P-038. Relationships between age at onset of puberty and adult sperm production in boars
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چکیده
منابع مشابه
Relationships of testicular iron and ferritin concentrations with testicular weight and sperm production in boars.
The inverse relationship of testicular size and circulating follicle-stimulating hormone (FSH) concentrations has been documented, and accompanying this relationship is the change in color of the parenchymal tissue of the testes. Large testes (300 to 400 g) are pink to light red and small testes (100 g) are dark maroon with color gradations for weights in between. It was hypothesized that this ...
متن کاملon translation of phatic communion and socio-cultural relationships between the characters of the novels
phatic communion is a cultural concept which differs across cultures. according to hofstede (2001), the u.s. tends to have individualistic culture; however, asian countries tend to have collectivistic cultures. these cultures view phatic communion differently. in individualistic cultures like u.s., phatic communion reflects speakers’ socio-cultural relationships in conversations. to see whether...
15 صفحه اولAge and Sex-Specific Relationships between Phthalate Exposures and Obesity in Chinese Children at Puberty
OBJECTIVE To examine the age and sex-specific associations of urine levels of six mono-phthalates with body size and fat distribution in Chinese children at puberty. MATERIALS AND METHODS Four hundred and ninety-three school-aged children (247 boys, 246 girls) were recruited. Obesity related anthropometric indices were measured and body fat proportion (BF%) was calculated. Spot urine samples ...
متن کاملRelationships between age at puberty and interval from weaning to estrus and between estrus signs at puberty and after the first weaning in pigs.
The study comprises observations in 464 Swedish Yorkshire pigs at puberty and after the first weaning. The aim was to study relationships between age at puberty and weaning to estrus interval and between estrus signs at puberty and after the first weaning. The estrus signs were checked, and blood samples for progesterone determination were drawn regularly around puberty and after the first wean...
متن کاملThe Anatomy & Physiology of Sperm Production in Boars
Introduction The reproductive efficiency of the breeding herd depends upon the fertility of the boar. Male fertility is essential since the boar's DNA is the primary mechanism through which genetic improvements can efficiently be accomplished. In production settings, the critical event, which begins the reproductive process, is the meeting of sperm and eggs inside the female reproductive tract....
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1999
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/14.suppl_3.158-a