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Károly Dublecz
Institute of Physiology and Nutrition, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák Ferenc Street 16, 8360 Keszthely, Hungary

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Journal article
Published: 16 August 2021 in Agriculture
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The main goal of the current study was to investigate the effects of feeding low protein (LP) diets on the performance parameters and excreta composition of broiler chickens. In total, 288 male Ross 308 day-old chickens were divided into two dietary treatment groups using six replicate pens with 24 chickens each. No LP diet was fed in the starter phase. The protein reduction in the grower and finisher phases were 1.8% and 2% respectively. Beside the measurements of production traits, on day 24 and 40 representative fresh excreta samples were collected, their dry matter, total N, NH4+-N and uric acid-N contents determined, and the ratio of urinary and fecal N calculated. Dietary treatments failed to cause significant differences in the feed intake, growth rate, and feed conversion ratio of animals. LP diets decreased the total nitrogen and uric acid contents of excreta significantly. The age of birds had also significant effect, resulting more reduction in the grower phase compared with the finisher. The ratio of urinary N was higher at day 40 compared with the age of day 24. The urinary N content of broiler chicken’s excreta is lower than can be found in the literature, which should be considered in the ammonia inventory calculations.

ACS Style

Nikoletta Such; László Pál; Patrik Strifler; Boglárka Horváth; Ilona Anna Koltay; Mohamed Ali Rawash; Valéria Farkas; Ákos Mezőlaki; László Wágner; Károly Dublecz. Effect of Feeding Low Protein Diets on the Production Traits and the Nitrogen Composition of Excreta of Broiler Chickens. Agriculture 2021, 11, 781 .

AMA Style

Nikoletta Such, László Pál, Patrik Strifler, Boglárka Horváth, Ilona Anna Koltay, Mohamed Ali Rawash, Valéria Farkas, Ákos Mezőlaki, László Wágner, Károly Dublecz. Effect of Feeding Low Protein Diets on the Production Traits and the Nitrogen Composition of Excreta of Broiler Chickens. Agriculture. 2021; 11 (8):781.

Chicago/Turabian Style

Nikoletta Such; László Pál; Patrik Strifler; Boglárka Horváth; Ilona Anna Koltay; Mohamed Ali Rawash; Valéria Farkas; Ákos Mezőlaki; László Wágner; Károly Dublecz. 2021. "Effect of Feeding Low Protein Diets on the Production Traits and the Nitrogen Composition of Excreta of Broiler Chickens." Agriculture 11, no. 8: 781.

Journal article
Published: 27 June 2021 in Applied Sciences
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The Ammonia Gas Emission Model for Swine (AGEM-S), a nitrogen flow model, was created with the objective of assisting in the reduction of ammonia emissions in the Hungarian pig sector. Regarding the applied technological processes and considering the factors that influence ammonia emissions, the model quantifies the amount of ammonia emissions of pig farming in all stages (feeding, housing technology, manure storage, and application in the field). The aim of the project was to create a system that performs general calculations using the input data used by practicing farmers, without compromising the information content of the output data. Using this system, the input parameters can be entered as simply as possible and in the shortest possible time. In addition to demonstrating the impact of ammonia emission reduction measures to farmers from an integrated N management approach, AGEM-S has the potential to support the transfer of emission reduction technologies and practices at the farm level as a knowledge transfer tool primarily, but also as a decision support tool for technological change.

ACS Style

Marianna Magyar; Béla Pirkó; Julianna Seenger; Nóra Baranyai; Károly Dublecz; Tibor Vojtela; Renáta Rák; György Borka; Anita Szabó; Zsuzsanna Benedek. Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary. Applied Sciences 2021, 11, 5970 .

AMA Style

Marianna Magyar, Béla Pirkó, Julianna Seenger, Nóra Baranyai, Károly Dublecz, Tibor Vojtela, Renáta Rák, György Borka, Anita Szabó, Zsuzsanna Benedek. Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary. Applied Sciences. 2021; 11 (13):5970.

Chicago/Turabian Style

Marianna Magyar; Béla Pirkó; Julianna Seenger; Nóra Baranyai; Károly Dublecz; Tibor Vojtela; Renáta Rák; György Borka; Anita Szabó; Zsuzsanna Benedek. 2021. "Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary." Applied Sciences 11, no. 13: 5970.