• Food Science of Animal Resources
• /
• v.35 no.6
• /
• pp.715-720
• /
• 2015

This study was conducted to determine the effects of beak trimming, stocking density (D) and sex (S) on live weight (LW), carcass yield and its component, and plasma glucose (PG) and triglyceride levels in Large White turkeys. To accomplish this aims, totally 288 d old large white turkey chicks (144 in each sex) were used. Beaks of 77 male and female poults were trimmed when 8 d old with an electrical beak trimmer. The birds were fed by commercial turkey rasion. Experiment was designed as 2 × 2 × 2 factorial arrangement with 3 replications in each group. Beak trimming and stocking density did not affect live weight, carcass composition and its components. The higher LW and carcass weight observed in trimmed groups. As expected, male birds are heavier than female, and carcass percentage (CP) would be adverse. However, in this study, CP of male was higher in trimmed, in 0.25 m²/bird. (D) × sex (S) interaction had an effect on both CP and thigh weights (p<0.05). Significantly D × S was observed in LW, CP and PG. The weight of carcass and its some components were higher in male. S × D interaction had an effect on plasma glucose level (p<0.05). Triglyceride level was affected (p<0.05) by sex. Significant relationships were found between percentage of thighs (r=0.447, p<0.01) and percentage of breast (r=0.400, p<0.01). According to this study, it can be said that trimming is useful with density of 0.25 m²/bird in turkey fattening.

• Journal of Animal Science and Technology
• /
• v.52 no.1
• /
• pp.17-22
• /
• 2010

The current study was undertaken to determine the effects of sex steroid hormones (estrogen, testosterone and 19-nortestosterone) on proliferation and differentiation of preadipocytes of female and male pigs. The preadipocytes were isolated from the backfat of new-born female and male pigs by collagenase digestion and cultured in the $CO_2$ incubator. The concentration of $10^{-7}M$ and 10-6M sex steroid hormones were treated to the cultured preadipocytes. Regarding the effects on preadipocytes proliferation, high concentration ($10^{-6}M$) of all the three hormones increased proliferation of female preadipocytes,and only estrogen and testosterone increased proliferation of male preadipocytes. Regarding the effects on preadipocyte differentiation, all the three hormones increased differentiation of pig preadipocytes, regardless of hormone concentrations and sex of preadipocytes. The degree of stimulation of cell differentiation by sex steroid hormones was greater than that of cell proliferation.

• Biomolecules & Therapeutics
• /
• v.8 no.1
• /
• pp.38-43
• /
• 2000

Several studies have shown that the stomach has sufficient alcohol dehydrogenase (ADH) activity to metabolize some amount of orally administered alcohol and the sex-related differences in the first-pass metabolism of alcohol might be associated with differences in the activity of gastric ADH(GADH). The aim of this study was to asses the sex-related differences in GADH in 48 male and 48 female Sprague-Dawley rats aged 1, 4, 10, 15, 20, and 30 weeks which each aged group had same sex ratio. The GADH activity was determined spectrophotometrically at 37$^{\circ}C$. The formation of NADH was monitored at 340nm for 10 minutes in the 1 ml of reaction mixture (0.5 M of Tris-HCl, pH 7.2 + 1.5 M of ethanol + 2.8 mM of NAD + 30 $\mu$l gastric mucosal supernatant). The GADH activity (nM of NADH/min/mg of cytosolic protein) was calculated using molecular extinction coefficient of 6.22 $\textrm{cm}^2$/$\mu$M for NADH. The GADH activities were 2.94$\pm$0.82 (n=48) in female rats and 3.34$\pm$2.17 (n=48) in male rats and had not significant difference between sex. However, the GADH activities were significantly (p<0.01) higher in female (1.91$\pm$0.59 and 3.30$\pm$0.49) than in male (0.68$\pm$0.43 and 1.92$\pm$0.81) of 1 and 4 weeks rats. However, it was significantly (p<0.05) higher in male (6.48$\pm$1.81, 3.65$\pm$1.04 and 5.13$\pm$1.30) than in female (4.23$\pm$1.23, 2.18$\pm$0.77 and 2.56$\pm$0.93) of 10, 20 and 30 weeks rats, respectively. Therefore, the results suggested that sex-related differences of the GADH activities in same aged rats were existed by age.

