The influence of grinding and pelleting of feed on the microbial composition and activity in the digestive tract of broiler chickens

2002 ◽  
Vol 43 (4) ◽  
pp. 569-579 ◽  
Author(s):  
R.M. Engberg ◽  
M.S. Hedemann ◽  
B.B. Jensen
Keyword(s):  
Digestive Tract ◽  
Broiler Chickens ◽  
Microbial Composition

scholarly journals Feeding microparticle protein diet combined with Lactobacillus sp. on existence of intestinal bacteria and growth of broiler chickens

2018 ◽  
Vol 43 (3) ◽  
pp. 265 ◽  
Author(s):  
M. A. Cholis ◽  
N. Suthama ◽  
B. Sukamto
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Digestive Tract ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Dietary Treatment ◽  
Protein Diet ◽  
Carcass Weight ◽  
Intact Protein ◽  
Daily Body Weight

The objective of the study was to evaluate feeding effect of microparticle protein derived from soybean meal and fish meal combined with Lactobacillus sp. at 1.2 mL on physiological condition of digestive tract and productivity of broiler. Total of 192 broiler, with initial body weight was 481.0 ± 67.2 g, given dietary treatment starting on day 21 until day 42. The experiment was assigned in a completely randomized design with 8 treatments and 4 replications. Dietary treatment were 21% intact protein (T0), 18% intact protein (T1), 21% microparticle protein (T2), 18% microparticle protein (T3), T0+Lactobacillus sp.1.2 mL (T4), T1+Lactobacillus sp.1.2 mL (T5), T2+Lactobacillus sp.1.2 mL (T6), T3+Lactobacillus sp.1.2 mL (T7). Parameters measured were total ileal lactic acid bacteria (LAB), Coliform and pH, rate of passage, daily body weight gain (DWG) and also carcass weight. Data were subjected to analysis of variance and followed by Duncan multiple range test (P<0.05). Experimental results showed that microparticle protein diet added with Lactobacillus sp. (P<0.05) increased total LAB and DWG, but decreased Coliform population, and slowed down the rate of passage. However, carcass weight was not significantly affected by treatments. Feeding microparticle protein (18%) with addition of Lactobacillus sp. (1.2 mL) can improve to be better condition of digestive tract based on higher LAB and lower Coliform populations, and increase daily body weight gain with the same carcass weight. 

Caecal microbiome and metabolites associated with different growth performances of broilers

2019 ◽  
Author(s):  
Xue Chen ◽  
Wei Zhao ◽  
Yang-zhi Liu ◽  
Natnael Demelash ◽  
Zhe Sun ◽  
...  
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Metabolic Pathways ◽  
Broiler Chickens ◽  
Average Daily Gain ◽  
Poor Performance ◽  
Hexadecanoic Acid ◽  
Microbial Composition ◽  
Growth Performances ◽  
Daily Gain

We investigated changes in the caecal microbial composition and metabolic compounds of broiler chickens weighing approximately 0.8–1.5 kg. Arbor Acres (AA) broilers (n =186) were divided into four groups (A–D) according to body weight on day 35. The results showed that there were significant differences in the average daily feed intake (ADFI), average daily gain (ADG), and feed-to-gain ratio (F:G) of chickens (P less than 0.05). The abundance of 11 genera were found to be significantly different in the four groups (P less than 0.05). The broilers with poor performance had increased levels of D-mannose, hexadecanoic acid, cholesterol, L-valine, L-leucine, glutamic acid, glucopyranose, á-D-allopyranose, and phosphoric acid (P less than 0.05) in the cecum. Microbial compositions were different in the ceca of broilers with different growth performances, and higher growth performance correlated with changes in metabolic pathways related to energy, amino acids, and others.

scholarly journals Microbial contamination of poultry litter during fattening period

2019 ◽  
Vol 35 (3) ◽  
pp. 253-265
Author(s):  
Dubravka Milanov ◽  
Slobodan Knezevic ◽  
Suzana Vidakovic ◽  
Marko Pajic ◽  
Milica Zivkov-Balos ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Microbial Contamination ◽  
Microbial Count ◽  
Microbiological Contamination ◽  
Microbial Composition ◽  
Yeast Cultures ◽  
Probiotic Yeast ◽  
Fattening Period ◽  
Favourable Environment ◽  
Broiler Feed

The results of the research into the microbiological contamination of litter used by broiler chickens are presented. Litter samples were taken prior to the introduction of chicks (day 0) and in 7-day intervals until the end of the fattening period. The total numbers of aerobic mesophilic microorganisms, yeasts, moulds and Clostridium perfringens spores, and the presence of bacteria of the Salmonella genus were determined. The total microbial count in newly laid litter was 7 log10 CFU/g, which increased to 9 log10 CFU/g by the 4th week. However, at the end of the 5th week, it was at the same level as in newly laid litter. C. perfringens spores, presumably originating from chicks? faeces, were first detected on day 7. In the next 7 days their number increased, reaching 3-4 log10 CFU/g, and remained at approximately same levels until the end of the research. The initial mould contamination was 5-6 log10 CFU/g. However, from day 21 moulds were not isolated, but only yeasts of the Saccharomyces genus. It is supposed that these were deposited with chicks? faeces, due to their presence in complete broiler feed. No bacteria of the Salmonella genus were ever isolated from the litter. In conclusion, the total numbers of microorganisms in deep litter reach their peak in approximately a month, which is followed by their decrease. Deep litter is a favourable environment for probiotic yeast cultures. Added to feed intended for broilers, they can positively influence the microbial composition of litter, providing healthier environment to fattening broilers.

