Abstract
UDK 636.2:66.074.32(497.6)
 At livestock farms most part of nitrogen arrives as purchased products (fertilizer, animal feed and purchased animals). Within the boundaries of the farm, nitrogen recycles between the livestock and crop components. Finally, nitrogen exit a livestock operation unit preferably as managed outputs (meat, crops and manure) sold off the farm. Difference between the inputs and the managed outputs represents an itrogen balance that can be an indicator of environmentally sustainable production. Nitrogen (im)balance consider only amount of the nutrient that cross the border of the farm. In ideal conditions the nitrogen input/output ratio should be 1:1. Some nitrogen exits the farm as losses to the environment (nitrates in groundwater, ammonia volatilized into the atmosphere, and nitrogen into groundwater and surface water).
 A study was conducted on five small poultry farm in order to determine whole farm nitrogen balance as difference between total nitrogen inputs (one day chickens, litter, animal feed) and outputs (meat, dead animals and manure). Selected farms differ according to capacity (ranging from 5,000 to 40,000 birds), producers of poultry feed, type and length of manure storage as well as other sensible farming practice which could influence on nitrogen balance.
 Collection of data on all farms is done using a questionnaire. Nitrogen content in all substrates (feed, manure, litter) was determinate by Kjeldahl procedure. The results of the whole farm nitrogen balance with the recommendations of its balancing in order to reduce the negative environmental implications are presented in the paper.
Highlights
In the last few years, the poultry industry presented a significant increase in the animal production sector in Bosnia and Herzegovina
Some nitrogen exits the farm as losses to the environment
1-day old Chickens on the Farm 1 were fed with compound feed-D2, while on the other farms chickens were fed with a compound feed-D1
Summary
In the last few years, the poultry industry presented a significant increase in the animal production sector in Bosnia and Herzegovina. Awareness of the implications of poultry farming activities such as contamination of soil, surface and groundwater and air, have increased over the years. Nutrients are transported along multiple pathways and in a variety of forms on a poultry operation. When it comes to environmental issues nitrogen plays an important role. Nitrogen exit a livestock operation unit preferably as managed outputs (meat, crops and manure) sold off the farm. Difference between the inputs and the managed outputs represents a nitrogen balance that can be an indicator of environmentally sustainable production. Feed program and manure export practices are the most significant indicator of N balance variation. Formulated ration that precisely meets the chicken’s requirements for meat production and maintenance will minimize excessive N excretion
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Radovi Šumarskog fakulteta Univerziteta u Sarajevu
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
