 while six stations were sampled in 1970. Some fishes have been found to tolerate moderate amounts of domestic effluents and it is probable that the two species Lepomis cyanellus and Ictalurus melas, collected within the effluents, were more resistant than the other species …
Urea Or Grain Supplements For Stubble?, H E. Fels
Urea Or Grain Supplements For Stubble?, H E. Fels
Journal of the Department of Agriculture, Western Australia, Series 4
Three methods of supplementing sheep grazing stubble were compared at Merredin Research Station in 1970. The stubble used in the experiment was left after harvesting a nine-bushel crop of Gamenya wheat which was a weed-free second crop on new land. The land had never been sown to legumes.
Subalpine Cover Ecology Of Eutamias Amoenus, Eutamias Townsendii And Other Small Mammals In Huckleberry Park, Mount Rainier National Park, Don H. Meredith
Subalpine Cover Ecology Of Eutamias Amoenus, Eutamias Townsendii And Other Small Mammals In Huckleberry Park, Mount Rainier National Park, Don H. Meredith
All Master's Theses
Little work has been done on the ecology of alpine and subalpine small mammals. They are included in faunal surveys, but little is known of their habits. In the summer of 1969 this study was undertaken in subalpine Huckleberry Park, Mount Rainier National Park, to determine the species of small mammals in the area and some of their relationships with the environment and each other. The relationships between E. amoenus and E. townsendii were of special interest.
The Incidence And Intensity Of Haematozoa In The Common Crow (Corvus Brachyrhynchos) Of Western Washington, Ronald E. Scarvie
The Incidence And Intensity Of Haematozoa In The Common Crow (Corvus Brachyrhynchos) Of Western Washington, Ronald E. Scarvie
All Master's Theses
The purpose of this study was to determine the incidence and intensity of blood parasites in the common crow (Corvus brachyrhynchos). The following observations on the protozoan genera Haemoproteus, Leucocytozoon, Plasmodium and Trypanosoma with observations on the nematode group microfilaria, are based entirely on materials collected at Auburn, Washington during the spring of 1970.
Despite the numerous studies on prevalence of blood parasites in various birds, there have been few attempts to study the relative incidence and intensity of haematozoa in blood and tissue smears taken from the common crow. So far as the author has been able to ascertain, …
The Feasibility Of Avian Karyotypes In Taxonomy, Gerald Francis Shields
The Feasibility Of Avian Karyotypes In Taxonomy, Gerald Francis Shields
All Master's Theses
The purpose of this paper is twofold: first, to evaluate the usefulness of various karyotypic procedures using domesticated and passerine birds and second, to comment on the validity of the application of karyotypic data to taxonomy.
Super Spreader Distributes Snail Baits, G D. Rimes, W. M. O'Donnell
Super Spreader Distributes Snail Baits, G D. Rimes, W. M. O'Donnell
Journal of the Department of Agriculture, Western Australia, Series 4
THE problem of distributing snail bait on broad acres has been overcome by simple modifications to a conventional super spreader.
Experiments With Urea On Private Farms, R J. Parkin, G. Palmer, A. Haagensen, L. D. White, R. J. Suiter, H. E. Fels
Experiments With Urea On Private Farms, R J. Parkin, G. Palmer, A. Haagensen, L. D. White, R. J. Suiter, H. E. Fels
Journal of the Department of Agriculture, Western Australia, Series 4
Many District Advisers have carried out trials on private farms to test the response to a variety of types of supplementary feeds. This report gives brief details of five such experiments carried out with urea supplements over the last five years. Table 1 summarises the details and results of these trials.
Urea Mixture Formulations, H E. Fels
Urea Mixture Formulations, H E. Fels
Journal of the Department of Agriculture, Western Australia, Series 4
This experiment was done once the experiment above (Urea or Grain Supplements for Stubble) had shown definite but uneconomic responses to a particular mixture of urea, molasses and minerals. The aim was to find whether the response depended on the content of various portions of the mixture, and whether the response to the "shotgun" lick could be explained by the presence of salt, sulphate or cobalt.
Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways
Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Provides an overview of the field of chiropteran systematics in a way that will introduce the non-chiropterologist to the subject. By way of example, we have alluded to several aspects of taxonomic research at different levels in the hierarchy. Recourse to the publications cited at the appropriate places in the text will amplify our remarks and provide a solid background in the current work of the discipline.
