A5034588978- Ruminant Nutrition and Digestive Physiology
- Effects of Environmental Stressors on Livestock
- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Odor and Emission Control Technologies
- Meat and Animal Product Quality
- Animal Behavior and Welfare Studies
- Agriculture Sustainability and Environmental Impact
Institute of Livestock and Grassland Science
2021-2024
Tohoku University
2024
Abstract This study proposed a method for measuring the methane (CH 4 )/carbon dioxide (CO 2 ) ratio from individual beef cattle under on‐farm conditions and estimated variance components of CH /CO ratio. Gas measurements were conducted using 166 Japanese Black group‐housed in pens equipped with feed bins. The gas containing animal's breath was measured individually after concentrate feeding by covering bin sheet sampling inlets. Measurements performed six times (three consecutive days,...
The aim of this study was to develop prediction equations for methane (CH4 ) emissions from lactating cows using the CH4 /carbon dioxide (CO2 ratio in breath measured automatic milking system (AMS) and evaluate predicted values factors affecting /CO2 ratio. model development conducted a dataset determined respiration chambers or head boxes (n = 121). Then, gas measurements AMS as well box were carried out with six fed one three different levels neutral detergent fiber (NDF) content,...
This study aimed to develop a prediction equation for methane (CH4 ) emissions from fattening cattle based on the CH4 /carbon dioxide (CO2 ratio and validate predictive ability of developed equation. The was using /CO2 combined with oxygen consumption respiratory quotient estimations that were theoretically calculated relation between gas energy metabolism. To equation, measurements in headboxes conducted eight Japanese Black steers. compared two previously reported equations. As result,...
Abstract The purpose of this study was to investigate the carbon dioxide (CO 2 ) concentration in sampled gas avoid low breath while measuring methane (CH 4 )/CO ratio using sniffer method. This also assessed effect selective elimination by applying threshold CO CH /CO ratio. measurement automatic milking system conducted with 26 multiparous Holstein cows an electric fan manipulate gas. Four different thresholds background‐corrected concentrations (0, 0.025, 0.05, and 0.1%) were applied...
<title>Abstract</title> <bold>Background: </bold>Gastroenteric release of methane from livestock accounts for a substantial portion anthropogenic greenhouse gas emissions worldwide. Here, we examined the characteristics rumen microbiome and physiological resilience associated with production, breed characterized by enhanced intramuscular fat deposition. <bold>Results: </bold>Methane were measured during three phases: early (13 months), middle (20 late (28 liver transcriptome, blood...
Abstract This study investigated the physiological characteristics and carcass performance associated with residual methane emissions (RME), effects of bull differences on CH 4 ‐related traits in Japanese Black cattle. Enteric (CH ) from 156 cattle (111 heifers 45 steers) were measured during early fattening using sniffer method. Various parameters to clarify between high, middle, low RME groups. examined determine whether affected progeny emissions. Ruminal butyrate NH 3 concentrations...
Abstract We investigated the effect of fermentation quality corn silage on dry matter intake (DMI), milk yield, ruminal fermentation, methane (CH 4 ) emissions, and plasma metabolites in lactating cows. Six Holstein cows were used a 2 × crossover design with two dietary treatments containing high lower pH (high group) or low higher (low group). The fed partial mixed ration (PMR 50%DM each silage) ad libitum plus 0.7 kg/day concentrates at milking. DMI group (24.8 kg/day) tended to be ( p...