Brangus cows have ovarian reserve parameters more like Brahman than Angus cows

Bos indicus females have more surface antral follicles than Bos taurus females; however, histological studies demonstrated no difference in total number of primordial follicles between these two biological types of cattle. Primordial follicle density in the ovary was less in Nelore ovaries compared to Angus ovaries, but no studies have examined the primordial follicle density in Bos indicus cross-bred females. It, therefore, was hypothesized that primordial follicle density in the ovary would decrease as percentage Bos indicus increased. Ovaries were collected from cross-bred Angus (n=32, no Bos indicus influence), Brangus (n=15), or Brahman (n=9) cows and prepared for histological evaluation. There was no difference in total number of primordial follicles per ovary between breeds (P \u3e 0.10). When numbers of primordial follicles were expressed on a per gram of ovarian tissue basis, there were fewer primordial follicles per gram of ovarian tissue in Brangus and Brahman cows than in Angus cows (P \u3c 0.05). Brangus cows did not differ from Brahman cows in primordial follicle density (P \u3e 0.10). Differences in primordial follicle density could indicate differences in capacity of ovarian stroma to produce factors necessary for oogonial proliferation and primordial follicle formation among breeds. Identifying these factors could improve the aprroach for culturing pre-antral follicles of cattle. Furthermore, these results explain why ultrasonographic antral follicle counts may need to be adjusted to a greater threshold to predict size of the ovarian reserve and determine ovarian reserve related reproductive traits in Bos indicus females

Discurso(s) sobre o ensino de língua materna em um curso de formação de professores Discourse(s) about the teaching of mother language in a language teacher education course

Este artigo visa analisar, com base no embate de vozes, as imagens que professores de língua(s) em formação constroem em seu discurso, em relação à gramática e ao ensino de língua materna. Fundamentamo-nos na Análise do Discurso de linha francesa e partimos da hipótese de que o discurso dos sujeitos da pesquisa é constituído por vozes conflitantes, sustentadas por diferentes filiações discursivas, e de que os sujeitos consolidam, independentemente do ano em que estão no curso, concepções homogeneizantes e totalizadoras sobre a língua materna e seu ensino.<br>This article aims to analyze, taking the clash of voices into account, the images that pre-service language(s) teachers build in their discourse, concerning grammar and the teaching of their mother language. We are anchored in the theoretical framework of the French Discourse Analysis and we assume that the discourse of our subjects of research is made up of conflicting voices from different discursive filiations, and that the subjects consolidate, regardless of the year in which they are in their course, homogeneous conceptions about the mother language and its teaching