Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
49
datasets available to search
ShareScore release 0.9.0
Dataset results
49 results for “Feed efficiency”
Smartcow EU project database on feed efficiency in beef cattle and analysis of natural 15N abundance and plasma urea concentration
<p>This is a database built in the frame of the Smartcow H2020 Eu project (N°730924) and gathering individual raw data for animal performances obtained in thirteen beef cattle trials conducted in France, UK and Switzerland as well as animal values for two biomakers of feed efficiency : the natural 15N abundance in animal proteins (plasma or muscle) and plasma urea concentration. </p>
Figure 1. (a) Classical set and (b) Fuzzy set 2.3.-An Efficient Expert System Generator for Qualitative Feed-Back Loop Analysis
<p>A membership function is a curve that represents the degree of points which belong to the<br> specific fuzzy variable. Selecting the appropriate membership function plays an essential rule in<br> design of a fuzzy logic controller. The shape of membership function could be defined based on the<br> simplicity, convenience, speed and efficiency. Many different membership functions are introduced<br> in the literatures such as triangular, trapezoidal and Gaussian. The membership function which<br> represented in figure 1(b) is a trapezoidal type.</p>
Figure 2. Causal loop diagram for the problem situation-An Efficient Expert System Generator for Qualitative Feed-Back Loop Analysis
<p>The problem situation could be represented in the following form of a causal loop diagram<br> as shown in Figure 2.</p>
Dataset including records from the first two generation of selection for feed efficiency in three rabbits lines
<p>This dataset include records from the first two generation of selection of three rabbit lines. The objective was to improve feed efficiency accounting for social interactions within cage. In two lines the feed intake control is done using an electronic feeder, and in the third feed intake is controled at cage level. In the excel book provided, the date from the different lines are recorded in different pages.</p> <p>This dataset has been generated within Feed-a-Gene (H2020) and GENEF (Spanish INIA) projects. It is presented to fullfit the requeriments of Milestone 22 of Feed-a-Gene. This milestone basically aims to show that a selection experiment for feed efficiency on rabbits, accounting for social interactions, can be operationally conducted using an electronic feeder to record individual feed intake of animals raised in groups. This device has also been developed within the frame of these two projects.</p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p>
RSS Feed Efficiency Study Dataset
<p>Work on improving overall RSS bandwidth, CPU and thus carbon efficiency,<br>especially between aggregators / catalogues (iTunes, Amazon Music) and<br>static backend servers.</p> <p>See: https://www.earth.org.uk/RSS-efficiency.html</p> <p>Note the data and code archive:<br> * Manifest dataCodeArchive.manifest.txt<br> * Archive dataCodeArchive.zip</p> <p>See the statsHouse sonification project:<br> * https://github.com/DamonHD/statsHouse</p> <p>This data (and code) is made available under<br>a CC0 licence (Creative Commons Zero v1.0 Universal).</p>
Silicon and Epichloë-endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore
<p>Plants deploy diverse anti-herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and<em> Epichloë</em>-endophytes for physical and chemical (i.e. endophytic-alkaloids) defence against insect herbivores. Recent studies suggest that <em>Epichloë</em>-endophytes increase Si accumulation in their host grass. It is unknown, however, how this affects Si-deposition on the leaf surface, their impacts on insect herbivore feeding efficiency and their immunity to potential infection/parasitism.</p> <p>To address this knowledge gap, we grew tall fescue (<em>Festuca arundinacea</em>) hydroponically with and without Si, in the absence or presence of the novel AR584 <em>Epichloë</em>-strain. We exposed plants to <em>Helicoverpa armigera</em> (Lepidoptera: Noctuidae) in both in-situ (intact leaves) and ex-situ (excised leaves) feeding trials and determined the effects of Si and endophyte defences on herbivore feeding efficiency, growth rates and immunity against potential infection/parasitism.</p> <p>Endophytic plants supplied with Si showed 110% and 143% increases in leaf silica density and leaf Si concentrations, respectively, when exposed to herbivory, compared to non-endophytic plants that were herbivore-free. Despite the endophyte-mediated increases in Si concentrations, <em>H. armigera</em> was only affected by Si supply; growth rates decreased by 87% and most feeding efficiency indices decreased by at least 30%. Si supply also increased mandibular wear by 16%, which was negatively correlated with <em>H. armigera</em> growth rates. Cellular and humoral immunity of <em>H. armigera</em> were negatively affected by both Si and endophytes. Endophytic-loline alkaloid concentrations were unaffected by Si supply or herbivory, whereas herbivory increased peramine concentrations by 290%. </p> <p>To our knowledge, this is the first report of Si defences and <em>Epichloë</em>-endophyte-derived alkaloids compromising insect immunity <em>via</em> reduced melanisation response. Using tall fescue and <em>H. armigera</em>, our study suggests that deploying both physical (i.e. Si accumulation) and chemical (i.e. endophytic-alkaloids) defences acting against multiple insect herbivore traits, including feeding efficiency, growth and immunity, may be a successful defence strategy in temperate grasses. This multi-faceted defence may be particularly difficult for insect herbivores to overcome.</p>
Silicon and Epichloë-endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore
Open the record for dataset details and reuse information.
