Goran Kiš
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Goran Kiš has a total of 107 co-authors. Here are the top co-authors by number of shared publications:
- Dalibor Bedeković
Agronomski fakultet Sveučilišta u Zagrebu
16 shared publications - Kristina Kljak
University of Zagreb
13 shared publications - Zlatko Janječić
Faculty of Agriculture, University of Zagreb, Svetosimunska 25, 10000 Zagreb, Croatia
13 shared publications - Ivica Kos
Sveučilište u Zagrebu Agronomski fakultet
8 shared publications - Darko Grbeša
Department of Animal Nutrition, University of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, 10000 Zagreb, Croatia
7 shared publications - Dora Zurak
Faculty of Agriculture, University of Zagreb, Svetosimunska 25, 10000 Zagreb, Croatia
5 shared publications
Latest Publications
- 30 June 2026
- Published by Hrvatsko Agronomsko Drustvo in Krmiva
- Vol. 68 (1) , 43-51
Organski minerali u hranidbi kokoši nesilica
Proizvodnja konzumnih jaja bazira se na uzgoju hibridnih kokoši nesilica čiju se proizvodnju po kljunu neprestano pokušava povećati. Takav proizvodni pritisak negativno djeluje na zdravlje kokoši i kvalitetu proizvoda, prije svega kvalitetu ljuske jaja. Otprilike 10 – 15 % svih gubitaka u proizvodnji izravna je posljedica niske kvalitete ljuske, što predstavlja velik ekonomski gubitak za proizvođače. Stoga najviše pažnje treba posvetiti poboljšanju ljuske jaja kako na području genetike, tako i hranidbe kokoši. Donedavno je fokus bio na poboljšanoj hranidbi kalcijem, fosforom i vitaminom D3 , no posljednjih godina sve se više pažnje posvećuje segmentu korištenja minerala u tragovima (Zn, Mn, Cu, Fe, Se), koji su izravno uključeni u stvaranje ljuske jaja. U hranidbi kokoši nesilica uglavnom se koriste minerali u tragovima u anorganskom obliku kao što su oksidi, karbonati, sulfati i fosfati, koji u pravilu imaju relativno slabu apsorpciju iz probavnog trakta. Uzgajivači pokušavaju nadoknaditi povećane potrebe dajući veće količine anorganskih minerala u krmne smjese. No, to često ima za posljedicu veliku količinu izlučenih minerala putem izmeta i negativan utjecaj na okoliš. Kao rješenje nameću se organski minerali, odnosno minerali povezani s organskim tvarima, najčešće aminokiselinama, peptidima, ugljikohidratima ili kvascima. U takvom obliku imaju bolje iskorištavanje, što omogućuje dodavanje manje količine minerala u krmne smjese, uz pozitivan učinak na kvalitetu ljuske i očuvanje okoliša. Stoga je cilj ovog rada opisati prednosti upotrebe minerala u tragovima organskog podrijetla u hranidbi kokoši nesilica.
