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https://www.readbyqxmd.com/read/29679833/the-contribution-of-cattle-urine-and-dung-to-nitrous-oxide-emissions-quantification-of-country-specific-emission-factors-and-implications-for-national-inventories
#1
D R Chadwick, L M Cardenas, M S Dhanoa, N Donovan, T Misselbrook, J R Williams, R E Thorman, K L McGeough, C J Watson, M Bell, S G Anthony, R M Rees
Urine patches and dung pats from grazing livestock create hotspots for production and emission of the greenhouse gas, nitrous oxide (N2 O), and represent a large proportion of total N2 O emissions in many national agricultural greenhouse gas inventories. As such, there is much interest in developing country specific N2 O emission factors (EFs) for excretal nitrogen (EF3, pasture, range and paddock) deposited during gazing. The aims of this study were to generate separate N2 O emissions data for cattle derived urine and dung, to provide an evidence base for the generation of a country specific EF for the UK from this nitrogen source...
April 18, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29679270/mutagenic-assessment-of-lithobates-catesbeianus-tadpoles-exposed-to-the-2-4-d-herbicide-in-a-simulated-realistic-scenario
#2
Carlos Mesak, Bruna de Oliveira Mendes, Raíssa de Oliveira Ferreira, Guilherme Malafaia
The aim of the current study is to assess possible erythrocyte mutagenic effects on Lithobates catesbeianus tadpoles exposed to water contaminated with 2,4-D. In order to do so, tadpoles were exposed to a predictive and environmentally relevant herbicide concentration (1.97 mg/L), which is likely to be found in lentic environments formed by superficial water runoffs in pasture areas where the herbicide was applied. The micronucleus test, as well as tests for other nuclear abnormalities, was conducted after 3, 5, and 9 days of exposure (d...
April 20, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29679202/tick-infestation-and-occurrence-of-anaplasma-phagocytophilum-and-piroplasms-in-cattle-in-the-republic-of-serbia
#3
Ana Vasić, Marion Nieder, Nemanja Zdravković, Jovan Bojkovski, Dejan Bugarski, Ivan Pavlović, Cornelia Silaghi
Ticks transmit important pathogens affecting cattle such as intracellular bacteria of the genus Anaplasma or protozoa of the order Piroplasmida. This study aimed at assessing tick species present on pastures and cattle and determining occurrence of the tick-borne pathogens Anaplasma phagocytophilum and Babesia spp. in cattle. During May and June 2013, ticks and EDTA blood were collected from 185 dairy cows at six locations in Serbia. Ticks were also collected directly from the pastures at four of these locations...
April 20, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29674023/evaluation-of-portable-near-infrared-spectroscopy-for-organic-milk-authentication
#4
Ningjing Liu, Hector Aya Parra, Annemieke Pustjens, Kasper Hettinga, Philippe Mongondry, Saskia M van Ruth
Organic products are vulnerable to fraud due to their premium price. Analytical methodology helps to manage the risk of fraud and due to the miniaturization of equipment, tests may nowadays even be rapidly applied on-site. The current study aimed to evaluate portable near infrared spectroscopy (NIRS) in combination with chemometrics to distinguish organic milk from other types of milk, and compare its performance with benchtop NIRS and fatty acid profiling by gas chromatography. The sample set included 37 organic retail milks and 50 non-organic retail milks (of which 36 conventional and 14 green 'pasture' milks)...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29669474/feeding-fodder-beet-beta-vulgaris-l-with-either-barley-straw-or-pasture-silage-to-non-lactating-dairy-cows
#5
G C Waghorn, K Collier, M Bryant, D Dalley
AIMS: To determine the suitability of diets containing either approximately 85% fodder beet (Beta vulgaris L.) with barley straw or 65% fodder beet with pasture silage when fed to non-lactating dairy cows by measuring intakes, digestibility, rumen function including microbial growth, and N excretion. METHODS: Holstein-Friesian cows fitted with permanent rumen fistulae were fed either 65% fodder beet with pasture silage (Silage; n=8) or 85% fodder beet with barley straw (Straw; n=8) in an indoor facility over a 9-day period, for measurement of intakes, digestibility, rumen function and urine production...
