Human-Managed vs. Natural Grazing Systems: Exploring Effects of Livestock and Wildlife Grazing at Multiple Scales
Contributor(s):: Megan Esther McSherry
Grazing by large herbivores is the most prevalent land use on grassland ecosystems, which cover greater than 40% of the earth's land surface and provide critical ecological and economic benefits. As such, understanding how grazing impacts different aspects of the ecosystem is of especially...
Grass management regimes affect grasshopper availability and subsequently American crow activity at airports
Contributor(s):: Kennedy, Laura A., Otter, Ken A.
Modeling waterfowl damage to crops surrounding the Quill lakes in Saskatchewan
Contributor(s):: Callaghan, Carolyn J., Daneshfar, Bahram, Thompson, Donald J.
Response of a small population of greater sage-grouse to tree removal: implications of limiting factors
Contributor(s):: Frey, S. Nicole, Curtis, Rachel, Heaton, Kevin
Effects of site characteristics, pinyon-juniper management, and precipitation on habitat quality for mule deer in New Mexico
Contributor(s):: Bender, Louis C., Boren, Jon C., Halbritter, Heather, Cox, Shad
Rodent population management at Kansas City International Airport
Contributor(s):: Witmer, G. W.
Preference of white-tailed deer for corn hybrids and agricultural husbandry practices during the growing season
Contributor(s):: Delger, J. A., Monteith, K. L., Schmitz, L. E., Jenks, J. A.
The effects of food-related environmental complexity on litter directed behaviour, fear and exploration of novel stimuli in young broiler chickens
Contributor(s):: Pichova, K., Nordgreen, J., Leterrier, C., Kostal, L., Moe, R. O.
Stimulation of foraging behaviour during the first weeks of life by increasing environmental complexity such as scattering food items on the litter may be one way of preventing leg disorders, reducing fear and improving broiler welfare. However, studies on effects of access to various food based...
Behavioural response of pure Ankole and crossbred (Ankole * Holstein) cows to seasonal pasture variations in south-western Uganda
Contributor(s):: Idibu, J., Kabi, F., Mpairwe, D.
This study evaluated the effects of season and pasture species on variations in sward composition, pasture quantity (plant-height and biomass) and quality [crude protein (CP), neutral detergent fibre (NDF) and in vitro organic matter digestibility (IVOMD)]. Behavioural responses of a group of 10...
Degree of synchrony based on individual observations underlines the importance of concurrent access to enrichment materials in finishing pigs
Contributor(s):: Zwicker, B., Weber, R., Wechsler, B., Gygax, L.
Pigs are sociable animals with a strong motivation to explore and forage, and it has been stated that they have a strong motivation to do so synchronously. We examined the synchrony of exploration in groups of finishing pigs when enrichment materials were offered. We used a novel measure of...
Dustbathing, pecking and scratching behaviours of laying hens in furnished cages are enhanced by the presence of rubber mats and litter distribution
Contributor(s):: Guinebretiere, M., Michel, V., Arnould, C.
Furnished cages for laying hens exist in a wide variety of sizes and designs and should be equipped to allow hens to express some of their behavioural priorities. European Council Directive 1999/74/EC stipulates that litter must be provided for pecking and scratching but the type of litter and...
Condensed tannins reduce browsing and increase grazing time of free-ranging goats in semi-arid savannas
Contributor(s):: Mkhize, N. R., Heitkonig, I. M. A., Scogings, P. F., Dziba, L. E., Prins, H. H. T., Boer, W. F. de
Tannin concentrations fluctuate spatially and temporally within and among plant species, with consequences for forage quality of herbivores. The extent to which these fluctuations influence foraging activities of goats is not fully understood. While accounting for the effects of the time of the...
Retracting inconclusive research: lessons from the Seralini GM maize feeding study
Contributor(s):: Resnik, D. B.
In September 2012, Gilles-Eric Seralini and seven coauthors published an article in Food and Chemical Toxicology claiming that rats fed Roundup-resistant genetically modified maize alone, genetically modified maize with Roundup, or Roundup for 2 years had a higher percentage of tumors and kidney...
Effects of stage of gestation at mixing on aggression, injuries and stress in sows
Contributor(s):: Stevens, B., Karlen, G. M., Morrison, R., Gonyou, H. W., Butler, K. L., Kerswell, K. J., Hemsworth, P. H.
Confinement of breeding sows to stalls is a controversial welfare issue, and there is a worldwide move to house gestating sows in groups. We examined the effects of day of mixing following insemination on aggression, injuries and stress in sows. A total of 800 sows were used in this experiment...
Density-dependent diet selection and body condition of cattle and horses in heterogeneous landscapes
Contributor(s):: Cornelissen, P., Vulink, J. T.
For some decades, grazing by cattle and horses is used as a management tool to achieve different nature management goals. For managers there are still questions to be answered about the effects of herbivore densities on their performance, vegetation development and biodiversity. This study...
What do calves choose to eat and how do preferences affect behaviour?
Contributor(s):: Webb, L. E., Engel, B., Berends, H., Reenen, C. G. van, Gerrits, W. J. J., Boer, I. J. M. de, Bokkers, E. A. M.
Calves raised for milk or meat are fed diets that differ from feral-herd calf diets and are based on the nutritional requirements of the 'average calf'. These diets may not meet the dietary preferences of each individual calf. This study explored diet preferences in calves with free dietary...
Are special feed and being brushed judged as positive by calves?
Contributor(s):: Westerath, H. S., Gygax, L., Hillmann, E.
In studies concerning animal welfare, especially on methods to enhance positive welfare, different stimuli are used to create positive situations or "rewards". A positive judgement by the animals, however, cannot be assumed a priori. The aim of this study was to determine by means of preference...
Effect of breed and lithium chloride dose on the conditioned aversion to olive tree leaves ( Olea europaea L.) of sheep
Contributor(s):: Manuelian, C. L., Albanell, E., Rovai, M., Salama, A. A. K., Caja, G.
Grazing maybe an efficient tool for controlling weed cover in olive groves. However, olive leaves are very palatable for sheep, which damages the trees and compromised the later olive production. Lithium chloride (LiCl) is an effective agent for creating food aversion in ruminants through the...
Effects of chronic intake of starch-, glucose- and fructose-containing diets on eating behaviour in adult minipigs
Contributor(s):: Ochoa, M., Malbert, C. H., Lalles, J. P., Bobillier, E., Val-Laillet, D.
Introduction: The aim of this study was to assess whether chronic intake of isocaloric high-fat diets differing partly in the source of carbohydrates (starch, glucose or fructose) and fed at the same level of intake impacts eating behaviour in the adult Yucatan minipig. Methods: Adult minipigs...
Instantaneous intake rate of free-grazing cattle as affected by herbage characteristics in heterogeneous tropical agro-pastoral landscapes
Contributor(s):: Chirat, G., Groot, J. C. J., Messad, S., Bocquier, F., Ickowicz, A.
Numerous territories of Sub-Saharan Africa are composed of a mosaic of very different landscape units: cropland, forest, and savannah. This spatial, but also temporal heterogeneity leads to complexity in the analysis of cattle intake behaviour. The instantaneous intake rate (IIR) is generally...