• Asian-Australasian Journal of Animal Sciences
• /
• v.15 no.8
• /
• pp.1215-1221
• /
• 2002

Normal haematological and biochemical indices along with thyroid hormone status were studied in healthy Kathiawari horses of different age groups (yearling, young stock, adults and old stock) belonging to either sex. Effect of both age and sex was observed on thyroid hormone levels, haematological and biochemical indices. In females, hemoglobin levels was significantly lower in yearlings than adult animals while total leukocyte counts were higher in yearlings than equids of other age groups. Sex had effect only on total erythrocyte counts, mean corpuscular hemoglobin concentration and mean corpuscular hemoglobin in horses of 1-3 years age group (young stock) and on packed cell volume in adult female and male equids. Among biochemical indices, activities of enzymes were observed to be influenced both by age and sex. Creatine kinase, gamma glutamyl transferase, glutamate pyruvate transaminase, glutamic oxaloacetate transaminase and lactate dehydrogenase activities were significantly higher in young and adult equids than animals of other age groups in Kathiawari horses while activity of alkaline phosphatase was significantly higher in yearlings than equids belonging to other age groups in both male and females. However, activity of sorbitol dehydrogenase was unaltered due to both sex and age factor. Albumin, bilirubin direct, bilirubin total, cholesterol, creatinine, protein, triglyceride and uric acid were statistically different in various age and sex groups of horses. Calcium, magnesium and chloride contents were almost same in various age groups of male horses. Significantly higher levels of $T_3$ and $T_4$ were observed in both male and female yearlings as compared to equids of other age groups in both the sexes.

• Korean Journal of Adult Nursing
• /
• v.17 no.4
• /
• pp.561-572
• /
• 2005

Purpose: The purpose of this study was to identify gender role identity and stereotypes and to explore the relationship between gender role identity and stereotype among college students. Method: The subjects consisted of 245 college students in Daegu. Each participant was administered the KGRII of Lee, Kim, Koh(2002) and Sex Stereotype scales modified by Kim, Dongil(1999). The collected data were analyzed using descriptive statistics, ANOVA, $x^2-test$, Sheffe test with SPSS 11.0 PC Program. Result: 1. For male students, masculinity type(32.4%) was most prevalent but for female students, feminity type (29.3%) was most common. 2. Female students were inclined to oppose traditional sex-role rather than male students. And the over 23 years old group tended to resist traditional sex-roles rather than other aged group. 3. The Androginy typed group had more progressive sex-role compared with undifferentiated typed group. Conclusion: These results suggest that gender role identity and sex stereotype were difference in sex and age. And the androgyny typed group had more progressive sex-role compared with other gender role identity typed group.

• Korean Journal of Biological Psychiatry
• /
• v.22 no.4
• /
• pp.205-215
• /
• 2015

Objectives Sex hormones exposure during the prenatal period has an effect on cerebral lateralization. Male brains are thought to be more lateralized than female brains. Bipolar disorder was known to show abnormalities in cerebral laterality whose characteristics could be estimated by electroencephalography (EEG) coherences. We studied sex-related differences of EEG coherences between healthy controls and patients with bipolar disorder to examine the sex effects in the genesis of bipolar disorder. Methods Participants were 25 patients with bipolar disorder (11 male, 14 female) and 46 healthy controls (23 male, 23 female). EEG was recorded in the eyes closed resting state. To examine dominant EEG coherence associated with sex differences in both groups within five frequency bands (delta, theta, alpha, beta, and gamma) across several brain regions, statistical analyses were performed using analysis of covariance. Results Though statistically meaningful results were not found, some remarkable findings were noted. Healthy control females showed more increased interhemispheric coherences than control males in gamma frequency band. There were no differences in the intrahemispheric coherences between the healthy control males and females. In patients with bipolar disorder, female dominant pattern in interhemispheric coherences was attenuated compared with healthy control. Conclusions Sex differences of EEG coherences, which could be a marker for cerebral laterality, were attenuated in patients with bipolar disorder compared with healthy controls. These results imply that abnormal sex hormone exposure during early development might play some role in the pathogenesis of bipolar disorder.

