Occurrence, morphology, and morphometry of follicles containing multiple oocytes in FecG mutant Santa Inês ewes

Chaves, Maiana Silva; Azevedo, H. C.; Luz, Valesca Barreto; Ferreira-Silva, José Carlos; Barros, Inácio de; Paiva, Samuel Rezende; Melo, E. O.; Magalhães-Padilha, D.M.; Freitas, Vicente José de Figueirêdo; Bartolomeu, Cláudio Coutinho; Oliveira, Marcos Antônio Lemos

doi:10.1016/j.anireprosci.2021.106690

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…In the field of reproduction, a new allele of Growth and Differentiation Factor 9, called FecG(E) (Embrapa), has been found, and ewes have to have a higher frequency of morphologically normal multiple oocytes ( 59 ).…”

Section: Discussionmentioning

confidence: 99%

Technologies Used in Production Systems for Santa Inês Sheep: A Systematic Review

2022

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This study identifies the number of publications that presented technologies used in the production systems of Santa Inês sheep in the last 5 years (2017–2021) carried out in Brazil. Therefore, the objective was to identify where we are in terms of knowledge about technologies in different fields (health, reproduction, animal breeding, behavior and welfare, nutrition and feeding, forage and pasture, carcass and meat quality, and economics and management of livestock systems). After rigorous selection, 114 studies were appointed and classified by knowledge field, and the main approaches within each theme were evaluated, pointing out research gaps. Most technologies have been in northeastern states. However, government agencies should develop public policies to disseminate techniques in rural areas because the production system in this region is still subsistence. This study highlighted the need for works that present management practices and tools that impact the improvement of animal welfare. Agro-industrial by-products have been widely used as an alternative for sheep feeding. However, economic feasibility analyses are recommended with these foodstuffs to substantiate their use as an option to reduce production costs. There is a lack of research allusive to the management of production systems, especially those related to estimates of economic feasibility indicators.

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Section: Discussionmentioning

confidence: 99%

Technologies Used in Production Systems for Santa Inês Sheep: A Systematic Review

2022

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Quantification of multi-oocyte follicles in ovaries of bitches

Zoppei¹,

Neto

Cattelam

et al. 2021

Arq. Bras. Med. Vet. Zootec.

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The objective of this study was to quantify the number and frequency of monocyte (MnOF) and multi-oocyte (MtOF) follicles in ovaries of bitches subjected to ovary salpingohysterectomy (OSH). Right and left ovaries of 38 bitches were collected after OSH, prepared, and a histological analysis was carried out. The ovaries were subjected to surface and deep histological cuts; the follicles were classified, and the number of follicles and cumulus oophorus complexes (COC) per follicle were quantified for each histological cut. MnOF and MtOF were found in all ovaries, at different developmental stages; primary follicles were grouped in the ovarian cortex, and follicles at other follicular stages presented a random distribution. MtOF containing two, three, four, or more COC were found in the ovaries of bitches, with a decreasing frequency trend, according to the number of COC in the MtOF. The effect of the age, number of estrus, estrus interval, and number of progenies per delivery was not significant for the number and frequency of MtOF in the ovaries of the bitches, whereas the size, number of pregnancies, use and number of contraceptive applications had some effect on the number and frequency of MtOF in the ovaries of the bitches.

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Occurrence, morphology, and morphometry of follicles containing multiple oocytes in FecG mutant Santa Inês ewes

Cited by 2 publications

References 30 publications

Technologies Used in Production Systems for Santa Inês Sheep: A Systematic Review

Technologies Used in Production Systems for Santa Inês Sheep: A Systematic Review

Quantification of multi-oocyte follicles in ovaries of bitches

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