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Now showing items 41-60 of 185
To study the effect of pregnancy and of nursing on the maintenance requirement of mares
(University of Missouri--Columbia, 1916)
Abstract taken from three paragraphs of the Introduction to this thesis: A clear understanding of the main principles underlying the nutrition of farm animals has never been more important to the stock farmer than at the ...
Increasing methionine content of soybean using CRISPR/Cas9 and developing machine learning predictive models
(University of Missouri--Columbia, 2022)
, hence, is essential in all living organisms including plants. It is the most limiting amino acid and roughly US$100 million are spent annually by poultry and swine producers to supplement animal feed with Met. The leaching of Met supplements leads...
Adoption of nutrient management practices
(University of Missouri--Columbia, 2008)
Off-farm income has recently been incorporated into the analysis of technology adoption, due to its increasing share in total farm household income in the U.S. Previous studies, however, found inconsistent results with ...
The effects of elevated temperature on preimplantation-stage porcine embryos
(University of Missouri--Columbia, 2006)
It was the objective of these experiments to more fully characterize the biochemical and developmental responses of in vitro-produced preimplantation stage porcine embryos to elevated temperatures. In vitro fertilized (IVF) ...
Fine mapping and candidate gene identification of a soybean seed protein and oil QTL from a wild soybean accession and linkage analysis for whole plant biomass, carbon, nitrogen, and seed composition using a RIL mapping population
(University of Missouri--Columbia, 2021)
Soybean [Glycine max (L.) Merr] cultivars have low genetic variation due to domestication, founder events, and selection strategies for modern plant breeding. There is a need to introduce genetic diversity into soybean cultivars for long...
What is the meaning of livestock production for long-standing 4-H members? : a hermeneutic phenomenological study
(University of Missouri--Columbia, 2019)
Raising livestock for food production is a unique cultural phenomenon. It has been well documented that showing livestock as part of 4-H (a positive youth development program operating in 50 nations around the world) ...
Studies on contagious abortion
(University of Missouri--Columbia, 1918)
Text from Introduction: "This thesis includes a review of the more important literature relating to contagious abortion or infectious abortion that was available, and particularly that dealing with experimental researches ...
Evaluating pig performance, carcass merit and processed pork quality when chestnuts and acorns are fed to Duroc-influenced pig genetics during late finishing
(University of Missouri--Columbia, 2019)
The objective of this study was to determine effects of feeding chestnuts and acorns on growth performance, carcass quality and further processed products of Duroc/Duroc crossbred finishing barrows. Barrows (n = 30) were ...
The effects of various planes of nutrition upon the cost of maintenance, reproduction, and development of beef cows
(University of Missouri--Columbia, 1916)
The frequency with which valuable animals reproduce themselves has always been a factor of economic importance in the pure bred cattle business. Great economic changes during the last few years have made this an important ...
Elementary agriculture for city high schools
(University of Missouri--Columbia, 1913)
The experience of teaching Agriculture in the high school for a number of years has impressed upon the writer the need of a more careful selection of material than is indicated by most of the text book in Elementary ...
Winter rations for dairy heifers
(University of Missouri--Columbia, 1918)
"Comparatively little experimental data are as yet available concerning these problems of raising heifers. The purpose of the author in conducting the experiments reported in this thesis was to add to the data now available ...
Molecular approaches to improve soybean plant architecture and seed composition
(University of Missouri--Columbia, 2021)
yield, especially in high yield planting environments. Further agronomic merits need to be examined in diverse environments for its full utilization in soybean breeding. For the improvement of soybean seed composition, this research showed...
Effects of Artemisia afra and Artemisia absinthium on fertility of male mice exposed to increased ambient temperatures for 24 hours
(University of Missouri--Columbia, 2010)
Males exposed to elevated temperatures display a decrease in reproductive performance resulting in decreased profit for producers. The use of herbs to alleviate the effects of heat in tropical countries has been documented ...
A multi-scale investigation of ecologically relevant effects of agricultural runoff on amphibians
(University of Missouri--Columbia, 2008)
Modification of landscapes for agricultural production can introduce agrochemicals into surface waters and degrade aquatic habitats used by many amphibians for breeding and larval development. Although many ecotoxicological studies have shown...
Factors affecting the growth of dairy animals
(University of Missouri--Columbia, 1916)
Text from introduction: All successful breeders are continually striving to improve the quality of their herds. The value of any dairy herd is determined to a great extent by the way in which the heifers within that herd ...
Killing them with kindness: a meso-dialectical study of the conceptual formation of humane and inhumane in the no-kill animal shelter movement
(University of Missouri--Columbia, 2005)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This research begins with one question: What is humane about humane? In the context of the no-kill animal shelter movement this study examines the ...
Milk substitutes, powdered skimmilk for raising calves
(University of Missouri--Columbia, 1917)
Text from introduction: This thesis is a discussion, from the standpoint of our present knowledge of the fundamental principles of animal nutrition, of the possibility of raising calves on "milk substitutes". The experimental ...
Genetic and nutritional effects on reproduction in lactating dairy cows
(University of Missouri--Columbia, 2020)
for the observed phenotypic fertility differences between genotypes. The study has identified key physiological mechanisms controlled by genetic merit for fertility traits. These results highlight the ability of the Economic Breeding Index to deliver cows...
An analysis of aspartic peptidases expressed by trophoblasts and placenta of even-toed ungulates
(University of Missouri--Columbia, 2008)
in and around the catalytic center, and some of those that incurred mutations in the two catalytic aspartates are predicted to be proteolytically inactive. In contrast, most of the ancient PAGs of ruminants and swine, have all the hallmarks of typical aspartic...
Farm investment analysis--hand-calculated comparative budgeting and computerized five-year transitional budgeting
(University of Missouri--Columbia, 1974)
Tremendous capital investments required in today’s modern farming necessitate prudent planning of future investments. The object of this research was to provide a systematic means of analyzing profitability and cash flow ...