- 30 June 2026
- Published by Hrvatsko Agronomsko Drustvo in Krmiva
- Vol. 68 (1) , 43-51
Organski minerali u hranidbi kokoši nesilica
Proizvodnja konzumnih jaja bazira se na uzgoju hibridnih kokoši nesilica čiju se proizvodnju po kljunu neprestano pokušava povećati. Takav proizvodni pritisak negativno djeluje na zdravlje kokoši i kvalitetu proizvoda, prije svega kvalitetu ljuske jaja. Otprilike 10 – 15 % svih gubitaka u proizvodnji izravna je posljedica niske kvalitete ljuske, što predstavlja velik ekonomski gubitak za proizvođače. Stoga najviše pažnje treba posvetiti poboljšanju ljuske jaja kako na području genetike, tako i hranidbe kokoši. Donedavno je fokus bio na poboljšanoj hranidbi kalcijem, fosforom i vitaminom D3 , no posljednjih godina sve se više pažnje posvećuje segmentu korištenja minerala u tragovima (Zn, Mn, Cu, Fe, Se), koji su izravno uključeni u stvaranje ljuske jaja. U hranidbi kokoši nesilica uglavnom se koriste minerali u tragovima u anorganskom obliku kao što su oksidi, karbonati, sulfati i fosfati, koji u pravilu imaju relativno slabu apsorpciju iz probavnog trakta. Uzgajivači pokušavaju nadoknaditi povećane potrebe dajući veće količine anorganskih minerala u krmne smjese. No, to često ima za posljedicu veliku količinu izlučenih minerala putem izmeta i negativan utjecaj na okoliš. Kao rješenje nameću se organski minerali, odnosno minerali povezani s organskim tvarima, najčešće aminokiselinama, peptidima, ugljikohidratima ili kvascima. U takvom obliku imaju bolje iskorištavanje, što omogućuje dodavanje manje količine minerala u krmne smjese, uz pozitivan učinak na kvalitetu ljuske i očuvanje okoliša. Stoga je cilj ovog rada opisati prednosti upotrebe minerala u tragovima organskog podrijetla u hranidbi kokoši nesilica.
- 24 March 2026
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 28 (2) , 126-137
Usporedna analiza fizikalnih i senzorskih svojstava komercijalnih biljnih i mesnih burgera
Cilj rada bio je usporediti deklarirani nutritivni sastav, fzikalna svojstva nakon toplinske obrade i senzorski profl triju mesnih i triju biljnih burgera dostupnih na hrvatskom tržištu. Nutritivni podaci prikazani su prema deklaraciji proizvođača. Energetska vrijednost uzoraka kretala se od 196 do 320 kcal/100 g, dok je sadržaj soli varirao od 0,47 do 2,1 g/100 g. Mesni burgeri sadržavali su veći udio zasićenih masnih kiselina (4,4-10,3 g/100 g), a biljni više ugljikohidrata (4,2-6,9 g/100 g). Tijekom toplinske obrade utvrđeno je izraženije smanjenje površine kod mesnih burgera (do 25,3 %) i debljine (do 19,5 %) u odnosu na biljne burgere (11,7-14,6 % površine; 4,1-7,7 % debljine) (p < 0,05). Kalo toplinske obrade iznosilo je prosječno 22,63 % kod mesnih i 24,32 % kod biljnih burgera, pri čemu su razlike među pojedinim uzorcima unutar skupina također bile značajne (p < 0,05). Posebno se isticao jedan mesni uzorak s tek 7,3 % gubitka mase, što je značajno odstupalo od ostalih (p < 0,05). Udio izdvojene tekućine u kalu bilo je u rasponu od 9,62 % do 50,16 %, uz statistički značajne razlike između i unutar skupina burgera (p < 0,05). Senzorskom analizom uz primjenu kvantitativne opisne metode utvrđene su značajne razlike između skupina burgera u tvrdoći, elastičnosti, kohezivnosti, intenzitetu mesnog i biljnog okusa te masnom dojmu (p < 0,05). Mesne burgere karakterizirale su više vrijednosti tvrdoće i mesnog okusa, dok su biljni proizvodi imali izraženiji biljni okus i mekšu strukturu (p < 0,05). Unutar biljnih burgera zabilježena je osobito velika varijabilnost u zrnatosti, sočnosti i zagorenim notama (p < 0,05), dok su i među mesnim uzorcima postojale razlike u sočnosti i slanosti (p < 0,05). Unutar obje grupe burgera uočene su razlike među pojedinim proizvodima, što upućuje na heterogenost komercijalnih formulacija. Dobiveni rezultati ukazuju da se mesni i biljni burgeri razlikuju u ključnim fzikalnim i senzorskim svojstvima, pri čemu dio varijabilnosti proizlazi iz razlika među pojedinačnim proizvodima.
