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South Dakota State University

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Heat Detection, Cooperative Extension South Dakota State University Mar 1978

Heat Detection, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Standing heat (estrus) is the time when the cow stands to be mounted by other cows or a bull. The heat (estrous) cycle (number of days from one standing heat to the next) of the cow averages 21 days. Heat cycle length is usually consistent for an individual animal, but can vary from 17 to 24 days. The average cow will be in standing heat for about 14 hours. Some animals may stand for only 4 hours; others as long as 24 hours.

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Alfalfa Management On Dryland, L. A. Derscheid, C. R. Krueger, M. D. Rumbaugh Mar 1978

Alfalfa Management On Dryland, L. A. Derscheid, C. R. Krueger, M. D. Rumbaugh

SDSU Extension Fact Sheets

Alfalfa management on dryland discusses alfalfa-grass mixtures, stand establishment, harvesting and grazing management, fertilization, insect, weed, and disease control, and using alfalfa as a soil-building crop.

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South Dakota State University 1978 Summer Session Bulletin, South Dakota State University Mar 1978

South Dakota State University 1978 Summer Session Bulletin, South Dakota State University

South Dakota State University Catalogs and Bulletins: 1935 to present

No abstract provided.

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Sdsu Collegian, February 22, 1978, Student Association Of South Dakota State University Feb 1978

Sdsu Collegian, February 22, 1978, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 86, No. 21

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Sdsu Collegian, February 15, 1978, Student Association Of South Dakota State University Feb 1978

Sdsu Collegian, February 15, 1978, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 86, No. 20

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Sdsu Collegian, February 8, 1978, Student Association Of South Dakota State University Feb 1978

Sdsu Collegian, February 8, 1978, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 86, No. 19

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Sdsu Collegian, February 1, 1978, Student Association Of South Dakota State University Feb 1978

Sdsu Collegian, February 1, 1978, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 86, No. 18

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Sdsu Collegian, January 25, 1978, Student Association Of South Dakota State University Jan 1978

Sdsu Collegian, January 25, 1978, Student Association Of South Dakota State University

The Collegian Archive : 1970 to 1979

Vol. 86, No. 17

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Cool-Season Grasses For May And June, Cooperative Extension South Dakota State University Jan 1978

Cool-Season Grasses For May And June, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Several species of tame grass and several natives are most productive during late May and June. They usually become somewhat dormant during July and August but resume growth again in September.

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Efficiency To Slaughter Of Calves From Angus, Charolais And Reciprocal Cross Cows, M. A. Brown, C. A. Dinkel Jan 1978

Efficiency To Slaughter Of Calves From Angus, Charolais And Reciprocal Cross Cows, M. A. Brown, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

There has been concern in recent years about effects of cow size on efficiency of production in that larger breeds are being used in crossbreeding systems and because many of the breeds are selected for larger mature weights through selection for large frame size. To evaluate this, knowledge is needed about feed energy requirements per unit product sold in different breeds and crosses. The purpose of this research was to evaluate TDN requirements of cows and calves per unit slaughter weight and retail product yield in calves from Angus, Charolais and reciprocal cross cows.

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An Evaluation Of Heterosis And Mating Systems In Hereford Cattle, Wayne Smith, M. A. Brown, C. A. Dinkel Jan 1978

An Evaluation Of Heterosis And Mating Systems In Hereford Cattle, Wayne Smith, M. A. Brown, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

The objective of this project was to evaluate the effectiveness of inbreeding in furthering the improvement of beef cattle. Results obtained with other species, notably corn, have led to similar research projects with farm animals.

