Notes

Sequential colonization associated with oceanic archipelagos generated a new species-level the radiation within the common chaffinch complex (Aves: Fringilla coelebs).
Hens fed with the APC laid eggs with a darker colored eggshell and yolk and a slightly lower breaking strength. The yolks in the eggs from hens receiving the APC addition were characterized by distinctly higher content of polyunsaturated fatty acids (PUFA). The group fed with a higher dose of APC produced eggs with a substantially lower level of saturated fatty acids (SFA). Boiling resulted in an increase in the SFA content and a decline in the level of PUFAs and carotenoids. Freeze-drying led to an increase in the total SFA content and a decrease in the level of n-3 PUFA. The APC addition to feed can replace the genetically modified soybean meal without reducing the values of production traits and egg quality and with a beneficial effect on the yolk color and fatty acid profile. This study was conducted to investigate the effects of air chilling (AC), water chilling (WC), combined chilling consisting of WC for 20 min and AC (CO20), and combined chilling consisting of WC for 30 min and AC (CO30) on the microbiological status, surface color, processing yield, and moisture content of yellow-feathered chicken carcasses. After chilling, the carcasses treated by AC exhibited the highest total viable counts (TVC) (4.7 cfu/cm2), followed by those treated by CO20 and CO30, whereas the carcasses treated by WC showed the lowest (P 0.05). The results of this work can be useful for understanding and improving the chilling process for yellow-feathered chickens. Early feeding trials using peanut meal prepared from normal-oleic peanuts helped to identify peanuts as a suitable alternative feed ingredient for poultry. selleck chemicals llc Yet no studies to date have examined the use of high-oleic peanuts (HO-PN) as a feed ingredient for meat type chickens. Therefore, this study aimed to determine the effect of feeding whole unblanched HO-PN on the fatty acid profile of the meat produced from broilers. At hatch male chicks were randomly placed in raised wire cages, in 10 replicate pens per treatment with 10 chicks per pen, and fed with one of the 3 isocaloric, isonitrogenous diets ad libitum for 42 days (1) conventional control of soybean meal + corn, (2) 10 to 12% HO-PN and corn diet, or (3) control diet spiked with ≈6.0% oleic acid oil. All body weights (BW) were collected, and broiler selection for processing was determined by individual BW within one-half a standard deviation of the experiment 42-D mean BW, with one bird selected per pen (10 replicate pens per treatment, 3 treatments, 10 birds selected per treatment, yielding a total sample size of 30 birds). Performance was determined weekly and breast samples were analyzed for fatty acid and amino acid profile. All data was analyzed using analysis of variance, with t-test mean comparisons at P less then 0.05. BW were similar between broilers fed the HO-PN and control diet, while feed conversion ratio of broilers fed the HO-PN diet was significantly higher at weeks 2, 4, and 6 in comparison to the other treatments (P ≤ 0.03). Broilers fed with HO-PN diet had reduced carcass and pectoralis major weights in comparison to the other treatments. Chicken breast from broilers fed the HO-PN diet had significantly reduced saturated and trans fatty acid content in comparison to the controls (P ≤ 0.0002). Although additional studies must be conducted, this study suggests that feeding whole unblanched HO-PN to broiler chickens may serve as a means to enrich the meat produced with unsaturated fatty acids. The consumption of meat products from old broiler breeder hen (OBH) and old laying hen (OLH) is limited by their poor organoleptic properties. In this study, the physicochemical properties of breast and thigh meat from OBH and OLH and their application to the development of pressed ham with better quality properties were examined. To manufacture pressed ham, 3 different chicken meat mixtures (mixture A, 50% breast and 50% thigh from OBH; mixture B, 50% breast and 50% thigh meat from OLH; mixture C, 25% breast and 25% thigh from OBH and OLH, respectively) were used. Breast meat from OBH showed a higher water holding capacity (WHC; P less then 0.001), a* values (P less then 0.05), and tenderness (P less then 0.001) and lower cooking loss (P less then 0.001) and b* values (P less then 0.01) than those of other samples. No significant differences in physicochemical properties of thigh meat were detected between OBH and OLH. Regardless of chicken breed, the thigh samples showed significantly higher pH values, cooking loss, and a* and significantly lower WHC, L*, and b* than those of breast samples. The quality properties of pressed ham were affected by the physicochemical characteristics of meat ingredients, including pH, WHC, and textural properties. The pressed ham samples with mixtures A and B showed the lowest (P less then 0.05) and highest (P less then 0.05) values, respectively, for cooking loss, L*, b*, hardness, gumminess, and chewiness. The highest (P less then 0.05) overall acceptability scores were obtained for samples made with mixture A. Thus, breast and thigh meat from OBH could be used for pressed ham with favorable WHC, tenderness, and overall acceptability. The effect of ME intake (MEI) on the reproductive system was evaluated. Ross 308 broiler breeder pullets (n = 140) were assigned to 2 treatments from 22 to 26 wk of age (1) Low-energy diet fed restricted (2,807 kcal/kg, low MEI) and (2) high-energy diet fed unrestricted (3,109 kcal/kg, high MEI). Daylength was increased from 8 to 14 h at 22 wk of age with a light intensity of 30 lux. Daily palpation was used to detect sexual maturity via the presence of a hard-shelled egg in the shell gland. Expression of gonadotropin releasing hormone-I (GnRH) and gonadotropin inhibitory hormone (GnIH) genes in the hypothalamus and GnRH receptor (GnRH-RI) and GnIH receptor (GnIH-R) genes in the anterior pituitary gland of each pullet was evaluated from 22 to 26 wk of age using quantitative real time-PCR. Blood samples were taken weekly and luteinizing hormone (LH), follicle stimulating-hormone (FSH), and 17-beta-estradiol (E2) determined using commercial ELISA kits. Carcass samples were used for determination of CP and fat content.
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