• Asian-Australasian Journal of Animal Sciences
• /
• v.5 no.1
• /
• pp.45-49
• /
• 1992

Bovine drumstick of neutrophil leucocytes was studied on the quantitative and morphological characteristics and was evaluated as a diagnostic measure for bovine freemartin in newborn calves. Nuclear area of neutrophil (A, ${\mu}m^2$) and drumstick area (B, ${\mu}m^2$) were significantly correlated with average diameter of drumstick (ADD, ${\mu}m$) and following regression equations were obtained : $A=45({\pm}3)$ ADD-8, r = 0.74, $s.e.{\pm}0.6$, p < 0.01, $B=1.72({\pm}0.05)$ ADD-0.98, r = 0.93, $s.e.{\pm}0.1$, p < 0.01 Eight female siblings of heterosexual multiplets were diagnosed as freemartin from the results of chromosome analysis. Heterosexual multiplets had a very low frequency of drumstick in the nucleus of neutrophils irrespective of genetic sex. Diameters of drumstick fund in freemartin and male cotwin did not differ from those of normal cows. Examinations of drumstick in 800 neutrophils for both female and male siblings are concluded to be the best way to aid the detection of freemartinism of heterosexual twins at early life.

• Korean Journal of Food Science and Technology
• /
• v.46 no.5
• /
• pp.609-615
• /
• 2014

The cytoprotective effect of Moringa oleifera Lam. (drumstick tree) on neuronal cells was investigated to confirm the physiological benefits associated with this natural food resource. First, the drumstick tree extract was chemically analyzed to determine inherent nutritional constituents. Calcium and potassium were identified as the major mineral constituents, and palmitic acid (C16:0, 16.33%) and gadoleic acid (C20:01, 66.34%) were detected as the major fatty acids. Moreover, drumstick tree extract contained 94.78 mg/100 g vitamin E and 112.61 mg/100 g niacin. PC12 cells were used to study the cytoprotective effects of drumstick tree extract. Intracellular accumulation of reactive oxygen species was significantly reduced when $H_2O_2$ treated-neuronal cells were cultured in a medium containing the methanolic extract of drumstick tree, compared to cells treated with only $H_2O_2$. Cell viability assay using MTT showed that the extract protected cells against $H_2O_2$-induced neurotoxicity and inhibited LDH leakage from the cell membrane. Caspase assay showed that the extract exerted cytoprotective effect against apoptosis. Consequently, these data suggest that drumstick tree is a useful natural resource with positive effects on human health.

• Korean Journal of Veterinary Research
• /
• v.8 no.1
• /
• pp.39-44
• /
• 1968

Blood-examinations of 30 sexually intact female and male Korean cattle with normal blood values have been cescribed, to find drumstick (sex bud). The results obtained were as follows: 1) The cattle of positive appearance of drumstick in more than 500 neutrophils per individuals was 100% in female and 30% in male, respectively. 2) The appearance rate of drumstick in neutrophils to be found the hig hest in frequency of sex bud ranged in females from 0.2% to 2.0% (average 0.7%) and in males from 0% to 0.6% (average 0.08%). 3) Drumsticks were detected in lymphocytes (33%) as well as neutrophils and eosinophils in Korean cow.

• Asian-Australasian Journal of Animal Sciences
• /
• v.26 no.3
• /
• pp.416-422
• /
• 2013

This experiment was conducted to evaluate the effects of dietary olive oil on growth performance, carcass parameters, serum characteristics, and fatty acid composition of breast and drumstick meat in broiler chickens. A total of 480 broilers were randomly allotted into three dietary treatments, including T (basal diet, 5% tallow), O1 (2% olive oil+3% tallow), and O2 (5% olive oil). During d 0 to 21, broilers fed the diet supplemented with 5% olive oil showed lower (p<0.05) body weight gain (BWG) and feed intake (FI) compared with those fed the T diet. Serum triglyceride concentration was reduced (p<0.05), while high density lipoprotein (HDL)-cholesterol concentration was increased (p<0.05) in the O2 treatment group compared with the T and O1 treatment groups. The addition of olive oil to the diets induced a reduction (p<0.05) in the total saturated fatty acid (SFA) contents in breast and drumstick meat, and increased (p<0.05) the total unsaturated fatty acid (USFA) contents and USFA/SFA ratios. In conclusion, a diet with 5% olive oil could decrease BWG and FI of broilers during the starter period (wk 0 to 3), and cause an increase in the serum HDL-cholesterol level, while decreasing the serum triglyceride concentration. Furthermore, USFA level and USFA/SFA ratios in breast and drumstick meat were increased by dietary supplementation of 2 or 5% olive oil.

• Asian-Australasian Journal of Animal Sciences
• /
• v.9 no.3
• /
• pp.261-266
• /
• 1996

Carcass analysis of most economical parts of broilers were studied after they were fed with different protein levels of 16, 18, 20 and 23% for the starter period and 16, 18 and 20% for the grower period. The energy value of the feed was constant at 3,200 kcal ME/kg. The results for the starter and grower broilers showed similar pattern of responses. There were significant increased in weight gain, feed intake, protein intake, while there were significant decrease in the feed conversion ratio (FCR), abdominal fat and carcass fat when dietary protein increased. For the economical parts of the carcass, most of the fats were found in the thigh meat, while the lowest was found in the breast meat. The protein levels did not influence the meat production of the breast, drumstick and thigh portion. Increasing the protein intake, increased the broiler performance in relation to increased protein content of the breast, drumstick and thigh meat. The different fat contents of the meat might be due to differences in the rate of lipogenesis and fat deposition of the meat.

