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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Perceptions And Management Of Ventenata By Producers In The Inland Pacific Northwest, Lisa Jones, John Wallace, Kathleen Painter, Pamela Pavek, Timothy S. Prather
Perceptions And Management Of Ventenata By Producers In The Inland Pacific Northwest, Lisa Jones, John Wallace, Kathleen Painter, Pamela Pavek, Timothy S. Prather
The Journal of Extension
Ventenata is an annual grass that has invaded agricultural and wildland settings in the Inland Pacific Northwest, causing economic and ecological losses. We know little about producers’ perceived risks and management of ventenata. We present results of surveys in 2011 and 2014 targeting producers across affected counties in Idaho and Washington. Awareness of ventenata and costs to producers increased across that time interval. Respondents attending ventenata Extension events adopted recommended management strategies more than those who did not attend. Our study documents the importance of continued integrated pest management research in concert with stakeholder engagement and education.
Quantifying The Leaching Of Nutrients And Metals In A Pasture Soil As Affected By Excreta Of Ruminants Fed Alternative Diets, Ian Kennedy
Graduate Theses and Dissertations
The leaching of nitrate through the soil profile and into adjacent water systems has been a leading cause of water pollution and results in the loss of a valuable nutrient from animal production systems. Forage-based animal production systems may be improved through manipulation of animal diets that incorporate tannins and total polyphenolic compounds with feed, increasing the amount of nitrogen (N) retained by an animal/decreasing rates of digestion and altering the N-containing compounds that are excreted and deposited onto soil. Incorporating the forage legumes sericea lespedeza (Lespedeza cuneate [Dumont de Courset] G. Don) and lablab (Lablab purpurues L.) into the …
On-Farm Qualitative Behaviour Assessment Of Dairy Goats In Different Housing Conditions, Lilia Grosso, Monica Battini, Françoise Wemelsfelder, Sara Barbieri, Michela Minero, Emanuela Dalla Costa, Silvana Mattiello
On-Farm Qualitative Behaviour Assessment Of Dairy Goats In Different Housing Conditions, Lilia Grosso, Monica Battini, Françoise Wemelsfelder, Sara Barbieri, Michela Minero, Emanuela Dalla Costa, Silvana Mattiello
Sentience Collection
This study reports the results of the first investigation on the use of Qualitative Behaviour Assessment (QBA) in dairy goats, using a fixed-list of descriptors specifically developed for this species. It aimed to verify whether QBA can be reliably used by observers with different backgrounds to differentiate between the emotional states of goats kept under different environmental conditions. Two trained observers simultaneously assessed 16 dairy goat farms (8 “Housed” (H) farms, where animals were observed in free stall pens, and 8 “Pasture” (P) farms, where animals were observed in open ranges), using a list of 16 QBA descriptors that were …
On-Farm Qualitative Behaviour Assessment Of Dairy Goats In Different Housing Conditions, Lilia Grosso, Monica Battini, Françoise Wemelsfelder, Sara Barbieri, Michela Minero, Emanuela Dalla Costa, Silvana Mattiello
On-Farm Qualitative Behaviour Assessment Of Dairy Goats In Different Housing Conditions, Lilia Grosso, Monica Battini, Françoise Wemelsfelder, Sara Barbieri, Michela Minero, Emanuela Dalla Costa, Silvana Mattiello
Françoise Wemelsfelder, PhD
This study reports the results of the first investigation on the use of Qualitative Behaviour Assessment (QBA) in dairy goats, using a fixed-list of descriptors specifically developed for this species. It aimed to verify whether QBA can be reliably used by observers with different backgrounds to differentiate between the emotional states of goats kept under different environmental conditions. Two trained observers simultaneously assessed 16 dairy goat farms (8 “Housed” (H) farms, where animals were observed in free stall pens, and 8 “Pasture” (P) farms, where animals were observed in open ranges), using a list of 16 QBA descriptors that were …
Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary
Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary
Housing and Confinement of Farm Animals Collection
The aim of the current study was to assess if cows preferred pasture or indoor housing, and how diurnal and environmental factors affected this preference. Lactating dairy cows (n = 5 groups, each containing 5 cows) were sequentially housed either in a free-stall barn on pasture, or given the choice between the 2 environments. Each group was tested 3 times under each condition, for a total of 21 d, to assess the effects of varying climatic conditions (outdoor temperature ranged from 9.9 to 28.2°C and daily rainfall from 0 to 65 mm/d over the course of the experiment). When provided …
Effect Of Restricted Access Time To Pasture On Dairy Cow Milk Production, Grazing Behavior, And Dry Matter Intake, E. Kennedy, M. Mcevoy, J. P. Murphy, M. O'Donovan
Effect Of Restricted Access Time To Pasture On Dairy Cow Milk Production, Grazing Behavior, And Dry Matter Intake, E. Kennedy, M. Mcevoy, J. P. Murphy, M. O'Donovan
Housing and Confinement of Farm Animals Collection
The objective of this experiment was to investigate the effect of restricting pasture access time on milk production and composition, body weight and body condition score change, dry matter intake, and grazing behavior of autumn calving dairy cows in midlactation. Fifty-two (19 primiparous and 33 multiparous) Holstein-Friesian dairy cows (mean calving date, August 17 ± 91.2 d) were randomly assigned to a 4-treatment (n = 13) randomized block design grazing study. The 4 grazing treatments were: (i) full-time access to pasture (22H; control), (ii) 9-h access to pasture (9H), (iii) two 4.5-h periods of access to pasture after both milkings …
The Tropical Forest And Fire Emissions Experiment: Trace Gases Emitted By Smoldering Logs And Dung From Deforestation And Pasture Fires In Brazil, Ted J. Christian, Robert J. Yokelson, Joao A. Carvahlo, David W. Griffith, Ernesto C. Alvarado, Jose C. Santos, Turibio Gomes Soares Neto, Carlos A. Gurgel Veras, Wei Min Hao
The Tropical Forest And Fire Emissions Experiment: Trace Gases Emitted By Smoldering Logs And Dung From Deforestation And Pasture Fires In Brazil, Ted J. Christian, Robert J. Yokelson, Joao A. Carvahlo, David W. Griffith, Ernesto C. Alvarado, Jose C. Santos, Turibio Gomes Soares Neto, Carlos A. Gurgel Veras, Wei Min Hao
Faculty of Science - Papers (Archive)
Earlier work showed that Amazonian biomass burning produces both lofted and initially unlofted emissions in large amounts. A mobile, Fourier transform infrared spectrometer (FTIR) measured the unlofted emissions of 17 trace gases from residual smoldering combustion (RSC) of logs as part of the Tropical Forest and Fire Emissions Experiment (TROFFEE) during the 2004 Amazonian dry season. The RSC emissions were highly variable and the few earlier RSC measurements lay near the high end of combustion efficiency observed in this study. Fuel consumption by RSC was ∼5% of total for a planned deforestation fire. Much regional RSC probably occurs in the …