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Providing shade in situ in paddocks may lead to better animal welfare and/or improved sheep production outcomes. However, there are no replicated experiments detailing the effect of the provision of shade in situ under grazing during summer on behavioral, physiological, and production outcomes of sheep in the scientific literature. This study uses a replicated field experiment to examine the effect of provision of shade in situ to sheep under grazing on animal behavior, respiration rate, core body temperature (CBT), growth, and immunological function during summer in south east Australia. The experiment consisted of eight unshaded pasture plots and eight shaded pasture plots with an 18 m2 shade structure. Each plot was stocked with 20 sheep. Sheep with access to shade chose to use the shade in the hottest part of the day, reducing their 12 pm respiration rate to 64 breaths per minute (bpm) compared with sheep without shade at 98 bpm (P < 0.0001). However, the provision of shade had no effect on CBT, immunological function, or animal production. In the hottest part of the day, sheep without shade exhibited shade seeking behavior by either being located along the fence line (P < 0.0001) or at the water trough (P < 0.001). In conclusion, provision of shade in situ to sheep under grazing during summer conditions improved the affective state, and thus welfare, of the sheep by reducing the respiration rate needed to maintain thermostability. • Sheep at pasture chose to use shade in the hottest part of the day. • Sheep that used shade over summer had reduced respiration rates. • Sheep that used shade maintained the affective state in the hottest part of the day. • Access to shade did not increase growth rates of sheep at pasture over summer. [ABSTRACT FROM AUTHOR]

The development of feeding systems that can individually measure and control feed intake in a group-housed environment would allow a greater understanding of sheep intake without compromising animal welfare and behavior through the removal of social interactions between sheep. This study validated an automated feeding system for measuring feed intake of individual sheep when housed in groups. Validation of the feeding system was conducted during three separate experiments. The validation sampling involved the activation of four individual "feed events," whereby four separate samples weighing approximately 50, 100, 200, and 400 g were removed from each feeder, with each feed event being linked to a specific radio frequency identification (RFID) tag. The feeder validation experiments evaluated the ability of the feeding system to 1) create a unique feed event every time a sample of pellets was collected from the feeder, 2) link the feed event to the correct RFID, and 3) accurately record the weight of feed that was manually removed. All feed events were initiated and logged in the feeding system with 100% of the events being linked to the correct test RFID. Concordance correlation coefficients between the feeding system-recorded feed weight and the manually removed weight were 0.99 within all three experiments. There was also no overall and little level-dependent bias between the weights measured by the feeding system and weights measured on the external scales. These results indicate the stability of the feeding system over time and consistency between the feeders within and across the three experiments. In conclusion, the automated feeding system developed for measuring individual animal feed intake was able to detect and record the unique electronic RFID associated with unique feed events and accurately capture the weight of feed removed. Furthermore, there was no change in the accuracy of the system from the start to the end of experimental periods, and the amount of feed removed in the feed event (or meal size) did not impact the accuracy of the results. [ABSTRACT FROM AUTHOR]