scholarly journals Prebiotic effects of oligosaccharides extracted from palm kernel expeller on different levels of Salmonella typhimurium infection in chicks

2019 ◽  
Vol 49 (2) ◽  
pp. 235
Author(s):  
S Rezaei ◽  
W.L. Chen ◽  
S.C.L. Candyrine ◽  
R.Q. Foo ◽  
M.F. Jahromi ◽  
...  
2012 ◽  
pp. 3105-3112 ◽  
Author(s):  
Ana Carolina Fereira ◽  
Ronaldo Lopes O ◽  
Adriana Regina B ◽  
Gleidson Giordano Pinto de C ◽  
Raimundo Nunes Vaz S ◽  
...  

ABSTRACTObjective. The potential use of palm kernel cake was evaluated as a replacement for soybean and corn meal in cattle feed, by investigating their intake, digestibility levels and the intake behaviour of cattle fed diets containing different levels of palm kernel cake concentrate. Materials and methods. The experiment was conducted at the Experimental Farm of the Federal University of Bahia, between August and October 2009. Five crossbred Holstein × Zebu adults, were used. A 5 × 5 Latin square experimental design was used. The animals were fed Tifton-85 Bermudagrass, which made up 65% of their diet, plus one of five different levels of palm kernel cake concentrate (0, 7, 14, 21 and 28%). Results. A linear decrease in dry matter (kg/day) was observed due to the lower palatability and higher fiber content of the palm kernel cake. Neutral detergent fiber intake by the animals showed a quadratic behavior. The coefficients of fractional digestibilities of the analyzed feed, did not differ due to the inclusion of palm kernel cake. The ingestive behavior of the animals was not influenced by the inclusion of palm kernel cake in the diet. Conclusions. Palm kernel cake can be used as an alternative feed supplement in ruminant production systems to reduce feed costs without changes in the studied variables.


2010 ◽  
Vol 76 (9) ◽  
pp. 2815-2822 ◽  
Author(s):  
Sevinc Koyuncu ◽  
M. Gunnar Andersson ◽  
Per Häggblom

ABSTRACT The present study compared the performance of commercial PCR-based Salmonella enterica detection methods (BAX System Q7, the iQ-Check Salmonella II kit, and the TaqMan Salmonella enterica detection kit) with culture-based methods (modified semisolid Rappaport-Vassiliadis [MSRV] and NMKL71) in spiked and naturally contaminated samples of feed mill scrapings (FMS), palm kernel meal (PKM), pelleted feed (PF), rape seed meal (RSM), soybean meal (SM), and wheat grain (WG). When results from the various feeds were compared, the number of Salmonella enterica CFU/25 g required to produce a positive were as follows: PKM > FMS = WG > RSM = SM = PF. These data are similar to those developed in earlier studies with culture-based Salmonella detection methods. PCR-based methods were performed similarly to culture-based methods, with respect to sensitivity and specificity. However, many PCR positives could not be confirmed by Salmonella isolation and for that reason the evaluated methods were found to be suitable only when rapid results were paramount. Nevertheless, PCR-based methods cannot presently replace culture-based methods when typing information is required for tracing studies or epidemiological investigations. The observed difference in detection levels is a potential problem when prevalence data are compared as well as when feed ingredients are tested for conformance with microbiological criteria. This paper also presents a statistical model that describes the detection probability when different levels (CFU) of Salmonella contamination are present in feed materials.


Author(s):  
Osama SAEED ◽  
Baker Tareq JABER ◽  
Umar Mohammed SANI ◽  
Awis Qurni SAZILI ◽  
Henny AKIT ◽  
...  

2000 ◽  
Vol 79 (1) ◽  
pp. 77-79 ◽  
Author(s):  
J.F. Perez ◽  
A.G. Gernat ◽  
J.G. Murillo

2008 ◽  
Vol 25 (No. 4) ◽  
pp. 202-207 ◽  
Author(s):  
N. Karagözlü ◽  
C. Karagözlü ◽  
B. Ergönül

In this research, the growth and survival of <i>E. coli</i> O157:H7, <i>Salmonella typhimurium</i> and <i>Staphylococcus aureus</i> were investigated during kefir fermentation. Two different levels of inoculation of the strains were conducted; the levels of 102 CFU/ml (EC-1, SA-1 and S-1) and 103 CFU/ml (EC-2, SA-2 and S-2). At 0, 2, 6, 12, and 24 hours of kefir fermentation at 23 ± 1°C, samples were taken and the counts of <i>E. coli</i> O157:H7, <i>S. typhimurium</i>, and <i>S. aureus</i> were determined. EC-1 grew from 2.29 ± 0.02 log CFU/ml to 4.13 ± 0.18 log CFU/ml whereas EC-2 grew from 3.22 ± 0.04 log CFU/ml to 6.78 ± 0.99 log CFU/ml. Both S-1 and S-2 viable populations grew during the fermentation period, where sample S-1 grew from 2.37 ± 0.20 log CFU/ml to 4.64 ± 0.67 log CFU/ml and sample S-2 grew from 3.52 ± 0.07 log CFU/ml to 5.60 ± 0.10 log CFU/ml. SA-2 strains grew from 3.06 log CFU/ml to 3.64 log CFU/ml, SA-1 strains grew from 2.28 log CFU/ml to 2.66 log CFU/ml. According to the findings, <i>E. coli</i> O157:H7, <i>S. typhimurium</i>, and <i>S. aureus</i> can survive in kefir during fermentation.


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