Monitoramento Ovariano Ao Abate De Leitoas Descartadas Por Anestro Ou Estro Atípico

Diehl, Gustavo Nogueira; Costi, Giovanni; Vargas, Álvarez; Richter, J.; Lecznieski, L.F.; Bortolozzo, Fernando Pandolfo; Bernardi, Mari Lourdes; Wentz, Ilmo

doi:10.5380/avs.v8i1.4025

Cited by 3 publications

(4 citation statements)

References 2 publications

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“…Jiménez Loaiza et al (2012) studying the relation of physiological status of ovaries with the causes of porcine females discard at different ages, reported, differently of what were obtained in the present study, that most of females discarded presented in LP (53.1%) in comparison with FP (34.2%) of oestrus cycle. On the other hand, as observed by Diehl et al (2003), Moreira et al (2006) and Karvelienë & Riðkevièienë (2009), all gilts evaluated in our study presented active ovaries, so because, the FP and LP of oestrus cycle represent normal cyclicity conditions of ovaries.…”

Section: Morphological and Morphometric Evaluationsupporting

confidence: 66%

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Morphological and morphometric evaluation of prepubertal gilt ovaries, uterine tubes and uterus at different oestrus cycle stages

Oberlender

Pontelo

Miranda³

et al. 2014

Pesq. Vet. Bras.

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ABSTRACT.-Oberlender G., Pontelo T.P., Miranda J.R., Miranda D.R., Zangeronimo M.G., Silva A.C., Menezes T.A. & Rocha L.G.P. 2014. Morphological and morphometric evaluation of prepubertal gilt ovaries, uterine tubes and uterus at different oestrus cycle stages. Pesquisa Veterinária Brasileira 34(1):83-90. Setor de Fisiologia e Farmacologia Veterinárias, Departamento de Medicina Veterinária, Universidade Federal de Lavras, Campus Universitário s/n, Caixa Postal 3037, Lavras, MG 37200-000, Brazil. E-mail: zangeronimo@dmv.ufa.br Studies are performed in developing techniques/procedures that provide greater reproductive performance in farm animals, including pigs. In this sense, the study of gilts reproductive organs at different oestrus cycle stages for assessing the presence of abnormalities and/or other parameters that may affect the future animal fertility is important. In order to evaluate the morphological, morphometric and histomorphometric features of ovaries, uterus and uterine tubes (UTs) characteristics of prepubertal gilts at different oestrus cycle stages, reproductive tracts from 48 animals immediately after slaughter were obtained. After, the structures were dissected and removed, and the ovaries were used for classification of oestrus cycle stage of each gilt in follicular phase (FP) and luteal phase (FL). Then, morphometric evaluations of ovaries, UTs, uterine horns and uterine body were performed. Besides that, medial segments of UTs and uterus were fixed in Bouin solution, processed and included in paraffin, when histological sections of 5.0 micrometers (µm) were obtained and stained with Hematoxylin and Eosin. Histomorphometric analyzes using image capture system and specific software were performed. Afterwards, data were submitted to Student's t test for assessment the statistical differences (P<0.05) between the two different oestrus cycle stages (FP × LP) and between the placement of reproductive structures (right × left antimer). Among the gilts evaluated, 35 were in the FP and 13 in LP. There was no difference (P>0.05) between morphometric parameters of ovaries, UTs and uterus of gilts in FP and LP. Likewise, in respect to the placement of reproductive structures, both in the oestrus cycle stages, as in the general average, there was no difference (P>0.05). Regarding the histomorphometric variables, gilts classified in FP presented a higher (P<0.05) height of glandular and UT epithelium compared to animals in LP. On the other hand, the diameter of endometrial glands was higher (P<0.05) in gilts at LP compared to FP. Furthermore, gilts in LP presented a higher (P<0.05) proportion of endometrium occupied by glands, whereas animals in FP had a higher (P<0.05) proportion of connective tissue and blood vessels. In conclusion, in prepubertal gilts, the histomorphometric parameters as endometrial glands diameter, the height of glandular epithelium and of UT epithelium and the proportion of 1 Received on February 7, 2013.Accepted for publication on January 9, 2014.