April 18, 2018: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/29668994/technical-note-comparing-four-techniques-for-estimating-desired-grass-species-composition-in-horse-pastures
#6
L B Kenny, D Ward, M G Robson, C A Williams
Many methods exist for estimating species composition, but few studies compare those useful in improved horse pastures. The objective of this study was to examine four techniques for estimating desirable forage species composition in two cool-season horse pastures based on prevalence estimates, repeatability, bias, and practicality, and to select a method for use in a subsequent grazing study. The techniques included Equine Pasture Evaluation Disc (EPED), Line Point Intercept with three transects of 50 observations each (LPI 3-50), LPI with five transects of 30 observations each (LPI 5-30), and Step Point (StPt)...
March 16, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29668133/helminth-eggs-as-parasitic-indicators-of-fecal-contamination-in-agricultural-irrigation-water-biosolids-soils-and-pastures
#7
María Claudia Campos, Milena Beltrán, Nancy Fuentes, Gerardo Moreno
INTRODUCTION: A very common practice in agriculture is the disposal of wastewater and biosolids from water treatment systems due to their high nutrient content, which substantially improves crop yields. However, the presence of pathogens of fecal origin creates a sanitary risk to farmers and consumers. OBJECTIVE: To determine the presence and concentration of helminth eggs in irrigation waters, biosolids, agricultural soils, and pastures. MATERIALS AND METHODS: Water, biosolids, soil, and pasture samples were collected and analyzed for helminth egg detection, total eggs and viable eggs counts...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29665544/impacts-of-land-use-and-land-cover-change-on-stream-hydrochemistry-in-the-cerrado-and-amazon-biomes
#8
Rodolfo L B Nóbrega, Alphonce C Guzha, Gabriele Lamparter, Ricardo S S Amorim, Eduardo G Couto, Harold J Hughes, Hermann F Jungkunst, Gerhard Gerold
Studies on the impacts of land-use and land-cover change on stream hydrochemistry in active deforestation zones of the Amazon agricultural frontier are limited and have often used low-temporal-resolution datasets. Moreover, these impacts are not concurrently assessed in well-established agricultural areas and new deforestations hotspots. We aimed to identify these impacts using an experimental setup to collect high-temporal-resolution hydrological and hydrochemical data in two pairs of low-order streams in catchments under contrasting land use and land cover (native vegetation vs...
April 14, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29665157/pasture-intensification-is-insufficient-to-relieve-pressure-on-conservation-priority-areas-in-open-agricultural-markets
#9
Ulrich Kreidenweis, Florian Humpenöder, Laura Kehoe, Tobias Kuemmerle, Benjamin Leon Bodirsky, Hermann Lotze-Campen, Alexander Popp
Agricultural expansion is a leading driver of biodiversity loss across the world, but little is known on how future land-use change may encroach on remaining natural vegetation. This uncertainty is, in part, due to unknown levels of future agricultural intensification and international trade. Using an economic land-use model, we assessed potential future losses of natural vegetation with a focus on how these may threaten biodiversity hotspots and intact forest landscapes. We analysed agricultural expansion under proactive and reactive biodiversity protection scenarios, and for different rates of pasture intensification...
April 17, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29665014/stable-isotopic-evidence-for-land-use-patterns-in-the-middle-euphrates-valley-syria
#10
Arkadiusz Sołtysiak, Holger Schutkowski
OBJECTIVES: Stable carbon and nitrogen isotope ratios (δ13 C and δ15 N) were used to reconstruct the history of subsistence strategies in the middle Euphrates valley, NE Syria, in six temporal subsets dating from the Early Bronze Age (c. 2300 BCE) to the Modern period (19th/20th century CE). The study aims to demonstrate that changes in political and social organization over time, for which the archaeological record suggests different goals of land use and modes of production, register through dietary patterns that are reflected in isotopic data...
