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Anticipación de la estación reproductiva en cabras Serranas
Correia, Teresa Montenegro; Cortez, Fátima; Azevedo, Jorge; Valentim, RamiroThe main aim al this paper was to study the advance of the breeding season in Portuguese Serrana goats using a short-term progestagen treatment (PGF2alpha + FGA) and eCG associated or not to a previous melatonin treatment. In March, 35 adult Serrana goats were randomly divided in two groups: about half the goats received a subcutaneous implant of melatonin (18 mg) as the others got no treatment. Fifty days afte...
Control de la actividad reproductiva en ovejas de raza Churra Galega Bragançana...
Correia, Teresa Montenegro; Venâncio, David; Azevedo, Jorge; Maurício, Raimundo; Valentim, RamiroThis work aimed to compare two different protocols - FGA + eCG and melatonin + FGA + eCG - commonly used to control the breeding activity in Churra Galega Bragançana ewes. The effect of time at eCG administration - 24 hours before or at sponge withdraw - was also assessed. ln March, 94 adult ewes were randomly divided in two groups: 25 received a subcutaneous implant of melatonin (18 mg) as the others 69 got no...
Efecto del tipo de cubrición y del método de control de la actividad reproducti...
Valentim, Ramiro; Cortez, Fátima; Azevedo, Jorge; Maurício, Raimundo; Correia, Teresa MontenegroThe main aim of this paper was to study the effects of different breeding - natural mounting vs. artificial insemination - and hormonal control protocols - melatonin + FGA + eCG vs. FGA + eCG - on the reproduction activity of Portuguese Serrana goats in the anestrous season. ln March, 60 adult Serrana goats were randomly divided in two groups: half the goats received a subcutaneous implant of melatonin (18 mg) ...
Anticipación de la actividad reproductiva en ovejas de raza Churra Galega Braga...
Valentim, Ramiro; Azevedo, Jorge; Maurício, Raimundo; Correia, Teresa MontenegroThis work aimed to assess if a pre-treatment with melatonin may improve the efficiency of a short-term progestagen treatment in advancing the breeding season in Churra Galega Bragançana ewes. The effects of eCG and hCG were also assessed. ln March, 65 adult ewes were randomly divided in two groups: 28 received a subcutaneous implant of melatonin (18 mg) as the others 37 got no treatment (Control). Forty-live da...
Hormonal control of the breeding activity in Churra Galega Bragançana ewes
Correia, Teresa Montenegro; Azevedo, Jorge Manuel Teixeira de; Mendonça, Álvaro; Maurício, Raimundo; Cardoso, Manuel; Velasco, Helena; Quintas, HélderThis study aimed to evaluate the efficiency of different hormonal treatments to control the breeding activity in Churra Galega Bragançana (CGB) ewes. Material and Methods This experiment took place at Bragança (latitude 41° 49' N, longitude 6° 40' W, altitude 720 meters) and involved 94 adult CGB ewes. At March 9, 25 ewes received a melatonin implant (18 mg) – Melatonin. Forty-five days later a vaginal sponge w...
Advance of the breeding season and artificial insemination with frozen semen in...
Valentim, Ramiro; Cortez, Fátima; Azevedo, Jorge Manuel Teixeira de; Pereira, Francisco; Mendonça, Àlvaro; Quintas, Hélder; Maurício, RaimundoThis study aimed to compare the efficiency of melatonin and/or a short-term FGA treatment in the advance of the breeding season in Serrana goats. Fertility after artificial insemination (AI) with frozen semen was also assessed. Material and Methods This experiment took place at Bragança (latitude 41° 49' N, longitude 6° 40' W and altitude 720 meters) and involved 65 adult Serrana goats. At early March, 32 goats...
Contributo para a melhoria da eficácia reprodutiva de ovinos da raça Churra Gal...
Correia, Teresa Montenegro; Valentim, RamiroNos ecossistemas de montanha e numa perspetiva sócio económica, a importância das raças autóctones de pequenos ruminantes no desenvolvimento regional é muito elevada, pois eles possibilitam o aproveitamento e a rentabilização das zonas marginais e a fixação das populações. Este trabalho sumariza os resultados dos estudos desenvolvidos no IPB-ESA na área da reprodução de ovinos da raça Churra Galega Bragançana (...
Melhoria da eficiência reprodutiva de ovinos das raças Churra Galega Bragançana...
Montenegro Correia, Teresa; Valentim, RamiroNos ecossistemas de montanha e numa perspetiva socioeconómica, a importância das raças autóctones de pequenos ruminantes no desenvolvimento regional é muito elevada, pois eles possibilitam o aproveitamento e a rentabilização de zonas marginais e a fixação das populações. Este trabalho sumariza os conhecimentos alcançados em vários estudos desenvolvidos por docentes do IPB-ESA, na área da reprodução de ovinos da...
Hormonal control of the breeding activity in Churra Galega Bragançana ewes
Correia, Teresa Montenegro; Azevedo, Jorge; Mendonça, Álvaro; Maurício, Raimundo; Cardoso, Manuel; Velasco, Helena; Quintas, Hélder; Fontes, PauloThis study aimed to evaluate the efficiency of different hormonal treatments to control the breeding activity in Churra Galega Bragançana (CGB) ewes. Material and Methods This experiment took place at Bragança (latitude 41° 49' N, longitude 6° 40' W, altitude 720 meters) and involved 94 adult CGB ewes. At March 9, 25 ewes received a melatonin implant (18 mg) – Melatonin. Forty-five days later a vaginal sponge w...
Advance of the breeding season and artificial insemination with frozen semen in...
Valentim, Ramiro; Cortez, Maria de Fátima Cardoso Azevedo; Azevedo, Jorge; Pereira, Francisco Sá; Mendonça, Álvaro; Quintas, Hélder; Maurício, RaimundoThis study aimed to compare the efficiency of melatonin and/or a short-term FGA treatment in the advance of the breeding season in Serrana goats. Fertility after artificial insemination (AI) with frozen semen was also assessed. Material and Methods This experiment took place at Bragança (latitude 41° 49' N, longitude 6° 40' W and altitude 720 meters) and involved 65 adult Serrana goats. At early March, 32 goats...
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