scholarly journals The problem of coccidiosis in broiler chickens and laying hens: Selected control methods and alternative solutions

2021 ◽  
Vol 77 (09) ◽  
pp. 6571-2021
Author(s):  
KAROLINA FABIA ◽  
DARIUSZ WOLSKI ◽  
MAREK BIEŃKO ◽  
RADOSŁAW P. RADZKI ◽  
SYLWIA SZYMAŃCZYK
Keyword(s):  
Weight Gain ◽  
Digestive Tract ◽  
Broiler Chickens ◽  
Economic Problem ◽  
Poultry Production ◽  
Control Methods ◽  
Negative Effects ◽  
Prevention And Treatment ◽  
Alternative Solutions ◽  
Disease Unit

In industrial poultry production, especially in broiler chickens, coccidiosis, caused by Eimeria protozoa parasites in the digestive tract, continues to be a serious health and economic problem. In economic terms, the losses are mainly caused by the costs of prevention and treatment, as well as the reduced weight gain and reduced condition of the birds. Currently, the prophylactic program of this disease unit is mainly based on the use of chemotherapeutics. Another way to control coccidiosis is active immunoprophylaxis, based on the vaccination of chickens for fattening, and passive immunoprophylaxis, based on vaccination of the parent flock. An alternative, effective way to reduce the negative effects of protozoan infestation by Eimeria may be the use of herbs and their extracts, pre- and probiotics and betaine.

scholarly journals 7. Effect of Soya Wastes Probiotic and Palm Kernel Addition Fermented by Aspergillus niger to the Cellulase Activity in Broilers Digestive Tract

2019 ◽  
Vol 13 (1) ◽  
pp. 47-54
Author(s):  
Nurliana Nurliana ◽  
Anna Farida ◽  
Sugito Sugito ◽  
Al Azhar ◽  
Razali Razali ◽  
...  
Keyword(s):  
Small Intestine ◽  
Digestive Tract ◽  
Large Intestine ◽  
Broiler Chickens ◽  
Palm Kernel ◽  
Cellulase Activity ◽  
Feed Supplement ◽  
Concentration Data ◽  
Two Factors ◽  
Small And Large Intestine

This study aimed to determine the cellulase activity in broilers digestive tract after the treatment of soya wastes and palm kernel fermented by A.niger (AKBIS Prob) in the ration. This study used a complete randomized factorial design, which consists of two factors, namely the AKBIS Prob composition factor and the duration of AKBIS Prob. Twenty four broilers were divided into four groups by randomized and three replications of each. The feed supplement combinations were P0 (commercial), P1 (commercial and AKBIS Prob 2%), P2 (commercial and AKBIS Prob 4%), and P3 (commercial and AKBIS Prob 6%). The intestine preparation was taken at the 22 and 36 days to extraction and detection the cellulase activity concentration. Data were analyzed using variance analysis of factorial patterns. AKBIS Prob 2,4 and 6% was no effect (P 0.05) to the cellulase activity in the small and large intestine, while the treatment duration was significant (P0,05) in the small intestine but neither in the large intestine (P0,05) to the cellulase activity. The addition of AKBIS Prob 2.4 and 6% had no effect (P 0.05) on the concentration of cellulase activity in the small intestine and large intestine, while the duration the treatment was very significant (P 0.05) in the small intestine and neither in the large intestine (P 0.05) on the concentration of cellulase activity. The AKBIS administration in the ration for 22 days can increase the activity and concentration of cellulase activity in the small intestine of the digestive tract of broiler chickens.

scholarly journals 10. The Effect of Chemically-Synthesized Silver Nanoparticles on Performance and the Histology and Microbiological Profile of the Jejunum in Chickens

2016 ◽  
Vol 16 (2) ◽  
pp. 439-450 ◽  
Author(s):  
Katarzyna Ognik ◽  
Iwona Sembratowicz ◽  
Ewelina Cholewińska ◽  
Łukasz Wlazło ◽  
Bożena Nowakowicz-Dębek ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Growth Performance ◽  
Digestive Tract ◽  
Silver Nanoparticle ◽  
Broiler Chickens ◽  
Aerobic Bacteria ◽  
Selective Effect ◽  
Group Iii ◽  
Microbiological Profile ◽  
Microbiological Status

Abstract The aim of the study was to analyse how per os application of hydrocolloids of silver nanoparticles (22 nm) and lipid-coated nanosilver hydrocolloids (5 nm) affect the microbiological status and morphology of the jejunum of broiler chickens and their growth performance. The experiment was conducted on 60 chickens. The first group was the control. The chickens in group II received a silver nanoparticle hydrocolloid (Ag-nano) at a dose of 5 mg/kg b.w./day. The chickens in group III received a lipid-coated nanosilver hydrocolloid (AgL-nano) at a dose of 5 mg/kg b.w./day. Samples of digesta were taken from the jejunum during dissection and the total numbers of fungi, aerobic bacteria and bacteria of the coli group were determined in the samples. Samples of the jejunum were also collected during dissection to determine the length of the villi and depth of the crypts. The silver nanoparticles had no effect on growth performance or the histological picture of the jejunum. An increase was noted in the total number of aerobic mesophilic bacteria and a decrease in the number of coli group bacteria, which are facultative anaerobes, which indicates that the nanosilver had a selective effect on the microflora of the digestive tract in the chickens.

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