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Effect Of Nutrition On Reproductive Performance, Gerry Kuhl Jan 1978

Effect Of Nutrition On Reproductive Performance, Gerry Kuhl

South Dakota Cow-Calf Field Day Proceedings, 1978

Reproductive performance is the name of the game to the cow-calf producer. The brood cow exists for one purpose -- to consistently produce strong, vigorous calves with heavy weaning weights. In order for the producer to improve the reproductive efficiency of his cow herd, he must critically evaluate his operat ion, establish a set of realistic goals, and thoroughly understand the major factors influencing their achievement. In general, the aim of an efficient cow-calf operation should be to produce calves weighing 450-500 pounds at weaning from 95% of the cows every 12 months. The key to achieving these goals is …

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Forage Finishing Exotic Crossbred And British Cattle, V. L. Anderson, C. A. Dinkel Jan 1978

Forage Finishing Exotic Crossbred And British Cattle, V. L. Anderson, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

The success of forage-finishing cattle depends on the differences in price and availability of grain and forage. Since there is limited information available on finishing exotic crossbred cattle on all-forage rations, a 2-year project was conducted to study the differences in feedlot performance and carcasses from forage- and concentrate-fed animals.

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Improving Forage Production On Claypan Soils, F. R. Gartner, R. I. Butterfield Jan 1978

Improving Forage Production On Claypan Soils, F. R. Gartner, R. I. Butterfield

South Dakota Cow-Calf Field Day Proceedings, 1978

Mechanical range improvement practices such as contour ripping and furrowing have been used to increase forage production on a variety of range sites in the northern Great Plains. These improvement practices seem to have particular promise on Claypan and Thin Claypan range sites in western South Dakota. Soils on these range sites have a sodium dispersed layer (claypan) at or near the surface. This layer severely reduces the rate of water infiltration, thus causing a greater amount of the precipitation to run off or pool up and evaporate from the soil surface than would happen on soils of similar texture …

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Winter Feeding Of Pregnant Stock Cows Utilizing Aspen Tree Fiber, L. D. Kamstra, M. Singh, J. A. Minyard, D. E. Moore Jan 1978

Winter Feeding Of Pregnant Stock Cows Utilizing Aspen Tree Fiber, L. D. Kamstra, M. Singh, J. A. Minyard, D. E. Moore

South Dakota Cow-Calf Field Day Proceedings, 1978

The entire aspen tree (except roots) fiber was used successfully as a major component of wintering rations for pregnant stock cows. It was necessary to correct aspen for deficiencies in protein, phosphorus and vitamin A. The stock cows were only in fair to good condition going into the winter feeding period, and their condition remained fairly constant for all feeding groups with normal or below normal animal death losses. Normal, healthy calves were produced in all feeding groups as indicated by birth and weaning weights. Conception was not affected by feed type, although more open cows were present in the …

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Numbers, Condition And Economics In Range Management, James R. Johnson Jan 1978

Numbers, Condition And Economics In Range Management, James R. Johnson

South Dakota Cow-Calf Field Day Proceedings, 1978

Recently I participated in Montana's Ag Lender's Range School in Miles City. It was, in my judgment, a good session. We had the opportunity to view range research that demonstrated long-term differences in livestock performance where variable stocking rates and utilization had been practiced. In total, the "best" systems were those that were conservative and consistent with Soil Conservation Service and Montana State University guidelines.

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What The Breeder Sells And The Producer Buys: Breeding Value, R. L. Willham Jan 1978

What The Breeder Sells And The Producer Buys: Breeding Value, R. L. Willham

South Dakota Cow-Calf Field Day Proceedings, 1978

A breeding value is the value of an individual as a parent. This is precisely what breeding stock herds sell. It is the value of the progeny from their breeding stock in the herd of the buyer that is the issue. As specification of product becomes more important in the beef industry, breeders can be merchandizing breeding value. Beef breeders are selling a product that must transmit a sample half of its germ plasm to progeny before the result is realized. Commercial producers sell pounds, not breeding value, but they need to buy breeding value as well as combine breeds …

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An Evaluation Of The Ratio Of Calf Weight To Cow Weight As An Indicator Of Cow Efficiency, C. A. Dinkel, M. A. Brown Jan 1978

An Evaluation Of The Ratio Of Calf Weight To Cow Weight As An Indicator Of Cow Efficiency, C. A. Dinkel, M. A. Brown

South Dakota Cow-Calf Field Day Proceedings, 1978

Weaning weight of calf predicts cow efficiency more accurately than the ratio of weaning weight to metabolic cow weight and the ratio of weaning weight to cow weight. A prediction equation was developed to combine calf weight with cow weight to increase accuracy of prediction from 3 to 11% above that achieved by weaning weight alone or the ratios.

