Journal: Poultry Science

Abbreviation

Poult. sci.

Publisher

Elsevier

Journal Volumes

ISSN

0032-5791

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Publications 1 - 8 of 8
  • Relationships Between Income Minus Feed Cost and Residual Feed Consumption in Laying Hens
    Item type: Journal Article
    Hagger, C. (1994)
    Poultry Science
  • Phenotypic and Genetic Effects on Feed Intake of Laying Hens in Different Years
    Item type: Journal Article
    Hagger, C. (1991)
    Poultry Science
  • Bt176 corn in poultry nutrition: physiological characteristics and fate of recombinant plant DNA in chickens
    Item type: Journal Article
    Aeschbacher, K; Messikommer, R; Meile, L; et al. (2005)
    Poultry Science
  • Black Soldier Fly larvae meal and fat can completely replace soybean cake and oil in diets for laying hens
    Item type: Journal Article
    Heuel, Maike; Sandrock, Christoph; Leiber, Florian; et al. (2021)
    Poultry Science
    Currently, there is a great interest in finding alternative protein and energy sources to replace soybean-based feeds in poultry diets. The main objective of the present study was to completely replace soybean in layer diets with defatted meal and fat from black soldier fly larvae without adverse effects. For this purpose, 5 × 10 Lohmann Brown Classic hens were fed either a soybean-based diet or diets based on defatted black soldier fly larvae meal and fat from 2 producers (1 commercial, 1 small-scale) operating with different rearing substrates, temperatures, and larvae processing methods (10 hens/diet). The data obtained included nutrient composition of larvae meals and diets, amino acid digestibility (6 hens/diet), and metabolizability, performance and egg quality (all 10 hens/diet). In addition, the acceptance of the 4 larvae-based diets was tested against the soybean-based diet in a 6-d choice feeding situation (10 hens/treatment). The nutritional value of the larvae-based diets was equivalent to the soybean-based diet in hens with a laying performance of 98%. Although average feed intake was not significantly different over the 7 experimental wk, the diets based on larvae feeds from the small-scale production appeared to be slightly less accepted in a choice situation than the soy-based diet and those with larvae from commercial origin. This was more likely the effect of the larvae fat rather than that of the larvae protein meal. In addition, the commercial larvae material was superior to that from the small-scale production concerning supply with digestible sulfur-containing amino acids (548 vs. 511 mg/d) and lysine (792 vs. 693 mg/d), egg weight (67 vs. 63.2 g), daily egg mass (66 vs. 61 g/d) and, in tendency, feed efficiency. The results indicate that soybean-based feeds can be replaced completely by black soldier fly meal and fat in diets of high-performing layers. However, because of nutritional differences between the larvae materials of different origin the quality of the larvae has to be closely monitored before being used.
  • Segregation analysis of milk flow in Swiss dairy cattle by Bayesian approach
    Item type: Other Conference Item
    Ilahi, Houcine; Kadarmideen, Haja N. (2004)
    Poultry Science
  • Effect of Pelleting Temperature on the Activity of Different Enzymes
    Item type: Journal Article
    Spring, P.; Newman, K. E.; Wenk, C.; et al. (1996)
    Poultry Science
  • Impact of dietary polyphenols from shredded, steam-exploded pine on growth performance, organ indices, meat quality, and cecal microbiota of broiler chickens
    Item type: Journal Article
    N'Cho, Chris Major; Gupta, Vaishali; Goel, Akshat; et al. (2025)
    Poultry Science
    The chicken's gastrointestinal tract is home to complex and diverse microbial communities that can be manipulated to enhance health and productivity. Although polyphenols have recently attracted the attention of researchers due to their potent antioxidant capabilities, their impact on the gut microbiota remains largely unexplored. Hence, in this study, we conducted a comprehensive analysis of the effects of dietary supplementation with polyphenol-rich extract from shredded, steam-exploded pine particles (PSPP) on growth, meat quality, and gut microbial dynamics in broiler chickens. Supplementation of PSPP was found to significantly improve birds' FCR until the third week of the trial but only marginally affected meat quality. Based on meta-taxonomic analyses of the cecal microbiotas of broilers fed increasing concentrations of PSPP, dietary PSPP modulated the composition of the cecal microbiota of the birds with a concomitant increase of Bacteroidetes and a decrease in the Firmicutes population. Similar trends were observed for the proportions of Alistipes and Faecalibacterium at the genus level. Additionally, 43 unique bacterial species were detected in the cecal microbiome of birds fed with PSPP. However, microbial diversity did not vary significantly among treatment groups. A particularly interesting finding was the specialization observed in the microbiome of birds receiving PSPP supplementation. Microbial co-occurrence network analyses revealed substantial modifications in their network structure when compared to control birds. Families like Rikenellaceae and Eubacteriaceae were notably absent, and the number of microbial interactions was drastically lower in the PSPP-fed group. Microbial taxa modeling revealed that the impact of increasing dietary PSPP levels primarily affected genus-level taxa, showing a decreasing trend. Overall, this offers compelling evidence that continuous PSPP supplementation may not only alter the composition of intestinal microbes but also have a profound effect on the interactions among different microbial species. Conversely, PSPP had minimal effects on broilers' performance and meat quality.
Publications 1 - 8 of 8