Banca de DEFESA: JOSE LUIS COREZZOLLA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOSE LUIS COREZZOLLA
DATA : 09/08/2018
HORA: 13:30
LOCAL: IFC Campus Concórdia
TÍTULO:

Medroxyprogesterone acetate impregnated in intravaginal devices for suppression of estrus in female pigs

PALAVRAS-CHAVES:

MAP, Luteal phase, Litter size, Reproduction

PÁGINAS: 44
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

The use of exogenous hormones in reproductive protocols has been used in swine, with altrenogest (ALT) being one of the forms of control of the estrous cycle used and the only available progestogen for pigs in the market, with oral and daily application. Medroxyprogesterone acetate (MAP) is an alternative to the use of ALT, which has recently been studied as an alternative because its application through intravaginal devices (IVD) need not be daily. Studies already performed showed good results for the MAP in the synchronization of estrus in other species. The objective of this work was to evaluate the use of MAP impregnated in DIV in the suspension of estrus in swine females and their reproductive results. The work was divided into three moments. Initially, 114 females were evaluated daily between the 21st day of lactation at weaning (28 days) in relation to the incidence of estrus in the maternity unit through Reflection of Human Tolerance (RTH) and ultrasonography, and no estrus manifestation was diagnosed at this stage. A second study evaluated retrospective data on the use of ALT for 7 d (n = 226) or 14 d (n = 234) in relation to the control group (n = 259). The adjusted birth rate was lower in the ALT7 group (79.6%) than in the ALT14 and control, 85.1% and 87.5% respectively (P <0.05). The total number of piglets born did not differ between the Control (13.6 ± 0.47), ALT7 (13.4 ± 0.48) and ALT14 (14.0 ± 0.48) groups. In the third experiment, the use of MAP-impregnated in DIV (DIV-MAP) was used for 7 d after weaning (MAP7, n = 21), 14 d (MAP14, n = 28). 7 days, ALT (Regumate®) for 7 d after weaning (ALT7, n = 22), 14 d (ALT14, n = 31) and control group (CONT, n = 15). There was no difference (P> 0.05) in the adjusted calving rate between treatments CONT (92.9%), ALT7 (72.2%), MAP7 (76.5%), ALT14 (96.1%) and MAP14 (87.0%), the same in relation to the total live piglets, CONT (12.6 ± 1.0), ALT7 (11.9 ± 1.0), MAP7 (13.4 ± 1.0 ), ALT14 (13.1 ± 0.7) and MAP14 (13.6 ± 0.8). The study demonstrated that the use of hormones in the control of estral cycle presents satisfactory results, however its uses in periods of 7 days present reproductive losses. It has also demonstrated that DIV-MAP can be used in the control of estrus in swine females presenting reproductive results similar to the use of ALT.

MEMBROS DA BANCA:
Externo à Instituição - ERALDO LOURENSO ZANELLA - UPF
Presidente - 2648941 - IVAN BIANCHI
Externo à Instituição - PAULO EDUARDO BENNEMANN - UNOESC