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The experiment was carried out with 60 TETRA BLANCA laying hens chosen from 250 TETRA BLANCA pullets based on their body fat content, predicted at 16 weeks of age by means of computer tomography (CT). Pullets with the highest (n=20), lowest (n=20) and average (n=20) body fat content were chosen for the investigation. Changes in the body fat content of the experimental animals were followed by means of computer tomography in vivo, scanning the hens at every fourth week of the experiment, between 20 and 72 weeks of age. Eggs produced by these birds, were collected at 32, 52 and 72 weeks of age and, after breaking them, their yolk, albumen and egg shell ratio was determined and their dry matter, crude protein and crude fat content was chemically analyzed. Based on the results it was established that the body fat content of the hens started the egg production with high body fat content being higher than that of the hens started the egg production with average or low body fat content during the whole experimental period. The differences in the body fat content of the two extreme groups were statistically proven between 24 and 48 weeks of age (P0.05) by the starting body fat content of the hens.

In this paper authors reviewed the history of the International Symposium „Animal Science Days” from the beginning up to now. After showing the antecedents of this scientific meeting the places and topics of the former symposiums were demonstrated. After reviewing the development of this event in the last 18 years, collaborations based on the quadrilateral cooperation of the partner universities were demonstrated. As results of these scientific cooperations common publications and also the importance of collaboration in the field of education were evaluated. For further collaborations the fields of common interests and also the internationally available funding were demonstrated. Based on this review it was concluded that “Animal Science Days” symposium contributed significantly to the scientific and educational life of each partner university and the agriculture of the Alps-Adriatic region. The partner universities have further possibilities to extend their collaborations, but a joint lobby for creating new funding possibilities would be a great help for them., U ovom radu prikazana je povijest odvijanja međunarodnog znanstvenog simpozija „Stočarski znanstveni dani” od njegovog početka do danas. Nakon prikaza samog početka ovog simpozija, pobrojana su mjesta i teme kojima su se bavili dosadašnji simpoziji. Također prikazana je suradnja između sveučilišta koja sudjeluju u organizaciji ovog simpozija. Kao rezultat te suradnje objavljen je velik broj zajedničkih publikacija te je naglašeno značenje suradnje u polju edukacije. Također su navedene područja moguće suradnje u budućnosti kao i mogućnosti korištenja međunarodnih izvora financiranja simpozija. na osnovu ovog pregleda može se zaključiti da „stočarski znanstveni dani” daju značajan doprinos poboljšanju znanstvene i nastavne kvalitete na partnerskim sveučilištima kao i poljoprivredi uopće na području regije Alpe –adira. Partnerska sveučilišta imaju mogućnosti proširenja suradnje, ali je pri tome potrebno zajedničko lobiranje za dobivanje sredstava koja bi im pomogla u tome.

In this paper authors reviewed the history of the International Symposium „Animal Science Days” from the beginning up to now. After showing the antecedents of this scientific meeting the places and topics of the former symposiums were demonstrated. After reviewing the development of this event in the last 18 years, collaborations based on the quadrilateral cooperation of the partner universities were demonstrated. As results of these scientific cooperations common publications and also the importance of collaboration in the field of education were evaluated. For further collaborations the fields of common interests and also the internationally available funding were demonstrated. Based on this review it was concluded that “Animal Science Days” symposium contributed significantly to the scientific and educational life of each partner university and the agriculture of the Alps-Adriatic region. The partner universities have further possibilities to extend their collaborations, but a joint lobby for creating new funding possibilities would be a great help for them., U ovom radu prikazana je povijest odvijanja međunarodnog znanstvenog simpozija „Stočarski znanstveni dani” od njegovog početka do danas. Nakon prikaza samog početka ovog simpozija, pobrojana su mjesta i teme kojima su se bavili dosadašnji simpoziji. Također prikazana je suradnja između sveučilišta koja sudjeluju u organizaciji ovog simpozija. Kao rezultat te suradnje objavljen je velik broj zajedničkih publikacija te je naglašeno značenje suradnje u polju edukacije. Također su navedene područja moguće suradnje u budućnosti kao i mogućnosti korištenja međunarodnih izvora financiranja simpozija. na osnovu ovog pregleda može se zaključiti da „stočarski znanstveni dani” daju značajan doprinos poboljšanju znanstvene i nastavne kvalitete na partnerskim sveučilištima kao i poljoprivredi uopće na području regije Alpe –adira. Partnerska sveučilišta imaju mogućnosti proširenja suradnje, ali je pri tome potrebno zajedničko lobiranje za dobivanje sredstava koja bi im pomogla u tome.

Pannon White rabbits of average ± 1 S.D. live weight at 10 weeks and of average ± 1 S.D. daily weight gain between 6 and 10 weeks of age were chosen from the experimental stock of our university, and their fat content was determined with an EM-SCAN SA-3152 type small animal body composition analyser (by means of TOBEC method) at 10 weeks of age. Based on the fat content determined, the best and worst 16% of the does and the best and worst 8% of the bucks were chosen and mated with each other (fatty doe with fatty buck and lean doe with lean buck). Their offspring were examined by computer tomography (CT) weekly between 6 and 11 weeks of age. Cross-sectional images (scans) were taken from the scapular arch to the end of the femur on each animal. From this scans the amount of fat was determined and its ratio to the total amount of body was calculated in the scapular, perirenal and pelvic region. In the most cases it was established that the total body fat content and also fat content in the scapular, perirenal and pelvic regions are significantly higher in the offspring of fatty rabbits as in the offspring of non-fatty ones. In the group of non-fatty rabbits the scapular fat increased intensively from the age of 7 weeks. The perirenal fat content began to grow rapidly at 8 weeks in fatty group and at 10 weeks of age in the non-fatty rabbits. Based on the results of this experiment TOBEC method seems to be a useful thing for selecting rabbits based on their body fat content.

Pannon White rabbits of average ± 1 S.D. live weight at 10 weeks and of average ± 1 S.D. daily weight gain between 6 and 10 weeks of age were chosen from the experimental stock of our university, and their fat content was determined with an EM-SCAN SA-3152 type small animal body composition analyser (by means of TOBEC method) at 10 weeks of age. Based on the fat content determined, the best and worst 16% of the does and the best and worst 8% of the bucks were chosen and mated with each other (fatty doe with fatty buck and lean doe with lean buck). Their offspring were examined by computer tomography (CT) weekly between 6 and 11 weeks of age. Cross-sectional images (scans) were taken from the scapular arch to the end of the femur on each animal. From this scans the amount of fat was determined and its ratio to the total amount of body was calculated in the scapular, perirenal and pelvic region. In the most cases it was established that the total body fat content and also fat content in the scapular, perirenal and pelvic regions are significantly higher in the offspring of fatty rabbits as in the offspring of non-fatty ones. In the group of non-fatty rabbits the scapular fat increased intensively from the age of 7 weeks. The perirenal fat content began to grow rapidly at 8 weeks in fatty group and at 10 weeks of age in the non-fatty rabbits. Based on the results of this experiment TOBEC method seems to be a useful thing for selecting rabbits based on their body fat content.