Conception failure in swine: importance of the sex ratio of a female's birth litter and tests of other factors

Failure of gilts and sows to conceive when they are mated is a potentially serious economic cost for swine producers. In Exp. 1, we determined that anogenital distance of newborn gilts is related to the proportion of males in the litter (P .001). Gilts from litters with more males have larger anogen...

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Veröffentlicht in:	Journal of animal science 1997-08, Vol.75 (8), p.2192-2196
Hauptverfasser:	Drickamer, L.C, Arthur, R.D, Rosenthal, T.L
Format:	Artikel
Sprache:	eng
Schlagworte:	ACCOUPLEMENT AGE Age Factors Animal productions Animal reproduction Animals Animals, Newborn - anatomy & histology Animals, Newborn - physiology ANOGENITAL DISTANCE Biological and medical sciences BIRTH LITTER SEX RATIO BODY MEASUREMENTS Breeding Breeding of animals CERDAS CONCEPTION RATE COPULA COPULATION EDAD Female Fertilization - physiology Fundamental and applied biological sciences. Psychology GESTATION MULTIPLE GILTS Hogs Incidence Infertility, Female - economics Infertility, Female - physiopathology Infertility, Female - veterinary Insemination, Artificial - methods Insemination, Artificial - veterinary INTRAUTERINE POSITION LITTER SIZE Male MALE BIASED LITTERS MEDICION DEL CUERPO MENSURATION CORPORELLE MULTIPLE BIRTHS PARTO PARTOS MULTIPLES PARTURITION PERFORMANCE DE REPRODUCTION POSITION Pregnancy Pregnancy Rate PROPORCION DE LOS SEXOS REPRODUCTIVE PERFORMANCE REPRODUCTIVIDAD SEASONAL VARIATION Seasons SEX RATIO SOWS Studies Swine Swine Diseases - economics Swine Diseases - epidemiology Swine Diseases - physiopathology TAILLE DE LA PORTEE TAMANO DE LA CAMADA Terrestrial animal productions TRUIE UTERO UTERUS VARIACION ESTACIONAL VARIATION SAISONNIERE Vertebrates
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Zusammenfassung:	Failure of gilts and sows to conceive when they are mated is a potentially serious economic cost for swine producers. In Exp. 1, we determined that anogenital distance of newborn gilts is related to the proportion of males in the litter (P .001). Gilts from litters with more males have larger anogenital distances (mean
ISSN:	0021-8812 1525-3163 0021-8812
DOI:	10.2527/1997.7582192x