• Korean Journal of Food Science and Technology
• /
• v.23 no.6
• /
• pp.702-710
• /
• 1991

The effects of washing and desinewing on the composition, fuctional properties, storage stability and texture of spent layer meat were investigated. Spent layer meat subjected to treatments involving water washing, bicarbonate washing and desinewing showed increases in moisture content and decreases in protein content, hydroxyproline content and heme pigment content. Increases in salt extractable protein content and water holding capacity and decreases in buffering capacity and emulsifying capacity were also observed. The 2-thiobarbituric acid values of washed and desinewed samples increased slowly during storage indicated the increase in storage stability compared to the control. Sample rolls prepared from bicarbonate washed and desinewed thigh and drumstick meats were scored by trained sensory panelists as less tough than the products made of ground thigh and drumstick meats.

• Korean Journal of Poultry Science
• /
• v.31 no.1
• /
• pp.1-7
• /
• 2004

An experiment was conducted to investigate whether Saccharomyces cerevisiae(S. cerevisiae) could improve the growth performance and meat quality of broiler chicks. Day old 160 male broiler chicks were fed one of the two experimental diets without (0.0 %) or with S. cerevisiae (3.0 %) for five wks. Each treatment consisted of eight cages with 10 chicks per cage. Feed and water were provided ad libitum. Although not significant, BW gains of S. cerevisiae fed chicks tended to increase during 4∼5 wk of age. The addition of S. cerevisiae into the control diet significantly lowered the shear force in raw drumstick meat (P＜0.05). After 10 d of incubation, significantly lower levels of oxidation products were found (P＜0.05) in drumstick meats and skin samples from broiler chicks fed diets enriched with S. cerevisiae compared to those of the control group, while in breast meats the significant difference was monitored after 6 d of incubation. It is concluded that dietary S. cerevisiae could improve the tenderness and oxidative stability of broiler meats.

• Journal of Microbiology and Biotechnology
• /
• v.18 no.4
• /
• pp.742-745
• /
• 2008

Inactivation of Escherichia coli O157:H7 and Salmonella typhimurium was evaluated on inoculated chicken by aqueous chlorine dioxide ($CIO_2$) treatment. Chicken samples were inoculated with 6-7 log CFU/g of Escherichia coli O157:H7 and Salmonella typhimurium, respectively. The chicken samples were then treated with 0, 50, and 100 ppm of $CIO_2$ solution and stored at $4{\pm}1^{\circ}C$. Aqueous $CIO_2$ treatment decreased the populations of the pathogenic bacteria on the chicken breast and drumstick. In particular, 100 ppm $CIO_2$ treatment on the chicken breast and drumstick reduced Escherichia coli O157:H7 and Salmonella typhimurium by 1.00-1.27 and 1.37-1.44 log CFU/g, respectively. Aqueous $CIO_2$ treatment on the growth of the bacteria was continuously in effect during storage, resulting in the decrease of the populations of Escherichia coli O157:H7 and Salmonella typhimurium. These results suggest that aqueous $CIO_2$ treatment should be useful in improving the microbial safety of chicken during storage.

• Asian-Australasian Journal of Animal Sciences
• /
• v.9 no.3
• /
• pp.331-335
• /
• 1996

A study was conducted to determine the carcass composition of broilers when fed with three varying levels of dietary energy (3,000, 3,200 and 3,400 kcal/kg ME) at 20% crude protein and 0.79% Total Sulphur Amino Acid. The results showed that there was a significant (p < 0.05) increase in the ME intake of the chickens when the ME of the diet increased. Other factors like the protein intake, dressing percentage, weight gain and feed intake were not significantly affected. On the carcass, the increasing dietary ME levels resulted in a significant (p < 0.05) increase in the abdominal fat percentage and carcass fat percentage and a significant (p < 0.05) decrease in the carcass protein percentage. Similarly, the dietary ME produced a significant (p < 0.05) increase in the amount of and fat percentages of breast meat, thigh meat, and drumstick meat with a significant reduction in the protein percentage. There seemed to be an inverse relationship between the percentages of protein and fat. An increase in fat percentages always resulted in similar reduction in the protein content of the meat. These results also showed major differences between the white and red meat of the chicken.

• Animal Bioscience
• /
• v.36 no.9
• /
• pp.1393-1402
• /
• 2023

Objective: In this study effects of three types of beddings on broiler leg health and bone biomechanics were evaluated. Methods: A total of 504 male chicks (Ross 308) were randomly placed on three beddings (4 replicates/group; 42 birds/pen), zeolite-added litter (ZL), plastic-grid flooring (PF), and wood shavings (WS). On day 42, chickens were weighed, slaughtered, and samples (bone, muscle, and drumstick) were collected. Bones were subjected to leg health tests, morphometric measurements, biomechanical testing, and ash analysis. Results: Broilers in PF and WS groups showed higher live weight than the ZL group (p<0.001), and the incidence of tibial dyschondroplasia (TD) and varus valgus deformity due to distal bending was significantly higher in PF (p<0.001). Multinomial logistic regression showed that bedding has a significant (p = 0.038) contribution toward the development of TD. Tibial strength (p = 0.040), drumstick width (p = 0.001), and total femur and epiphyseal ash contents (p = 0.044, 0.016) were higher in the ZL group. Chicken live weight was correlated with tibial length and weight (r = 0.762, 0.725). Conclusion: Flooring and the type of bedding material directly affect broiler bone length, strength and leg health. Plastic bedding improves the slaughter weight of chickens on the expense of leg deformities, and zeolite litter improves leg health and bone strength.