• Journal of Aquaculture
• /
• v.13 no.4
• /
• pp.325-330
• /
• 2000

For development of all male seed production at hatchery scale, a comparative study was made on the seed production traits of supermale (IT - t) and superfemale (IT - L1 ~) Nile tilapia, Oreochromis niloticus. Supermales were crossed with normal females (XX- f) and the superfemales with normal males (XY - t ) or sex reversed males (XX- L1 t); progeny survival of these crossings and sex ratio were evaluated. Hatching success of the eggs, fertilized by the supermale was significantly lower than that by the normal male. Over 95-99 % progenies sired by crossing supermales with normal females were males, while 52-55 % progenies alone were males with the cross of normal males and normal females. Hatching success and survival of alevins were significantly higher for the progenies of the crosses between superfemales and sex reversed males than those resulting from the crosses between superfemales and normal males. However, there was no significant difference in the sex ratio among the progenies of these crosses. Therefore, crossings of superfemales with sex reversed males provide the highest percentage of survival and male progenies.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.4 no.1
• /
• pp.155-172
• /
• 2002

The purposes of the study were to investigate the differences of image on male and female contemporary folk costume of college students according to their sex, major and contemporary folk costume‘s possession. The data were collected from 300 male and 313 female college students in Cheongju city through self-administerd questionnaires and were analyzed by frequencies, Cronbach’s α, F-test, t-test, one way ANOVA and Duncan Test. The results of the study were as follows: There were significant differences with the images on male and female contemporary folk costume according to student‘s sex. There were significant differences with the images on male and female contemporary folk costume according to student’s major. There were significantly different with the images on male and female contemporary folk costume between group of having a contemporary folk costume and group of non-having it.

• Research in Community and Public Health Nursing
• /
• v.9 no.2
• /
• pp.425-440
• /
• 1998

This comparative study was conducted to compare the attitudes of sexuality and knowledge of sexual violence between male and female college students. The subjects of this study were 222 male students and 200 female students. The survey was conducted using a questionnaire of 3 general characteristics, 11 items to test attitudes on sexuality, 10 items to test knowledge of sexual violence, 1 item on the cause of sexual violence and 1 item to check knowledge of sexual violence countermeasures. According to the SPSS/PC Program, Frequency, mean, percentage, t - test, Pearson correlation coefficient were used in analyzing the data. The results of the study are summarized as follows. 1. The result of the comparison between two groups was significantly different in their attitude on sexuality(t= -4.16, P<.000). Female students had higher scores than male students. 2. The result of the comparison between two groups was significantly different for their knowledge on sexual violence(t= -6.82, P<.000). Female students had higher scores than male students. 3. As a countermeasure for prevention, sex educations is needed(27%). 4. Very high correlations were observed between a subject's sex and his /her sexuality(r=.1990, P<.0001), between a subject's sex and his /her knowledge of sexual violence(r=.3157, P<.0001), between a subject's attitude on sexuality and his /her knowledge of sexual violence(r=.2538, P<.0001).

• Journal of the Korea Fashion and Costume Design Association
• /
• v.14 no.1
• /
• pp.43-59
• /
• 2012

The purpose of this study was to compare knitwear design preferences and purchase behaviors of university students by sex. The subjects were 493 university students in Daejeon and Gongju provinces. The research method was a survey and measurement instruments were 16 stimuli which were manipulated of knitwear shape and self-administrated questionnaire (knitwear design preference items, knitwear favorite image items, purchase behavior items and subject' demographic attributions). Data were analyzed by factor analysis, frequency analysis, t-test, Cronbach' ${\alpha}$ using SPSS program. The results of the study were as follows. First, as for pullover designs according to pullover shape factors, male preferred classic design with normal round neck, set-in sleeves and normal length, whereas female preferred various designs with normal round, normal V or deep V neck, set-in sleeves and normal or long length. Second, there was significant difference by sex in knitwear patterns and materials. Male preferred geometric patterns and 100% cotton, whereas female preferred natural patterns and blended cotton. Third, 4 factors were emerged on knitwear favorite images(casual image, modem classic image, active image and characteristic image). Especially, there was significant difference by sex in active image. Male preferred active image, whereas female did not. Fourth, as for knitwear purchases, male considered fitting as important purchase criteria, whereas female considered design or style. Male used department stores for purchasing, whereas female used Bosejeom for independent fashion. Male preferred high quality knitwear to female.