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Section: Morphological and Morphometric Evaluationsupporting

confidence: 66%

“…In addition, among 13 to 49 % of swine females removal is related to reproductive failure (López--Serrano et al 2000, Diehl et al 2003. Given this, one of the current challenges in pig production systems is maintain constant the level of gilts productivity.…”

Section: Introductionmentioning

confidence: 99%

Morphological and morphometric evaluation of prepubertal gilt ovaries, uterine tubes and uterus at different oestrus cycle stages

Oberlender

Pontelo

Miranda³

et al. 2014

Pesq. Vet. Bras.

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“…Considerando que a situação fisiológica dos ovários classificados como Grau 0F e Grau 0L é considerada como fazendo parte do ciclo estral normal verifica-se na TABELA 2 que 299 matrizes descartadas (90,60%) estavam em atividade cíclica normal. Com relação ao exame macroscópico pós-morte dos ovários EINARSSON et al (1982) e DALIN et al (1997 também verificaram que a maioria das fêmeas descartadas envolvidas em seus estudos apresentavam atividade ovariana, porém em percentuais mais baixos, ou seja, 38,0 e 69,0%, respectivamente. De acordo com FOXCROFT (2002), é possível que o perfil estral e ovulatório da fêmea suína seja influenciado pela ordem do parto ou pela redução nas reservas corporais de energia, caracterizada por redução na espessura de toucinho.…”

Section: Resultsunclassified

“…Muitas destas fêmeas são descartadas por problemas irreais, que podem ser oriundos de falhas humanas durante sua determinação, levando a um aumento na taxa de reposição, diminuição da produtividade e, conseqüentemente, aumento dos dias não produtivos e custos de produção (DIEHL et al 2003).…”

Section: Introductionunclassified

Aspectos Macroscópicos Dos Ovários De Matrizes Suínas, Oriundas De Granjas Da Microrregião De Rio Verde-Go E Descartadas Para Abate Por Motivos Diversos

Moreira

Pilati

Dick

et al. 2006

AVS

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-There are many known causes for culling of sows in a herd, with reproductive problems standing as one of the major ones. In this scenary, replacement rates of 39-40% are considered acceptable in the pig industry. This study aimed to determine the relationship between functional ovarian condition in reproductively mature swine females and causes for culling. Hybrid Large White x Landrace females from 10 pig farms in Rio Verde-GO, slaughtered during the period from March to July 2002, had their ovaries analyzed by macroscopic examination and weighing. Decrease in production, advanced age, and low body condition score were the most common reasons for culling. From 330 pairs of ovaries analyzed under macroscopic examination, 90.6% were from cyclic females both on the follicular (46.4%) or the luteal (44.2%) phases, 7.6% had ovarian cysts, and 1.82% were in anestrus. The mean weight of ovaries was 8.8 g, with females with cystic ovaries or in anestrus having the heaviest (31.9 g) and the lightest ovaries (3.7 g). A total of 98.8% of all animals had ovaries showing normal cyclicity, despite the decrease in production. These results showed no associations between the difference in ovary weight and stages of the estrous cycle, and between causes of culling and functional conditions of the ovaries.Key-words: sow, reproduction; ovaries; culling.RESUMO -Muitas são as causas já identificadas que determinam o descarte de matrizes suínas, onde as principais são de ordem reprodutiva, admitindo-se como aceitável uma taxa de reposição em granjas comerciais de 39-40% ao ano. O presente estudo foi realizado com o objetivo de determinar a relação entre a condição funcional encontrada nos ovários de matrizes suínas em produção com a causa de descarte destas fêmeas. Foram avaliados, através de exame macroscópico e pesagem, ovários de fêmeas mestiças Large Withe x Landrace, descartadas de 10 granjas na microrregião de Rio Verde-GO no período de março a julho de 2002. As causas de descarte das fêmeas amostradas em sua maioria foram devido a baixa produtividade, a idade avançada e o mau escore corporal. No exame macroscópico pós-morte dos 330 pares de ovários avaliados destas fêmeas, foi observado que 46,36% estavam ciclando na fase folicular, 44,24% na fase lútea, 7,58% apresentavam cistos ovarianos e 1,82% foram classificados como em estado de anestro. O peso médio dos ovários foi de 8,75g, sendo que aqueles que possuíam cistos foram os mais pesados (31,94g) e os mais leves foram aqueles em estado anéstrico com 3,74g. Com base nestes dados observamos que 98,18% dos ovários avaliados estavam ciclando normalmente, apesar das fêmeas estarem apresentando queda na sua produção. Os resultados sugerem que não há nenhuma associação entre a diferença de peso apresentada pelos ovários direito e esquerdo, e as fases do ciclo estral. Relacionando as causas de descarte com a condição funcional dos ovários observou-se que não houve nenhuma dependência entre as duas variáveis.Palavras-chave: fêmea suína; reprodução; ovários; descarte. Intr...

