Stephanie Torrey
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View article: 107 The effect of water acidifiers on growth performance and general health of commercially housed weaned pigs
107 The effect of water acidifiers on growth performance and general health of commercially housed weaned pigs Open
The study compared the efficacy of supplementing the drinking water with acidifiers on growth performance and general health of commercially housed weaned pigs. The study design was a randomized complete block using 1152 mixed-sex weaned p…
View article: PSVIII-18 Chemical composition of residual yolk in response to feeding broiler breeders hydroxychloride or organic sources of zinc, copper, and manganese from 42 to 63 wk of age
PSVIII-18 Chemical composition of residual yolk in response to feeding broiler breeders hydroxychloride or organic sources of zinc, copper, and manganese from 42 to 63 wk of age Open
The objective was to investigate the effects of feeding broiler breeders (BB) hydroxychloride (HC) or organic (OR) sources of zinc (Zn), copper (Cu), and manganese (Mn) from 42 to 63 wk of age (woa) on chemical composition of residual yolk…
View article: 498 Feeding hydroxychloride or organic sources of zinc, copper, and manganese to broiler breeders on growth performance of offsprings when fed hydroxychloride or inorganic sources of the same minerals
498 Feeding hydroxychloride or organic sources of zinc, copper, and manganese to broiler breeders on growth performance of offsprings when fed hydroxychloride or inorganic sources of the same minerals Open
The study investigated the effect of feeding different sources of trace minerals (TM) such as zinc (Zn), copper (Cu), and manganese (Mn) in broiler breeders (BB) and their offspring on the growth performance of offspring. Ross 708 BB were …
View article: PSI-27 Dietary supplementation of betaine and an antioxidant blend improved feed efficiency in commercially housed fattening pigs under heat stress conditions
PSI-27 Dietary supplementation of betaine and an antioxidant blend improved feed efficiency in commercially housed fattening pigs under heat stress conditions Open
Heat stress decreases pig productivity and welfare by reducing feed intake and growth, increasing oxidative stress, and compromising gut health. Feed additives with anti-inflammatory and antioxidant properties could help pigs cope with the…
View article: PSV-3 Lifetime plasma concentration of select trace minerals in broiler chickens hatched from broiler breeders fed hydroxychloride or organic sources of zinc, copper, and manganese
PSV-3 Lifetime plasma concentration of select trace minerals in broiler chickens hatched from broiler breeders fed hydroxychloride or organic sources of zinc, copper, and manganese Open
The objective was to investigate the effects of feeding broiler breeders (BB) hydroxychloride (HC) or organic (OR) sources of zinc (Zn), copper (Cu), and manganese (Mn) from 42 to 63 wk of age (woa) on plasma concentration of trace mineral…
View article: Comparative efficacy of hydroxychloride and organic sources of zinc, copper, and manganese on egg production and concentration of trace minerals in eggs, plasma, and excreta in female broiler breeders from 42 to 63 weeks of age
Comparative efficacy of hydroxychloride and organic sources of zinc, copper, and manganese on egg production and concentration of trace minerals in eggs, plasma, and excreta in female broiler breeders from 42 to 63 weeks of age Open
Comparative efficacy of hydroxychloride (HC) and organic (OR) sources of Zn, Cu and Mn on performance of broiler breeders (BB) between 42 and 63 weeks of age (WOA) was investigated. A total of 408 ♀ Ross 708 and 48 ♂ Yield Plus cockerels w…
View article: Efficacy of three different cervical dislocation methods for on-farm killing of layer chicks
Efficacy of three different cervical dislocation methods for on-farm killing of layer chicks Open
Unfit chicks with low viability are often euthanized in the layer industry. An effective euthanasia protocol is characterized by rapid, irreversible insensibility, followed by prompt death. This study was conducted to evaluate the efficacy…
View article: In pursuit of a better broiler: walking ability and incidence of contact dermatitis in conventional and slower growing strains of broiler chickens
In pursuit of a better broiler: walking ability and incidence of contact dermatitis in conventional and slower growing strains of broiler chickens Open
In this study, the mobility, incidence, and severity of contact dermatitis and litter moisture content were assessed in 14 strains of broiler chickens differing in growth rate. The strains encompassed 2 conventional (CONV; ADG0-48 > 60 g/d…
View article: Growth performance, organ attributes, nutrient and caloric utilization in broiler chickens differing in growth rates when fed a corn-soybean meal diet with multienzyme supplement containing phytase, protease and fiber degrading enzymes