Genotypes for GWAS study on feed efficiency traits in rabbits
<p>Dataset with genotypes on rabbits</p>
Anthropogenic noise reduces avian feeding efficiency and increases vigilance along an urban-rural gradient regardless of species' tolerances to urbanisation
<p>Anthropogenic noise can adversely impact urban bird populations by interfering with vocal communication. Less research has addressed if anthropogenic noise masks the adventitious sounds that birds use to aid predator detection, which may lead to increased vigilance and reduced feeding efficiency. We test this hypothesis using a controlled playback experiment along an urban-rural gradient in Sheffield (UK). We also test the related predictions that anthropogenic noise has the greatest impacts on vigilance and feeding efficiency in rural populations, and on species that are more sensitive to urbanisation. We focus on six passerines, in order from most to least urbanised (based on how urbanisation influences population densities): blue tit Cyanistes caeruleus, robin Erithacus rubeculla, great tit Parus major, chaffinch Fringilla coelebs, coal tit Periparus ater and nuthatch Sitta europaea. We used play-back of anthropogenic urban noise and a control treatment at 46 feeding stations located along the urban-rural gradient. We assess impacts on willingness to visit feeders, feeding and vigilance rates. Exposure to anthropogenic noise reduced visit rates to supplementary feeding stations, reduced feeding rates and increased vigilance. Birds at more urban sites exhibit less marked treatment induced reductions in feeding rates, suggesting that urban populations may be partially habituated or adapted to noisy environments. There was no evidence, however, that more urbanised species were less sensitive to the impacts of noise on any response variable. Our results support the adventitious sound masking hypothesis. Urban noise may thus interfere with the ability of birds to detect predators, reducing their willingness to use food rich environments and increase vigilance rates resulting in reduced feeding rates. These adverse impacts may compromise the quality of otherwise suitable foraging habitats in noisy urban areas. They are likely to be widespread as they arise in a range of species including common urban birds.</p>
Changes in key traits versus depth and latitude suggest energy-efficient locomotion, opportunistic feeding and light lead to adaptive morphologies of marine fishes.
