scholarly journals Effects of Eimeria tenella Infection on Key Parameters for Feed Efficiency in Broiler Chickens

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3428
Author(s):  
Janghan Choi ◽  
Hanseo Ko ◽  
Yuguo Hou Tompkins ◽  
Po-Yun Teng ◽  
Jeferson M. Lourenco ◽  
...  
Keyword(s):  
Moisture Content ◽  
Post Infection ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Intestinal Morphology ◽  
Apparent Digestibility ◽  
Lesion Score ◽  
Oral Gavage ◽  
Small Intestinal ◽  
Gastrointestinal Permeability

The purpose of the study was to investigate effects of different inoculation dosages of E. tenella on growth performance, gastrointestinal permeability, oocyst shedding, intestinal morphology, fecal consistency, ileal apparent digestibility, antioxidant capacity, and cecal VFA profile in broiler chickens. Five different dosages (T0: 0, T1: 6250, T2: 12,500, T3: 25,000, and T4: 50,000) of E. tenella oocysts were inoculated via oral gavage to fourteen-day-old broilers. Inoculation of E. tenella linearly increased FCR (p < 0.05), and feed intake was quadratically increased on 6 days post-infection (dpi; p = 0.08) and 7 dpi (p = 0.09). Cecal lesion score of each treatment was T0: 0; T1: 0.39 ± 0.14; T2: 0.93 ± 0.21; T3: 1.25 ± 0.16; and T4: 1.58 ± 0.2. Cecal total VFA production was linearly reduced due to E. tenella infection on 6 dpi (p < 0.01). E. tenella infection deepened cecal crypts depth on 6 dpi (CD; p < 0.05). Gastrointestinal permeability tended to be linearly increased (p = 0.07). E. tenella infection tended to linearly reduce duodenal VH (p = 0.1) and jejunal VH on 9 dpi (p = 0.09). Different dosages of E. tenella modulated the tendency of fecal moisture content and oocyst shedding. Therefore, E. tenella infection impaired feed efficiency and small intestinal health mainly by reducing cecal VFA production and deepening cecal CD in broilers.

scholarly journals Effect of processed quinoa on performance traits, small intestinal morphology, and blood parameters of Ross broiler chickens

2021 ◽  
Author(s):  
Negin Zeyghami ◽  
Mohammad Ali Jafari ◽  
Mehrdad Irani
Keyword(s):  
Broiler Chickens ◽  
Good Alternative ◽  
Blood Parameters ◽  
Intestinal Morphology ◽  
Blood Cholesterol ◽  
Poultry Feed ◽  
Control Treatment ◽  
Feed Conversion ◽  
Processing Methods ◽  
Small Intestinal

Abstract Restrictions on access to important components of poultry rations such as corn and soybean meal are among the biggest issues in the poultry feed industry. Quinoa with a very high nutritional value can be a good alternative. The present study aimed to investigate the effect of processed quinoa seeds on performance, small intestinal morphology, and blood parameters of Ross broiler chickens. The present experiment was performed with 5 treatments, 4 replications, and 15 chickens per pen in a completely randomized design. Hydrothermal, extrusion, and expansion methods were used to process quinoa seeds. Apart from the control treatment, 15% of quinoa seeds were included in the other treatments. The studied traits were recorded. The general linear model procedure in SAS software was used to compare the means of treatments. The effect of processing methods on body weight, feed conversion ratio, total protein, uric acid, and blood cholesterol, villi height, crypt villi depth, and length to depth ratio of cryogenic villi of jejunum were significant (P<0.01). Quinoa processing improved its nutritional properties. In general, extrusion and expansion processing methods were more effective than the hydrothermal method in improving the quality of quinoa.

scholarly journals Performance, intestinal histomorphology and bone composition of broiler chickens fed diets supplemented with genistein

2020 ◽  
Vol 50 (2) ◽  
pp. 241-252
Author(s):  
M. Glisic ◽  
M. Boskovic ◽  
M. Z. Baltic ◽  
D. Sefer ◽  
A. Radovanovic ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Basal Diet ◽  
Intestinal Morphology ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Supplementation Period ◽  
Wet Weight ◽  
Small Intestinal ◽  
Positive Effect ◽  
Lactobacillus Spp

The effect of dietary genistein on performance, intestinal morphology, caecal Lactobacillus spp. count, and tibia composition in broiler chickens after 21 and 37 days of feeding was investigated. A total of 360 Cobb 500 broiler chickens (21 days old) were randomly allocated to five treatments with six replicates of 12 birds each. They were fed a basal diet (C) or a basal diet supplemented with 200 (T1), 400 (T2), 600 (T3) and 800 (T4) mg genistein/kg of feed. Genistein supplementation did not affect feed intake, but improved bodyweight, weight gain and feed conversion ratio (FCR) after 21 days, while 600 mg/kg led to a significant increase in FCR after 37 days of feeding. Plasma triglyceride level decreased with dietary genistein after 21 days, while increases were found in T3 and T4 groups after prolonged supplementation. Significantly improved duodenal and jejunal villus length and width, crypt depth and villus/crypt ratio were observed after the first and the second finishing periods, respectively, while adverse effects were found in the ileum for both periods. At 42 days old, greater spleen and heart weights were measured in broilers fed diets with 800 mg/kg than in other broiler groups. The shorter genistein supplementation period (21 days) of 200 and 400 mg/kg had a positive effect on tibia wet weight, ash and calcium (Ca) content, while 37 days of the higher genistein doses administered to the T2, T3 and T4 birds significantly increased caecal lactic acid bacteria (LAB) counts. Thus, recommended doses should not exceed 400 mg/kg. Keywords: broiler performance, blood triglyceride, Lactobacillus, prolonged fattening, small intestinal morphology

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