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poultryhousing, etc ; broiler breeders; chicks; feed conversion; feed intake; mortality; weight gain; Show all 7 Subjects
Abstract:
... This study investigated the effects of broiler chick hatching time and pull time on subsequent live performance. Hatching eggs were obtained from commercial broiler breeder flocks of Ross 308 at 29 and 30 wk of age in trials 1 and 2, respectively. Eggs were incubated in 2 identical setters on 2 consecutive days. In both trials, portion of the eggs (9,600), incubated on the first day of set, were a ...
poultryhousing, etc ; broiler breeders; cardboard; chicks; farms; flocks; hatcheries; hydrogels; mortality; yolk sac; Show all 10 Subjects
Abstract:
... This study investigated the effects of the broiler chick preplacement holding time and feeding hydration supplementation before placement on yolk sac utilization, the crop filling rate, feeding–drinking behavior and first-wk broiler performance. Broiler hatching eggs were obtained from a commercial broiler breeder flock of Ross 308 at 37 wk of age and incubated in a commercial hatchery. At 510 h o ...
poultryhousing, etc ; air quality; antagonism; autumn; environmental assessment; models; poultry production; temperature; ventilation systems; Show all 9 Subjects
Abstract:
... Due to the antagonism and synergy among environmental factors in the poultry house, the influence process becomes extremely complex. As a result, it is difficult to predict and evaluate the degree of such influence accurately. In this paper, we study the poultry house environment factor and its relationship with poultry production performance, using the gray relation analysis (GRA) to filtrate the ...
poultryhousing, etc ; biogas; electricity; energy efficiency; fermentation; flocks; gas production (biological); heat; models; temperature; Show all 10 Subjects
Abstract:
... The integrated energy system (IES) can improve energy efficiency by unified planning and operation of multiple heterogeneous energy sources. However, the existing research mainly focuses on the IES in urban areas. This paper introduces the broiler house and biogas digester into the IES and proposes a distributionally robust dispatch model for the integrated rural energy system with broiler houses ...
poultryhousing, etc ; Campylobacter; farm labor; inflammation; lungs; metabolites; metabolome; metabolomics; microbial communities; microbiome; particulates; public health; Show all 12 Subjects
Abstract:
... The particulate matter (PM) in livestock houses, one of the primary sources of atmospheric PM, is not only detrimental to the respiratory health of animals and farmworkers but also poses a threat to the public environment and public health and warrants increased attention. In this study, we investigated the variation in the pulmonary microbiome and metabolome in broiler chickens exposed to PM coll ...
poultryhousing, etc ; antibiotics; biomarkers; blood serum; chicken industry; diamine oxidase; dust; feed conversion; intestines; intracellular enzymes; long term effects; permeability; Show all 12 Subjects
Abstract:
... To overcome some of the disadvantages of conventional hatcheries, a new concept is being explored in the broiler industry: on-farm hatching. In on-farm hatching systems, broiler eggs are transported to the broiler house on day 18 of incubation. On-farm hatched chicks hatch in a low dust environment, are immediately exposed to light, and have instant access to nutrients and water. Previous studies ...
... Fine particulate matter (PM₂.₅) from poultry houses has adverse effects on the health of animals and workers. Tert-butylhydroquinone (TBHQ), an antioxidant, is widely used in feed additives. The present study investigated the effects of TBHQ on broiler house PM₂.₅-induced damage in chicken primary alveolar epithelial cells (AECII) extracted from 16-day-old chicken embryos using the method of diffe ...
poultryhousing, etc ; brooders; chickens; chicks; data collection; energy; environmental law; environmental models; growth performance; heat transfer; microclimate; relative humidity; risk reduction; simulation models; temperature; Show all 15 Subjects
Abstract:
... The growth performance and health of chicks can be significantly improved by a suitable microclimate in brooder houses. However, the microclimate of the chicken house is affected by factors such as its structure and the heat dissipation of chickens, making it is difficult to establish an accurate mathematical model and achieve effective regulation. In this paper, the environmental data acquisition ...
poultryhousing, etc ; aggression; air quality; beak trimming; body size; cages; farm management; fearfulness; feed formulation; fermentation; flocks; light intensity; mental health; poultry production; risk; straw; Show all 16 Subjects
Abstract:
... Studies on animal behavior and welfare have reported that improving the management practices of pullets can enhance their growth, as well as their physical and mental condition, thus benefiting the productivity of laying hens. There is growing confidence in the international community to abandon the conventional practices of “cage-rearing and beak-trimming” to improve the welfare of chickens. Ther ...
poultryhousing, etc ; consumer demand; poultry; research; Show all 4 Subjects
Abstract:
... Consumer demand regarding standards of care, welfare, and production methods are increasingly important for livestock and poultry producers. To meet consumer demands, the United States is on a path to increase levels of welfare. Structures added to the environment act as welfare enrichments, but establishing scientific understanding of their impact prior to implementation in poultry houses is crit ...
