Three hundred broiler chicks (Hubbard) of both sexes were assigned to five feeding treatments: T0 received a complete diet (control), T1 was a choice feeding system with simultaneous access to an energy-rich feed (ground corn) and a protein concentrate (43.7% CP), and T2, T3, and T4 were introduced to choice feeding after 1, 3, and 5 wk, respectively, of consuming the complete diet. At 1-d-old, T1 chicks showed a marked preference for corn, with only 21.4% of their intake being the protein concentrate diet. Intake of the concentrate progressively increased to 40 to 45% after 3 d of adaptation, resulting in diets with 22.5 to 24.3% CP. When broilers fed the complete diet for 1 to 5 wk (T2, T3, T4) were changed to choice feeding, on the 1st d, their feed choice intake was similar to that of T1 chicks at the same age. Visual observation and tactile assessment of the feed particles during the initial period allowed the chicks to quickly evaluate the new feeds and to adapt their feeding behavior. Although total feed intake to 6 wk of age was not significantly affected by the feeding treatments, broilers on choice feeding selected diets with a lower percentage of CP and had lower live body weights at 6 wk than those fed the complete diet (T0).
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http://dx.doi.org/10.1093/ps/77.4.502 | DOI Listing |
Alzheimers Dement
December 2024
New York University, New York, NY, USA.
Background: Studies show that tube feeding does not improve clinical outcomes, and professional guidelines recommend against its use for individuals with advanced dementia. Yet, our preliminary work demonstrates a preference for tube feeding among Chinese-American dementia caregivers. We propose linguistic and cultural adaptation of "Making Choices: Feeding Options for Patients with Dementia (MCFODA) to create the Chinese version of this efficacious decision aid intervention.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
London Research and Development Centre, Agriculture and Agri-Food Canada, Vineland Station, ON L0R 2E0, Canada.
Agricultural soil environments contain different types of nematodes in all trophic levels that aid in balancing the soil food web. Beneficial free-living nematodes (FLNs) consist of bacterivores, fungivores, predators, and omnivores that help in the mineralization of the soil and the top-down control of harmful plant-parasitic nematodes (PPNs). Annually, USD 125 billion in worldwide crop losses are caused by PPNs, making them a plant pathogen of great concern for growers.
View Article and Find Full Text PDFBiology (Basel)
December 2024
College of Plant Protection, Yangzhou University, Yangzhou 225091, China.
(Walker), a significant migratory pest in many Asian countries, can cause severe damage to wheat crops. Understanding whether wild oat can serve as an alternate host is important for informing predictive models of infestation levels in wheat fields and can improve pest and weed management strategies. We first conducted both choice and no-choice experiments and found that readily laid eggs on both wheat and wild oat, with no significant oviposition preference.
View Article and Find Full Text PDFBMC Health Serv Res
January 2025
Primary Care Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, CB1 8RN, UK.
Background: Given the increasing recognition of the value of greater integration of physical and mental health services for children and young people, we aimed to evaluate preferences among parents for the characteristics associated with integrated health service provision for two conditions (eating disorders, functional symptom disorders).
Methods: Two discrete choice experiments (DCEs) were conducted, using electronic surveys. Participants were adult parents of children and young people.
Am J Primatol
January 2025
Ecology and Animal Behavior Laboratory, Department of Animal and Plant Biology, State University of Londrina, Londrina, Paraná, Brazil.
Tool use to crack open palm nuts has been observed extensively in some capuchin monkey species. However, for southern black-horned capuchin monkeys (Sapajus nigritus cucullatus), there is only one published record of stone tool use from the 1990s, from an urban park in Londrina, Brazil. In the present study, we returned to this urban park to systematically investigate the hammer-and-anvil sites used to crack nuts by this capuchin monkey population.
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