Effects of Genotype on Testis, Semen Quality, and Mineral Composition of Semen in Various Ram Breeds

Mert, Handan; Karakuş, Kadir; Yılmaz, Ayhan; Aygün, Turgut; Mert, Nihat; Apaydın, Betul; Seyhan, Ercan

doi:10.1007/s12011-009-8393-y

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…The relative amount of calcium and magnesium detected in the current study were in the same range as that identified in ram seminal plasma by Juyena and Stelletta [57]. However, the other analytes investigated varied in concentration when compared to the literature [58][59][60][61][62]. This could be due to breed differences amongst the rams used in the current study (Merino, Merino X, Coopworth and Finn X) or different analytical modalities.…”

Section: Discussionsupporting

confidence: 59%

The identification of proteomic markers of sperm freezing resilience in ram seminal plasma

Rickard

Leahy

Soleilhavoup

et al. 2015

Journal of Proteomics

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Section: Discussionsupporting

confidence: 59%

The identification of proteomic markers of sperm freezing resilience in ram seminal plasma

Rickard

Leahy

Soleilhavoup

et al. 2015

Journal of Proteomics

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“…Zn is quite high in the developing spermatocytes due to the need for Zn during DNA condensation and meiosis (20). Zn also facilitates the packaging of DNA in spermatids (21) and is purported to prolong spermatozoa life span once released postejaculation (22)(23)(24)(25). Despite the clear reliance on Zn for optimal spermatogenesis, testicular function, and fertility, there is little understanding of how the testes acquire Zn from circulation, how Zn is transported through the testes into the maturing gametes during spermatogenesis, or how marginal Zn deficiency affects this process.…”

Section: Introductionmentioning

confidence: 99%

Moderate Zinc Deficiency Reduces Testicular Zip6 and Zip10 Abundance and Impairs Spermatogenesis in Mice

Croxford

McCormick

Kelleher

2011

The Journal of Nutrition

103

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Male infertility accounts for ~40% of cases of failure to conceive. Testes have a strict zinc (Zn) requirement and severe Zn deficiency compromises spermatogenesis, sperm viability, and motility, compromising fertility in men. Despite the high prevalence of marginal Zn deficiency in humans, less emphasis has been placed on understanding the consequences on male reproduction. Swiss Webster mice were used to visualize Zip protein expression during spermatogenesis using immunohistochemistry. Data suggest Zip5 imports Zn into Sertoli cells and spermatocytes, augmented by Zip10 (primary spermatocytes) and Zip8 (secondary spermatocytes). Zip6, 8, and 10 expression was retained in round spermatids, although Zip8 and Zip10 expression disappears during spermatid maturation. Zip1 and Zip6 expression was detected in mature, elongated spermatids. Zip14 was detected in undifferentiated spermatogonia and Leydig cells. Mice fed diets (n = 10/group) reduced in Zn concentration [marginal-Zn diet (MZD), 10 mg Zn/kg; low-Zn diet (ZD), 7 mg Zn/kg] for 30 d had >35% lower liver Zn concentrations than mice fed the control diet (C; 30 mg Zn/kg) (P < 0.05). Plasma Zn and testosterone concentrations and the testes Zn concentration and weight were not significantly lower than in controls. Plasma Zn was greater in the ZD group than in the C and MZD groups. Mice fed ZD had a reduced number of terminal deoxynucleotidyl transferase dUTP nick end labeling-positive cells (~50%; P < 0.05), compromised seminiferous tubule structure, and reduced Zip10 and Zip6 abundance (>50%; P < 0.5) compared with mice fed C. Our data provide compelling evidence that reduced Zn intake may be associated with infertility in men, perhaps independent of decreased levels of circulating Zn or testosterone, which warrants further investigation in human populations.

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A review of morphological characteristics relating to the production and reproduction of fat-tailed sheep breeds

Pourlis

2011

Trop Anim Health Prod

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The purpose of this study is to survey the literature pertinent to some morphological traits which are related with the production and reproduction of fat-tailed sheep breeds. The fat-tailed breeds were identified according to Food and Agriculture Organization databases. Articles referring to all these sheep breeds were evaluated. The morphology of udders and their measurable variables were collected and described. The particularities of pelt and fleece features which are important from an economic point of view were summarized. Linear, planar, and spatial parameters of body, slaughter, and carcass factors were compared at various ages of breeding. Testicular dimensions and semen characteristics were recorded. Their relationships with productive and reproductive performance were discussed. The pattern of ovarian follicle development and the involution of the genital tract were assessed from the anatomical point of view in normal and untreated animals. The data presented here provide useful baseline information on the normal morphological aspects which are important in the animal production of these breeds.

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Effects of Genotype on Testis, Semen Quality, and Mineral Composition of Semen in Various Ram Breeds

Cited by 8 publications

References 12 publications

The identification of proteomic markers of sperm freezing resilience in ram seminal plasma

The identification of proteomic markers of sperm freezing resilience in ram seminal plasma

Moderate Zinc Deficiency Reduces Testicular Zip6 and Zip10 Abundance and Impairs Spermatogenesis in Mice

A review of morphological characteristics relating to the production and reproduction of fat-tailed sheep breeds

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