Results 261 to 270 of about 110,523 (313)
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Photoperiodic Regulation of Seasonal Breeding in Birds

Annals of the New York Academy of Sciences, 2005
Abstract: Day length‐dependent breeding in birds commonly occurs in spring and summer, but may occur after exposure to complex changes in day length, as for example in transequatorial migrants. More rarely, some photoperiodic birds breed when day lengths are decreasing or are short.
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Breeding season of Octopus vulgaris

Marine Biology, 1972
Female Octopus vulgaris Cuvier mated in the laboratory in every month tested. Females maintained in isolation after capture and not mated in the laboratory laid eggs, fertile and infertile, each month of the year. The longest period of sperm viability was 104 days. Young specimens weighing between 4.0 and 66.0 g were found regularly.
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Studies on the breeding season and reproduction of the ewe Part I. The breeding season in different environments Part II. The breeding season in one locality

The Journal of Agricultural Science, 1952
A knowledge of the exact length of the breeding season for improved breeds under different environmental conditions in this country is lacking. Such knowledge is of importance so that the lambing season can be arranged according to farm conditions.
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Breeding seasons

2001
Bridget J.M. Stutchbury   +1 more
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Out-of-season breeding in sheep

Veterinary Record, 1969
J E, Betts, J E, Newton, H L, Denehy
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Effect of breed and age of buck and season of breeding on reproduction

Tropical Animal Health and Production, 1983
R K, Misra   +3 more
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