scholarly journals Establishing the tolerability to broiler chickens and laying hens of nonanoic acid at practical levels of use as a feed flavouring

2021 ◽  
pp. 1-8
Author(s):  
M. H. L. Bento ◽  
E. A. Lewis ◽  
I. Ramírez de Arellano ◽  
C. Millán ◽  
E. King ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Laying Hens ◽  
Nonanoic Acid ◽  
Levels Of Use

scholarly journals Establishing the Tolerability to Turkeys of Nonanoic Acid at Practical Levels of Use as a Feed Flavoring

2021 ◽  
Vol 11 (03) ◽  
pp. 422-439
Author(s):  
Maria H. L. Bento ◽  
Elizabeth A. Lewis ◽  
Miquel Nofrarias ◽  
Borja Vilà ◽  
Philip McGuire ◽  
...  
Keyword(s):  
Nonanoic Acid ◽  
Levels Of Use

scholarly journals Influence of Origin of Laying Hens on the Quality of Their Carcasses and Meat After the First Laying Period

2014 ◽  
Vol 14 (3) ◽  
pp. 685-696 ◽  
Author(s):  
Michał Puchała ◽  
Józefa Krawczyk ◽  
Jolanta Calik
Keyword(s):  
Genetic Resources ◽  
Rhode Island ◽  
New Hampshire ◽  
Broiler Chickens ◽  
Laying Hens ◽  
The Other ◽  
Raw Material ◽  
Breeding Lines ◽  
Dressing Percentage

AbstractThe aim of the study was to assess the quality of carcasses and meat from selected native breeds and breeding lines of hens after using them for laying eggs in terms of their usefulness as raw material in traditional old polish cuisine. hens included in the programme for the protection of genetic resources were the object of this study. they belonged to the following breeds/breeding lines: greenleg partridge (Z-11), rhode Island red (r-11), new hampshire (n-11) and Barred rock (WJ-44) – 30 hens from each line. the hens were kept in a closed hen house under standard raising conditions. eight hens were selected from 56-week-old hens of each line which were subjected to analysis after being slaughtered. as a result of the research conducted, it was found that:– Among the hens under study, heavier layers, i.e. Barred rock (WJ-44), new hampshire (n-11) and rhode Island red (r-11), which are characterized by good muscling and dressing percentage similar to that of broiler chickens, proved to be most suitable for use as meat.– The meat from WJ-44 hens contained most cholesterol and least protein, and the meat from Z-11 birds had the least fat compared to the other lines.– At the end of the laying period, meat and broth from WJ-44, n-11 and r-11 hens obtained better sensory scores than those from the carcasses of Z-11 hens, which makes them an attractive raw material for traditional polish cuisine.

scholarly journals Carriage Methicillin-Resistant Staphylococcus aureus in Poultry and Cattle in Northern Algeria

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Saliha Bounar-Kechih ◽  
Mossadak Taha Hamdi ◽  
Hebib Aggad ◽  
Nacima Meguenni ◽  
Zafer Cantekin
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Broiler Chickens ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Laying Hens ◽  
Methicillin Resistance ◽  
Public Health Problem ◽  
Cross Resistance ◽  
Isolation And Identification ◽  
Methicillin Resistant

Multiresistant and especially Methicillin-Resistant Staphylococcus aureus (MRSA) poses a serious public health problem that requires their immediate identification and antibiotic resistance characteristics. In order to determine antibiotic resistance S. aureus poultry and bovine origin, 8840 samples were collected from slaughterhouses in the northern region of Algeria between years 2009 and 2014. 8375 samples were from an avian origin (1875 from laying hens and 6500 from broiler chickens) and the rest was from bovine origin. Bacteriological isolation and identification were made by classical culture method and antibiotic resistance patterns were determined by disc diffusion test. The prevalence of S. aureus was 42% in laying hens, 12% in broilers, and 55% in bovine samples. The prevalence of MRSA was 57%, 50%, and 31% in laying hens, broiler chickens, and bovine, respectively. While MRSA strains isolated from poultry showed cross-resistance to aminoglycosides, fluoroquinolones, macrolides, sulphonamides, and cyclins, those isolated from bovine also revealed similar multiresistance except for sulphonamide. This high percentage of methicillin resistance and multidrug resistance in S. aureus poultry and bovine origin may have importance for human health and curing of human infections.

scholarly journals Comparison of the welfare of laying hens, broiler chickens and turkeys in terms of bird health as surveyed during inspection in slaughterhouses

2019 ◽  
Vol 88 (2) ◽  
pp. 243-248
Author(s):  
Lenka Večerková ◽  
Eva Voslářová ◽  
Vladimír Večerek
Keyword(s):  
Czech Republic ◽  
Broiler Chickens ◽  
Laying Hens ◽  
Health Condition ◽  
The State ◽  
Post Mortem ◽  
The Czech Republic ◽  
Acute Changes ◽  
In Transit ◽  
Total Ratio

