Search results: 49,788 results (approx.)

1. Sensitivity analysis of fine dust spreading from litter in poultry houses.

Poultry houses are one of the major sources of agricultural particulate matter (PM) emissions into the environment. Litter properties, poultry activities, and indoor climate of poultry houses are the main parameters that influence the dust emission, but precise quantitative effects and their...

Author(s) : Derakhshani, S. M.; Ogink, N. W. M.; Bos, B. A. P.; Groot Koerkamp, P. W. G.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Biosystems Engineering 2021 Vol.208 pp.272-286 ref.46

2. Fruit development modelling and performance analysis of automatic greenhouse control.

This paper presents a receding horizon optimal control (RHOC) method with an economic objective function for balancing the cost of resources (resource use×cost) with income through yield (yield×product price). This paper considers the two elements that determine the income through yield. The first...

Author(s) : Kuijpers, W. J. P.; Antunes, D. J.; Hemming, S.; Henten, E. J. van; Molengraft, M. J. G. van de

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Biosystems Engineering 2021 Vol.208 pp.300-318 ref.22

3. Ventilation and cooling modeling and layout of fans, pads and vents of an octagonal greenhouse.

The aim of this study is to layout the fans, pads and vents to provide best air flow in an octagonal greenhouse. In this study, three layouts of evaporative pad and fan systems and vents (1- fans on the roof of the pyramids and vents on the wall of the pyramids; 2- pads and fans on the greenhouse...

Author(s) : Moghaddam, J. J.; Zarei, G.; Momeni, D.; Azadshahraki, F.; Ozlati, S.

Publisher : Ferdowsi University of Mashhad, Mashhad, Iran

Journal article : Journal of Agricultural Machinery 2021 Vol.11 No.2 pp.fa247-fa262 ref.many

4. Impact on environmental management on reproduction performances.

In fairly recent years it has been understood the need to guarantee excellent environmental conditions even to animals that do not produce milk, due to the repercussions that poor management of the calf, heifers and dry cows had on production, fertility and more generally on the cow health. In...

Foreign Title :Impatto della gestione ambientale sulle performance riproduttive.

Author(s) : Gnemmi, G.; Maraboli, C.

Publisher : Point Veterinaire Italie s.r.l., Milan, Italy

Journal article : Summa, Animali da Reddito 2021 Vol.16 No.2 pp.31-36 ref.16

5. Welfare parameters and keel bone damage in laying hens reared in different production systems.

The aim of this study was to determine the effect of housing system and the age of hens on welfare parameters and the prevalence of keel bone damage in laying hens. In this study two housing systems were evaluated: aviary system and enriched cages. From each system and age, we used 50 randomly...

Author(s) : Spiridonovic, S.; Stojèiæ, M. Đ.; Peric, L.; Pajic, M.; Kneževic, S.

Publisher : Institute for Animal Husbandry, Belgrade, Serbia

Journal article : Biotechnology in Animal Husbandry 2021 Vol.37 No.2 pp.109-116 ref.30

6. Investigating the effects of qualitative properties on pears dielectric coefficient.

Nowadays, the dielectric properties of food and biological products have become a valuable parameter in foodstuff engineering and coating technology, covering a remarkable spectral domain from 10-6 to 1012. In the present study, 27 completely healthy pears were selected and subjected to...

Author(s) : Mahmoodi, M. J.; Azadbakht, M.

Publisher : Ferdowsi University of Mashhad, Mashhad, Iran

Journal article : Journal of Agricultural Machinery 2021 Vol.11 No.1 pp.71-81 ref.20

7. Degree-day index for estimating the thermal requirements of a greenhouse equipped with an air-earth heat exchanger system.

In this research, an attempt was made to utilize an Earth-Air Heat Exchanger (EAHE) system as a source of shallow geothermal energy to provide thermal demands of a commercial greenhouse located in Alborz province, Iran. The degree-day index was applied to estimate the EAHE system's potential to...

Author(s) : Faridi, H.; Arabhosseini, A.; Zarei, G.; Okos, M.

Publisher : Ferdowsi University of Mashhad, Mashhad, Iran

Journal article : Journal of Agricultural Machinery 2021 Vol.11 No.1 pp.83-95 ref.41

8. Greenhouse operation and management.

This chapter discusses greenhouse operation and management. Its sanitation and hygiene for food safety and compliance programs and for crop protection; source water quality and treatment; biosecurity; waste management and disposal of wastewater and its treatment, disposal of and reduction in...

Author(s) : Morgan, L.

