A prática do clarinete : uma abordagem baseada nos princípios da Técnica Alexander
Oliveira, Tiago Filipe Brandão
2019
Type
masterThesis
Creator
Identifier
202269663
Title
Efeito da reutilização de CIDR e PRID na reprodução de novilhas Holstein-Frísia.
Contributor
Rodrigues, João Pedro Várzea
Lopes, António Álvaro Dias
Lopes, António Álvaro Dias
Subject
Novilhas
CIDR
PRID
Reutilização
Taxa de gestação
Heifers
Reuse
Pregnancy rate
Domínio/Área Científica::Ciências Agrárias
CIDR
PRID
Reutilização
Taxa de gestação
Heifers
Reuse
Pregnancy rate
Domínio/Área Científica::Ciências Agrárias
Date
2019-08-01T09:54:01Z
2019-08-01T09:54:01Z
2019
2019-08-01T09:54:01Z
2019
Description
Com este trabalho pretendeu-se comparar a taxa de gestação de grupos de novilhas da raça Holstein-Frísia tratadas com dois dispositivos intravaginais comercializados em Portugal, o CIDR® e o PRID Delta® e testar a sua reutilização com o objetivo de perceber a sua viabilidade, na taxa de gestação, após uma segunda aplicação.
Para este trabalho foram praticados dois protocolos de indução e sincronização de cios. Num protocolo foi aplicado o dispositivo intravaginal CIDR®, com 1,38g de progesterona, nas variantes: “novo” e “reutilizado” (n=83). No outro protocolo foi aplicado o dispositivo intravaginal PRID-Delta®, contendo 1,55g de progesterona, nas variantes: “novo” e “reutilizado” (n=70).
O trabalho de campo consistiu na prática de quatro tratamentos, de acordo com o dispositivo intravaginal usado.
Os quatro tratamentos utilizados foram: CIDR Novo (CIDR N) (n=42), CIDR reutilizado, esterilizado em autoclave (CIDR Rac) (n=38), PRID Novo (PRID N) (n=38), PRID reutilizado, desinfetado com solução de iodopovidona (PRID Rd) (n=31).
O trabalho desenvolvido em novilhas teve inicio no dia 0, com a aplicação dos dispositivos intravaginais de progesterona e administração do análogo de GnRH (2,5ml de Veterelin). No dia 5, foram retirados os dispositivos intravaginais e foi administrado um análogo de PGFα (2ml de Luteosyl) e 24h depois foi feita uma nova administração de Luteosyl. O protocolo finalizou no dia 8. Foi realizada a inseminação artificial e administrado Veterelin. O diagnóstico de gestação foi feito por ecografia transretal, 30-50 dias após a inseminação artificial.
Os resultados obtidos, traduzidos pelas taxas de gestação dos quatro tratamentos não diferiram estatisticamente entre si (p>0,05): CIDR N com 57,1%, CIDR Rac com 60,5%, PRID N com 65,8%, PRID Rd com 51,6%.
A taxa de gestação de animais tratados com CIDR (CIDR N e CIDR Rac) foi de 58,8% e a taxa de gestação de animais tratados com PRID (PRID N e PRID Rd) foi de 59,4%.
Para uma simulação de 100 novilhas tratadas com CIDR novo, os custos do protocolo foi de 31,14€/novilha gestante. Após a reutilização, os custos foram de 22,03€/novilha gestante. Para uma simulação de 100 novilhas tratadas com PRID novo, os custos do protocolo foi de 23,39€/novilha gestante. Após a reutilização, os custos foram de 19,97€/novilha gestante.
O tratamento com PRID demonstrou ser economicamente mais vantajoso, tanto aplicado na primeira vez como com a sua reutilização. No entanto a variação de custos com as reutilizações demostra ser maior no dispositivo intravaginal CIDR.
