Effect of ambient temperature on losses of volatile nitrogen compounds from stored laying hen manure

Pratt, E. V.; Rose, S.P.; Keeling, A.A.

doi:10.1016/s0960-8524(02)00011-1

Cited by 23 publications

(23 citation statements)

References 4 publications

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“…Uric acid also has a positive effect on ammonia volatilization 75 . Moisture concentration in manure, which can be changed by YSE 52 , is linked to the transformation of decomposition of uric acid directly 76 .…”

Section: Gas Mitigation Mechanisms Of Monogastric Animalsmentioning

confidence: 99%

Effects of Yucca schidigera on gas mitigation in livestock production: A review

Sun

Xiao

Shi

et al. 2017

Braz. arch. biol. technol.

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Section: Gas Mitigation Mechanisms Of Monogastric Animalsmentioning

confidence: 99%

Effects of Yucca schidigera on gas mitigation in livestock production: A review

Sun

Xiao

Shi

et al. 2017

Braz. arch. biol. technol.

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“…It also determined the magnitude of deviation from the set point temperature, affecting the ventilation, indoor temperature, RH and moisture content in manure as a result. Although indoor temperature remained quite constant (Morgan et al, 2014), higher outside temperature was still followed by higher inside temperatures, resulting in enhanced biological and physical activities related to elevated NH3 generation and release Pratt et al, 2002;Kaasik and Maasikmets, 2013). A slight increase of temperature of 1 -2°C could have significant effects on NH3 concentration in the intensive housing (Elliott and Collins, 1982).…”

Section: Outdoor and Indoor Environmentsmentioning

confidence: 99%

Modeling of Dynamic Ammonia Concentrations in Two Commercial Layer Hen Houses

Liu¹,

Ni²,

Heber³

et al. 2016

J ENVIRON INFORM

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Ammonia (NH3) concentrations in confined layer hen houses are the highest among buildings of different animal species and are of great concern to indoor air quality and animal welfare. However, little has been done to investigate the dynamic relationships between NH3 concentrations and the influencing factors. A Distributed Lag Non-linear Model was applied to study the dynamics of NH3 in two high-rise layer houses using a two-year dataset, compiled with hourly data, and its two subsets of summer and winter. Three major influencing factors, the ventilation rate, outdoor temperature, and outdoor relative humidity, were identified to have lagged effects on indoor NH3 concentrations in both houses. The duration of lagged effects of ventilation rate ranged from non-observable (<1 h) to a few subsequent hours. However, in winter, the changes in ventilation rates within the low operational ranges were not sufficiently high to induce NH3 concentration changes. The effects of temperature were not observable in winter. Higher outdoor relative humidity was related to elevated NH3 concentrations in winter, with a lag time of about 1 h in both houses. The lagged effects were considerably different between summer and winter for all three influencing factors.

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“…It has been suggested that competition for nutrients between Salmonella and large numbers of indigenous microorganisms in manure slurry , limitation of organic nutrients (Jones et al, 1977;Tiquia et al, 1998;, increased pH (Turnbull and Snoeyenbos, 1973;Kovacs and Tamasi, 1979) and the accumulation of free ammonia in manure during storage (Himathongkham et al, 2000) accelerate the decline in Salmonella numbers with time. In addition to increased free ammonia generation (Panetta et al, 2005) and loss of nitrogen (Pratt et al, 2002) which occurred at higher storage temperatures, the natural microflora became more robust at warmer temperatures (Platz, 1980) and successfully competed with inoculated Salmonella. Hence, it was not surprising to find the largest decline in Salmonella viability in manure stored at the higher temperature (37 8C).…”

Section: Salmonella Survival In Manure Slurrymentioning

confidence: 99%