Libido and serving capacity of mature hair rams under tropical environmental conditions

The objectives of the present study were to evaluate the libido and serving capacity of Pelibuey (PB), Blackbelly (BB), Dorper (DR) and Katahdin (KA) hair sheep rams in three seasons under tropical environmental conditions. Twenty-eight mature rams were individually exposed for 10 minutes to an immo...

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Autores principales:	Cárdenas-Gallegos,MA, Aké-López,JR, Magaña-Monforte,JG, Centurión-Castro,FG
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2015
Materias:	libido serving capacity hair sheep rams tropics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100008
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spelling	oai:scielo:S0301-732X20150001000082016-07-04Libido and serving capacity of mature hair rams under tropical environmental conditionsCárdenas-Gallegos,MAAké-López,JRMagaña-Monforte,JGCenturión-Castro,FG libido serving capacity hair sheep rams tropics The objectives of the present study were to evaluate the libido and serving capacity of Pelibuey (PB), Blackbelly (BB), Dorper (DR) and Katahdin (KA) hair sheep rams in three seasons under tropical environmental conditions. Twenty-eight mature rams were individually exposed for 10 minutes to an immobilized, oestrous-induced ewe twice per season. The total number of sexual behaviours, reaction time to first mating and latencies between mating were recorded. Reaction time and latencies were affected by breed effect (P < 0.05) and except for the latency time for the second ejaculation, the season was also significant (P < 0.05) while no interaction effects were observed (P > 0.05). All rams attained at least one ejaculation during testing. The overall mean (± S.E.M.) of reaction time and latencies to second and third mating were 37.62 ± 4.97s, 136.43 ± 9.75 and 180.95 ± 11.87 seconds, respectively. PB, BB and KA rams were faster than DR in reaction time and latency to second mating (P < 0.05). For latency to third mating, PB and KA rams were faster than BB and DR (P < 0.05). The libido activities that rams performed most frequently were anogenital sniffing and foreleg kicks. It was concluded that under tropical environmental conditions PB, KA and BB rams showed better serving capacity than DR, with shorter reaction time and latency to second mating. Hair rams exhibited more frequencies of anogenital sniffing and foreleg kicks.info:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.47 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100008en10.4067/S0301-732X2015000100008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	libido serving capacity hair sheep rams tropics
spellingShingle	libido serving capacity hair sheep rams tropics Cárdenas-Gallegos,MA Aké-López,JR Magaña-Monforte,JG Centurión-Castro,FG Libido and serving capacity of mature hair rams under tropical environmental conditions
description	The objectives of the present study were to evaluate the libido and serving capacity of Pelibuey (PB), Blackbelly (BB), Dorper (DR) and Katahdin (KA) hair sheep rams in three seasons under tropical environmental conditions. Twenty-eight mature rams were individually exposed for 10 minutes to an immobilized, oestrous-induced ewe twice per season. The total number of sexual behaviours, reaction time to first mating and latencies between mating were recorded. Reaction time and latencies were affected by breed effect (P < 0.05) and except for the latency time for the second ejaculation, the season was also significant (P < 0.05) while no interaction effects were observed (P > 0.05). All rams attained at least one ejaculation during testing. The overall mean (± S.E.M.) of reaction time and latencies to second and third mating were 37.62 ± 4.97s, 136.43 ± 9.75 and 180.95 ± 11.87 seconds, respectively. PB, BB and KA rams were faster than DR in reaction time and latency to second mating (P < 0.05). For latency to third mating, PB and KA rams were faster than BB and DR (P < 0.05). The libido activities that rams performed most frequently were anogenital sniffing and foreleg kicks. It was concluded that under tropical environmental conditions PB, KA and BB rams showed better serving capacity than DR, with shorter reaction time and latency to second mating. Hair rams exhibited more frequencies of anogenital sniffing and foreleg kicks.
author	Cárdenas-Gallegos,MA Aké-López,JR Magaña-Monforte,JG Centurión-Castro,FG
author_facet	Cárdenas-Gallegos,MA Aké-López,JR Magaña-Monforte,JG Centurión-Castro,FG
author_sort	Cárdenas-Gallegos,MA
title	Libido and serving capacity of mature hair rams under tropical environmental conditions
title_short	Libido and serving capacity of mature hair rams under tropical environmental conditions
title_full	Libido and serving capacity of mature hair rams under tropical environmental conditions
title_fullStr	Libido and serving capacity of mature hair rams under tropical environmental conditions
title_full_unstemmed	Libido and serving capacity of mature hair rams under tropical environmental conditions
title_sort	libido and serving capacity of mature hair rams under tropical environmental conditions
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100008
work_keys_str_mv	AT cardenasgallegosma libidoandservingcapacityofmaturehairramsundertropicalenvironmentalconditions AT akelopezjr libidoandservingcapacityofmaturehairramsundertropicalenvironmentalconditions AT maganamonfortejg libidoandservingcapacityofmaturehairramsundertropicalenvironmentalconditions AT centurioncastrofg libidoandservingcapacityofmaturehairramsundertropicalenvironmentalconditions
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Libido and serving capacity of mature hair rams under tropical environmental conditions

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