- 24 March 2026
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 28 (2) , 126-137
Usporedna analiza fizikalnih i senzorskih svojstava komercijalnih biljnih i mesnih burgera
Cilj rada bio je usporediti deklarirani nutritivni sastav, fzikalna svojstva nakon toplinske obrade i senzorski profl triju mesnih i triju biljnih burgera dostupnih na hrvatskom tržištu. Nutritivni podaci prikazani su prema deklaraciji proizvođača. Energetska vrijednost uzoraka kretala se od 196 do 320 kcal/100 g, dok je sadržaj soli varirao od 0,47 do 2,1 g/100 g. Mesni burgeri sadržavali su veći udio zasićenih masnih kiselina (4,4-10,3 g/100 g), a biljni više ugljikohidrata (4,2-6,9 g/100 g). Tijekom toplinske obrade utvrđeno je izraženije smanjenje površine kod mesnih burgera (do 25,3 %) i debljine (do 19,5 %) u odnosu na biljne burgere (11,7-14,6 % površine; 4,1-7,7 % debljine) (p < 0,05). Kalo toplinske obrade iznosilo je prosječno 22,63 % kod mesnih i 24,32 % kod biljnih burgera, pri čemu su razlike među pojedinim uzorcima unutar skupina također bile značajne (p < 0,05). Posebno se isticao jedan mesni uzorak s tek 7,3 % gubitka mase, što je značajno odstupalo od ostalih (p < 0,05). Udio izdvojene tekućine u kalu bilo je u rasponu od 9,62 % do 50,16 %, uz statistički značajne razlike između i unutar skupina burgera (p < 0,05). Senzorskom analizom uz primjenu kvantitativne opisne metode utvrđene su značajne razlike između skupina burgera u tvrdoći, elastičnosti, kohezivnosti, intenzitetu mesnog i biljnog okusa te masnom dojmu (p < 0,05). Mesne burgere karakterizirale su više vrijednosti tvrdoće i mesnog okusa, dok su biljni proizvodi imali izraženiji biljni okus i mekšu strukturu (p < 0,05). Unutar biljnih burgera zabilježena je osobito velika varijabilnost u zrnatosti, sočnosti i zagorenim notama (p < 0,05), dok su i među mesnim uzorcima postojale razlike u sočnosti i slanosti (p < 0,05). Unutar obje grupe burgera uočene su razlike među pojedinim proizvodima, što upućuje na heterogenost komercijalnih formulacija. Dobiveni rezultati ukazuju da se mesni i biljni burgeri razlikuju u ključnim fzikalnim i senzorskim svojstvima, pri čemu dio varijabilnosti proizlazi iz razlika među pojedinačnim proizvodima.
- Open Access
Production Performance and Properties of Eggs from Hens Fed Diets Differing in Corn Grain Hardness, Vitamin A Supplementation Level, and Mineral Form
This study evaluated how corn grain hardness, vitamin A supplementation level, and trace mineral form influence production performance and egg properties in laying hens. In a 2 × 3 × 2 factorial design, 252 Lohmann Brown hens received diets containing soft- or hard-type corn hybrids; 5000, 10,000, or 20,000 IU/kg of vitamin A; and inorganic or organic trace minerals for 63 days. Hard-type corn increased daily egg mass, improved feed conversion ratio, and produced eggs with higher MUFAs and SFAs but lower PUFAs and n-3, resulting in a less favorable n6/n3 ratio, while also increasing susceptibility to Fe-induced lipid oxidation despite lower PUFAs. Increasing dietary vitamin A to 10,000–20,000 IU/kg increased egg weight and shell strength, linearly increased yolk retinol, and decreased tocols, with 20,000 IU/kg markedly increasing Fe-induced MDA formation without major changes in PUFAs. Trace mineral form had minor effects on performance and fatty acid profile. Overall, modest changes in laying hen diet, such as corn hybrid, vitamin A supplementation level, and trace mineral form, significantly modulated egg nutritional composition and oxidative stability. A high dietary vitamin A level may compromise the oxidative resilience of enriched eggs, while interactions of trace mineral form with corn hybrid and vitamin A suggest its potential modulatory role in lipid oxidation pathways.