1. Understanding patterns and processes governing biodiversity along broad-scale environmental gradients, such as depth or latitude, requires an assessment of not just taxonomic richness, but also morphological and functional traits of organisms. Studies of traits can help to identify major selective forces acting on morphology. Currently, little is known regarding patterns of variation in the traits of fishes at broad spatial scales. 2. The aims of this study were: (i) to identify a suite of key traits in marine fishes that would allow assessment of morphological variability across broad-scale depth (50 – 1200 m) and latitudinal (29.15 – 50.91°S) gradients; and (ii) to characterise patterns in these traits across depth and latitude for 144 species of ray-finned fishes in New Zealand waters. 3. Here, we describe three new morphological traits: namely, fin-base-to-perimeter ratio, jaw-length-to-mouth-width ratio, and pectoral-fin-base-to-body-depth ratio. Four other morphological traits essential for locomotion and food acquisition that are commonly measured in fishes were also included in the study. Spatial ecological distributions of individual fish species were characterised in response to a standardised replicated sampling design and morphological measurements were obtained for each species from preserved museum specimens. 4. With increasing depth, fishes, on average, became larger and more elongate, with higher fin-base-to-perimeter ratio and larger jaw-length-to-mouth-width ratio, all of which translates into a more eel-like anguilliform morphology. Variation in mean trait values along the depth gradient was stronger at lower latitudes for fin-base-to-perimeter ratio, elongation and total body length. Average eye size peaked at intermediate depths (500-700 m) and increased with increasing latitude at 700 m. 5. These findings suggest that, in increasingly extreme environments, fish morphology shifts towards a body shape that favours an energy-efficient undulatory swimming style and an increase in jaw-length versus mouth width for opportunistic feeding. Furthermore, increases in eye size with both depth and latitude indicate that changes in both the average ambient light conditions as well as seasonal variations in day-length can act to select ecomorphological adaptations in fishes. 10-Oct-2019
Figs. 32–34. Trap efficiency. 32 in The Dung- and Carrion-Feeding Scarabs (Coleoptera: Scarabaeoidea) of an Amazonian Blackwater Rainforest: Results of a Continuous, 56-Week, Baited-PitfallTrap Study
Figs. 32–34. Trap efficiency. 32) Quantity. Light-colored bars represent realized number of scarabaeoids taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch (= the mean percentage of all traps with that bait type and preservative (100%)). Dark-colored bars represent realized number of scarabaeoids taken in each trap expressed as a mean percentage for bait type only compared to the expected catch (the mean percentage of all traps with that bait type (100%)) if all variables between traps were equal. Nearly all of the traps performed well with the exceptions of traps 3 and 15 (dung) and 19 and 20 (carrion); 33) Species richness. Light-colored bars represent realized number of scarabaeoid species taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch. Dark-colored bars represent realized number of species taken in each trap expressed as a mean percentage for bait type only compared to the expected catch if all variables between traps were equal. Nearly all of the traps performed equally well; 34) Richness of only the "common" scarabaeoid species. Light-colored bars represent realized number of "common species" (those in excess of 0.005% of the total number of individuals) taken in each trap expressed as a mean percentage for the bait type and preservative compared to the expected catch. Dark-colored bars represent realized number of "common species" taken in each trap expressed as a mean percentage for only the bait type compared to the expected catch if all variables between traps were equal. Nearly all of the traps performed equally well in capturing the "common species".
Data of "Evaluation of feeding behaviour traits to predict efficiency traits in pigs using partial least square regression"
<p>This study explores the potential of using automatically recorded feeding behaviour as a proxy trait for protein and energy efficiency as well as fat gain in Swiss Large White pigs.</p> <p>behaviour.txt: A tab-delimited txt file of data used to investigate the relationship between feeding behaviour traits and protein efficiency in Swiss Large White pigs. Feeding behaviour traits taken were ‘daily feed intake’, ‘feeding rate’, ‘number of daily visits’, ‘duration at visits’, ‘feeding occupation’, and ‘feed intake per visit’.</p> <p>data_description_for_feeding_behaviour.xlsx: meta data for behaviour.txt with descriptions of variables</p>
Supplemental Table S2. Least square means of BW, DMI, milk yield (MY) and fat- and protein-corrected milk yield (FPCMY), milk protein yield (MPY), milk composition (milk fat, milk protein, milk lactose and MUN), milk N efficiency (MNE) and feed efficiency for the CTRL, MetLys and MetLysHis treatment groups in the pre-experimental, depletion and cross-back period.
<p><strong>Supplemental Table S2.</strong> Least square means of BW, DMI, milk yield (MY) and fat- and protein-corrected milk yield (FPCMY), milk protein yield (MPY), milk composition (milk fat, milk protein, milk lactose and MUN), milk N efficiency (MNE) and feed efficiency for the CTRL, MetLys and MetLysHis treatment groups in the pre-experimental, depletion and cross-back period.</p>
Anthropogenic noise reduces avian feeding efficiency and increases vigilance along an urban-rural gradient regardless of species’ tolerances to urbanisation
Open the record for dataset details and reuse information.
Data from: Adaptive plasticity and genetic divergence in feeding efficiency during parallel adaptive radiation of whitefish (Coregonus spp.)
Open the record for dataset details and reuse information.
Changes in key traits versus depth and latitude suggest energy-efficient locomotion, opportunistic feeding and light lead to adaptive morphologies of marine fishes.
