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1988

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Full-Text Articles in Other Animal Sciences

Comprehension Of "Absence" By An African Grey Parrot: Learning With Respect To Questions Of Same/Different, Irene M. Pepperberg Nov 1988

Comprehension Of "Absence" By An African Grey Parrot: Learning With Respect To Questions Of Same/Different, Irene M. Pepperberg

Sentience Collection

An African Grey parrot, Alex, learned to report on the absence or presence of similarity and difference between two objects. Alex was shown pairs of objects that were (a) totally dissimilar, (b) identical, or (c) similar or different with respect to one of three attributes (color, shape, or material). In the first two cases, he responded to the respective queries of "What's same?" or "What's different?" with the vocalization "none," and in the third case he responded with the appropriate category label ("color," "shape," or "mah-mah" [matter]). His accuracy was 80.9% to 83.9% for pairs of familiar objects not used …


Variation In Piglet Weights: Weight Gains In The First Days After Birth And Their Relationship With Later Performance, B. K. Thompson, D. Fraser Sep 1988

Variation In Piglet Weights: Weight Gains In The First Days After Birth And Their Relationship With Later Performance, B. K. Thompson, D. Fraser

Ontogeny Collection

Piglets from 42 litters of Yorkshire sows were weighed 0, 1, 2, 3, 4, 5, 7, 10, and 14 d after farrowing in order to explore the highly variable weight gains during the first 2 wk after birth. All litters were adjusted to 10-12 piglets by fostering. Litters differed greatly in average gain per piglet during the first 3 d after farrowing, with litter means ranging from 5 to 227 g d‒1 per piglet for the 3-d period. Gains during days 0-3 tended to be somewhat lower if the sow had a high body temperature during these days, but the …


Use Of Water By Piglets In The First Days After Birth, David Fraser, P. A. Phillips, B. K. Thompson, W. B. Peeters Sep 1988

Use Of Water By Piglets In The First Days After Birth, David Fraser, P. A. Phillips, B. K. Thompson, W. B. Peeters

Ontogeny Collection

Use of drinking water was determined for 51 litters of piglets by weighing and refilling a water dispenser each day for the first 4 d after farrowing. Measures of spillage, evaporation, and piglet drinking behavior indicated that most disappearance of water represented actual drinking by the piglets. Water use varied greatly among litters with an average of 46 g d‒1 per piglet over the 4 d, and a range of negligible use to about 200 g d‒1. Water use, especially on day 2, was correlated negatively with the average weight gain of the litter during the first …


Histology Of The Ovaries And Fat Bodies Of Chthonerpeton Indistinctum, Rafael O. De Sá, Nibia Berois Jun 1988

Histology Of The Ovaries And Fat Bodies Of Chthonerpeton Indistinctum, Rafael O. De Sá, Nibia Berois

Biology Faculty Publications

Histological analysis revealed three different stages in the development of ovarian follicles of Chthonerpeton indistinctum. These stages are identified by (1) location of the oocyte in the ovary wall, (2) oocyte morphology and staining characteristics, (3) development of the zona pellucida, and (4) organization of the follicular layer. Atretic follicles and corpora lutea also were found. Fat bodies are composed of well-developed adipose tissue.


Eavesdropping By Bats: The Influence Of Echolocation Call Design And Foraging Strategy, Jonathan Balcombe, M. Brock Fenton Jan 1988

Eavesdropping By Bats: The Influence Of Echolocation Call Design And Foraging Strategy, Jonathan Balcombe, M. Brock Fenton

Sentience Collection

We used playback presentations to free-flying bats of 3 species to assess the influence of echolocation call design and foraging strategy on the role of echolocation calls in communication. Near feeding sites over water, Myotis lucifugus and M. yumanensis responded positively only to echolocation calls of conspecifics. Near roosts, these bats did not respond before young of the year became volant, and after this responded to presentations of echolocation calls of similar and dissimilar design. At feeding sites Lasiurus borealis responded only to echolocation calls of conspecifics and particularly to "feeding buzzes". While Myotis, particularly subadults, appear to use the …