Open AccessProduction Performance and Properties of Eggs from Hens Fed Diets Differing in Corn Grain Hardness, Vitamin A Supplementation Level, and Mineral Form
This study evaluated how corn grain hardness, vitamin A supplementation level, and trace mineral form influence production performance and egg properties in laying hens. In a 2 × 3 × 2 factorial design, 252 Lohmann Brown hens received diets containing soft- or hard-type corn hybrids; 5000, 10,000, or 20,000 IU/kg of vitamin A; and inorganic or organic trace minerals for 63 days. Hard-type corn increased daily egg mass, improved feed conversion ratio, and produced eggs with higher MUFAs and SFAs but lower PUFAs and n-3, resulting in a less favorable n6/n3 ratio, while also increasing susceptibility to Fe-induced lipid oxidation despite lower PUFAs. Increasing dietary vitamin A to 10,000–20,000 IU/kg increased egg weight and shell strength, linearly increased yolk retinol, and decreased tocols, with 20,000 IU/kg markedly increasing Fe-induced MDA formation without major changes in PUFAs. Trace mineral form had minor effects on performance and fatty acid profile. Overall, modest changes in laying hen diet, such as corn hybrid, vitamin A supplementation level, and trace mineral form, significantly modulated egg nutritional composition and oxidative stability. A high dietary vitamin A level may compromise the oxidative resilience of enriched eggs, while interactions of trace mineral form with corn hybrid and vitamin A suggest its potential modulatory role in lipid oxidation pathways.
- Open Access
- 21 July 2025
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 27 (4) , 313-321
Fitogeni pripravci u hranidbi životinja i njihov utjecaj na kvalitetu mesa
Phytogene Futtermittelzusatzstoffe in der Tierernährung werden zunehmend als vielversprechende Alternative zu synthetischen Zusatzstoffen und Antibiotika in der modernen Viehzucht angesehen. Dank eines breiten Spektrums bioaktiver Verbindungen mit antioxidativen, antimikrobiellen und immunmodulatorischen Eigenschaften können diese Zusatzstoffe die Tiergesundheit positiv beeinflussen und zu einer verbesserten Fleischqualität beitragen. Zu den wichtigsten Aspekten gehören die Verringerung der Lipidoxidation, die Stabilisierung und Veränderung des Fettsäureprofils bei gleichzeitiger Verringerung der gesättigten Fettsäuren und des Cholesterins, die Erhaltung von Farbe, Geschmack und Textur des Fleisches sowie die Verbesserung der mikrobiologischen Sicherheit. Die Verwendung phytogener Zusatzstoffe in der Geflügel-, Schweine- und Wiederkäuerproduktion hat positive Auswirkungen auf die Stabilisierung der Darmmikrobiota und die Verringerung der Prävalenz von Krankheitserregern gezeigt, was sich in einer verbesserten hygienischen Fleischqualität niederschlägt. Ihre breitere Anwendung ist jedoch mit gewissen Einschränkungen verbunden. Dazu gehören die chemische Variabilität, potenzielle toxische Wirkungen bei hohen Dosen, mögliche Wechselwirkungen mit anderen Futtermittelzusatzstoffen und die höheren Kosten für standardisierte Präparate. Der Rechtsrahmen der Europäischen Union verlangt eine klare wissenschaftliche Grundlage für die Zulassung solcher Zusatzstoffe, einschließlich Sicherheits- und Wirksamkeitsbewertungen. Die künftige Forschung sollte sich auf die Optimierung der Dosierung, die Standardisierung der Wirkstoffe und die Erforschung möglicher Synergien mit Probiotika und Präbiotika konzentrieren, um eine wirksame und sichere Verwendung phytogener Zusatzstoffe zur Verbesserung der Fleischqualität zu gewährleisten.