During the period 2010–2017 we monitored 17 346 183 laying hens, 887 994 167 broiler chickens and 919 843 turkeys slaughtered at slaughterhouses in the Czech Republic. In cooperation with the State Veterinary Administration, we recorded findings detected in slaughtered birds within the post mortem veterinary inspection. We analysed the total number of patho-anatomical findings (of intravital origin) and the number of findings divided into acute, chronic and traumatic diseases. In hens, the total ratio of the number of patho-anatomical intravital findings to the number of slaughtered birds (index) was found to be 0.378. This index of the incidence of patho-anatomical findings in hens was higher (P < 0.001) than that found in broilers (0.016) and turkeys (0.101). The prevailing findings in hens were chronic changes (26.32%), followed by acute changes (5.29%), but also notable were traumatic changes (3.90%). Compared to the findings in broilers which were divided into chronic (0.34%), acute (0.10%) and traumatic diseases (0.02%) and turkey findings which were broken down into chronic (7.60%), acute (0.16%) and traumatic diseases (0.33%), the findings of acute, chronic and traumatic diseases were higher (P < 0.001) in hens than in broilers and turkeys. These findings show that the health condition and hence the welfare of laying hens as reflected in the patho-anatomical findings during the veterinary inspection of slaughtered birds is significantly worse than the health condition of broilers and turkeys. This demonstrates the need for increased care for laying hens both on farms and in transit to the slaughterhouse.

scholarly journals Use of carotenoids in feed mixtures for poultry: a review

2018 ◽  
Vol 51 (3) ◽  
pp. 107-111 ◽  
Author(s):  
Milan Marounek ◽  
Akhir Pebriansyah
Keyword(s):  
Side Effects ◽  
Oxidative Stability ◽  
Broiler Chickens ◽  
Laying Hens ◽  
Productive Performance ◽  
Poultry Products ◽  
Poultry Diets

Abstract Carotenoids are present in ingredients of feed for poultry. Their content can be further increased by supplementation of feed mixtures with synthetic or natural carotenoids. The present paper recapitulates knowledge on the use of carotenoids in broiler chickens and laying hens, and deals with synthetic or natural carotenoids derived from plants. The review describes effects of carotenoids on productive performance, oxidative stability of poultry products, colouring of yolks and accumulation of carotenoids in yolks. There are several alternatives to synthetic carotenoids which are usable in poultry diets and satisfy the interest of consumers in poultry products free of undesirable side effects.

Aflatoxin and its metabolites in tissues from laying hens and broiler chickens fed a contaminated diet

1994 ◽  
Vol 65 (4) ◽  
pp. 407-414 ◽  
Author(s):  
Antonio Fernández ◽  
M Teresa Verde ◽  
Manuel Gascón ◽  
Juan José Ramos ◽  
José Gómez
Keyword(s):  
Broiler Chickens ◽  
Laying Hens

PSVIII-20 Heterologous lactobacilli feed additive impact on microflora in Cobb-500 broiler laying hens

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 429-429
Author(s):  
Anastasiia A Kurilova ◽  
Larisa Y Karpenko ◽  
Anna B Balykina ◽  
Alesya A Bakhta ◽  
Ivan I Kochish ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Laying Hens ◽  
Probiotic Bacteria ◽  
Feed Additive ◽  
State University ◽  
Feed Supplement ◽  
Russian Science ◽  
Hatching Eggs ◽  
Experimental Group ◽  
Subsequent Administration

Abstract Experiment was carried out on introducing eggshells from an experimental group of laying hens of lactobacilli strains with anti-C.jejuni activity. Eggs were incubated for 21 days to obtain broiler chickens containing auto-strains of lactobacilli with anti-C.jejuni activity in the blind processes of the intestine. It should be noted that most of the incubation eggs were observed in the 2nd group, in which the eggs were laid for subsequent administration of probiotic bacteria. Check was carried out for the presence of auto-strains of lactobacilli with anti-C.jejuni activity in the intestines of broiler chickens and the timing of their persistence for 1–35 days. The objective of the study was a comparative analysis of the following DNA samples: DNA from a feed supplement containing strains of lactobacilli with anti-C.jejuni activity; DNA samples from litter of laying hens of the parent herd receiving heterologous lactobacilli as part of the feed; isolated DNA from washes from hatching eggs; DNA samples from the contents of the digestive tract of chicken embryos; DNA samples from the intestines of broiler chickens. DNA samples from groups of birds and their embryos obtained without the use of heterologous lactobacilli were used as controls. The microflora of the contents of blind processes was taken from chickens on the 22nd day and on the 35th day of growing. In total, 343 different bacterial OTUs were identified in this study, belonging to 13 types, 26 classes, 51 orders, 106 families and 172 genera. Assessment of the biodiversity of bacterial ensembles in the samples of the contents of blind processes of chickens revealed fundamental differences already at the level of growing time and type. The study was performed at the FGBOU VO “St. Petersburg State University of Veterinary Medicine» with the aid of the Russian Science Foundation Grant (Project No. 18-76-10017).

scholarly journals QUALIDADE DA ÁGUA DE BEBEDOUROS TIPO NIPPLE DE FRANGOS DE CORTE E DE POEDEIRAS COMERCIAIS / WATER QUALITY FROM NIPPLE DRINKERS OF BROILER CHICKENS AND LAYING HENS

2013 ◽  
Vol 29 (4) ◽  
pp. 126
Author(s):  
F. R. BARREIRO ◽  
L. A. AMARAL ◽  
L. F. RIBEIRO ◽  
L. F. LAVEZZO ◽  
C. E. G. AGUILAR ◽  
...  
Keyword(s):  
Water Quality ◽  
Broiler Chickens ◽  
Laying Hens
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