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Articles 34171 - 34200 of 36498

Full-Text Articles in Animal Sciences

Sexual Dimorphism In The Western Blacknose Dace, Rhinichthys Atratulus Meleagris, Gary L. Phillips Jan 1967

Sexual Dimorphism In The Western Blacknose Dace, Rhinichthys Atratulus Meleagris, Gary L. Phillips

Journal of the Minnesota Academy of Science

Breeding activities and sexual dimorphism of the minnow Rhinichthys atratulus meleagris were studied in the headwaters of the Mississippi River at Minnesota's Itasca Stole Pork. The following characteristics were measured in 25 specimens of each sex: Total length, standard length, length of pectoral fins, length of pelvic fins, height of anal fin, length of caudal fin, fork length of caudal fin, length of depressed dorsal fin, and depth of caudal peduncle. The anal fin differed most significantly between the sexes, being long and keeled in females and comparatively truncated in males. Mating behavior was also observed. Results suggest that differences …


A Study Of The Communities Of Aquatic Macro-Invertebrates Of The Merging Of The Mississippi And Chippewa Rivers, Using A Biplate Substrate Sampler, Robert R. Elbert, Clarence D. Mcnabb Jan 1967

A Study Of The Communities Of Aquatic Macro-Invertebrates Of The Merging Of The Mississippi And Chippewa Rivers, Using A Biplate Substrate Sampler, Robert R. Elbert, Clarence D. Mcnabb

Journal of the Minnesota Academy of Science

Using a biplate substrate sampler, aquatic macro-invertebrates were collected during the fall, winter and spring seasons at the confluence of the Mississippi and Chippewa Rivers along the Minnesota-Wisconsin border. The substrate sampler proved very desirable in pointing out extreme community variations which existed between the two rivers. It was found that the members of a downstream community were a blend of the communities present in upstream tributaries. However, as compared with upstream communities, a shift in dominant organisms occurred. Striking seasonal changes appeared in the invertebrate populations as well as the environment of the rivers. All sampling revealed "clean water" …


Metabolic Changes Induced In Rats By Feeding Different Levels Of Galactose With Two Levels Of Corn Oil, Carolyn Qualls Sharp Jan 1967

Metabolic Changes Induced In Rats By Feeding Different Levels Of Galactose With Two Levels Of Corn Oil, Carolyn Qualls Sharp

Journal of the Arkansas Academy of Science

No abstract provided.


Effects Of Hydroxyurea On Cultured Somatic Cells Of The Chinese Hamster, Cricetulus Griseus, Charlotte Neill, William C. Guest Jan 1967

Effects Of Hydroxyurea On Cultured Somatic Cells Of The Chinese Hamster, Cricetulus Griseus, Charlotte Neill, William C. Guest

Journal of the Arkansas Academy of Science

No abstract provided.


Controlled Environment Broiler Houses In Western Australia, D F. Hessels Jan 1967

Controlled Environment Broiler Houses In Western Australia, D F. Hessels

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

The three main features which contribute to the better returns from controlled environment broiler housing are higher density, better conversion and a reduction in labour.

The higher initial cost of housing and higher running costs are more than covered by these three advantages.


A Measure Of Clover Infertility In Ewes, N Davenport Jan 1967

A Measure Of Clover Infertility In Ewes, N Davenport

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

SERIOUS impairment of the breeding ability of ewes grazed for prolonged periods on growing pastures containing dominant subterranean clover has been experienced in Western Australia for many years.

The first widespread recognition of the problem coincided with the upsurge of improved pasture establishment based on the Dwalganup variety of subterranean clover in the higher rainfall sections of the wheatbelt and adjacent sheep raising areas to the west and south.


Consumption And Digestion Of Dry Cupped Clover, E T. Bailey Jan 1967

Consumption And Digestion Of Dry Cupped Clover, E T. Bailey

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

FARMERS often ask if sheep eat the dry seed heads of cupped clover (Trifolium cherleri) and, if so, how much of the seed is digested.


Pig Castration, F C. Wilkinson Jan 1967

Pig Castration, F C. Wilkinson

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

Castration - a necessary task made easier if done early. Clear instructions with pictures.


What Is The Difference?, F C. Wilkinson Jan 1967

What Is The Difference?, F C. Wilkinson

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

A lesson to be learnt - a dose in time saves the line.


Poultry Behaviour As It Affects Management, R H. Morris Jan 1967

Poultry Behaviour As It Affects Management, R H. Morris

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

UNDER natural conditions animals have considerable control over their movements and over their proximity to each other.

Today, however, there is a trend in animal husbandry towards greater intensificaton, and this is most evident in the poultry industry.


Tenth Random Sample Laying Test, 1966-67 : Litter, Department Of Agriculture, Western Australia Jan 1967

Tenth Random Sample Laying Test, 1966-67 : Litter, Department Of Agriculture, Western Australia

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

TENTH RANDOM SAMPLE LAYING TEST, 1966-67 - LITTER

POULTRY RESEARCH STATION, WEMBLEY

SECOND PROGRESSIVE REPORT TO 26th FEBRUARY,1967

Average age of birds 215.5 days or 30 weeks and 6 days.


Choking Of Milking Machine Pulsators, G R. Olney Jan 1967

Choking Of Milking Machine Pulsators, G R. Olney

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

THE value of applying the teat cup squeezing action more slowly, by "choking", has been well demonstrated for a number of years.