Abstract: The purpose of this study is to compare the gestation rate of groups of Holstein-Frísia heifers treated with two intravaginal devices marketed in Portugal, CIDR® and PRID Delta® and to test their reuse in order to perceive their viability, in the gestation rate, after a second application. For this work two protocols of induction and synchronization of estrus were practiced. In one protocol, the CIDR® intravaginal device with 1,38 g of progesterone was applied in the "new" and "reused" variants (n = 83). In the other protocol, the PRID-Delta® intravaginal device containing 1,55 g of progesterone was applied in the "new" and "reused" variants (n = 70). Fieldwork consisted in the practice of four treatments, according to the intravaginal device used. The four treatments used were: New CIDR (CIDR N) (n = 42), reused CIDR, autoclaved (CIDR Rac) (n = 38), PRID New (PRID N) (n = 38), PRID reused, disinfected with iodopovidone solution (PRID Rd) (n = 31). Work on heifers started on day 0 with the application of intravaginal progesterone devices and administration of GnRH analog (2,5 ml of Veterelin). On day 5, intravaginal devices were withdrawn and a PGFα analogue (2 ml Luteosyl) was administered and 24 hours later a new administration of Luteosyl was made. The protocol was completed on the 8th day. Veterinary insemination and veterinary administration were performed. The diagnosis of pregnancy was done by transrectal ultrasound, 30-50 days after artificial insemination. The results obtained, translated by the gestation rates of the four treatments did not differ statistically (p>0,05): CIDR N with 57,1%, Rac CIDR with 60,5%, PRID N with 65,8%, PRID Rd with 51,6%. The gestation rate of animals treated with CIDR (CIDR N and CIDR Rac) was 58,8% and the gestation rate of animals treated with PRID (PRID N and PRID Rd) was 59,4%. For a simulation of 100 heifers treated with new CIDR, the protocol costs were 31,14€/pregnant heifer. After re-use, the costs were 22,03€/pregnant heifer. For a simulation of 100 heifers treated with new PRID, the protocol costs were 23,39€/pregnant heifer. After re-use, the costs were 19,97€/pregnant heifer. The treatment with PRID proved to be economically more advantageous, both applied the first time and with its reuse. However, the variation of costs with the reuses proves to be greater with the CIDR intravaginal device.
Abstract: The purpose of this study is to compare the gestation rate of groups of Holstein-Frísia heifers treated with two intravaginal devices marketed in Portugal, CIDR® and PRID Delta® and to test their reuse in order to perceive their viability, in the gestation rate, after a second application. For this work two protocols of induction and synchronization of estrus were practiced. In one protocol, the CIDR® intravaginal device with 1,38 g of progesterone was applied in the "new" and "reused" variants (n = 83). In the other protocol, the PRID-Delta® intravaginal device containing 1,55 g of progesterone was applied in the "new" and "reused" variants (n = 70). Fieldwork consisted in the practice of four treatments, according to the intravaginal device used. The four treatments used were: New CIDR (CIDR N) (n = 42), reused CIDR, autoclaved (CIDR Rac) (n = 38), PRID New (PRID N) (n = 38), PRID reused, disinfected with iodopovidone solution (PRID Rd) (n = 31). Work on heifers started on day 0 with the application of intravaginal progesterone devices and administration of GnRH analog (2,5 ml of Veterelin). On day 5, intravaginal devices were withdrawn and a PGFα analogue (2 ml Luteosyl) was administered and 24 hours later a new administration of Luteosyl was made. The protocol was completed on the 8th day. Veterinary insemination and veterinary administration were performed. The diagnosis of pregnancy was done by transrectal ultrasound, 30-50 days after artificial insemination. The results obtained, translated by the gestation rates of the four treatments did not differ statistically (p>0,05): CIDR N with 57,1%, Rac CIDR with 60,5%, PRID N with 65,8%, PRID Rd with 51,6%. The gestation rate of animals treated with CIDR (CIDR N and CIDR Rac) was 58,8% and the gestation rate of animals treated with PRID (PRID N and PRID Rd) was 59,4%. For a simulation of 100 heifers treated with new CIDR, the protocol costs were 31,14€/pregnant heifer. After re-use, the costs were 22,03€/pregnant heifer. For a simulation of 100 heifers treated with new PRID, the protocol costs were 23,39€/pregnant heifer. After re-use, the costs were 19,97€/pregnant heifer. The treatment with PRID proved to be economically more advantageous, both applied the first time and with its reuse. However, the variation of costs with the reuses proves to be greater with the CIDR intravaginal device.
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http://creativecommons.org/licenses/by/4.0/
http://creativecommons.org/licenses/by/4.0/
Language
por
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