Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Calving Season"”.
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An analysis of calving season strategies
Call number: LD2668 .T4 1986 N44
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An analysis of calving season strategies
Call number: LD2668 .T4 1986 N44
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Economic analyses of the effects of calving season on beef cow-calf-forage systems
Important implications of the study are: beef cow-calf production is competitive over a wide range of beef prices and it may increase farm returns to feed small amounts of corn silage rather than grow additional pasture even when the weaned steer calf-corn ratio is quite low.
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Analysis of early lactation reproductive characteristics in Holstein cows
… for older cattle was the lowest at 90 d prior to calving and changed the least amount over time, while youngest cattle had the highest initial BCS at d 90 prior to calving and had the greatest change in BCS over time. Body condition score was the highest during summer calving season (3.3 ± .06) …
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Modeling Greenhouse Gas Emissions and Net Return Implications for Cow-Calf Producers in the Ozark Highlands
… species composition, cow stocking rate, and seasonal calving distribution for three sizes of operations under four fertilization strategies.</p> <p>A spreadsheet-based model was developed at the University of Arkansas as part of this dissertation and an M.Sc thesis. It lends itself for …
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Relationships among heifer traits, early-life productive traits, and lifetime productivity within Angus and Simmental female cattle
… females with fertility in the first two breeding seasons, and with calf production in the first, in three and in eleven years of life. These traits were used to develop prediction equations for fertility using logistic regression methodology. For productive performance, three methodologies were …
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Population dynamics and demography of reindeer (Rangifer tarandus L.) on the East Iceland highland plateau 1940–2015 A comparative study of two herds
… over time; home ranges were smallest during the calving season, and largest during the hunting season for both herds. Travelling speed was higher in area 1 than area 2, but in general the two herds travelled shorter distances in summer than reindeer herds in Norway, most likely related to the …
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Evaluating long term benefits of genomic selection programs in beef cattle breeding programs in Western Canada
… repeated) were followed over 6 breeding and calving years to determine the association between sire performance over multiple years, number of calves sired, calf performance, and replacement heifer performance over multiple years. To evaluate sire performance and account for the different …
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The effects of protein supplementation on performance of beef cattle grazing native mixedgrass range in western Kansas
… BCS when compared to daily supplementation. As calving season nears, producers may wish to increase supplementation frequency. The responses to a change in supplementation frequency during the third trimester of gestation have not been widely investigated. Therefore, our objective in Study 1 was …