Learn More
OBJECTIVE To analyze the association of lameness and performance variables on sow longevity by use of time-to-event analysis. DESIGN Cohort study. ANIMALS 674 sows from a commercial breeding herd. PROCEDURES A lameness assessment was performed on each sow. Data on farrowing performance and longevity were collected for the sows during 3 or fewer(More)
OBJECTIVE To characterize patterns of removal and evaluate the associations among culling because of lameness and sow productivity traits among culled gilts and sows. DESIGN Cross-sectional study. SAMPLE POPULATION Data from a convenience sample of 11 farms pertaining to the removal of 51,795 gilts and sows from January 1991 to December 2002. Mean(More)
OBJECTIVE To determine whether there is a relationship between sow injuries and size of gestation stalls relative to sow size. DESIGN Prospective study. ANIMALS 267 pregnant sows. PROCEDURE Sows were randomly selected from 4 swine farms. Sow and stall measurements were obtained, and injuries were scored on the basis of location, number, and depth.(More)
OBJECTIVE To compare well-being, performance, and longevity of gestating sows housed in stalls or in pens with an electronic sow feeder (ESF). ANIMALS 382 pregnant sows of parities 1 through 6. PROCEDURE Sows were housed in separate stalls (n = 176) or group pens (206) with an ESF. Well-being of sows was assessed at various time points in terms of(More)
OBJECTIVE To compare the location and severity of injuries in pregnant sows housed in individual gestation stalls with that in pregnant sows housed in dynamic groups in pens with electronic sow feeders. DESIGN Prospective study. ANIMALS 100 pregnant sows of parity 1 to 3 and various body weights. PROCEDURE Fifty sows each were randomly allotted to(More)
Pregnant sows were housed in dynamic, twice-mixed, and static groups of different sizes in pens with electronic sow feeders (ESFs) to study the effect of group size and structure on sow welfare and performance. The total injury score (TIS) was significantly higher (P < 0.05) in the dynamic group than in the other groups in general and 2 wk after mixing. The(More)
Pain in nonhuman animals is a difficult concept to identify and measure. This article briefly describes the consequences of pain in animals on the farm and explains the reasons for the minimal use of analgesics in farmed animals. Pain can have implications for both animal welfare and economics. The reasons for a low use of analgesics in farmed animals(More)
As Webster has stated, we have real opportunities to provide incremental improvements to a whole range of welfare factors. We need a disciplined approach that takes into account the skills of farmers, veterinarians, and the whole range of other specialists involved in animal agriculture. Improvement is best based on a model of discovery, transparency, and(More)
In this paper, we proposed a progressive time varying source channel coding system for transmitting image over wireless channels. Transmission of compressed image data over noisy channel is an important problem and has been investigated in a variety of scenarios. the core results obtained by a systematic method of instantaneous rate allocation between the(More)