Title Page, Verso Of The Title Page, And Table Of Contents For Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik, Band 7 (1988), Michael Stubbe Jan 1988

Title Page, Verso Of The Title Page, And Table Of Contents For Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik, Band 7 (1988), Michael Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Title page, verso of the title page, and table of contents for Erforschung biologischer Ressourcen der Mongolischen Volksrepublik, Band 7 (1988)


Verlauf Und Wissenschaftliche Ergebnisse Der Expedition In Die Mongolische Volksrepublik 1978, Siegfried Huneck, Hans Dieter Knapp Jan 1988

Verlauf Und Wissenschaftliche Ergebnisse Der Expedition In Die Mongolische Volksrepublik 1978, Siegfried Huneck, Hans Dieter Knapp

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Einleitung

Auf Grund eines Abkommens über wissenschaftliche Zusammenarbeit der Akademie der Wissenschaftel'l der Mongolischen Volksrepublik und der Akademie der Wissenschaften der Deutschen Demokratischen Republik führten das Institut für Naturstoffe (IN) in Ulan-Bator und das Institut für Biochemie der Pflanzen (IBP) in Halle/Saale vom 13. Juni bis 29. Juli 1978 eine gemeinsame Expedition in die MVR durch. An dieser Expedition nahmen von Seiten der AdW der DDR Dr. habil. S. HUNECK (Leiter der Expedition), Dr. habil. H. RIPPERGER (beide IBP) und Dr. H. D. KNAPP (damals Müritz-Museum, Waren) und von Seiten der AdW Dr. BASANSUREN (IN) und zeitweilig Dr. U. COGT …


Zur Variabilität Der Asiatischen Wüstenkröte Bufo Raddei Strauen, 1876, Wolf-Rüdiger Grosse, Annegret Stubbe Jan 1988

Zur Variabilität Der Asiatischen Wüstenkröte Bufo Raddei Strauen, 1876, Wolf-Rüdiger Grosse, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Zusammenfassung

1. Die Wüstenkröte, Bufo raddei, lebt in der Nähe von Wasserlachen und Lagunen der Flußauen in der Zentralmongolei, wo sie in der Dämmerung erbeutet wurde.

2. Der Fang 1984 erbrachte nur 1- und 2(3)-jährige Tiere, wobei die metrische Entwicklung der Art auf Unterschiede zu Bufo viridis hinweist.

3. Eine Analyse der Variabilität des Grundmusters zeigt dagegen deutliche Parallelen zu Bufo viridis. Arttypische Merkmale sind dabei die dunkelbraunen Fingerspitzen und die Ausbildung eines Rückenstreifens.

Summary

1. Mongolian Toad, Bufo raddei, lives in pools and lagoons of rivers of Central Mongolia. The animals were captured there in dusk. …


Die Gemeinsame Botanische Expedition Des Instituts Für Biochemie Der Pflanzen In Halle Und Des Instituts Für Volksmedizin In Ulan-Bator Durch Die Mongolische Volksrepublik 1983, Siegfried Huneck, Werner Hilbig Jan 1988

Die Gemeinsame Botanische Expedition Des Instituts Für Biochemie Der Pflanzen In Halle Und Des Instituts Für Volksmedizin In Ulan-Bator Durch Die Mongolische Volksrepublik 1983, Siegfried Huneck, Werner Hilbig