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Post‐mortem Examination of Sows Genital Organs Culled for Reproductive Disturbances and Immunohistochemical Studies on ERα and PR A Receptors in the Anoestral Sows Uterus

Karvelienė¹,

Žilinskas²,

Riskevicience³

2007

Reprod Domestic Animals

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The aim of present study was post-mortem examination of ovaries, uterus and plasma oestradiol-17beta (E2) and progesterone (P4) concentrations in the blood of sows with reproductive disturbances and the distribution of oestradiol receptor (ERalpha), as well as progesterone (PR-A) in the anoestrous sows uteri. Reproductive organs of 150 crossbred sows (Lithuanian White x Danish Landrace) culled for the reasons of reproductive disturbances, were collected in local abattoir over a period of 3 months (September-November). Organs were assessed to determine the stage of the oestrous cycle or anoestrus and their development. Blood samples were collected for E2 and P4 analysis from the jugular vein 1 h prior to slaughter. For this study uterine samples only from pathological anoestrous sows were subjected to immunohistochemical staining to assess the distribution of ERalpha and PR-A in surface epithelium, subepithelial connective tissue, glandular epithelium and myometrium. Macroscopic examination of the ovaries showed that 68.7% sows had active cycling ovaries, 26.6% sows were anoestrus, ovaries were small without CL, and 4.7% of sows had multiple follicular cysts. In anoestrous sows (n = 27) the number and intensity of the nuclear staining of ERalpha varied between different uterine tissue compartments. The highest number (>80%) and the strongest intensity (+++) of positively stained cells for ERalpha was seen in myometrium and glandular epithelium. In other uterine wall compartments the number and intensity of positively stained for ERalpha nuclei was lower (+/++). The PR-A was absent from all tissue compartments. The intensity of the nuclear staining for ERalpha varied not only between the different uterine compartments but also between the sows. The 11.1% of the sows presented ERalpha in surface epithelium, 74.1% of the sows in glandular epithelium and 63.0% of sows in the myometrium.

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Monitoramento Ovariano Ao Abate De Leitoas Descartadas Por Anestro Ou Estro Atípico

Cited by 3 publications

References 2 publications

Morphological and morphometric evaluation of prepubertal gilt ovaries, uterine tubes and uterus at different oestrus cycle stages

Morphological and morphometric evaluation of prepubertal gilt ovaries, uterine tubes and uterus at different oestrus cycle stages

Aspectos Macroscópicos Dos Ovários De Matrizes Suínas, Oriundas De Granjas Da Microrregião De Rio Verde-Go E Descartadas Para Abate Por Motivos Diversos

Post‐mortem Examination of Sows Genital Organs Culled for Reproductive Disturbances and Immunohistochemical Studies on ERα and PR A Receptors in the Anoestral Sows Uterus

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