Book chapter : Hydroponics and protected cultivation: a practical guide 2021 pp.47-60 ref.16

9. Organic soilless greenhouse systems.

This chapter discusses the organic soilless greenhouse systems. It includes topics on organic greenhouse production, organic hydroponic systems, organic hydroponic nutrients, microbial mineralization of organic nutrients for hydroponics, anaerobic and aerobic processing of organic materials,...

Author(s) : Morgan, L.

Book chapter : Hydroponics and protected cultivation: a practical guide 2021 pp.100-117

10. Plant factories - closed plant production systems.

This chapter focuses on plant factories, which is an indoor, enclosed, crop cultivation system where the growing environment is precisely controlled to maximize production. Topics covered are the history and background of plant factories,advantages of plant factories, criticisms of plant factories, ...

Author(s) : Morgan, L.

Book chapter : Hydroponics and protected cultivation: a practical guide 2021 pp.229-245 ref.42

11. Examining the catching, carrying, and crating process during depopulation of end-of-lay hens.

Laying hen flocks undergo depopulation at end of lay, a difficult process that has been associated with injuries and is considered stressful to hens and human collectors. To date, most assessments of depopulations have been conducted within cage housing systems, layers, or noncage broilers, thus...

Author(s) : Gerpe, C.; Stratmann, A.; Bruckmaier, R.; Toscano, M. J.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Journal of Applied Poultry Research 2021 Vol.30 No.1 ref.many

12. Effects of different farrowing systems on piglet losses, labour efficiency and profitability: a literature review.

The amendment to the German order on the protection of animals and the keeping of production animals ("Tierschutz-Nutztierhaltungsverordnung"), which was voted on by the Bundesrat on 3 July 2020, will result in mandatory changes in sow husbandry. Sow farmers are faced with the question of which...

Foreign Title :Auswirkungen verschiedener Abferkelsysteme auf Ferkelverluste, Arbeitswirtschaftlichkeit und Ökonomie: ein Literaturüberblick.

Author(s) : Winkel, C.; Brandt, R. A.; Heise, H.; Wellner, K.

Publisher : Federal Ministry of Food, Agriculture and Consumer Protection, Bonn, Germany

Journal article : Berichte über Landwirtschaft 2021 Vol.99 No.1 ref.83

13. Management conditions and their relationship with infertility in crossbred cows under field conditions.

The present study was conducted on a total of 909 crossbred dairy cows maintained in various private farms from Kamrup, Darrang and Lakhimpur districts of Assam, and a total of 60 private farms were visited for recording different conditions of housing, feeding and breeding prevailing there and...

Author(s) : Dutta, L. J.; Nath, K. C.; Deka, B. C.; Dipak Bhuyan; Borah, P.; Saikia, G. K.; Bora, D. P.; Raju Deka; Less, D. B. S.

Publisher : Taylor & Francis, Abingdon, UK

Journal article : Biological Rhythm Research 2021 Vol.52 No.4 pp.517-523 ref.9

14. Effect of temperature sensor numbers and placement on aeration cooling of a stored grain mass using a 3D finite element model.

Grain stored in silos in the United States of America is generally cooled with an aeration system to limit mold spoilage and insect infestation. Monitoring efficacy of aeration and real-time conditions of stored grain is generally done using temperature cables with fixed-spaced sensor locations...

Author(s) : Plumier, B.; Maier, D.

Publisher : MDPI AG, Basel, Switzerland

Journal article : Agriculture 2021 Vol.11 No.3 ref.20

15. Retrofitting Southern African cities: a call for appropriate rooftop greenhouse designs as climate adaptation strategy.

In response to the burgeoning building integrated agriculture (BIA) discourse and industry, and assumptions of this land use form as a climate change adaptation strategy, this study considers the impact of rooftop greenhouses (RTGs) on the thermal performance of the built environment in current and ...

Author(s) : Hugo, J.; Plessis, C. du; Masenge, A.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Journal of Cleaner Production 2021 Vol.312

16. Identification of energy-efficient solutions for broiler house envelopes through a primary energy approach.

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 ...

Author(s) : Costantino, A.; Calvet, S.; Fabrizio, E.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Journal of Cleaner Production 2021 Vol.312

17. Evaluation of the bactericidal effect of some disinfectants against E.coli and Salmonella isolated from poultry hatcheries.

Poultry production considers one of the most important activities for economy and income in many countries . Proper management and hygiene in poultry hatchery mostly depend on efficient cleaning and sanitation of the hatchery environment and hatching eggs for production high quality newly hatched...

Author(s) : Khaliq, S. F. A. E.; Ashoub, M. M. A.; Metawea, Y. F. A.

