Determining the feeding value of some food industry by-products

Petru Alexandru Vlaicu

Abstract


Food industry by-products can be used in dairy cows feeding on condition they have suitable feeding value. A complex physical-chemical study was conducted on seven plant by-products (wheat germs meal, sunflower meal, flaxseed meal, pumpkin meal, nuts meal, rosehip meal and grape meal) to determine their feeding value. These by-products have variable protein contents: between 10.86% in rosehip meal and 39.34% in the flaxseed meal), and different contents of amino acids, lysine particularly: 2.09% (wheat germs meal); 1.72% (pumpkin meal) and 1.04% (sunflower meal). The highest concentration of linolenic acid was determined in the flaxseed meal (68.57 g/100 g total fatty acids), which also had the highest level of digestible energy (18.16 MJ/kg) and the highest amount of intestinally digestible protein allowed by the energy content (118 g IDPE/ kg DM). The flaxseed meal also had the highest amount of milk feed units (1.45 FUmilk/kg DM) and of meat feed units (1.48 FUmeat/kg DM) among all studied by-products. The results of these analyses show that the surveyed by-products can be used to feed ruminant animals.


Keywords


by-products, feeding value, digestible energy, milk feed units, meat feed units

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
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FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Bioengineering Faculty of Animal Resources
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