Effects of nutritional environment and ram effect on breeding season in range sheep

Effects of nutritional environment and ram effect on breeding season in range sheep

Effects of season, nutritional environment, and presence of rams on incidence and rate of ovulation in fine-wool sheep in southern New Mexico were investigated over 14 months (February 1983–March 1984). Number of corpora lutea (CL) were observed each month by laparoscopy in random samples from six e...

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Veröffentlicht in:Theriogenology 1986-02, Vol.25 (2), p.317-323
Hauptverfasser: Hulet, C.V., Shupe, W.L., Ross, T., Richards, W.
Format: Artikel
Sprache:eng
Schlagworte:
BELIER
breeding season
BREEDING SEASONS
EPOCA DE APAREAMIENTO
MORUECO
NUTRICION
NUTRITION
OVIN
OVINOS
OVULACION
OVULATION
PASTIZALES
PASTURES
PATURAGES
ram effect
RAMS
range sheep
SAISON D'ACCOUPLEMENT
SHEEP
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Beschreibung
Zusammenfassung:Effects of season, nutritional environment, and presence of rams on incidence and rate of ovulation in fine-wool sheep in southern New Mexico were investigated over 14 months (February 1983–March 1984). Number of corpora lutea (CL) were observed each month by laparoscopy in random samples from six ewes in each subgroup. Seasonality of ovulation in fine-wool sheep managed on range was much more marked than in animals managed on alfalfa hay in drylot. Incidence of ovulation approached zero in range-managed ewes during May, June, and July (8%, 0%, 4%) but was higher (P
ISSN:0093-691X
1879-3231
DOI:10.1016/0093-691X(86)90067-1