Wykorzystanie wczesnych etapow rozwoju zarodkowego do analizy wartosci wylegowej jaj indyczych

• Autorzy: Orlowska A , Mroz E. , Franczak A.

Warianty tytułu

EN

Analysis of the hatching value of turkey eggs at early stages of embryo development

• Języki publikacji: PL

Abstrakty

EN

The objective of the study was to demonstrate which measurements of the embryo during the gastrulation phase can be used for estimating their degree of development and determine the hatching value of turkey eggs. The study was performed on hatching eggs of heavy white broad-breasted turkeys, from the 16th, 20lh and 24th week of the laying season. The embryo structure was examined on the third day of incubation, at eighthour intervals. The shape and diameter of germinal discs, embryo length, and the width of the vasculosa area, head and tail regions were determined visually, while the number of somite pairs - under a microscope. The shape of germinal discs changed from round to flat, and their diameter increased during incubation. Embryo length, the width of the head region, and the number of somite pairs increased at eight-hour intervals. The tail region width was smaller in the 72nd hour, compared with the 56th and 64th hour of incubation, and showed wide variation. These measurements indicate progress in development and changes in embryo position. Body measurements of embryos in eggs from the 24th week of the laying season were greater, compared with the 16th week. The only exception was the width of the tail region. Worse hatching results were a consequence of a lower egg fertilization rate and increased embryo mortality between the 11th and 24th days of incubation. To estimate the degree of development of the embryo and hatching value of eggs the following measurements can be used: the shape and diameter of the germinal disc, embryo length, and the width of the head region. These embryo features were characterized by lower variation in comparison to the others. Embryonic development in older turkey eggs proceeded rapidly and final hatching results were worse.

Słowa kluczowe

PL

indyki; jaja indycze; embriogeneza; drob; ocena; wartosc wylegowa

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 2006
• Tom: 62
• Numer: 04
• Opis fizyczny: s.416-419,tab.,bibliogr.

Twórcy

autor

Orlowska A

• Uniwersytet Warminsko-Mazurski, ul.Oczapowskiego 5, 10-719 Olsztyn

autor

Mroz E.

autor

Franczak A.

Bibliografia

• 1.Bakst M. R., Gupta S. K., Akuffo V.: Coparative development of the turkey and chicken embryo from cleavage through hypoblast formation. Poultry Sci. 1997, 76, 83-90.
• 2.Bielañska-Osuchowska Z.: Zarys organogenezy. Różnicowanie się komórek w narządach. PWN, Warszawa 2004.
• 3.Bielañska-Osuchowska Z.: Embriologia. PWRiL, Warszawa 2001.
• 4.Cherms F. L.: Development of the turkey embryo. World's Poultry Sci. J. 1980, 36, 264. 5.Dziaczkowska L., Faruga A.: Klucz do oznaczania wieku embrionów indyczych. Wydanie własne COBRD, Poznañ 1983.
• 6.Eyal-Giladi H., Kochav S.: From cleavage to primitive streak formation. A complementary normal table and a new look at the first stages of the development of the chick. I. General morphology. Dev. Biol. 1976, 49, 321-337.
• 7.Faruga A., Jankowski J.: Indyki hodowla i użytkowanie. PWRiL, Warszawa 1996.
• 8.Faruga A., Pudyszak K., Puchajda H., Jankowski J., Kozłowski K.: Charakterystyka jakości jaj w zależności od okresu nieśności i pochodzenia indyków. Zesz. Nauk. Prz. Hod. 1996, 24, 91-99.
• 9.Gupta S. K., Bakst M. R.: Turkey embryo staging from cleavage through hypoblast formation. J. Morphol. 1993, 217, 313-325.
• 10.Hamburger V., Hamilton H. L.: A series of normal stages in the development of the chick embryo. J. Morphol. 1951, 88, 49-92.
• 11.Mróz E., £epek G.: A biological evaluation of hatches in different phases of goose egg production. Pol. J. Natur. Sc. 2003, 13, 115-123.
• 12.Mróz E., Pudyszak K.: Analiza wyników wylęgowości i jakości jednodniowych indycząt w zależności od wieku indyczek. Zesz. Nauk. Prz. Hod. 1997, 32, 97-102.
• 13.Niespodziewañski M.: Zależność między porą zniesienia jaja w ciągu dnia a wielkością tarczki zarodkowej przed lęgiem i po 36 godzinach lęgu. Zesz. Nauk. Prz. Hod. 1991, 95-104.
• 14.Stępiñska U., Olszañska B.: Cell multiplication and blastoderm development in relation to egg envelope formation during uterine development of quail (Coturnix coturnix japonica) embryo. J. Exp. Zool. 1983, 228, 505-510.
• 15.Tazawa H., Whittow G. C.: Incubation Physiology, [w:] Sturkie's Avian Physiology. Academic Press, San Diego 2000, 617-634.