April 17, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29662884/transmission-of-helminths-between-species-of-ruminants-in-austria-appears-more-likely-to-occur-than-generally-assumed
#11
Jakob Winter, Steffen Rehbein, Anja Joachim
Helminth infections of the gastrointestinal tract and lungs can lead to devastating economical losses to the pastoral based animal production. Farm animals can suffer from malnutrition, tissue damage, and blood loss resulting in impaired production traits and reproduction parameters. In Austria, pastures grazed by sheep, goats, and cattle overlap with the habitats of several species of wild cervids (roe deer, red deer, sika deer, and fallow deer) and bovids (mouflon, chamois, and ibex), and transmission of parasites between different ruminant species seems likely...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29657001/accuracy-of-a-diagnostic-model-based-on-serum-biochemical-parameters-in-detecting-cows-at-an-increased-risk-of-chronic-fascioliasis
#12
Sławomir J Kowalczyk, Michał Czopowicz, Corinna N Weber, Elisabeth Müller, Jarosław Kaba
In adult cattle Fasciola hepatica infection usually follows a chronic subclinical course, and reduces both the milk yield and milk quality, resulting in considerable financial losses. Effective control of the disease is based on reliable identification of asymptomatically infected individuals, which now requires special parasitological or serological diagnostic tests. It is also known that F. hepatica infection induces alterations in some serum biochemical parameters. Therefore, the study was conducted to develop a model based on serum biochemical parameters allowing to identify cows at higher risk of chronic fascioliasis...
April 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29656993/anthelmintic-resistance-in-goat-herds-in-vivo-versus-in-vitro-detection-methods
#13
M Babják, A Königová, M Urda Dolinská, J Vadlejch, M Várady
Anthelmintic resistance (AR) is a serious threat to animal health and has a major economic impact worldwide due to production and financial losses. The aim of this study was to determine the occurrence of AR on 30 goat farms in Slovakia during the pasturing seasons and to compare three widely used in vitro and in vivo methods for detecting AR in field conditions. A three-year survey was conducted during the pasturing seasons of 2014-2016. Goats on each farm were split into treated and control groups and were treated by recommended (5 mg/kg body weight) and double doses (10 mg/kg b...
April 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29656341/environmental-factors-that-influence-milk-production-of-pantaneiro-ewes-and-the-weight-gain-of-their-lambs-during-the-pre-weaning-period
#14
M L Longo, F M Vargas Junior, K Cansian, M R Souza, P C Burim, A L A Silva, C M Costa, L O Seno
The main objective of this research was to conduct an exploratory study of the lactation curve in order to characterize the productive potential of Pantaneiro ewes and lambs. Fifty ewes were bred using four rams in two different mating seasons. The ewes were kept with their lambs on pasture of Brachiaria brizantha. Ewe body score, ewe weight, and lamb weight were evaluated. Milk sampling was performed every week. In the morning for milk collections, the ewes were treated with 1 UI of oxytocin (intramuscular) for complete milking...
April 14, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29650058/roles-of-instrumented-farm-scale-trials-in-trade-off-assessments-of-pasture-based-ruminant-production-systems
#15
T Takahashi, P Harris, M S A Blackwell, L M Cardenas, A L Collins, J A J Dungait, J M B Hawkins, T H Misselbrook, G A McAuliffe, J N McFadzean, P J Murray, R J Orr, M J Rivero, L Wu, M R F Lee
For livestock production systems to play a positive role in global food security, the balance between their benefits and disbenefits to society must be appropriately managed. Based on the evidence provided by field-scale randomised controlled trials around the world, this debate has traditionally centred on the concept of economic-environmental trade-offs, of which existence is theoretically assured when resource allocation is perfect on the farm. Recent research conducted on commercial farms indicates, however, that the economic-environmental nexus is not nearly as straightforward in the real world, with environmental performances of enterprises often positively correlated with their economic profitability...
