Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  cock
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

The effect of breed on freezability of semen of fancy fowl

100%
Siudzinska A., Lukaszewicz E.
Animal Science Papers and Reports
|
2008
|
tom 26
|
nr 4
A simple cryopreservation method described in 1995 by Tselutin et al. was used for freezing the semen of four fancy fowl breeds: White Crested Black Polish (WCBP), Greenleg Partridge (GP),Italian Partridge (IP) and Black Minorca (BP). The differences in quality (ejaculate volume,osmotic pressure, sperm concentration and morphology) of fresh semen between evaluated breeds were observed, as well as the differences in semen freezability. The freezing-thawing process caused significant (P≤0.01) decrease in percentage of live, normal spermatozoa, with coincident increase in percentage of dead spermatozoa and spermatozoa with acrosome defect. In relation to the fresh semen, the number of live, normal spermatozoa that survived cryopreservation procedure constituted 18.1% in WCBP, 25.1% in GP, 26.2% in IP and 33.6% in BM semen.
2

Testicular activity of arylsulphatase in cocks of different breeds

100%
Jozefczyk R., Droba M.
Roczniki Naukowe Zootechniki
|
2000
|
tom 27
|
nr 4
3

Testicular activity of acid glycosidases in cocks of different breeds

100%
Droba B.
Roczniki Naukowe Zootechniki
|
2000
|
tom 27
|
nr 4
4

Service cock only indirectly affects hatchability in laying hens

84%
Rozempolska-Rucinska I., Zieba G., Lukaszewicz M.
Animal Science Papers and Reports
|
2010
|
tom 28
|
nr 2
The purpose of the study was to investigate the effect of service sire on fertilization rate and loses during hatching as a way of increasing the accuracy of breeding value estimation of layers for hatchability. Layers from five generations of two breeds – Rhode Island White and Rhode Island Red – were individually recorded for fertilization rate, percentage of chicks hatched from eggs laid,set, and fertilized. Two statistical models, both fitting random animal additive genetic and permanent environment effects along with fixed joint effect of hatch-year × hatch-number, differed with regard to presence or absence of random effect of service sire. Of the traits studied fertilization rate is least influenced by service sire which can be neglected when evaluating fertilization. Although sernice sire effect is small, both absolutely and relatively, failing to account for it in a model evaluating number of chicks hatched may result in substantial overestimation of heritability. Service sire effect accounted for in the model can also add to the accuracy of the hens’ proofs for hatchability.Correlation between direct additive and service sire effects may be dependent on the population it is estimated in.
5

Fowl typhoid in cocks. Age-dependent susceptibility of the birds disease

84%
Chacana P. A., Terzolo H. R.
Advances in Agricultural Sciences
|
2006
|
tom 10
6

Effects of tamoxifen dose and nutrition scheme during growth on stimulation of the reproductive system in Cornish breed cocks

67%
Lisowski M., Bednarczyk M.
Folia Biologica
|
2005
|
tom 53
|
nr 1-2
7

A new reference family [Green-legged Partrigenous x Rhode Island Red] for mapping QTLs laying hens

67%
Jaszczak K., Wardecka B., Olszewski R., Zieba G., Pierzchala M.
Animal Science Papers and Reports
|
2001
|
tom 19
|
nr 2
8

Food deprivation of domestic fowl affects oxygen consumption, plasma glucose, free fatty acids and thyroid hormones

59%
Abdel-Fattah K. I., Bobek S., Sechman A., Kugiel M., Niezgoda J.
Acta Agraria et Silvestria. Series Zootechnica
|
1992
|
tom 30
53-64
9

Effect of non starch polysaccharides of cereal grains on digestibility and intestinal microflora of chickens and geese

59%
Wiliczkiewicz A., Orda J., Jamroz D., Skorupinska J.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
|
2005
|
tom 08
|
nr 4
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.