Search Results - "Siegford, J M"

Invited review: The impact of automatic milking systems on dairy cow management, behavior, health, and welfare by Jacobs, J A, Siegford, J M

“…Over the last 100 yr, the dairy industry has incorporated technology to maximize yield and profit. Pressure to maximize efficiency and lower inputs has…”
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Lactating dairy cows adapt quickly to being milked by an automatic milking system by Jacobs, J A, Siegford, J M

“…Transitioning a dairy herd to an automatic milking system (AMS) from a conventional parlor system may be stressful for the cow, as many changes occur during…”
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Laying hens in aviaries with different litter substrates: Behavior across the flock cycle and feather lipid content by Campbell, D L M, Ali, A B A, Karcher, D M, Siegford, J M

“…The tiered aviary for laying hens includes a floor litter area to promote foraging and dust bathing. Data are needed on hens' use of different litter…”
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Dairy cow behavior affects the availability of an automatic milking system by Jacobs, J A, Ananyeva, K, Siegford, J M

“…Facility design can affect the accessibility of an automatic milking system (AMS). In particular, gates and alleys positioned around the AMS may affect cow…”
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Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11β-hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets by Poletto, R., Steibel, J.P., Siegford, J.M., Zanella, A.J.

“…Pigs weaned at young ages show more abnormal and aggressive behaviors and cognitive deficits compared to later weaned pigs. We investigated the effects of age,…”
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Providing ramps during lay has larger impacts on laying hens than ramps at rearing by Toscano, M.J., Jalali, A.S., Siegford, J.M., Stratmann, A.

“…Commercial laying hen housing is shifting from traditional cages to non-cage housing systems, such as the aviary, which has gained popularity due to potential…”
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Later exposure to perches and nests reduces individual hens' occupancy of vertical space in an aviary and increases force of falls at night by Ali, B.A., Toscano, M., Siegford, J.M.

“…Tiered aviaries are intended to improve laying hen welfare by providing resources that enable them to perform essential behaviors. However, hens must be able…”
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Bioethics Symposium: A scientist's guide to approaching bioethics by Siegford, J.M

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Nest use and patterns of egg laying and damage by 4 strains of laying hens in an aviary system by Villanueva, S, Ali, A B A, Campbell, D L M, Siegford, J M

“…Laying hens are strongly motivated to use nests for egg laying, and alternative production systems (e.g., aviaries) provide artificial sites to meet this need…”
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Investigation of changes in global gene expression in the frontal cortex of early-weaned and socially isolated piglets using microarray and quantitative real-time RT-PCR by Poletto, R., Siegford, J.M., Steibel, J.P., Coussens, P.M., Zanella, A.J.

“…We hypothesize that early-weaned piglets experience aberrant expression of stress-responsive genes in the frontal cortex, a key brain area involved in…”
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Lying times of lactating cows on dairy farms with automatic milking systems and the relation to lameness, leg lesions, and body condition score by Westin, R, Vaughan, A, de Passillé, A M, DeVries, T J, Pajor, E A, Pellerin, D, Siegford, J M, Vasseur, E, Rushen, J

“…Lying down and resting are important for optimal cow health, welfare, and production. In comparison with free stall farms with a milking parlor, farms with…”
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Cow- and farm-level risk factors for lameness on dairy farms with automated milking systems by Westin, R, Vaughan, A, de Passillé, A M, DeVries, T J, Pajor, E A, Pellerin, D, Siegford, J M, Witaifi, A, Vasseur, E, Rushen, J

“…Lameness is a major concern to animal health and welfare within the dairy industry. Our objectives were to describe the prevalence of lameness in…”
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Litter use by laying hens in a commercial aviary: dust bathing and piling by Campbell, D. L. M., Makagon, M. M., Swanson, J. C., Siegford, J. M.

“…The laying hen industry, including in the United States, is responding to social concerns about hen welfare by implementing alternative housing systems such as…”
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Validating the accuracy of activity and rumination monitor data from dairy cows housed in a pasture-based automatic milking system by Elischer, M F, Arceo, M E, Karcher, E L, Siegford, J M

“…Behavioral observations are important in detecting illness, injury, and reproductive status as well as performance of normal behaviors. However, conducting…”
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Perch use by laying hens in a commercial aviary by Campbell, D L M, Makagon, M M, Swanson, J C, Siegford, J M

“…Non-cage housing systems, such as the aviary, are being implemented by the laying hen industry, including in North America, in an attempt to improve the…”
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Estimation of genetic parameters for lesion scores and growth traits in group-housed pigs by Wurtz, K E, Siegford, J M, Bates, R O, Ernst, C W, Steibel, J P

“…Pigs housed in groups are remixed with unfamiliar individuals, which can trigger aggressive interactions, potentially compromising animal welfare. Skin lesions…”
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Influence of genetic strain and access to litter on spatial distribution of 4 strains of laying hens in an aviary system by Ali, A B A, Campbell, D L M, Karcher, D M, Siegford, J M

“…Many laying hen producers are transitioning from conventional cages to new housing systems including multi-tier aviaries. Aviary resources, such as litter…”
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Laying hen movement in a commercial aviary: Enclosure to floor and back again by Campbell, D L M, Makagon, M M, Swanson, J C, Siegford, J M

“…Many producers in the laying hen industry, including in North America, are phasing out conventional cages in response to consumer demands and sometimes…”
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Influence of later exposure to perches and nests on flock level distribution of hens in an aviary system during lay by MacLachlan, S.S., Ali, A.B.A., Toscano, M.J., Siegford, J.M.

“…Aviaries provide hens with many resources, but birds must develop motor and cognitive skills to use them properly. Introducing birds to aviaries at older ages…”
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Detection of jumping and landing force in laying hens using wireless wearable sensors by Banerjee, D, Daigle, C L, Dong, B, Wurtz, K, Newberry, R C, Siegford, J M, Biswas, S

“…Increased mobility of hens in noncaged housing presents possibilities for bone breakage due to crash landings from jumps or flights between perches or housing…”
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