Leslie and Whittlestone (1938) suggested that brutal teat cups and snappy pulsators could be undesirable because of the trauma caused.

Choking was recommended by them to overcome this.


Agriculture In Western Australia : Past, Present And Future, A W. Hogstrom Jan 1967

Agriculture In Western Australia : Past, Present And Future, A W. Hogstrom

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

THE post war period has seen very rapid growth and changes in the agriculture of Western Australia.

Almost every industry and region of the State has contributed to the growth of rural production which in turn has been responsible for much of the development in other sectors of the economy.


Worms In Sheep. 3. Control Of Worms By Drenching, R W. Butler Jan 1967

Worms In Sheep. 3. Control Of Worms By Drenching, R W. Butler

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

DRENCHING for worm control must be carefully timed in relation to the effect of climatic conditions on the development and survival of worm larvae on the pastures, and the seasonal variation in worm burdens carried by sheep.


Cattle Stocking Rates In A Higher Rainfall Area, R Sprivulis Jan 1967

Cattle Stocking Rates In A Higher Rainfall Area, R Sprivulis

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

THE 1965 Pardelup cattle stocking rate trial was conducted with Hereford cross yearling steers on annual pasture of Mt. Barker sub. clover, Wirnmera ryegrass and various volunteer annual species.

This was topdressed with 186 lb. of superphosphate per acre in mid March.


Structure And Function Of The Cow's Reproductive System, L. L. Wilson, W. M. Dillon Jan 1967

Structure And Function Of The Cow's Reproductive System, L. L. Wilson, W. M. Dillon

Historical Documents of the Purdue Cooperative Extension Service Archive

No abstract provided.


Ua37/46 Scrapbook, Charles Taylor Jan 1967

Ua37/46 Scrapbook, Charles Taylor

Faculty/Staff Personal Papers

Scrapbook created by Ella Taylor to commemorate the life of her husband Charles Taylor. Charles Leland Taylor came to WKU as an professor of Agriculture in 1923 and served as department head from 1943-1958. He served in many agricultural roles through the state of Kentucky.


Nebraska Bird Review (January 1967) 35(1), Whole Issue Jan 1967

Nebraska Bird Review (January 1967) 35(1), Whole Issue

Nebraska Bird Review

Table of Contents

1966 (Forty-first) Spring Migration and Occurrence Report ... 2

Addition to 1965 Fall Record Report ... 22

1966 Fall Field Day ... 22

1966 Winter Meeting ... 22

Notes ... 23

In Memoriam—George W. Keim ... 24

—William G. Youngworth ... 24


Overtraining In Two-Cue Discrimination Learning In Rats, Douglas Neil Jan 1967

Overtraining In Two-Cue Discrimination Learning In Rats, Douglas Neil

University of the Pacific Theses and Dissertations

The present experiment was designed to produce additional experimental evidence on the effects of overtraining on attention in a two-cue discrimination problem. It was the contention of the present study that Sutherland and Holgate's failure to obtain equal mastery of cues was due to insufficient training. If training had been prolonged far enough equal mastery of cues should result. That is, if Ss were overtrained on a two-cue discrimination problem and tested for level of performance on each cue separately at the end of overtraining Ss would perform at near 100% on the test.


Annual Bird Count Under Way In Area, Jessie Maye Smith Dec 1966

Annual Bird Count Under Way In Area, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


2 Sides View Eagle Issue, Jessie Maye Smith Dec 1966

2 Sides View Eagle Issue, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Audubon Report Lists Rare Area Sightings, Jessie Maye Smith Dec 1966

Audubon Report Lists Rare Area Sightings, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Variety Of Birds In Yard, Jessie Maye Smith Dec 1966

Variety Of Birds In Yard, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


A Comparative Osteological Study Of Two Species Of Colubridae: (Pituophis And Thamnophis), Robert E. Bullock, Wilmer W. Tanner Dec 1966

A Comparative Osteological Study Of Two Species Of Colubridae: (Pituophis And Thamnophis), Robert E. Bullock, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

The complete skeletal anatomy of Pituophis catenifer deserticola Stejneger is described in detail. The osteology of this species is compared with that of Thamnophis radix haydeni Kennicott in the following areas: atlas, axis, first thoracic, other thoracic lumbar, anterior caudal, middle caudal, and posterior caudal vertebrae, as well as the skull and hyoid apparatus.

Many structural similarities exist in these two species of colubrids. The more important structures or aspects in which similarities were observed are: (1) the natural division of the vertebral column into regions and subregions, (2) the gross morphology of the various types of vertebrae, (3) the …


Front Matter, Vol. 8 No. 3 Dec 1966

Front Matter, Vol. 8 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


End Matter, Vol. 8 No. 3 Dec 1966

End Matter, Vol. 8 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Overlapping Ranges Identification Problem, Jessie Maye Smith Nov 1966

Overlapping Ranges Identification Problem, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Birds Of Prey Often Victims, Jessie Maye Smith Nov 1966

Birds Of Prey Often Victims, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Count Nearly Ended On Seasonal Visitors, Jessie Maye Smith Nov 1966

Count Nearly Ended On Seasonal Visitors, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Audubon S Great Bird Art Shows 3 Stages Of Development, Jessie Maye Smith Nov 1966

Audubon S Great Bird Art Shows 3 Stages Of Development, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.