Broilers, 2 wk of age, that had been previously adapted to energy: protein choice feeding, were offered corn (either ground, cracked, or presented as whole grains) and a protein concentrate (43.7% CP) in mash or pellet form. When corn was fed as whole grains, protein concentrate in the selected diet was significantly higher (35.1%) than with cracked corn (29.3%) or ground corn (29.1%). Presenting the concentrate as pellets resulted in a significantly higher concentration in the diet (32.7%) than when mash concentrate was fed (29.6%). Live BW at 4 and 6 wk of age were not significantly affected by feed texture. However, offering corn as whole grains or concentrate as pellets induced a significant improvement in feed efficiency. Total time to eat larger size particles (whole grains, pelleted concentrate) was significantly less than total time to eat ground corn or mash concentrate. Furthermore, the mean duration of the feeding bouts was two times shorter for whole grains (48 s) than for ground corn (98 s) and for pelleted concentrate (56 s) than for mash concentrate (114 s). Chickens ate whole grains or pellets at a significantly slower rate (number of pecks per second feeding time) than when eating ground corn or mash concentrate. There was a rejection during the first 24 h when the form of the concentrate (mash to pellets) was changed. Full adaptation to the new size of the concentrate required about 3 d.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/ps/76.11.1467 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of Concentrate Feed Starch Source Offered Twice a Day on Feed Intake and Milk Production of Cows During the Early Postpartum Period.
Animals (Basel)
December 2024
Agriculture Victoria Research, Department of Energy, Environment and Climate Action, Ellinbank, Victoria 3821, Australia.
This experiment determined the effects of two different starch sources when offered twice a day to cows during the early postpartum period (1 to 23 d postpartum, treatment period) on dry matter intake (DMI), feeding behavior, and milk production. The subsequent effects on milk production in the carryover period (24 to 72 d) where cows received a common diet (grazed perennial ryegrass pasture plus concentrate supplements) were also measured. Thirty-two multiparous dairy cows were offered concentrate feed (8 kg DM/d) containing 5 kg DM of crushed wheat grain or ground corn grain (7 h in vitro starch digestibility of 65.
View Article and Find Full Text PDFEffects of peroxidized soybean oil on growth and energy digestibility in broilers.
Poult Sci
December 2024
Department of Animal Science, University of Illinois, Urbana, IL 61801, USA.
Peroxidized lipids have been shown to reduce broiler performance whereupon it was theorized that dietary peroxide value (PV) plus anisidine value (AnV) may be predictive of broiler performance. In experiment (EXP) 1, 64 pens (8 broilers/pen) were fed diets containing 8 levels of peroxidized soybean oil (SO). Broilers were fed diets from 7 to 35 d of age with 8 replications per dietary treatment.
View Article and Find Full Text PDFForage sources in total mixed rations on rumen fermentation, gut fill, and development of the gastrointestinal tract of dairy calves.
Sci Rep
December 2024
Department of Animal Science, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Av. Pádua Dias, n 11, Piracicaba, SP, 1341-900, Brazil.
The inclusion of forage sources in calf diets is often discussed, and the main point debated is whether the inclusion level, particle size, source, and how forage is offered may impact gut fill and reduce body weight gain, as well as impact gastrointestinal tract development. This study aimed to determine the effects of feeding forage sources with different qualities on rumen fermentation, gut fill, and development of the gastrointestinal tract of dairy calves. Forty-eight Holstein dairy calves were blocked according to sex and body weight (BW) at 28 days of life and randomly assigned to 1 of 4 dietary treatments.
View Article and Find Full Text PDFFood insecurity and weight loss during wartime: a mixed-design study from the Gaza Strip.
J Health Popul Nutr
December 2024
Neuroscience at the Faculty of Medicine, Islamic University of Gaza, P.O. Box 108, Gaza, State of Palestine.
Background: Food insecurity is an important aspect of human suffering during wartime. Besides its ferocity, the Gaza conflict of 2023-2024 has been marked by severe food and medication shortages that exacerbated the human toll and worsened the suffering of the population.
Methods: A cross-sectional, mixed methods study that in April 2024 collected quantitative and qualitative data to assess food insecurity and malnutrition among residents of the Northern part of the Gaza Strip during the first seven months of the war.
Global Gridded Crop Production Dataset at 10 km Resolution from 2010 to 2020.
Sci Data
December 2024
Key Laboratory of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100101, China.
The global gridded crop production dataset at 10 km resolution from 2010 to 2020 (GGCP10) for maize, wheat, rice, and soybean was developed to address limitations of existing datasets characterized by coarse resolution and discontinuous time spans. GGCP10 was generated using a series of adaptively trained data-driven crop production spatial estimation models integrating multiple data sources, including statistical data, gridded production data, agroclimatic indicator data, agronomic indicator data, global land surface satellite products, and ground data. These models were trained based on agroecological zones to accurately estimate crop production in different agricultural regions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!