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Einleitung

Im Rahmen des Abkommens über wissenschaftliche Zusammenarbeit der Akademie der Wissenschaften der DDR und des Ministeriums für Volksgesundheit der Mongolischen Volksrepublik (MVR) führten das Institut für Biochemie der Pflanzen (IBP) in Halle/Saale und das Institut für Volksmedizin (IVM) in Ulan-Bator vom 15. Juni bis 17. August 1983 die zweite gemeinsame Expedition in die MVR durch. An dieser Expedition nahmen teil: Dr. habil. S. HUNECK (IBP, Leiter der Expedition), Dr. W. HILBIG (Mattin-Luther-Universität Halle, Wissenschaftsbereich Geobotanik und Botanischer Garten, Halle/Saale), Dr. T. KHAIDA V (Direktor des IVM) und Dr. U. COGT (Institut für Botanik der Akademie der Wissenschaften in Ulan-Bator). …


Nachruf Für E. M. Lavrenko, Z. V. Karamyševa, Werner Hilbig Jan 1988

Nachruf Für E. M. Lavrenko, Z. V. Karamyševa, Werner Hilbig

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Am 18. Juli 1987 verstarb in Leningrad im Alter von 87 Jahren Prof. Dr. Evgenij Michajlovic LAVRENKO.

Die biologische Forschung in der Mongolei verliert damit ihren Senior und einen ihrer herausragenden Vertreter, der seit den 40er Jahren mit der Mongoleiforschung verbunden ist und ihr wesentliche Impulse verliehen hat.


Bibliographie Pflanzen Soziologischer Arbeiten Über Die Mongolische Volksrepublik. Folge 2, Werner Hilbig Jan 1988

Bibliographie Pflanzen Soziologischer Arbeiten Über Die Mongolische Volksrepublik. Folge 2, Werner Hilbig

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Zusammenfassung

Der vorliegende Teil 2 einer Bibliographie pflanzensoziologischer und vegetationsökologischer Arbeiten über das Gebiet der Mongolischen Volksrepublik (MVR) enthält im wesentlichen Arbeiten aus den Jahren 1980-1985. Es werden 201 Arbeiten zitiert.

Summary

The second part of the bibliography of geobotanical and synecological publications about the territory of the Mongolian People's Republic contains publications mainly from 1980 till 1985. 201 papers are quoted.


Entwicklung Und Stand Der Erforschung Der Gefäßpflanzenflora Der Mongolischen Volksrepublik, I. A. Gubanov, Werner Hilbig Jan 1988

Entwicklung Und Stand Der Erforschung Der Gefäßpflanzenflora Der Mongolischen Volksrepublik, I. A. Gubanov, Werner Hilbig

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Zusammenfassung

Vorliegender Beitrag gibt einen überblick über die floristische Durchforschung der MVR.

Erste Kenntnisse über die Flora der Mongolei stammen aus dem 18. Jh. und der ersten Hälfte des 19. Jh. (MESSERSCHMIDT, BUNGE, MAXIMOVICZ). In der zweiten Hälfte und am Ende des 19. Jh. erbrachten vor allem die Expeditionen der Russischen Geographischen Gesellschaft umfangreiches botanisches Material (POTANIN, KOZLOV). Auch andere Forscher führten ausgedehnte Sammelreisen durcn (KLEMENZ, PALIBIN, SAPOZNIKOV). Nach der mongolischen Revolution von 1921 wurden von sowjetischer Seite bereits in den 20er Jahren Sammelreisen durchgeführt. 1925 wurde die Mongolische Kommission der Akademie der Wissenschaften der UdSSR geschaffen, die weitere Expeditionen …


Mikroklima-Untersuchungen In Pflanzengesellschaften Verschiedener Höhenstufen In Hochgebirgen Der Nordwest- Und Südmongolei, Werner Hilbig, K. Helmecke, Z. Schamsran, D. Bumzaa Jan 1988

Mikroklima-Untersuchungen In Pflanzengesellschaften Verschiedener Höhenstufen In Hochgebirgen Der Nordwest- Und Südmongolei, Werner Hilbig, K. Helmecke, Z. Schamsran, D. Bumzaa

