Influência do grau de bipartição escrotal sobre parâmetros reprodutivos de caprinos

Abstract

The influence of scrotum division on the reproductive parameters in goats was evaluated. Thirty animals were divided into three groups of 10 animals each as follows. Group I: animals with simple scrotum (n=10); Group II: animals with 50% of scrotum bipartite (n=10); and Group III: animals with more than 50% of scrotum bipartite (n=10). It was evaluated: body weight, scrotum perimeter and the testicular length, the seminal characteristic, plasmatic concentration of testosterone, and the libido of the animals with different degrees of scrotum division. Animals with divided scrotum had higher weight and testicular length when compared with animals from the first group that had a higher percentage of spermatic defects. It is possible to conclude that there was a positive influence of scrotal bipartition on the biometric parameters and the sperm quality in goats.INDEX TERMS: Small ruminant, scrotal division, seminal characteristics, testosteron.

Influence of scrotal bipartition on spermatogenesis yield and sertoli cell efficiency in sheep

“…In the rams used in the present study, only one degree of scrotal bipartition was observed that was less than 50%, ie 10% of the scrotum length (Figure 1), similar to other studies on sheep (Oliveira & Menezes 2012, Tolentino 2012), but differing from research on goats, in which animals were also identified with degrees of scrotal bipartition greater than 50% of the total scrotum length (Nunes et al 1983, Nunes 2005, Almeida et al 2008, Almeida et al 2010.…”

“…Measurements such as scrotum perimeter, testicle length and weight are associated to the capacity of the organ to produce spermatic cells (Mies Filho 1987, Almeida et al 2010), but as there was no statistical difference among the two groups, the biometric data could not be considered as the ideal parameter to analyze the influence of the scrotal bipartition on spermatogenesis in the sheep in the present study. Therefore the quantitative histological analysis was the fundamental factor for comparison between the two groups.…”

“…Studies have shown that goats with the scrotal bipartition characteristic have greater bodyweight, showing benefits for the production of these animals (Almeida et al 2010).…”

Testicular and seminal evaluation of goats fed hay Cenostigma pyramidale

“…The scrotal perimeter (SP) is an excellent parameter to evaluate the size of the testes and the semen production capacity of goats, thus serving as a way to select a breeder for the herd. This variable does not dependent on breed or climate, but it has a close relationship with age and LW (Almeida et al 2010). In the present study, the increase in LW positively influenced the SP indexes, and these were presented according to age and LW for both experimental groups.…”

Parâmetros anátomo-estruturais de orgãos reprodutivos de ovinos sem raça definida (SRD) nativos do Estado da Paraíba, com e sem bipartição escrotal: estudo do escroto e funículo espermático

“…Estudos referentes a bipartição escrotal têm sido feito na espécie caprina e comprovado que a bipartição é desejada em reprodutores desta espécie devendo ser considerada a divisão do escroto como critério de seleção de reprodutores superiores em clima tropical, pois animais com essa característica apresentam sêmen de melhor qualidade (Almeida et al 2010).…”