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Effect Of Temporary Calf Separation On Day Of First Service And Conception At First Service, W. R. Trevillyan, M. Macnneil, C. A. Dinkel Jan 1978

Effect Of Temporary Calf Separation On Day Of First Service And Conception At First Service, W. R. Trevillyan, M. Macnneil, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

Results of several experiments have indicated the possible effectiveness of temporary calf separations from the cow, both in bringing cows into estrus early and in some cases improving conception rate. It has been demonstrated that frequency of lactation affects the reproductive ability of the cow and it is thought these temporary separations might be involved in this manner. The technique is a part of one of the currently used research methods in estrus synchronization and appears to be useful in conjunction with the hormone treatment. This study was undertaken to determine if calf separation technique would be useful when synchronization …

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Jackrabbits '78 Football, South Dakota State University Jan 1978

Jackrabbits '78 Football, South Dakota State University

Jackrabbit Football Media Guides (1950-2014)

A quick look at SDSU foes
A quick look at SDSU
Schedule
The team behind the team
Jackrabbit Athletic Staff
John Gregory: A Winner Every Year
Assistant Coaches
Letterman
Jacks Show New Look Offensively
Team Roster
The Immortal Roll: Jackrabbit All-Americans
Jackrabbit Fores for '78
Series Records
All-Time Records
Hobo Day results
SDSU year-by-year records
Jackrabbit record book
NCC record book
Stats
TV and Radio

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Relationships Of Cow Heigh To Production Traits In Angus, Charolais And Reciprocal Cross Cows, M. A. Brown, C. A. Dinkel Jan 1978

Relationships Of Cow Heigh To Production Traits In Angus, Charolais And Reciprocal Cross Cows, M. A. Brown, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

Records on 115 Angus, Charolais and reciprocal cross cows and their 423 calves born from 1972 to 1976 were used to evaluate the relationships between cow height at the withers and cow and calf traits. Taller cows tended to be heavier, in higher condition and produce calves heavier at birth with higher postweaning ADG. Four of these five strongest correlations of cow height with other cow and calf traits were in an unfavorable direction. Cow height was unrelated to milk production and calf postweaning feed efficiency and lowly associated (-.10

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Effects Of Mating And Management Systems On Beef Production, C. A. Dinkel, W. R. Trevillyan Jan 1978

Effects Of Mating And Management Systems On Beef Production, C. A. Dinkel, W. R. Trevillyan

South Dakota Cow-Calf Field Day Proceedings, 1978

In recent years there has been increased interest in crossbreeding of beef cattle and with the introduction of new breeds from the European continent increased interest in the use of larger and/or higher milking breeds in these crossbreeding systems. With the expected increase in nutrient requirements for maintenance and milk production associated with increased size of cow and increased milk production, changes in management practices need to be evaluated. This project was designed to evaluate the Simmental-Hereford and the Angus-Hereford two breed rotations and the straightbred Hereford, with all three groups receiving either usual herd management (regular) or a higher …

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Evlauation Of Breeds And Breed Crosses For The Production Of Weaning Weight In South Dakota, M. D. Macneil, M. A. Brown, C. A. Dinkel Jan 1978

Evlauation Of Breeds And Breed Crosses For The Production Of Weaning Weight In South Dakota, M. D. Macneil, M. A. Brown, C. A. Dinkel

South Dakota Cow-Calf Field Day Proceedings, 1978

Records on 41,403 calves from 324 contemporary groups were studied to determine the effect of a calf's breed background on its weaning weight. Calves with the heaviest weaning weights were crossbred, typically sired by Continental breed bulls and out of crossbred dams.

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Custom Beef Feeding : Costs For Small Lots, Cooperative Extension South Dakota State University Jan 1978

Custom Beef Feeding : Costs For Small Lots, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Many beef feeding lots in eastern South Dakota are standing empty. Some are not being used because the owners lack capital or access to the capital required to purchase feeders. Other operators are unwilling to bear the risk of placing high priced feeders in the lot.