poultryhousing, etc ; Escherichia coli; Salmonella; air; dust; flocks; Show all 6 Subjects
Abstract:
... Dust present in poultry houses can disseminate bacteria in air and deposit them on surfaces. This study evaluated bacteria in settled dust during growout of broilers from 2 flocks (Flocks A and B). Dust samples for bacteria analyses were obtained during 6 wk of growout (Flocks A and B) and 1 wk after flock termination (Flock B) by environmental swabbing and collecting dust in petri dishes from mul ...
poultryhousing, etc ; agriculture; cages; farms; models; poultry; user interface; China; Show all 8 Subjects
Abstract:
... Stacked cage is the main breeding method of the large-scale farm in China. In broiler farms, dead broiler inspection is a routine task in the breeding process. It refers to the manual inspection of all cages and removal of dead broilers in the broiler house by the breeders every day. However, as the total amount of broilers is huge, the inspection work is not only time-consuming but also laborious ...
poultryhousing, etc ; broiler chickens; chemical analysis; chemometrics; dust; excreta; flocks; particulates; Show all 8 Subjects
Abstract:
... Poultry house dust is composed of fine particles which likely originate from a diverse range of materials such as feed, litter, excreta, and feathers. Little is known about the contribution of these sources to broiler house airborne dust so the present study was designed to identify the relative contributions of these sources. Samples of feed, excreta, feather, and bedding, known mixtures of these ...
poultryhousing, etc ; Enterobacteriaceae; Pseudomonas; air; dust; forage; human health; pollution; questionnaires; risk; Show all 10 Subjects
Abstract:
... The odors and dust emitted from hen houses affect human health and the condition of crops. The source of fumes is an element of the poultry house environment that affects the level of dust (litter and feed), the concentration of volatile compounds and the composition of the microflora (litter, dust and fodder). The research carried out as part of this study is a comprehensive assessment of the mic ...
poultryhousing, etc ; agriculture; animal welfare; automation; disease diagnosis; electronics; industry; labor; poultry; Show all 9 Subjects
Abstract:
... Poultry farming is an essential industry of animal husbandry, which is developing in the direction of scale, intelligence and unmanned. Intelligent information perception ideas for different application scenarios are stimulated with the rapid development of sensors, information communication and robotics technologies and artificial intelligence-based information processing technologies worldwide. ...
poultryhousing, etc ; Acarus siro; Cheyletus; Mesostigmata; flour; invasive species; mites; quarantine; research; Brazil; Show all 10 Subjects
Abstract:
... The aim of this work is to report the presence of the flour mite, Acarus siro L. (Astigmatina: Acaridae), in Senador Amaral, state of Minas Gerais, Brazil. Specimens of this species were recovered from litter of a poultry house in 2018, 2019 and 2020, as confirmed by morphological and molecular identification. This is the first confirmed report of this invasive species in Brazil, so far regulated ...
poultryhousing, etc ; chicken industry; data collection; light emitting diodes; light intensity; research; solar radiation; Show all 7 Subjects
Abstract:
... Responses to shifting consumer preferences and demands for alternative rearing programs have resulted in a re-evaluation of lighting programs by the commercial broiler industry. The objectives of this study were to compare light intensity levels, distribution, and uniformity in curtain-sided broiler houses using 2 lighting program treatments: (1) natural light only (NL) and (2) traditional light-e ...
poultryhousing, etc ; climate; cost analysis; energy efficiency; poultry production; primary energy; supply chain; weather; Show all 8 Subjects
Abstract:
... One of the main concerns regarding intensive broiler production is the high use of energy for climate control. An improved design of broiler house envelopes could decrease this energy consumption. Current evaluation methods only consider the delivered energy, which is misleading because it does not consider the entire energy supply chain. By contrast, primary energy encompasses all forms of direct ...
poultryhousing, etc ; agriculture; air flow; air quality; electronics; relative humidity; summer; temperature; ventilation systems; Show all 9 Subjects
Abstract:
... In poultry houses, the ventilation system should provide a favorable standard living environment for hens. In addition to uniform distribution of velocity and temperature, concentration of gaseous CO2 and NH3 pollutants and the humidity distribution, which affect the air quality in the poultry house, are of prime importance. In previous numerical studies on caged laying hen houses with tunnel vent ...
... The poultry industry is a major source of odor pollution and has received significant attention because of its impact on air quality and human health. Acid scrubbing has been widely used in livestock houses to remove ammonia (NH₃), but this method has not been optimized for other odorous compounds, such as volatile organic compounds (VOCs). In this study, on-farm acid scrubbing equipment was opera ...