Basically, taxonomic characters are where the taxonomist finds them; some, but not all, will prove useful also in elucidating relationships and evolutionary descent of taxa. Much remains to be done in these areas, …
Reproductive Biology Of Thais Emarginata (Deshayes, 1839) And Thais Canaliculata (Dulcos, 1832), Roy Seamands Houston
Reproductive Biology Of Thais Emarginata (Deshayes, 1839) And Thais Canaliculata (Dulcos, 1832), Roy Seamands Houston
University of the Pacific Theses and Dissertations
Thais emarginata (Deshayes, 1839) and Thais canaliculata (Dulcos, 1832), are two common Pacific coast gastropods (Family: Muricidae). T. emarginata is found in semi-protected rocky areas from Alaska to Baja California, while T. canaliaulata occurs in quiet bays from Alaska to Monterey Bay, California (Ricketts and Calvin, 1966). Both species occur on rocks and jetties where they can be seen feeding upon barnacles and young mussels. Despite the abundance of these species their reproductive biology has not been examined.
In the present study, the following aspects of the reproductive biology of T. emarginata and T. canalieulata are presented: Relationship of gonadal …
The Comparative Morphology Of The Female Gonads Of Two Members Of The Nematode Order Tylenchida, Owen G. Coker
The Comparative Morphology Of The Female Gonads Of Two Members Of The Nematode Order Tylenchida, Owen G. Coker
Masters Theses
No abstract provided.
A Histochemical Study Of The Ovary Of The Milkweed Bug Oncopeltus Fasciatus (Dallas), With Special Reference To The "Intermediate" Cell, Khian Kioe Liem
A Histochemical Study Of The Ovary Of The Milkweed Bug Oncopeltus Fasciatus (Dallas), With Special Reference To The "Intermediate" Cell, Khian Kioe Liem
Masters Theses
No abstract provided.
Fisheries Report No Iv (6) - Report On The Current Status Of Crocodiles In Western Australia, H. Robert Bustard Dr
Fisheries Report No Iv (6) - Report On The Current Status Of Crocodiles In Western Australia, H. Robert Bustard Dr
Fisheries Research Reports
The aim of the survey was fivefold,
(1) to determine the present abundance and composition of saltwater crocodile populations in Western Australia,
(2) to comment on the status of the freshwater crocodile in Western Australia following 7 years of total protection,
(3) to locate study area(s) for detailed work on crocodile biology,
(4) to investigate the feelings of people on the spot (especially shooters or ex-shooters) towards crocodile conservation, and
(5) to investigate law enforcement problems relating to crocodiles
Kentucky Warbler (Vol. 45, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 45, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Front Matter, Vol. 10 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 10 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Nesting Ecology Of Raptorial Birds In Central Utah, Joseph R. Murphy, Franz J. Camenzind, Dwight G. Smith, J. Bradford Weston
Nesting Ecology Of Raptorial Birds In Central Utah, Joseph R. Murphy, Franz J. Camenzind, Dwight G. Smith, J. Bradford Weston
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Variation Within Herds Under Different Housing Systems, G. R. Wiggans, L. Dale Van Vleck
Variation Within Herds Under Different Housing Systems, G. R. Wiggans, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
New York Holstein herds (1,152) including 75,875 cows were classified by housing system (stanchions, free stalls, and other combinations). Records initiated in these herds from 1964 to 1968 were used to determine the degree to which housing type might affect variance of milk production records in herds with 45 or more cows.
The within-herd variances by lactation for each housing system in each year-season were examined by Bartlett's test for nonhomogeneity among housing systems. Records in the stanchion systems were less variable than those in free-stall systems. This difference was not large enough to require adjustment for type of housing …
Kentucky Warbler (Vol. 45, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 45, No. 3), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Populations Of Some Mammals Of Oak Forests In Southwestern Michigan, James R. Hodgson
Populations Of Some Mammals Of Oak Forests In Southwestern Michigan, James R. Hodgson
Masters Theses
No abstract provided.
Age And Growth Of White Bass, Roccus Chrysops (Rafinesque), In Mud Lake, Near Provo, Utah, Frederick Edward Trapnell
Age And Growth Of White Bass, Roccus Chrysops (Rafinesque), In Mud Lake, Near Provo, Utah, Frederick Edward Trapnell
Theses and Dissertations
This study was conducted to obtain information that could be used in the management of the Utah and Mud lake white bass fishery. It also provides data for evaluating the effect of the loss of Mud Lake on the white bass utilizing it. Determination of age, growth rate, and coefficient of condition of the Mud lake white bass were objectives in this study. The occurrence of organisms in the digestive tracts of 64 white bass as well as the movement of white bass into and out of Mud Lake were also studied. Hoop nets, a continuous mesh gill net, and …