- 21 July 2025
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 27 (4) , 313-321
Open AccessFitogeni pripravci u hranidbi životinja i njihov utjecaj na kvalitetu mesa
Phytogene Futtermittelzusatzstoffe in der Tierernährung werden zunehmend als vielversprechende Alternative zu synthetischen Zusatzstoffen und Antibiotika in der modernen Viehzucht angesehen. Dank eines breiten Spektrums bioaktiver Verbindungen mit antioxidativen, antimikrobiellen und immunmodulatorischen Eigenschaften können diese Zusatzstoffe die Tiergesundheit positiv beeinflussen und zu einer verbesserten Fleischqualität beitragen. Zu den wichtigsten Aspekten gehören die Verringerung der Lipidoxidation, die Stabilisierung und Veränderung des Fettsäureprofils bei gleichzeitiger Verringerung der gesättigten Fettsäuren und des Cholesterins, die Erhaltung von Farbe, Geschmack und Textur des Fleisches sowie die Verbesserung der mikrobiologischen Sicherheit. Die Verwendung phytogener Zusatzstoffe in der Geflügel-, Schweine- und Wiederkäuerproduktion hat positive Auswirkungen auf die Stabilisierung der Darmmikrobiota und die Verringerung der Prävalenz von Krankheitserregern gezeigt, was sich in einer verbesserten hygienischen Fleischqualität niederschlägt. Ihre breitere Anwendung ist jedoch mit gewissen Einschränkungen verbunden. Dazu gehören die chemische Variabilität, potenzielle toxische Wirkungen bei hohen Dosen, mögliche Wechselwirkungen mit anderen Futtermittelzusatzstoffen und die höheren Kosten für standardisierte Präparate. Der Rechtsrahmen der Europäischen Union verlangt eine klare wissenschaftliche Grundlage für die Zulassung solcher Zusatzstoffe, einschließlich Sicherheits- und Wirksamkeitsbewertungen. Die künftige Forschung sollte sich auf die Optimierung der Dosierung, die Standardisierung der Wirkstoffe und die Erforschung möglicher Synergien mit Probiotika und Präbiotika konzentrieren, um eine wirksame und sichere Verwendung phytogener Zusatzstoffe zur Verbesserung der Fleischqualität zu gewährleisten.
- Open Access
- 22 March 2025
- Published by Elsevier in Applied Food Research
- Vol. 5 (1)
Carotenoid stability in grains of maize hybrids compared to complete feeds for laying hens following preparation and storage
- 22 March 2025
- Published by Elsevier in Applied Food Research
- Vol. 5 (1)
Open AccessCarotenoid stability in grains of maize hybrids compared to complete feeds for laying hens following preparation and storage
- Open Access
- 23 January 2025
- Published by Elsevier in Poultry Science
- Vol. 104 (3) , 104843
Effect of supplementing corn diet for laying hens with vitamin A and trace minerals on carotenoid content and deposition efficiency in egg yolk
- 23 January 2025
- Published by Elsevier in Poultry Science
- Vol. 104 (3) , 104843
Open AccessEffect of supplementing corn diet for laying hens with vitamin A and trace minerals on carotenoid content and deposition efficiency in egg yolk
- Open Access
- 21 October 2024
- Published by Hrvatsko Agronomsko Drustvo in Stočarstvo
- Vol. 78 (1-2) , 3-14
Upotreba mikrobnih enzima u bioremedijaciji
Applied microbiology is one of the fundamental branches of biotechnology, as it plays a role in the production and isolation of products obtained or used from microorganisms. The major products of microorganisms include microbial enzymes, microbial biomass, metabolites and compounds derived from microbial transformation. Large amounts of microbial enzymes are produced on an industrial scale, especially hydrolytic enzymes, i.e., amylases, proteinases, lipases, cellulases, and others. These enzymes are used in various industries, but due to increasing environmental pollution and the need to remediate contaminated soils, they are also successfully used in bioremediation process. In bioremediation, microorganisms (and their enzymes) are used to reduce the concentration of pollutants in the soil, usually by degrading them to less or non-harmful products (carbon dioxide, water and biomass).