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Im Rahmen der Mongolisch-Deutschen Biologischen Expeditionen wurden erste Mikroklimauntersuchungen im Jahre 1973 in ausgewählten Pflanzengesellschaften der Wüste und Halbwüste im $üdgobi-Aimak durchgeführt (HELMECKE u. SCHAMSRAN 1979). Auch von sowjetisfber (BERESNEVA 1974, 1981) und von polnischer Seite (vgl. KLIMEK 1980) liegen mikroklimatologische Untersuchungen für verschiedene Gebiete der MVR vor. Von den Gebirgen der MVR wurde besonders der Südteil des Changai berücksichtigt. Hier wurden Mikroklimamessungen in verschiedenen Höhenstufen durchgeführtl (BRZEZNIAK u. NIEDZWIEDZ 1980). Die von Biologen der Universitäten Halle-Wittenberg und Ulan-Bator von 1977 bis 1979 durchgeführten Untersuchungen in Hochebirgen der MVR (Charchiraa, Uvs Aimak; Ich-Bogd, Bajanchongor Aimak) schlosseh neben den floristisch-vegetationskundlichen und …


A Taxonomic And Distributional Study Of The Adult Caddisflies Of The Family Leptoceridae (Insecta: Trichoptera) Of West Virginia, James B. Glover Jan 1988

A Taxonomic And Distributional Study Of The Adult Caddisflies Of The Family Leptoceridae (Insecta: Trichoptera) Of West Virginia, James B. Glover

Theses, Dissertations and Capstones

A survey of the adult Leptoceridae of West Virginia revealed 27 species, 25 of which were state records. The most abundant genus in the state was Ceraclea which had ten different species. Triaenodes had six different species, while Oecetis had five. The most common species in the state included C. cancellatus, C. maculate, O. avara, and O. inconspicua. Species that were abundant only in the larger rivers of the western portion of the state included C. flava, C. maculata, Nectopsyche pavida, and T. ignita. C. neffi seemed to be most abundant in the higher elevations of the east. Ceraclea ophioderus, …


Relationship Between Agronomic And Silage Quality Traits Of Forage Sorghum Cultivars, J. White, K. Bolsen, B. Kirch Jan 1988

Relationship Between Agronomic And Silage Quality Traits Of Forage Sorghum Cultivars, J. White, K. Bolsen, B. Kirch

Kansas Agricultural Experiment Station Research Reports

Results from two trials evaluating 11 forage sorghums as silage crops indicated that silage quality traits of voluntary intake, digestibility, and crude protein content were linearly associated with the agronomic characteristics of days to half bloom and plant height. Intake was negatively associated with plant height (r = -.49); digestibility was negatively associated with days to half bloom (r = -.39) and plant height (r = -.49); and crude protein was negatively associated with days to half bloom (r = - .51) and plant height (r = -. 71). Within the same cultivar, but between years, voluntary intake varied by …


The Effect Of Alfalfa Weevil Control On Alfalfa Hay Yield And Quality, B. Ritter, B. Bauernfeind Jan 1988

The Effect Of Alfalfa Weevil Control On Alfalfa Hay Yield And Quality, B. Ritter, B. Bauernfeind

Kansas Agricultural Experiment Station Research Reports

A 2-year-old, irriagated alfalfa field was left untreated or treated with ¼ lb, ½ lb, or 1 lb of Furadan® per acre on April 5, 1986. Alfalfa weevil populations were determined 2,9,16 and 23 days post-spraying. Forage samples were collected at about the 1/10 bloom stage of maturity. All three Furadan levels provided excellent weevil control up to 23 days post-spraying, and all resulted in an increase in dry matter yield. But only the yield of the 1 lb./A. treatment was significantly (P<.15) greater than the untreated forage (1.97 vs. 2.44 tons/A). There was no difference in nutrient composition between the untreated and treated forage. All Furadan treatment resulted in a net economic gain per acre. In this study, between ½ lb and 1 lb Furadan per acre resulted in the greatest weevil control and economic return per acre.