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Manure Use In Cropping, Cooperative Extension South Dakota State University Jan 1978

Manure Use In Cropping, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

Proper management and utilization of this plant food resource can mean not only less investment in commercial fertilizer but also increased crop yields because of improved soil structure and water infiltration.

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Chemical Weed Control In Small Grains And Forages 1978, Cooperative Extension South Dakota State University Jan 1978

Chemical Weed Control In Small Grains And Forages 1978, Cooperative Extension South Dakota State University

SDSU Extension Fact Sheets

This document covers a large number of chemical weed control options across a variety of small grains and forages in South Dakota for 1978. This Fact Sheet is designed to provide a summary of herbicide usage options. Chemical options are listed in a table with the following headers: weed name, common chemical name, actual active ingredient rate of application per pound, trade name formulation, rate of product application, product time to spray and additional remarks per chemical and plant type.

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Partial Purification Of Heat Stable Enterotoxin Produced By Escherichia Coli Isolated From A Case Of Porcine Colibacillosis, Lee Ann Zochert Swanson Jan 1978

Partial Purification Of Heat Stable Enterotoxin Produced By Escherichia Coli Isolated From A Case Of Porcine Colibacillosis, Lee Ann Zochert Swanson

Electronic Theses and Dissertations

Colibacillosis (CB) in livestock is an economically important disease caused by the bacterium Escherichia coli. It is estimated that nearly one third of all baby pigs born in South Dakota die prior to weaning, and one fourth of these deaths is believed to be caused by CB (62). Similarly, it has been stated that 6 to 20% of calves born alive die from this disease (3). The term colibacillosis encompasses a group of diseases caused by E. coli in neonatal and weaned animals and humans (3). The several different types of CB are due to the differences in tissue localization …

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South Dakota Farm And Home Research, South Dakota State University Jan 1978

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

State’s Dairy Industry: Bright Future [p] 3
Fermented Colostrum [p] 5
Cafeteria Choice [p] 7
Miniaturized Junipers [p] 9
Dicamba Drift [p] 12
Shrubs for Modern Landscaping [p] 14
Low-cost Protein [p] 17
A Check on Antibiotics [p] 18

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Effects Of Grazing Systems On Sharp-Tailed Grouse Habitat, Samuel N. Mattise Jan 1978

Effects Of Grazing Systems On Sharp-Tailed Grouse Habitat, Samuel N. Mattise

Electronic Theses and Dissertations

Effects of grazing systems on sharp-tailed grouse (Pedioecetes phasianellus jamesi) nesting and brooding habitats in the Little Missouri National Grasslands of southwestern North Dakota were evaluated. Three grazing allotments with deferred-rotation grazing systems and three allotments with season-long grazing systems were randomly selected for study. Fifty measurements of vegetation were taken using the height-density pole on line transects in each of three range sites; rolling grasslands, upland grasslands and lowland draws. Vegetation was sampled in late spring, summer and fall of 1976 and early spring of 1977. Average height-density of vegetation for the season-long grazing system was significantly greater than …

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Wildlife Habitat In The James River Valley, South Dakota, L. Paul Schneider Jan 1978

Wildlife Habitat In The James River Valley, South Dakota, L. Paul Schneider

Electronic Theses and Dissertations

A wildlife habitat inventory was conducted on the 12 485 ha study area of the James River floodplain in north-eastern South Dakota. Included were vegetation mapping, small mammal trapping, waterfowl breeding pair counts, waterfowl brood counts, bird census routes, and general observations. Natural vegetation consisted of 3181 ha of grassland, 2002 ha of woodland, 1115 ha of savannah, and 392 ha of marshland. Small mammal trapping revealed low densities of mostly white-footed mice (Peromyscus spp.). No vegetation type was more valuable to small mammals than any other. Waterfowl breeding pairs, mostly mallard, blue-winged teal, and wood duck, numbered 244 in …

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