title: Parenteral treatment of clinical mastitis with tylosin base or penethamate hydriodide in dairy cattle

authors: McDougall, S.

subjects: mastitis

abstract: The objective of this study was to compare the clinical and bacteriological cure rates of cows with clinical mastitis following treatment with either tylosin base (5 g injected 3 times at 24-h intervals; n = 306) or penethamate hydriodide (5 g injected 3 times at 24-h intervals; n = 289). Duplicate milk samples were collected before treatment and again 14 ± 3 and 21 ± 3 d later for microbiological analysis. Only those quarters from which gram-positive mastitis pathogens were isolated before treatment were included in the analyses. Streptococcus uberis was the most prevalent isolate. The number of cows with clinical failure (i.e., retreated within 21 d of enrollment) did not differ between treatments (64 vs. 63, respectively). At the quarter level, there was no difference in the proportion of bacteriological cure between treatments (81.2 vs. 83.8% for penethamate hydriodide or tylosin, respectively). The proportions of clinical and bacteriological cure were influenced by age, herd, severity of mastitis, number of glands within the cow with clinical mastitis, bacterial species, and days postpartum at enrollment. There was no difference between treatment groups for SCC (4.46 vs. 4.44 ± 0.08, mean ± standard error of the difference in ln SCC for cows treated with penethamate hydriodide or tylosin, respectively) or production of milk solids (1.45 vs. 1.48 ± 0.02 kg/d of milk fat + protein, for the penethamate hydriodide or tylosin treatment, respectively). Overall, there was no difference in the proportions of clinical failure (17.3 vs. 16.5% of cows treated with penethamate hydriodide or tylosin, respectively) or bacteriological cure (79.8 vs. 82.0% of cows treated with penethamate hydriodide or tylosin, respectively), or in SCC or milk production between dairy cows with clinical mastitis and those treated for clinical mastitis with 1 of 2 parenteral antibiotic therapies.

text: Parenteral treatment of clinical mastitis with tylosin base or penethamate hydriodide in dairy cattle The objective of this study was to compare the clinical and bacteriological cure rates of cows with clinical mastitis following treatment with either tylosin base (5 g injected 3 times at 24-h intervals; n = 306) or penethamate hydriodide (5 g injected 3 times at 24-h intervals; n = 289). Duplicate milk samples were collected before treatment and again 14 ± 3 and 21 ± 3 d later for microbiological analysis. Only those quarters from which gram-positive mastitis pathogens were isolated before treatment were included in the analyses. Streptococcus uberis was the most prevalent isolate. The number of cows with clinical failure (i.e., retreated within 21 d of enrollment) did not differ between treatments (64 vs. 63, respectively). At the quarter level, there was no difference in the proportion of bacteriological cure between treatments (81.2 vs. 83.8% for penethamate hydriodide or tylosin, respectively). The proportions of clinical and bacteriological cure were influenced by age, herd, severity of mastitis, number of glands within the cow with clinical mastitis, bacterial species, and days postpartum at enrollment. There was no difference between treatment groups for SCC (4.46 vs. 4.44 ± 0.08, mean ± standard error of the difference in ln SCC for cows treated with penethamate hydriodide or tylosin, respectively) or production of milk solids (1.45 vs. 1.48 ± 0.02 kg/d of milk fat + protein, for the penethamate hydriodide or tylosin treatment, respectively). Overall, there was no difference in the proportions of clinical failure (17.3 vs. 16.5% of cows treated with penethamate hydriodide or tylosin, respectively) or bacteriological cure (79.8 vs. 82.0% of cows treated with penethamate hydriodide or tylosin, respectively), or in SCC or milk production between dairy cows with clinical mastitis and those treated for clinical mastitis with 1 of 2 parenteral antibiotic therapies.

year: 2008

title: A thesis on green finance

authors: Xu, Danyang

subjects: Green finance

abstract: In recent years, green finance has received considerable attention as a key tool for addressing climate change and achieving global sustainable development. It plays a critical role in driving the global transition to a green economy, achieving carbon neutrality targets and advancing environmental governance. This thesis provides an in-depth exploration of the dynamic connectedness of green financial markets and their complex interactions with various types of risks, aiming to comprehensively understand their characteristics and behaviors under different market conditions. First, using advanced econometric techniques such as the Time-Varying Parameter Vector Autoregressive (TVP-VAR) model and wavelet analysis, the study reveals the relationships between green financial markets and key driving risks, including financial and climate risks, in the time and frequency domain. Second, the thesis investigates the connectedness mechanisms between green bond markets in the United States and China and other financial markets. The analyses also reveal the intrinsic nature of the two major green bond markets. Finally, the thesis examines the dynamic relationships between key environmental, social, and governance (ESG) markets and other sources of uncertainty. 
The findings reveal that financial risks are the primary drivers of connectedness in green financial markets, with significant impacts on long-term return connectedness, whereas climate risks, particularly physical climate risks, have pronounced short-term effects on volatility connectedness. Furthermore, this thesis highlights the different roles of US and Chinese green bonds in responding to financial crises and geopolitical conflicts (e.g., the COVID-19 pandemic and the Russia-Ukraine conflict). Green bonds in the US have demonstrated stable hedging capabilities, while Chinese green bonds have shown strong market resilience, driven by economic transition and policy support. The analysis of ESG investment markets shows that European markets dominate the global green financial system, characterized by high returns and strong risk mitigation capabilities, while ESG assets in emerging markets are more constrained by regional economic and policy environments. In addition, this thesis explores the potential of optimal portfolio strategies of green financial assets in risk diversification and asset allocation, with green bonds and ESG assets being particularly important in times of crisis. 
This work not only contributes to the theoretical understanding of the dynamic characteristics of green financial markets, but also provides practical insights for policymakers in designing effective green financial policies and for investors in optimizing asset allocation. By revealing the dynamic linkages of green financial markets, this study provides crucial empirical evidence and decision-making support for the sustainable development of global green financial markets. The findings of the thesis lay a solid foundation for future research on green finance and suggest novel solutions to address global climate change challenges and promote sustainable economic development.

