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A survey of relationships among rare breeds of swine
(University of Missouri--Columbia, 2014)
Swine production has evolved over the last century resulting in the loss of biodiversity among breeds utilized by commercial producers. Only a handful of breeds are used extensively by these producers, with many swine breeds facing extinction due...
The effect of early pregnancy and lactation on the growth of young breeding animals
(University of Missouri--Columbia, 1916)
The purpose of the investigation described in this thesis was to determine the effects of early breeding in swine. If breeding immature animals results in evil consequences, these bad results should be observed in one or more of three ways: (1...
The influence of breeding young swine upon the parents, the offspring and the breed
(University of Missouri--Columbia, 1913)
has long been known as a swine-producing country of surpassing excellence, and claims to produce and consume more pork than any other nation. Missouri alone, in 1907. sent to market 3,878,863 head of hogs valued at $38,788,630, and at that time...
A partial equilibrium model of the Chinese swine industry scenarios and comments
(University of Missouri--Columbia, 2020)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Using a partial equilibrium model of the Chinese swine industry, the author evaluates alternative recovery scenarios from the current African Swine Fever (ASF) outbreak in China...
Age as a factor in animal breeding
(University of Missouri--Columbia, 1912)
in Chapters I. and VII. were conducted. The remaining subject matter was taken from various sources, the chief being from data collected from the swine and poultry breeding investigations under way at this Station....
The value of in-breeding in the improvement of the domestic animals
(University of Missouri--Columbia, 1917)
In this paper I shall take the stand of a neutral, and all literature and available material of value upon the subject both for and against, will be studied with a view of determining our present knowledge of in-breeding in regard to the improvement...
Selection for placental efficiency in swine
(University of Missouri--Columbia, 2004)
with MTDFREML procedures. Breeding values were estimated (EBV) for individual BW (n = 2,111), PW (n = 2,006), PE (n = 1,677), and SI (n = 1,677). Direct heritability estimates were 0.03, 0.25, 0.18, 0.11 and 0.08 for BW, PW, PE, SI, and TB, respectively. Genetic...
Structure and organization comparisons of U.S. large volume swine producers : a national survey
(University of Missouri--Columbia, 1986)
) of feeder pigs were studied in detail concerning organization, breeding stock acquisition practices, and marketing practices. Many specialized producers of feeder pigs are farrowing corporations owned by a small group of pig finishers. Specialized finishers...
Approaches for alleviating toxic effects of aflatoxin in lactating dairy cows and weanling pigs
(University of Missouri--Columbia, 2010)
Aflatoxin (AF) is a mycotoxin found in feed ingredients used in livestock diets including dairy cattle and pigs. Aflatoxin causes reduced performance, liver damage, increased prevalence of infectious disease, and secretion ...
Effect of swine diets supplemented with magnesium sulfate and electroytes on pork quality
(University of Missouri--Columbia, 2007)
) as an environmental stressor. Duroc and Berkshire x Duroc market hogs were grouped by weight, sex and breed into one of four dietary treatments. The dietary treatments were: 1) control (corn/SBM based; 13.5% CP and 0.8% total lysine), 2) control + 3.2g...
Detecting estrus in sows using a robotic imaging system and neural networks
(University of Missouri--Columbia, 2023)
The global demand for pork products is expected to grow further with the growth of the population. Traditional swine farming presents disadvantages such as low breeding efficiency and high labor cost. Estrus detection is crucial to reproductive...
Risk reduction in financing large swine confinement systems
(University of Missouri--Columbia, 1977)
"The objectives of this study are: (1) To compare selected loan lengths and the resulting impact on a swine confinement system. (2) To observe the effects of different leverage ratios on a swine confinement system. (3) To compare annual cash flows...
Age as a factor in animal breeding
(University of Missouri--Columbia, 1911)
comprehensive nor far-reaching. Director F.B. Mumford of the Agricultural Experiment Station at the University of Missouri first conceived the idea of conducting an experiment for the determination of the proper age of animals for breeding. Unfortunately...
A study of the effect of the periods of gestation and lactation upon the growth and composition of swine
(University of Missouri--Columbia, 1915)
Growth is at the base of organic production. In recent years an increasing importance has been attached to its study and to the conditions affecting it. Davenport says: "The importance of the study of growth cannot be over ...
Transgenerational effects of in utero heat stress on reproduction in pigs
(University of Missouri--Columbia, 2017)
Seasonal infertility caused by high ambient temperatures and humidity during the summer months can have negative effects on the reproduction of female swine. These conditions may cause heat stress leading to large economic losses for swine producers...
Age as a factor in animal breeding
(University of Missouri--Columbia, 1918)
The experiment furnishing the basis for this discussion was begun in 1909 by Director F.B. Mumford and has since been continued under his general direction. Swine were used in the experiment since they probably lend themselves more readily than any...
Improving the value of pigs with severe combined immunodeficiency through novel transplantation
(University of Missouri--Columbia, 2023)
genetically modified swine models propelled them into biomedical relevance, as they are able to fill this necessary niche as a translational model. Pigs, including their organs and tissues, are more similar in size and physiology to humans than rodent models...
Improving viability of immunodeficient RAG2-/- pigs by non-specific porcine antibody administration
(University of Missouri--Columbia, 2020)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Immunodeficient swine models such as the RAG2-/- model, are valuable to the field of regenerative medicine; however, their utility would greatly benefit from increased longevity...
Estrus induction and maintenance of cycles in gilts with PG-600 and boar exposure
(University of Missouri--Columbia, 2007)
This study looked at the efficacy of PG-600 and boar exposure to induce and maintain cycles. Gilts received one of four treatments: PG-600, weekday 10 min full physical contact boar exposure (BE), PG-600+BE, and neither ...
Effects of heat stress on reproduction and productivity of primiparous sows and their piglets' performance
(University of Missouri--Columbia, 2009)
Heat stress (HS) produces seasonal infertility in sows and decreases reproductive efficiency. Sows were exposed to HS during a production cycle (gestation [gest], lactation [lact], and breeding) to examine productivity. First parity Landrace...