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Haemonchus contortus susceptibility and resistance to anthelmintics in naturally infected Egyptian sheep

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Aboelhadid S. M., Arafa W. M., El-Ashram S., Noaman A. F., Shokier K. A., Darwish A. B., Mahmoud M. M., Gadelhaq S. M.

Acta Parasitologica

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2021

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tom 66

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nr 2

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Gastrointestinal nematodes infections and anthelmintic resistance in grazing sheep in the Eastern Inner Mongolia in China

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Han T., Wang M., Zhang G., Han D., Li X., Liu G., Li X., Wang Z.

Acta Parasitologica

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2017

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tom 62

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nr 4

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The rate of egg laying and hatching of the slug Arion lusitanicus Mabille, a pest of arable crops

100%

Kozlowski J., Sionek R.

Journal of Plant Protection Research

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2000

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tom 40

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nr 2

The experiments were carried out in Rzeszów, a region of the Arion lusitanicus mass occurrence, and also in Poznań. The studies were performed under field conditions, in isolators dug inio the ground. It was found that the slug began egg laying by the end of the first decade of August. The period of egg laying, depending on meteorological conditions, lasted for 2-3.5 months. The eggs were laid in clutches, each containing from 5 to 193 eggs. Most of eggs laid in August hatched before winter. For the eggs laid in mid-August the period of hatching was shorter than those laid at the turn of August/September, and the percentage of hatched eggs was lower. Eggs deposited at later dates (in September-November) did not hatch before winter.

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A note on inbreeding effect on productive and reproductive traits in laying hens

100%

Szwaczkowski T., Cywa-Benko K., Wezyk S.

Animal Science Papers and Reports

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2003

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tom 21

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nr 2

Inbreeding rate and effects on production (body weight, age at first egg, egg weight), and reproduction (per cent of eggs fertilized, per cent of eggs hatched as related to eggs set) traits were evaluated in 9194 layers belonging to two strains. The individual inbreeding coefficients were calculated using Wright’s formula from available performance records across nine generations. The inbreeding effects (including linear covariable) were estimated by derivative-free restricted maximum likelihood algorithm under an animal model. In general, the inbreeding level appeared relatively low in both populations. The inbreeding depressions for the traits studied (except per cent of eggs fertilized) were found low. The heritability estimates of productive and reproductive traits corresponded with those reported in literature.

Ograniczanie wyników

2 Acta Parasitologica

1 Animal Science Papers and Reports

1 Journal of Plant Protection Research

1 Aboelhadid S. M.

1 Arafa W. M.

1 Cywa-Benko K.

1 Darwish A. B.

1 El-Ashram S.

1 Gadelhaq S. M.

1 Han D.

1 Han T.

1 Kozlowski J.

1 Li X.

1 Liu G.

1 Mahmoud M. M.

1 Noaman A. F.

1 Shokier K. A.

1 Sionek R.

1 Szwaczkowski T.

1 Wang M.

1 Wang Z.

1 Wezyk S.

1 Zhang G.

1 2021

1 2017

1 2003

1 2000

Haemonchus contortus susceptibility and resistance to anthelmintics in naturally infected Egyptian sheep

Gastrointestinal nematodes infections and anthelmintic resistance in grazing sheep in the Eastern Inner Mongolia in China

The rate of egg laying and hatching of the slug Arion lusitanicus Mabille, a pest of arable crops

A note on inbreeding effect on productive and reproductive traits in laying hens