The Influence Of Stage Of Pregnancy On Digestion Characteristics In Beef Cows, A. Beharka, B. Cochran, D. Harmon, T. Avery Jan 1988

The Influence Of Stage Of Pregnancy On Digestion Characteristics In Beef Cows, A. Beharka, B. Cochran, D. Harmon, T. Avery

Kansas Agricultural Experiment Station Research Reports

Feed intake during the final trimester of gestation did not appear to vary significantly until 2 weeks before calving, after which it decreased dramatically. Measurements during two periods in the final trimester suggested that passage rate increased and digestibility decreased, as pregnancy proceeded.


Performance Of Stocker Heifers And Steers Grazing High Endophyte Fescue And Offered Oxytetracycline In A Mineral Mixture., K. Coffey, F. Brazle Jan 1988

Performance Of Stocker Heifers And Steers Grazing High Endophyte Fescue And Offered Oxytetracycline In A Mineral Mixture., K. Coffey, F. Brazle

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to evaluate the performance of stocker calves grazing high-endophyte fescue (68 to 70%) and offered oxytetracycline in a free-choice mineral supplement. In Experiment 1, 24 yearling crossbred heifers were utilized in a 112-day grazing study beginning on June 18. Performance of both control calves and those receiving oxytetracycline was extremely poor, making data interpretation difficult. Average oxytetracycline consumption was 327 mg per head, daily. Approximately 8296 of the total grazing time occurred during the daylight hours (6arn - l0pm) for both treatment groups. Heifers offered the medicated mineral mix grazed 20 minutes more than heifers offered …


Effect Of Medicated Mineral Mixtures And A Pinkeye Vaccine On The Gain And Health Of Steers Grazing Native Grass Pastures, F. Brazle Jan 1988

Effect Of Medicated Mineral Mixtures And A Pinkeye Vaccine On The Gain And Health Of Steers Grazing Native Grass Pastures, F. Brazle

Kansas Agricultural Experiment Station Research Reports

Feeding supplements containing an antibiotic or ionophore improved stocker gains by .06 to .26 lb per head daily. A combination of Bovatec and Aureomycin in the mineral mixture improved (P<.08) steer gains over feeding Aureomycin alone. Mineral intake was higher than expected for the steers grazing burned, double-stocked) native grass pastures in 1987. Vaccinating steers with Piliguard at turn-out had no effect on pinkeye incidence and reduced stocker gains slightly.


Kansas Custom Cattle Feeding Practices, Ted C. Schroeder, Gerry L. Kuhl Jan 1988

Kansas Custom Cattle Feeding Practices, Ted C. Schroeder, Gerry L. Kuhl

Kansas Agricultural Experiment Station Research Reports

A survey of Kansas custom cattle feedlots was conducted in the fall of 1987. This paper summarizes the survey and discusses some of the custom cattle feeding services and charges being offered.


Effect Of Tetronasin On Frothy Bloat In Cattle Caused By High-Grain Diet, L.R. Neibarger, Tiruvoor G. Nagaraja Jan 1988

Effect Of Tetronasin On Frothy Bloat In Cattle Caused By High-Grain Diet, L.R. Neibarger, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Feeding Tetronasin reduced incidence of frothy bloat in cattle fed a high-grain diet. The effective dose was 0.25 mg/kg body weight when administered prior to the onset of frothy bloat. At 0.15 mg/kg body weight, the antibiotic was less effective but the degree of bloat was considerably less than that of steers fed no antibiotic. Tetronasin also reduced the severity of bloat in steers that were already bloating prior to its administration.


Daily Or Weekly Rotational Feeding Of Bovatec®- And Rumensin®/Tylan® To Cattle On A Steam-Flaked Corn Finishing Ration, Robert T. Brandt Jr. Jan 1988

Daily Or Weekly Rotational Feeding Of Bovatec®- And Rumensin®/Tylan® To Cattle On A Steam-Flaked Corn Finishing Ration, Robert T. Brandt Jr.