Growth performance, organ attributes, nutrient and caloric utilization in broiler chickens differing in growth rates when fed a corn-soybean meal diet with multienzyme supplement containing phytase, protease and fiber degrading enzymes Open
Growth performance, organ weight, ceca digesta short chain fatty acids (SCFA), jejunal histomorphometry, tibia ash, apparent retention (AR) of components and caloric efficiency were investigated in broiler chicken strains differing in grow…
View article: In pursuit of a better broiler: A comparison of the inactivity, behavior, and enrichment use of fast- and slower-growing broiler chickens
In pursuit of a better broiler: A comparison of the inactivity, behavior, and enrichment use of fast- and slower-growing broiler chickens Open
Selection for rapid growth has produced heavier, more efficient broiler chickens, but has also introduced health and welfare issues, which may cause or be caused by inactivity. Rapid growth may also limit the performance of motivated behav…
In pursuit of a better broiler: carcass traits and muscle myopathies in conventional and slower-growing strains of broiler chickens. Open
In pursuit of a better broiler: carcass traits and muscle myopathies in conventional and slower-growing strains of broiler chickens. Abstract Selection for accelerated growth rate and high breast yield in broiler chickens have been associa…
View article: In Pursuit of a Better Broiler: Growth, Efficiency and Mortality of 16 Strains of Broiler Chickens
In Pursuit of a Better Broiler: Growth, Efficiency and Mortality of 16 Strains of Broiler Chickens Open
To meet the growing consumer demand for chicken meat, the poultry industry has selected broiler chickens for increasing efficiency and breast yield. While this high productivity means affordable and consistent product, it has come at a cos…
View article: Comparative gastrointestinal, tibia, and plasma attributes in 48-day-old fast- and slow-growing broiler chicken strains
Comparative gastrointestinal, tibia, and plasma attributes in 48-day-old fast- and slow-growing broiler chicken strains Open
Emerging market differentiation for broiler meat from strains exhibiting a range of growth rates is necessitating comparative research on various physiological and production aspects of these strains. The objective of the present study was…
View article: Evaluation of Brain Death in Laying Hens During On-Farm Killing by Cervical Dislocation Methods or Pentobarbital Sodium Injection
Evaluation of Brain Death in Laying Hens During On-Farm Killing by Cervical Dislocation Methods or Pentobarbital Sodium Injection Open
This study investigated changes in the electroencephalograph (EEG) power spectrum as well as physiological and behavioral responses to on-farm killing via mechanical cervical dislocation (MCD), manual cervical dislocation (CD) or intraveno…
View article: The effect of alternative feeding strategies for broiler breeder pullets: 2. Welfare and performance during lay
The effect of alternative feeding strategies for broiler breeder pullets: 2. Welfare and performance during lay Open
Feeding broiler breeders to satiety has negative consequences on their health and reproduction. Alternative feeding strategies during rearing can improve welfare, although their implications during lay are not well understood. The objectiv…
View article: Assessing the behaviour of fast-growing broilers reared in pens with or without enrichment
Assessing the behaviour of fast-growing broilers reared in pens with or without enrichment Open
for oral presentation at annual congress for International Society for Applied Ethology, Bergen, Norway, 2019.
View article: The effect of enrichment on organ growth, cardiac myopathies, and bursal atrophy in a conventional strain of broiler chicken
The effect of enrichment on organ growth, cardiac myopathies, and bursal atrophy in a conventional strain of broiler chicken Open
for poster presentation at annual congress for International Society for Applied Ethology, Bergen, Norway, 2019.
View article: Conditioned place avoidance using encapsulated calcium propionate as an appetite suppressant for broiler breeders
Conditioned place avoidance using encapsulated calcium propionate as an appetite suppressant for broiler breeders Open
Broiler breeders, the parent stock of meat chickens, are feed-restricted throughout the production cycle to avoid obesity-related problems in their health and reproductive performance. Broiler breeders often show signs of chronic hunger, l…
View article: Growth performance, breast yield and gastrointestinal weight in conventional and slow-growing strains of broiler chickens fed corn-soybean meal diet without or with multi-enzyme supplement
Growth performance, breast yield and gastrointestinal weight in conventional and slow-growing strains of broiler chickens fed corn-soybean meal diet without or with multi-enzyme supplement Open
for poster presentation at annual Poultry Science congress in Montreal, Quebec, 2019