Open the record for dataset details and reuse information.
Data from: Feeding in murky waters: acclimatization and landmarks improve foraging efficiency of zebrafish (Danio rerio) in turbid waters
Fish inhabiting human-dominated ecosystems are prone to altered sensory environments in which they must live and function. Increased turbidity is one such change that they must deal with. We tested whether an increase in water turbidity and presence of visual landmarks (coloured stones) affect the foraging efficiency of wild zebrafish. We also tested the influence of extended exposure to differing turbidity levels on the subsequent foraging efficiency of acclimatized individuals. Feeding latency (time taken to find food) increased significantly with increase in turbidity levels from a minimum of 4 s to ca. 300 s. However, extended exposure of fish to varying levels of turbidity decreased feeding latencies in acclimatized conditions, indicating that acclimatization to the immediate visual environment plays an important role in determining foraging success. Most significantly, we found that feeding latencies in turbid conditions decreased significantly if visual landmarks were present. This demonstrates that zebrafish utilize visual landmark cues to navigate to foraging sites when visibility is impaired. This study has important implications on the role of behavioural plasticity and spatial learning in animals that allow them to cope with altered sensory environments such as episodes of enhanced turbidity that could be natural or anthropogenic.
Supplementary Data from Article : Digging into Digging into Sheep Feed Efficiency using Rumen and Plasma Metabolomic Data.
<p><strong>Figure S1. </strong>Results of the Partial-Least Square Regression Discriminant Analysis on Plasma metabolites measured during the CONC phase. Samples from phenotypically efficient and inefficient animals are represented in gold circles and blue diamonds respectively. Variables with VIP values higher than 1.5 for the whole model are represented in green, those with values belonging to [1,1.5] are represented in red and those with values lower than 1 are represented in black. BER for the whole model is calculated. <strong>Figure S2. </strong>Results of the Partial-Least Square Regression Discriminant Analysis on Plasma metabolites measured during the MIX phase. Samples from phenotypically efficient and inefficient animals are represented in gold circles and blue diamonds respectively. Variables with VIP values higher than 1.5 for the whole model are represented in green, those with values belonging to [1,1.5] are represented in red and those with values lower than 1 are represented in black. BER for the whole model is calculated. <strong>Figure S3. </strong>Results of the Partial-Least Square Regression Discriminant Analysis on Rumenmetabolites measured during the CONC phase. Samples from efficient and inefficient animals are represented in gold circles and blue diamonds respectively. Variables with VIP values higher than 1.5 for the whole model are represented in green, those with values belonging to [1,1.5] are represented in red and those with values lower than 1 are represented in black. <strong>Figure S4. </strong>Results of the Partial-Least Square Regression Discriminant Analysis on Rumen metabolites measured during the MIX phase. Samples from efficient and inefficient animals are represented in gold circles and blue diamonds respectively. Variables with VIP values higher than 1.5 for the whole model are represented in green, those with values belonging to [1,1.5] are represented in red and those with values lower than 1 are represented in black.</p>
Data from: The effect of brain size evolution on feeding propensity, digestive efficiency and juvenile growth
One key hypothesis in the study of brain size evolution is the expensive tissue hypothesis; the idea that increased investment into the brain should be compensated by decreased investment into other costly organs, for instance the gut. While the hypothesis is supported by both comparative and experimental evidence, little is known about the potential changes in energetic requirements or digestive traits following such evolutionary shifts in brain and gut size. Organisms may meet the greater metabolic requirements of larger brains despite smaller guts via increased food intake or better digestion. But increased investment in the brain may also hamper somatic growth. To test these hypotheses we here used guppy (Poecilia reticulata) brain size selection lines with a pronounced negative association between brain and gut size and investigated feeding propensity, digestive efficiency, and juvenile growth rate. We did not find any difference in feeding propensity or digestive efficiency between large- and small-brained individuals. Instead, we found that large-brained females had slower growth during the first ten weeks after birth. Our study provides experimental support that investment into larger brains at the expense of gut tissue carries costs that are not necessarily compensated by a more efficient digestive system.
Data from: Feeding in murky waters: acclimatization and landmarks improve foraging efficiency of zebrafish (Danio rerio) in turbid waters
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.