Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi !

The influence of eggshell as calcium source on egg and bone characteristics and serum profile of aged laying hens (CROSBI ID 652624)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Kis, Goran ; Janjecic, Zlatko ; Bedekovic, Dalibor ; Salajpal Kresimir The influence of eggshell as calcium source on egg and bone characteristics and serum profile of aged laying hens // The Proceedings of XXV World's Poultry Congress / Ning Yang, Ling Lian, Jiangxia Zheng, Xiangping Liu and Changxin Wu (ur.). Peking: World's Poultry Science Association, Association of Animal Science and Veterinary Medicine, 2016. str. 37-37

Podaci o odgovornosti

Kis, Goran ; Janjecic, Zlatko ; Bedekovic, Dalibor ; Salajpal Kresimir

engleski

The influence of eggshell as calcium source on egg and bone characteristics and serum profile of aged laying hens

This experiment was conducted to determine the effects of eggshell as calcium source in aged laying hen diets on laying performance, egg and eggshell quality, serum Ca and P concentration and bone characteristics. A total of seventy five ISA Hisex Brown laying hens, were assigned to five treatment diets ; including 100% limestone as control, 100% eggshell (particle size 2, 0 mm and 0, 5 mm) and 50% limestone with 50% eggshell both particle size respectively. Each treatment had five replicates with three hens each. After two weeks of acclimation, the birds were fed the experimental diets for five week. Initial and final body weights, feed consumption and feces production was recorded. Eggs production, weight and quality characteristics were measured. Serum Ca concentrations level were determined and finally, tibia contents of Ca and P concentrations were analyzed. Beside some differences among hens results of this experiment indicated that, there was no significant effect of dietary treatment on body weight and feed consumption. Replacing limestone in the experimental diets with fine and coarse ground, sterilized eggshell had no significant effect on egg production, egg weight and eggshell quality between treatments. Serum Ca concentration had the most significantly increase (p=0, 002) in hens fed diet with 100 % coarse eggshell. The same treatment also caused the most significant increase (p=0, 022) in the P content and decrease (p=0, 047) of Ca content in tibia in relation to other treatments. It can be concluded that hatchery waste, as chicken egg shells, can be used as cheap and ecologically advisable Ca source in layer diets without an adverse effect on body weight, feed consumption, egg weight, egg production, egg and eggshell quality. Furthermore coarse grinding of eggshell the most effects on serum and bone mineralization, so more researches of this natural Ca source in aged laying hens are recommended.

Calcium source, eggshell, laying hens

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

37-37.

2016.

objavljeno

Podaci o matičnoj publikaciji

The Proceedings of XXV World's Poultry Congress

Ning Yang, Ling Lian, Jiangxia Zheng, Xiangping Liu and Changxin Wu

Peking: World's Poultry Science Association, Association of Animal Science and Veterinary Medicine

Podaci o skupu

XXV World's Poultry Congress 2016

poster

05.09.2016-09.09.2016

Peking, Kina

Povezanost rada

Poljoprivreda (agronomija)