Abstract
Kowing the importance of utilised food for milk obtaining, in the current paper we determine the chemical composition of a natural meadow and green mass alfalfa cultivated in ecological and conventional systems, utilised for dairy cows feeding. Were analysed the content in: dry matter DM (%), crude ash C.Ash (%), organic substance OS (%), crude protein CP (%), crude cellulose CC (%), non-nitrogenous extractive substances NES (%), neutral detergent fibre NDF (%), acid detergent fibre ADF (%), Ca (%), P (%), heavy metals (Pb, Cd, Zn, Cu - ppm), nitrates, nitrites and pesticides. Analysis were realised in two consecutive production years, for each indicator being made 5 determinations. Samples gathering and analysis were effectuated in according with standards and enshrined working methods. Differences between crude chemical composition of forages obtained in ecological system and the ones obtained by conventional agriculture had statistical significance (from significant � p ≤ 0.05 � to very significant � p ≤ 0.001) for the majority of indicators. Differences between those two production systems were insignificant only for crude fat (both forages), crude cellulose (alfalfa), non-nitrogenous extractive substances (both forages) and for acid detergent fibre (alfalfa). Both forages were safety regarding pollutants (heavy metals, nitrites, nitrates and pesticides), existing however statistically differences between those two production systems, in the favour of ecological
Highlights
Cow milk is a food with high nutritional value being rich in minerals, vitamins, proteins, fats and carbohydrates [1], being recommended for daily consumption [2], both for adults and as well as for younger [3, 4]
Because quality of food products depends on quality of raw material and this one by the quality of feed administrated to animals, by the current paper we aimed to determine the chemical composition of green mass alfalfa and natural meadow obtained in ecological system, frequently utilized in dairy cows’ nourishment and to show the possible differences between those two systems for producing of forages
Content in Dry matter content (DM) of natural meadow gathered at the beginning of flowering from conventional system was 16.81% in 1st year and 15.31% in 2nd year, values under the limit of the ones cited in literature, of 17.2% [52, 65] ÷ 24.12% [66]
Summary
Cow milk is a food with high nutritional value being rich in minerals, vitamins, proteins, fats and carbohydrates [1], being recommended for daily consumption [2], both for adults and as well as for younger [3, 4]. Obtaining of ecological cow milk suppose utilisation in cows’ nourishment of fodders resulted from ecological agriculture [5]. Ecological agriculture means renouncing at chemical fertilizers for avoiding accumulation of nitrites and nitrates, replacement of pesticides with ecological products and methods for combat of pest and ill diseases, avoiding of contamination with heavy metals (Pb, Cd, Cu, Zn), limitation of using of antibiotics for treatments [5]. Heavy metals, nitrites, nitrates, antibiotics residuum represent relevant indicators for pollution level and for the quality of ecological products.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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 callDisclaimer: 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.