Publisher : Faculty of Veterinary Medicine, Benha University, Toukh, Egypt

Journal article : Benha Veterinary Medical Journal 2021 Vol.40 No.1 pp.32-35 ref.28

18. A sustainable localised air distribution system for enhancing thermal environment and indoor air quality of poultry house for semiarid region.

This work compares the performance of three passive cooling systems in meeting thermal and indoor air quality requirements in a poultry house located in semi-arid climate. The first two systems are a direct evaporative cooler and a cross-flow dew point evaporative cooler supplying air through a...

Author(s) : Al-Assaad, D. K.; Orabi, M. S.; Ghaddar, N. K.; Ghali, K. F.; Salam, D. A.; Ouahrani, D.; Farran, M. T.; Habib, R. R.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Biosystems Engineering 2021 Vol.203 pp.70-92

19. CFD study of the effect of inlet position and flap on the airflow and temperature in a laying hen house in summer.

Evaporation pads and tunnel ventilation are commonly adopted in hen houses. To ensure the cooling efficiency of pads and airflow in the building, inlets with pads are often placed in sidewalls. Flaps are often fitted behind inlets to alleviate the sudden temperature drops that can be caused by...

Author(s) : Cheng QiongYi; Feng HuaBing; Meng HaiBo; Zhou HaiBin

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Biosystems Engineering 2021 Vol.203 pp.109-123

20. Development of a heat pulse sensor for measuring matric suction on soilless substrates.

Crops cultivated in greenhouse normally use soilless substrates as a growing medium. In this production process, strict control of the application of water and fertilizers is required. The availability of sensors that measure accurately and at low cost the matric suction in the culture medium...

Author(s) : Mota, W. N. da; Evangelista, A. W. P.; Maia, L. J. Q.; Correchel, V.; Alves, J.; Varrone, L. F. R.; Gitirana, G. de F. N.

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Computers and Electronics in Agriculture 2021 Vol.185

21. Health information acquisition and position calculation of plug seedling in greenhouse seedling bed.

The health information acquisition of plug seedlings plays an important role in automatic seedling transplanting. This study proposed the use of a mobile inspection and transplanting machine operation method on the seedbed. Compared with the operation of a fixed transplanter, this method can reduce ...

Author(s) : Tong JunHua; Yu JianLin; Wu ChuanYu; Yu GaoHong; Du XiaoQiang; Shi HuFeng

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Computers and Electronics in Agriculture 2021 Vol.185

22. Structural and microclimatic characteristics of dairy cattle shelters in Kerala.

Thermal environment and structural characteristics of cattle shelters have profound influence on the overall welfare of dairy animals. A field study was conducted to examine the structural characteristics of dairy farms in four THI zones of Kerala during the summer months of February and March in...

Author(s) : Sasi Divya; Harikumar, S.; Prasad, A.; Beena, V.; Gleeja, V. L.; Nameer, P. O.

Publisher : Indian Veterinary Association, Kerala, Thiruvananthapuram, India

Journal article : Journal of Indian Veterinary Association, Kerala (JIVA) 2021 Vol.19 No.1 pp.33-42 ref.17

23. Wireless positioning and path tracking for a mobile platform in greenhouse.

In order to realize intelligent greenhouse, an automatic navigation method for a mobile platform based on ultra-wideband (UWB) positioning technology was proposed and validated in this study. The time difference of arrival (TDOA) approach was used to monitor and track the UWB positioning to obtain...

Author(s) : Yao LiJian; Hu Dong; Zhao Chao; Yang ZiDong; Zhang Zhao

Publisher : Chinese Society of Agricultural Engineering, Beijing, China

Journal article : International Journal of Agricultural and Biological Engineering 2021 Vol.14 No.1 pp.216-223 ref.21

24. CO2 utilisation in agricultural greenhouses: a novel 'plant to plant' approach driven by bioenergy with carbon capture systems within the energy, water and food Nexus.

Securing the growing populations' demand for food energy and water whilst adapting to climate change is extremely challenging. In this regard, bioenergy coupled with carbon capture and storage or utilisation (BECCS/U) is an attractive solution for meeting both the population demand, and offsetting...

Author(s) : Ghiat, I.; Mahmood, F.; Govindan, R.; Al-Ansari, T.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Energy Conversion and Management 2021 Vol.228 ref.71

25. Social behavior in dairy cattle, social networks and their influence on farm dynamics.

Foreign Title :Comportamiento social en vacuno lechero, redes sociales y su influencia en la dinámica de granja.

Author(s) : Garcia-Pérez, C.; Villalba-Mata, D.; Blanco-Penedo, I.

Publisher : Grupo Asis Biomedia, S.L., Saragossa, Spain

Journal article : Albéitar 2021 No.243 pp.4-7 ref.19