Kansas Agricultural Experiment Station Research Reports

One hundred sixty-five crossbred steers averaging 823 lb were utilized to evaluate the daily or weekly rotational feeding of ionophores. Treatments were (g/ton of feed, 90% dry basis): 1) Bovatec (B; 30), 2) Rumensin plus Tylan (RT; 25 and 10, respectively), 3) treatments one and two in a daily rotation (D), and 4) treatments one and two in a weekly rotation (W). Steers fed RT consumed less (P<.05) dry matter than B, D>or W steers. No differences (P>.15) in daily gain were observed, suggesting that the increased consumption by B, D) and W steers was accompanied by an al teration in passage rate …


Effect Of Commercial Inoculants On Fermentation Of 1987 Silage Crops, K. Bolsen, A. Laytimi, R. Hart, L. Nuzback, F. Niroomand, L. Leipold, H Ilg Jan 1988

Effect Of Commercial Inoculants On Fermentation Of 1987 Silage Crops, K. Bolsen, A. Laytimi, R. Hart, L. Nuzback, F. Niroomand, L. Leipold, H Ilg

Kansas Agricultural Experiment Station Research Reports

Fourteen commercial silage inoculants were evaluated in 32 trials using nine different crop species harvested in 1987 and ensiled in PVC laboratory silos. Microorganism profiles of the crops showed high numbers of lactic acid bacteria (LAB) in all but one trial. Most inoculants supplied relatively high numbers of LAB per gram of crop--52 of the 66 inoculant samples supplied more than 10 (100,000) viable LAB per gram. The forage crops--wheat, bromegrass, sudangrass, and alfalfa--were highly responsive to the inoculants. When compared to untreated silages, treated silages had lower pH, acetic acid, ethanol, and ammonia-nitrogen values and higher lactic acid content. …


Responses Of Pig Embryos To Amino Acids (1988), C F. Rosenkrans, Duane L. Davis Jan 1988

Responses Of Pig Embryos To Amino Acids (1988), C F. Rosenkrans, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

Mixtures of vitamins and amino acids produced detrimental effects on the development of pig embryos. However, addition of three amino acids, phenylalanine, methionine, and isoleuncine, enhanced pig embryo development.; Swine Day, Manhattan, KS, November 17, 1988


Effect Of Wheat Mill Run On Finishing Pig Performance (1988), C H. Fahrenholz, Keith C. Behnke, David A. Nichols Jan 1988

Effect Of Wheat Mill Run On Finishing Pig Performance (1988), C H. Fahrenholz, Keith C. Behnke, David A. Nichols

Kansas Agricultural Experiment Station Research Reports

Finishing pigs were fed diets containing 0, 15, 30, or 45% wheat mill run (WMR) during cold and hot weather. Results indicate that 15% WMR can be included in finishing swine diets without adversely affecting pig performance. Apparent digestibilities of dry matter, gross energy, and crude fiber were lower (P<.05) for diets containing WMR than for the control. During cold weather incorporating up to 15% WMR in the diet may be economically justified, because there was no difference in cost of gain for pigs receiving the control or 15% WMR diets. During hot weather, cost of gain increased as the level of WMR in the diet increased.; Swine Day, Manhattan, KS, November 17, 1988


Comparison Of Wet Versus Dry Feeding For Starter Pigs (1988), R C. Thaler, Jim L. Nelssen Jan 1988

Comparison Of Wet Versus Dry Feeding For Starter Pigs (1988), R C. Thaler, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Two studies utilizing a total of 480 pigs (21 days old) were conducted to compare wet versus dry feeding during a 4 wk starter period. Pigs were fed a pelletized, high nutrient density diet for the first 2 wk and a semi-complex diet (meal form) for the last 2 wk. Aqua® feeders were used in all pens. During the first 2 wk of the study, feeding method had no effect on daily gain or feed intake; however, pigs fed dry diets required less feed per pound of gain than did pigs consuming wet diets (P<.0002). For the overall 4 wk trial, gains and feed intake did not differ between treatments, but pigs fed the wet diets were less efficient than pigs receiving the dry diets. Based on these results, wet feeding is not advantageous to starter pig performance.; Swine Day, Manhattan, KS, November 17, 1988


