Research Repository

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Comparison of methods for monitoring the body condition of dairy cows (2018)
Journal Article
Bell, M. J., Maak, M., Sorley, M., & Proud, R. (2018). Comparison of methods for monitoring the body condition of dairy cows. Frontiers in Sustainable Food Systems, 2, doi:10.3389/fsufs.2018.00080

Dairy cows are known to mobilize body fat to achieve their genetic potential for milk production, which can have a detrimental impact on the health, fertility and survival of the cow. Better monitoring of cows with poor body condition (low or high bo... Read More

The use of mobile near-infrared spectroscopy for real-time pasture management (2018)
Journal Article
Bell, M. J., Mereu, L., & Davis, J. (2018). The use of mobile near-infrared spectroscopy for real-time pasture management. Frontiers in Sustainable Food Systems, 2, doi:10.3389/fsufs.2018.00076

Changes in pasture nutrients over the growing season are typically not monitored but doing so may help farmers improve how effectively they utilize forage. The aim of this research was to assess the use of real-time near-infrared spectroscopy (NIRS)... Read More

Measuring enteric methane emissions from individual ruminant animals in their natural environment (2018)
Book
N. Shurpali, A. K. Agarwal, & V. Srivastava (Eds.), (2019). Measuring enteric methane emissions from individual ruminant animals in their natural environment. doi:10.1007/978-981-13-3272-2_8

Ruminant livestock are an important source of meat, milk, fiber, and labor for humans. The process by which ruminants digest plant material through rumen fermentation into useful product results in the loss of energy in the form of methane gas from c... Read More

Novel monitoring systems to obtain dairy cattle phenotypes associated with sustainable production (2018)
Journal Article
Bell, M. J., & Tzimiropoulos, G. (2018). Novel monitoring systems to obtain dairy cattle phenotypes associated with sustainable production. doi:10.3389/fsufs.2018.00031. ISSN 2571-581X

Improvements in production efficiencies and profitability of products from cattle are of great interest to farmers. Furthermore, improvements in production efficiencies associated with feed utilization and fitness traits have also been shown to reduc... Read More

Effect of feeding system on enteric methane emissions from individual dairy cows on commercial farms (2018)
Journal Article
Eckert, M., Bell, M., Potterton, S., Craigon, J., Saunders, N., Wilcox, R., …Garnsworthy, P. (2018). Effect of feeding system on enteric methane emissions from individual dairy cows on commercial farms. Land, 7(1), doi:10.3390/land7010026

This study investigated the effects of feeding system on diurnal enteric methane (CH4) emissions from individual cows on commercial farms. Data were obtained from 830 cows across 12 farms, and data collated included production records, CH4 measuremen... Read More

Does the diurnal pattern of enteric methane emissions from dairy cows change over time? (2018)
Journal Article
Bell, M., Craigon, J., Saunders, N., Goodman, J., & Garnsworthy, P. (2018). Does the diurnal pattern of enteric methane emissions from dairy cows change over time?. animal, 12(10), 2065-2070. doi:10.1017/S1751731118000228

Diet manipulation and genetic selection are two important mitigation strategies for reducing enteric methane (CH4) emissions from ruminant livestock. The aim of this study was to assess whether the diurnal pattern of CH4 emissions from individual dai... Read More

Estimated differences in economic and environmental performance of forage-based dairy herds across the UK (2018)
Journal Article
Bell, M. J., & Wilson, P. (in press). Estimated differences in economic and environmental performance of forage-based dairy herds across the UK. Food and Energy Security, doi:10.1002/fes3.127. ISSN 2048-3694

Differences in performance among the areas of England, Scotland, Wales and Northern Ireland can provide some insight into the resilience of UK milk supplies from forage-based dairy herds. This study used a Markov Chain approach to model the average h... Read More

The impact of genetic selection on greenhouse-gas emissions in Australian dairy cattle (2017)
Journal Article
Pryce, J., & Bell, M. J. (in press). The impact of genetic selection on greenhouse-gas emissions in Australian dairy cattle. Animal Production Science, doi:10.1071/AN16510. ISSN 1836-0939

In Australia, dairy cattle account for ~12% of the nation’s agricultural greenhouse-gas (GHG) emissions. Genetic selection has had a positive impact, reducing GHG emissions from dairy systems mainly due to increased production per cow, which has led... Read More

Modelling the effect of diet composition on enteric methane emissions across sheep, beef cattle and dairy cows (2016)
Journal Article
Bell, M. J., Eckard, R., Moate, P. J., & Yan, T. (2016). Modelling the effect of diet composition on enteric methane emissions across sheep, beef cattle and dairy cows. Animals, 6(9), doi:10.3390/ani6090054. ISSN 2076-2615

Enteric methane (CH4) is a by-product from fermentation of feed consumed by ruminants, which represents a nutritional loss and is also considered a contributor to climate change. The aim of this research was to use individual animal data from 17 publ... Read More

Variation in enteric methane emissions among cows on commercial dairy farms (2014)
Journal Article
Bell, M. J., Potterton, S., Craigon, J., Saunders, N., Wilcox, R., Hunter, M., …Garnsworthy, P. (2014). Variation in enteric methane emissions among cows on commercial dairy farms. animal, 8(9), doi:10.1017/S1751731114001530. ISSN 1751-7311

Methane (CH4) emissions by dairy cows vary with feed intake and diet composition. Even when fed on the same diet at the same intake, however, variation between cows in CH4 emissions can be substantial. The extent of variation in CH4 emissions among d... Read More

A comparison of the economic value for enteric methane emissions with other biological traits associated with dairy cows
Journal Article
Bell, M. J., Pryce, J., & Wilson, P. (in press). A comparison of the economic value for enteric methane emissions with other biological traits associated with dairy cows. doi:10.21694/2379-1047.16002. ISSN 2378-9018

This is the first study to derive the economic value of enteric methane produced by a ruminant animal. There is considerable interest globally in selecting for low methane-emitting ruminant livestock, as methane is a potent greenhouse gas. However, b... Read More