- 21 October 2024
- Published by Hrvatsko Agronomsko Drustvo in Stočarstvo
- Vol. 78 (1-2) , 3-14
Open AccessUpotreba mikrobnih enzima u bioremedijaciji
Applied microbiology is one of the fundamental branches of biotechnology, as it plays a role in the production and isolation of products obtained or used from microorganisms. The major products of microorganisms include microbial enzymes, microbial biomass, metabolites and compounds derived from microbial transformation. Large amounts of microbial enzymes are produced on an industrial scale, especially hydrolytic enzymes, i.e., amylases, proteinases, lipases, cellulases, and others. These enzymes are used in various industries, but due to increasing environmental pollution and the need to remediate contaminated soils, they are also successfully used in bioremediation process. In bioremediation, microorganisms (and their enzymes) are used to reduce the concentration of pollutants in the soil, usually by degrading them to less or non-harmful products (carbon dioxide, water and biomass).
- Open Access
- 15 July 2024
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 26 (4) , 336-344
Use of Herbal Feed Additives to Enhance Meat and Yolk Color in Poultry
Diese Arbeit zeigt die Verwendung von pflanzlichen Futtermittelzusätzen zur Verbesserung der Fleisch- und Dotterfarbe bei Geflügel, wobei der Schwerpunkt auf in Indien durchgeführten Studien liegt. Der wachsende Wunsch nach natürlichen und sicheren Hühnerprodukten hat Forscher dazu veranlasst, sich mit alternativen Futtermittelzusatzstoffen zu befassen, insbesondere mit pflanzlichen, die in Indien aufgrund der reichen biologischen Vielfalt und der Traditionen der Kräutermedizin reichlich vorhanden sind. Der Artikel fasst die Ergebnisse mehrerer indischer Studien zusammen und konzentriert sich dabei auf wesentliche pflanzliche Zusatzstoffe wie Kurkuma, Paprika, Ringelblume usw. Der Artikel untersucht, wie diese Chemikalien die Farbe beeinflussen, die zugrundeliegenden Mechanismen, den potenziellen Nutzen und die Grenzen sowie künftige Forschungsmöglichkeiten in Indien. Die indische Forschung bietet einzigartige Einblicke in die Vorteile pflanzlicher Futtermittelzusatzstoffe, die zum weltweiten Trend einer natürlichen und nachhaltigen Geflügelproduktion beitragen. Dieser Artikel unterstreicht das Potenzial von pflanzlichen Zusätzen zur Verbesserung der Qualität von Geflügelprodukten und zur Erfüllung der Kundennachfrage nach natürlichen, gesundheitsfördernden Lebensmitteln.
- 15 July 2024
- Published by Zadruzna Stampa D.D. in Meso
- Vol. 26 (4) , 336-344
Open AccessUse of Herbal Feed Additives to Enhance Meat and Yolk Color in Poultry
Diese Arbeit zeigt die Verwendung von pflanzlichen Futtermittelzusätzen zur Verbesserung der Fleisch- und Dotterfarbe bei Geflügel, wobei der Schwerpunkt auf in Indien durchgeführten Studien liegt. Der wachsende Wunsch nach natürlichen und sicheren Hühnerprodukten hat Forscher dazu veranlasst, sich mit alternativen Futtermittelzusatzstoffen zu befassen, insbesondere mit pflanzlichen, die in Indien aufgrund der reichen biologischen Vielfalt und der Traditionen der Kräutermedizin reichlich vorhanden sind. Der Artikel fasst die Ergebnisse mehrerer indischer Studien zusammen und konzentriert sich dabei auf wesentliche pflanzliche Zusatzstoffe wie Kurkuma, Paprika, Ringelblume usw. Der Artikel untersucht, wie diese Chemikalien die Farbe beeinflussen, die zugrundeliegenden Mechanismen, den potenziellen Nutzen und die Grenzen sowie künftige Forschungsmöglichkeiten in Indien. Die indische Forschung bietet einzigartige Einblicke in die Vorteile pflanzlicher Futtermittelzusatzstoffe, die zum weltweiten Trend einer natürlichen und nachhaltigen Geflügelproduktion beitragen. Dieser Artikel unterstreicht das Potenzial von pflanzlichen Zusätzen zur Verbesserung der Qualität von Geflügelprodukten und zur Erfüllung der Kundennachfrage nach natürlichen, gesundheitsfördernden Lebensmitteln.