Litter Traits For Gilts Fed 4 Or 7.4 Lb Feed During The First Ten Days After Breeding (1988), Duane L. Davis, Z Zhang, Jeffrey S. Stevenson Jan 1988

Litter Traits For Gilts Fed 4 Or 7.4 Lb Feed During The First Ten Days After Breeding (1988), Duane L. Davis, Z Zhang, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

We tested the effects of feeding 4 or 7.4 lb of a complete gestation diet to gilts during days 0 to 2 or 3 to 10 after first detected estrus (day 0) and mating. There was a tendency (P = .11) for the 7.4 lb/day treatment to increase litter size when fed from day 0 to 2 and to decrease (P = .17) litter size when fed from day 3 to 10. Gilts artificially inseminated at puberty farrowed fewer (P<.05) pigs than gilts inseminated at a second or later estrus.; Swine Day, Manhattan, KS, November 17, 1988


An Analysis Of Weaning Weight Records In Kansas Cowherds From 1968 To 1985, R.C Perry, D.D. Simms, L.R. Corah, D.J. Patterson Jan 1988

An Analysis Of Weaning Weight Records In Kansas Cowherds From 1968 To 1985, R.C Perry, D.D. Simms, L.R. Corah, D.J. Patterson

Kansas Agricultural Experiment Station Research Reports

A data set of 33,208 individual weaning records (1968-1985) from producers within Kansas was analyzed to determine factors influencing weaning weight. In determining the effect of calving sequence (21 day periods), only data from larger cowherds with records from at least 5 years were included (n=18,400). On the average, for every 21 days later a calf is born, there is a 22.8 lb decline in weaning weight. During the 17-year period that these records encompassed, there has been an average annual weaning weight increase of 4.6 lbs. This study suggests that factors influencing weaning weight in Kansas are age at …


Limit Versus Full Creep For Calves Grazing Late Summer Bluestem, B. Cochran, Gerry L. Kuhl, T. Delcurto, L. Corah, E. Vanzant Jan 1988

Limit Versus Full Creep For Calves Grazing Late Summer Bluestem, B. Cochran, Gerry L. Kuhl, T. Delcurto, L. Corah, E. Vanzant

Kansas Agricultural Experiment Station Research Reports

Limit-feeding a soybean meal/milo creep supplement (1696 crude protein, average 3.096 salt) was compared with ad libitum consumption of the same supplement without salt or with no supplementation. Little difference was evident in average daily gain of calves among treatments. However, poor supplement consumption may have affected results.


Comparison Of Feedlot Performance Of Steer Calves Produced By Angus X Hereford And Brahman X Hereford Cows, J.R. Brethour, D. Patterson, K. Olson, L. Corah Jan 1988

Comparison Of Feedlot Performance Of Steer Calves Produced By Angus X Hereford And Brahman X Hereford Cows, J.R. Brethour, D. Patterson, K. Olson, L. Corah

Kansas Agricultural Experiment Station Research Reports

Steer calves that were 75 percent Hereford and either 25 percent Angus (BWF) or Brahman (BRX) were compared in a feedlot study that involved either high-concentrate or high-silage finishing rations. The BRX steers gained significantly faster, but there was no concomitant response in feed efficiency. The ration energy utilization by BRX steers appeared to be less than that of BWF steers. Performance of both breeds was poorer on the high-silage ration than on the high-grain ration, and there was no breed by ration interaction. A greater proportion of BWF calves graded USDA choice, but there was little difference between breeds …