Bone development can be adversely affected by stressful environmental conditions early in life. One experiment was conducted to evaluate the effects of low temperature during early incubation, high temperature during late incubation, and transportation conditions from hatchery to the farm on the long bone development and leg health of broilers. Bone development was evaluated at hatch before transportation. Gait scores and leg health disorders were recorded at 41 d of age. Although incubation conditions did not affect chick BW, hot temperatures during late incubation reduced the relative weight of femurs and shanks. At 41 d, males had more leg problems than females. Late high temperature and transportation stress increased the incidence of crooked toes and the percentage of chickens with a gait score of 2. Transportation stress, including elevated temperature, caused a greater incidence of twisted legs. We concluded that low early incubation temperature, high late incubation temperature, and transportation stress can increase the incidence of leg problems in commercial broilers.
It is necessary to support the couple from the assisted reproduction centres, promoting cohesion, flexibility, and communication in the relationship. The intervention process should also be understood from a systemic perspective; that is, considering dyadic transactions as a systemic unit. Two aspects seem to be especially relevant for clinical nurses in ART: (a) the man's role is crucial for treatment success; (b) the woman's communication is crucial to the process.
A case-control study (n = 68) of roaster chickens condemned for cyanosis was conducted. Color (CIE L*a*b*) and pH were measured at slaughter, and after 24 h aging on ice, at four predetermined sites of the Pectoralis major. Cyanotic carcasses (dark) had a higher pH than controls at the time of slaughter and at 24 h postmortem (P < 0.01). Perimortem pH was significantly correlated with pH at 24 h postmortem (r = 0.64) and also was correlated with lightness (L*) perimortem and postmortem (24 h; r = -0.36 and -0.50, respectively). Perimortem pH was not correlated with meat redness (a*) at slaughter time and after 24 h. Ultimate pH and lightness at 24 h postmortem were also correlated. Tests based on pH, L*, and a* of the P. major were assessed: the sensitivity and specificity at various cut-off points were, respectively, pH(6.3) = 76.47 and 88.24%, L*(41) = 91.18 and 79.41%, and a*(3) = 76.47 and 97.06%. The repeatability (p) of pH and color measurements was excellent and ranged from 0.87 to 0.98. Breast meat from roasters condemned for cyanosis had dark, firm, and dry (DFD)-like traits, and accurate tests based on color and pH could be described as a means of identifying chickens condemned for cyanosis.
Background Although infertile couples are mentally healthy, dealing with infertility and assisted reproductive technology (ART) treatment is usually associated with psychological distress. It would therefore be useful to have short, multidimensional instruments to be able to identify people who present more intense emotional reactions and follow up their emotional distress throughout the ART. Objectives The goals of the study were to analyze the psychometric adequacy of the original 90-item version of the Symptom Checklist (SCL-90) in a sample of Spanish women and their partners undergoing ART, as well as to develop and analyze two brief versions of the SCL-90, given the absence of adequate short versions for this population. Methods A cross-sectional design for patients and their partners in the process of ART through in vitro fertilization was used. The two brief scales were obtained, which took into account the levels of variance explained by the items and confirmatory factor analysis. Results Two brief instruments were developed. The first, with 45 items (SCL-45-I Infertility), includes nine subdimensions: Somatization, Interpersonal Sensitivity, Obsessive-Compulsive Disorder, Depression, Anxiety, Hostility, Paranoid Ideation, Phobic Anxiety, and Psychoticism. The second instrument contains nine items (SCL-9-I or Global Severity Index [GSI]), one item for each dimension. Both instruments were psychometrically adequate (SCL-45-I: χ2/df = 7.24, RMSEA = .057, 95% CI [.056, .059], CFI = .97, NNFI = .97, SRMR = .049; SCL-9-I: χ2/df = 9.66, RMSEA = .068, 95% CI [.061, .076], CFI = .97, NNFI = .96, SRMR = .035). Measurement invariance analysis by gender was conducted, and the instruments were shown to be suitable for both men and women. Discussion The suitability of the SCL-90-R for use in ART was verified, and two valid instruments—useful and easy to use for nurses, psychologists, and other care providers—were developed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.