- Open Access
- 31 May 2024
- Published by Elsevier in Poultry Science
- Vol. 103 (8) , 103922
Carotenoid deposition in yolks of laying hens fed with corn diets differing in grain hardness and supplemented with rapeseed oil and emulsifier
- 31 May 2024
- Published by Elsevier in Poultry Science
- Vol. 103 (8) , 103922
Open AccessCarotenoid deposition in yolks of laying hens fed with corn diets differing in grain hardness and supplemented with rapeseed oil and emulsifier
- Open Access
- 14 May 2024
- Published by Hrvatsko Agronomsko Drustvo in Krmiva
- Vol. 66 (1) , 37-43
Utilization of sunflower heads as a component of animal feed production
The sunflower (Helianthus annuus L.) is the most important oil plant in the Republic of Croatia for the production of edible oil from seeds. Subsequent to the oil production, the utilizable biomass of postharvest residues remains, being used for the production of solid biofuels, as well as the sunflower heads, which can be used as the ingredients for the production of animal feed. The aim of this study was to determine the physical and chemical properties of the sunflower head with seeds in order to be able to use the whole head in animal feed. The sunflower head, which usually has a diameter of 10 to 40 cm, contains 7% of protein, 16% of fiber, and 4% of oil subsequent to the separation of the seeds, while the sunflower seed contains 38 to 45% of oil and many unsaturated fatty acids, being a valuable source of vitamins. By processing the seeds after extraction, a protein-rich cake, or meal, is obtained, which is also a high-quality animal feed. Three sunflower hybrids were used for the study: Alexa SU, Driver CL, and Surimi CL. The results demonstrate that the Surimi CL hybrid has better physical properties due to a larger head diameter and weight. The Alexa SU hybrid had better chemical properties, as it had a higher starch content and a lower water content and therefore should not be thermically treated before use, while the Driver CL hybrid had the highest fat content and the lowest ash content (p<0,05).
- 14 May 2024
- Published by Hrvatsko Agronomsko Drustvo in Krmiva
- Vol. 66 (1) , 37-43
Open AccessUtilization of sunflower heads as a component of animal feed production
The sunflower (Helianthus annuus L.) is the most important oil plant in the Republic of Croatia for the production of edible oil from seeds. Subsequent to the oil production, the utilizable biomass of postharvest residues remains, being used for the production of solid biofuels, as well as the sunflower heads, which can be used as the ingredients for the production of animal feed. The aim of this study was to determine the physical and chemical properties of the sunflower head with seeds in order to be able to use the whole head in animal feed. The sunflower head, which usually has a diameter of 10 to 40 cm, contains 7% of protein, 16% of fiber, and 4% of oil subsequent to the separation of the seeds, while the sunflower seed contains 38 to 45% of oil and many unsaturated fatty acids, being a valuable source of vitamins. By processing the seeds after extraction, a protein-rich cake, or meal, is obtained, which is also a high-quality animal feed. Three sunflower hybrids were used for the study: Alexa SU, Driver CL, and Surimi CL. The results demonstrate that the Surimi CL hybrid has better physical properties due to a larger head diameter and weight. The Alexa SU hybrid had better chemical properties, as it had a higher starch content and a lower water content and therefore should not be thermically treated before use, while the Driver CL hybrid had the highest fat content and the lowest ash content (p<0,05).