text: A thesis on green finance In recent years, green finance has received considerable attention as a key tool for addressing climate change and achieving global sustainable development. It plays a critical role in driving the global transition to a green economy, achieving carbon neutrality targets and advancing environmental governance. This thesis provides an in-depth exploration of the dynamic connectedness of green financial markets and their complex interactions with various types of risks, aiming to comprehensively understand their characteristics and behaviors under different market conditions. First, using advanced econometric techniques such as the Time-Varying Parameter Vector Autoregressive (TVP-VAR) model and wavelet analysis, the study reveals the relationships between green financial markets and key driving risks, including financial and climate risks, in the time and frequency domain. Second, the thesis investigates the connectedness mechanisms between green bond markets in the United States and China and other financial markets. The analyses also reveal the intrinsic nature of the two major green bond markets. Finally, the thesis examines the dynamic relationships between key environmental, social, and governance (ESG) markets and other sources of uncertainty. 
The findings reveal that financial risks are the primary drivers of connectedness in green financial markets, with significant impacts on long-term return connectedness, whereas climate risks, particularly physical climate risks, have pronounced short-term effects on volatility connectedness. Furthermore, this thesis highlights the different roles of US and Chinese green bonds in responding to financial crises and geopolitical conflicts (e.g., the COVID-19 pandemic and the Russia-Ukraine conflict). Green bonds in the US have demonstrated stable hedging capabilities, while Chinese green bonds have shown strong market resilience, driven by economic transition and policy support. The analysis of ESG investment markets shows that European markets dominate the global green financial system, characterized by high returns and strong risk mitigation capabilities, while ESG assets in emerging markets are more constrained by regional economic and policy environments. In addition, this thesis explores the potential of optimal portfolio strategies of green financial assets in risk diversification and asset allocation, with green bonds and ESG assets being particularly important in times of crisis. 
This work not only contributes to the theoretical understanding of the dynamic characteristics of green financial markets, but also provides practical insights for policymakers in designing effective green financial policies and for investors in optimizing asset allocation. By revealing the dynamic linkages of green financial markets, this study provides crucial empirical evidence and decision-making support for the sustainable development of global green financial markets. The findings of the thesis lay a solid foundation for future research on green finance and suggest novel solutions to address global climate change challenges and promote sustainable economic development.

year: 2025-06-09

title: Ngā Whanaketanga: Minimising contradictions and maximising opportunities for teacher learning.

authors: Hohepa, Margie Kahukura

subjects: Māori medium teacher professional development

abstract: In 2010 the assessment of student progress and achievement against National Standards became mandatory in English medium schooling in Aotearoa New Zealand. In that same year information gathering and revision work was carried out on the then draft Whanaketanga, developed in 2009. The Whanaketanga are deemed to be the equivalent to National Standards for classrooms implementing Te Marautanga o Aotearoa, the curriculum for immersion Māori medium settings. The information gathering and revision work was carried out in readiness for mandatory implementation of the Whanaketanga in 2011. The work also provided important opportunities for Māori medium teacher professional learning and development. The introduction of National Standards has been controversial. The development of Whanaketanga has also been controversial and challenging in nature. The first half of this paper provides an overview of Whanaketanga development and the challenges its developers worked hard to address. The second part discusses implications for Māori medium teacher professional learning and development, drawn from findings from research case studies of the information gathering and revision work.

text: Ngā Whanaketanga: Minimising contradictions and maximising opportunities for teacher learning. In 2010 the assessment of student progress and achievement against National Standards became mandatory in English medium schooling in Aotearoa New Zealand. In that same year information gathering and revision work was carried out on the then draft Whanaketanga, developed in 2009. The Whanaketanga are deemed to be the equivalent to National Standards for classrooms implementing Te Marautanga o Aotearoa, the curriculum for immersion Māori medium settings. The information gathering and revision work was carried out in readiness for mandatory implementation of the Whanaketanga in 2011. The work also provided important opportunities for Māori medium teacher professional learning and development. The introduction of National Standards has been controversial. The development of Whanaketanga has also been controversial and challenging in nature. The first half of this paper provides an overview of Whanaketanga development and the challenges its developers worked hard to address. The second part discusses implications for Māori medium teacher professional learning and development, drawn from findings from research case studies of the information gathering and revision work.

year: 2012