Environmental Factors Affecting Reproduction

Clegg, M. T.; Ganong, William F.

doi:10.1016/b978-0-12-179251-0.50022-6

Cited by 10 publications

(5 citation statements)

References 65 publications

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“…The higher foahmare ratio of females with access to revegetated areas implies increased reproductive value with increasing nutritional resources. Clegg and Ganong (1969) found that domestic mares would breed at any season if well fed. Hall (1972) relates reproductivity to nutrition in the Pryor Mountain feral horse population, since foaling coincided with the onset of spring growth of vegetation.…”

Section: Future Researchmentioning

confidence: 99%

Sterilization of dominant males will not limit feral horse populations /

Nelson¹

1980

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Sterilization of dominant stallions is impractical for controlling feral horse populations. Evidence does not support the premise that reproductive units are stable, with one male and many females. Individual horses, including reproductively active females, move between bands during the breeding season. Permanent or temporary sterilization of the dominant stallion in a feral horse herd has been suggested to control horse populations. This control method would work only if bands of horses were stable, if reproductive units consisted of one male and many females, and if females did not move between bands. A study of the behavior of bands of horses from the Jicarilla herd shows that female fidelity is weak or nonexistent and that some breeding in the bands is by subdominant males. The amount of sterilization that would have to be done to control horse numbers indicates that the technique is not practical. Another reason to avoid selective sterilization of dominant males is that these animals represent the best genetic material for the population.vada Agricultural Experiment Station, R 127, 110 p.

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Section: Future Researchmentioning

confidence: 99%

Sterilization of dominant males will not limit feral horse populations /

Nelson¹

1980

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“…Wild mares may show sexual receptivity throughout the year but they do not necessarily breed all year round (Berliner, 1958;Hafez et al, 1969). Clegg and Ganong (1969) report that domestic mares will breed at any season if they are well fed. When mares are maintained on grass they frequently show anestrous during the winter.…”

Section: Influence Of Horses On Historymentioning

confidence: 99%

“…The mare is predominantly a spring breeder; therefore she would be expected to respond to increasing rather than decreasing day length (Clegg and Ganong, 1969). A wild mare will go barren until the following year if she is not bred in the spring or early summer (Feist, 1971).…”

Section: Influence Of Horses On Historymentioning

confidence: 99%

Wild, free-roaming horses : status of present knowledge

Zarn¹,

Collins²,

Heller³

1977

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“…Both Grant's and Grevy's zebra breed throughout the year, and peak foaling in Grant's zebra occurs from January to March (King, 1965). Clegg and Ganong (1969) cite many observations which indicate that domestic mares will breed at any season if they are well fed.…”

Section: Nishikawamentioning

confidence: 99%