April 13, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29650055/a-combined-effort-to-avoid-strongyle-infection-in-horses-in-an-oceanic-climate-region-rotational-grazing-and-parasiticidal-fungi
#16
José Ángel Hernández, Rita Sánchez-Andrade, Cristiana Filipa Cazapal-Monteiro, Fabián Leonardo Arroyo, Jaime Manuel Sanchís, Adolfo Paz-Silva, María Sol Arias
BACKGROUND: An approach to preventing strongyle infection in horses was tested, comprising rotational pasturing and the administration of spores of two parasiticidal fungi, Mucor circinelloides and Duddingtonia flagrans. METHODS: Twenty-two adult Spanish Sport Horses were dewormed with ivermectin (1 mg pour-on/kg body weight) and then randomly divided into three groups. G-1 was maintained with continuous grazing, and G-2 and G-3 were kept on a four-paddock rotation system...
April 12, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29648805/land-use-intensity-specific-global-characterization-factors-to-assess-product-biodiversity-footprints
#17
Abhishek Chaudhary, Thomas M Brooks
The UNEP-SETAC life cycle initiative recently recommended use of the countryside species-area relationship (SAR) model to calculate the characterization factors (CFs; potential species loss per m2 ) for projecting the biodiversity impact of land use associated with a products' life cycle. However, CFs based on this approach are to date available for only six broad land use types without differentiating between their management intensities and have large uncertainties that limit their practical applicability...
April 19, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29644603/assessment-of-intake-of-copper-and-lead-by-sheep-grazing-on-a-shooting-range-for-small-arms-a-case-study
#18
Ida Vaa Johnsen, Espen Mariussen, Øyvind Voie
The Norwegian Armed Forces' shooting ranges contain contamination by metals such as lead (Pb) and copper (Cu) and are often used as grazing pastures for livestock. To determine whether the sheep were at risk from grazing at a shooting range in Nord-Trøndelag (the Leksdalen shooting field), a study was conducted wherein the aim was to determine the amount of soil the sheep were eating, the accumulation of Cu and Pb in the livers of lambs grazing on the shooting ranges, and the accumulation of Pb and Cu in the grass...
April 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29642662/current-situation-and-future-prospects-for-the-australian-beef-industry
#19
Paul Leo Greenwood, Drewe M Ferguson
Beef production extends over almost half of Australia, with about 47,000 cattle producers that contribute about 20% ($A12.7 billion GVP) of the total value of farm production in Australia. Australia is one of the world's most efficient producers of cattle and was the world's third largest beef exporter in 2016. The Australian beef industry had 25 million head of cattle in 2016-17, with a national beef breeding herd of 11.5 million head. Australian beef production includes pasture based cow-calf systems, a backgrounding or grow-out period on pasture, and feedlot or pasture finishing...
April 12, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29642378/pasture-feeding-changes-the-bovine-rumen-and-milk-metabolome
#20
Tom F O'Callaghan, Rosa Vázquez-Fresno, Arnau Serra-Cayuela, Edison Dong, Rupasri Mandal, Deirdre Hennessy, Stephen McAuliffe, Pat Dillon, David S Wishart, Catherine Stanton, R Paul Ross
The purpose of this study was to examine the effects of two pasture feeding systems-perennial ryegrass (GRS) and perennial ryegrass and white clover (CLV)-and an indoor total mixed ration (TMR) system on the (a) rumen microbiome; (b) rumen fluid and milk metabolome; and (c) to assess the potential to distinguish milk from different feeding systems by their respective metabolomes. Rumen fluid was collected from nine rumen cannulated cows under the different feeding systems in early, mid and late lactation, and raw milk samples were collected from ten non-cannulated cows in mid-lactation from each of the feeding systems...
April 6, 2018: Metabolites
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