Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Hummel, Jürgen Prof. Dr."

Effect of carbohydrate composition of the diet and ruminal fluid passage on microbial transformations in the rumen

Pfau, Friederike (2024-02-09)

The aim of this study was to investigate certain effects on the microbial crude protein (MCP) production in the rumen and to investigate mechanisms which could promote the ruminal MCP yield to enhance the MCP supply to the ...

Assessing the relevance of fluid dilution rate for ruminal metabolism in cattle and sheep

Zhang, Xiaoyu (2023-06-07)

Ruminants evolved a forestomach in which plant materials are fermented with the help of ruminal symbiotic microbes. Ruminal microbes use the ingested materials to proliferate, and produce volatile fatty acids which are ...

Molekulargenetische und proteinanalytische Untersuchungen trächtigkeitsassoziierter Glykoproteine beim Rind

Krebs, Tony (2022-10-11)

The dissertation addresses molecular genetic and protein analytical studies of bo-vine pregnancy-associated glycoproteins (boPAGs) and their practical application as pregnancy markers. Bovine PAGs are expressed by trophoblast ...

Potential for Sustainable Poultry Production Based on Local Chicken Breeds and Regional Protein Plants

Nolte, Tanja (2022-03-22)

During the 20th century, poultry production evolved to a highly specific sector with special chicken lines for egg production on the one hand and meat production on the other. While of broilers both sexes can be used for ...

Advanced statistical modeling of complex traits related to subacute ruminal acidosis in dairy cows

Mensching, André (2021-05-17)

Adequate feeding of lactating cows is particularly challenging for high-performing animals. In this respect, subacute ruminal acidosis (SARA) is considered the most important nutritional disease. Its emergence is promoted ...

Pig tail biting in different farrowing and rearing systems with a focus on tail lesions, tail losses and activity monitoring

Gentz, Maria (2020-07-22)

Tail biting is a widespread behavioural disorder in modern pig housing systems. It is defined as an oral manipulation of a pig’s tail by another. Different types of tail biting are described throughout the literature which ...

Untersuchung exogener Einflüsse auf den Reproduktionserfolg des Rindes unter Anwendung von In-vitro-Verfahren

Diers, Sophie (2020-06-03)

This thesis deals with the analysis of various exogenous factors on the reproductive suc-cess of cattle by application of in vitro methods. Possible effects of semen type (conventional vs. female sexed) and calf ...

Identification of molecular-genetic causes for osteogenesis imperfecta, interdigital hyperplasia and ribosomopathies in cattle

Zhang, Xuying (2020-02-06)

Musculoskeletal anomalies are a heterogeneous group of fairly common, often with severe clinical symptoms, but mostly fatal disorders in human and animals. By far, complex vertebral malformation (CVM) and Brachyspina are ...

Molekulargenetische Analysen fortpflanzungsrelevanter Fragestellungen beim landwirtschaftlichen Nutztier

Wiedemann, Isabel (2018-12-04)

This dissertation addresses two topics that are relevant for the reproduction of live-stock. The first part of the thesis describes genetic and environmental factors influenc-ing sperm quality in ejaculates of artificial ...

Tube-Pellets als Alternative zur konventionellen Kryokonservierung

Schütt, Raphael Oliver (2018-07-17)

Since the introduction of the genomic selection, insemination centers are function with genomically proofed young bulls at the age of 10 months onwards (MELBAUM et al., 2016). Young bulls have a reduced ejaculate volume ...

Distribution of Mycobacterium avium subspecies paratuberculosis in clinically asymptomatic bulls and different non-ruminant species

Fechner, Kim (2017-09-07)

Paratuberculosis is a disease of global distribution, which mainly occurs in ruminants. The disease is triggered by Mycobacterium avium subsp. paratuberculosis (MAP), which causes a chronic, degenerative granulomatous ...