scholarly journals Influence of dietary phytase and protease, individually or in combination, on growth performance, intestinal morphology, microbiota composition and nutrient utilisation in broiler chickens fed sesame meal-based diets

2021 ◽  
Vol 20 (1) ◽  
pp. 2122-2130
Author(s):  
Hesamoddin Farrokhi ◽  
Rohullah Abdullahpour ◽  
Vahid Rezaeipour
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Intestinal Morphology ◽  
Microbiota Composition ◽  
Sesame Meal ◽  
Nutrient Utilisation

scholarly journals Effects of Clostridium butyricum- and Bacillus spp.-Based Potential Probiotics on the Growth Performance, Intestinal Morphology, Immune Responses, and Caecal Microbiota in Broilers

Antibiotics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 624
Author(s):  
Xinfu Zeng ◽  
Qing Li ◽  
Caimei Yang ◽  
Yang Yu ◽  
Zixian Fu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Basal Diet ◽  
Short Chain Fatty Acids ◽  
Clostridium Butyricum ◽  
Intestinal Morphology ◽  
Treatment Groups ◽  
Body Weights ◽  
Bacillus Spp

We aimed to investigate the effects of Clostridium butyricum-, Bacillus subtilis-, and Bacillus licheniformis-based potential probiotics on the growth performance, intestinal morphology, immune responses, and caecal short chain fatty acids (SCFAs) and microbial structure in broiler chickens. Three treatment groups containing a total of 1200 one-day-old AA broilers were included: birds fed with a basal diet only (Con), birds fed with added 1010 probiotics cfu/kg (ProL), and birds fed with added 1011 probiotics cfu/kg (ProH). The dietary probiotics significantly improved the final and average body weights and serum immunoglobulins A, M, and Y. The probiotics also enhanced the ileal morphology and improved the caecal acetate, butyrate, and propionate contents. Furthermore, 16S rRNA sequencing revealed that dietary compound probiotics modulated the caecal microflora composition as follows: (1) all birds shared 2794 observed taxonomic units; (2) treatment groups were well separated in the PCA and PCoA analysis; (3) the relative abundance of Parabacteroides, Ruminococcaceae_UCG-014, Barnesiella, Odoribacter, [Eubacterium_coprostanoligenes_group], [Ruminococcus]_torques_group, and Butyricimonas significantly varied between treatments. The compound probiotics improved the growth performance, serum immune responses, the ratio of ileal villus height to crypt depth, and major caecal SCFAs in broiler chickens. The dietary C. butyricum-, B. subtilis-, and B. licheniformis-based probiotics improved overall broiler health and would benefit the poultry industry.

Growth performance and intestinal morphology in broiler chickens produced from hyperthyroid breeder hens

2013 ◽  
Vol 53 (10) ◽  
pp. 1046 ◽  
Author(s):  
A. Akhlaghi ◽  
M. J. Zamiri ◽  
Y. Jafari Ahangari ◽  
M. R. Mollasalehi ◽  
H. Shojaie ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Growth Performance ◽  
Goblet Cell ◽  
Broiler Chickens ◽  
Relative Weight ◽  
Cell Number ◽  
Intestinal Morphology ◽  
Early Effect ◽  
Breeder Hens ◽  
Low Ambient Temperature

An association between induced maternal hyperthyroidism and a decreased incidence of cold-induced ascites in broiler chickens has been reported recently. There are also reports suggesting that thyroid hormones have an effect on intestine, a high oxygen-demanding organ. The present study aimed to determine whether the ascites-attenuating effect of maternal hyperthyroidism is associated with morphological changes in intestine and with probable adverse effects on growth performance in progeny chicks. Eighty-eight broiler breeder hens were allotted to control or hyperthyroid [HYPER; thyroxine-treated] groups, and artificially inseminated. Hatching eggs (n = 924) were incubated and day-old male chicks (n = 288) were reared for 42 days under standard or low ambient temperature. Plasma thyroxine was higher in the HYPER hens and their embryos at internal pipping. Maternal hyperthyroidism did not adversely affect the feed : gain ratio and carcass weight, whereas cold stress impaired them. A higher relative weight was found at 42 days of age for all intestinal regions at low ambient temperature. The duodenal and jejunal crypt depths (CD) were lower in HYPER group at 7 days of age. Cold exposure decreased the duodenal and jejunal villus height and CD, and increased the ileal goblet cell number at 21 days. On Day 42, higher values were recorded for CD, goblet cell number, and epithelial thickness of different intestinal regions in cold-exposed birds. In conclusion, growth performance was not adversely influenced by maternal hyperthyroidism and its minimal early effect on intestinal morphology does not appear to be the underlying mechanism for decreased incidence of ascites in broilers.

scholarly journals An assessment of the influence of macronutrients on growth performance and nutrient utilisation in broiler chickens by nutritional geometry

2016 ◽  
Vol 116 (12) ◽  
pp. 2129-2138 ◽  
Author(s):  
Sonia Y. Liu ◽  
Peter H. Selle ◽  
David Raubenheimer ◽  
David J. Cadogan ◽  
Stephen J. Simpson ◽  
...  
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Energy Intake ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Muscle Protein ◽  
Feed Conversion ◽  
Response Curves ◽  
Protein Energy ◽  
Nutrient Utilisation

AbstractThe right-angled triangle mixture experiment was designed to include fourteen diets with different concentrations of starch, protein and lipid. Experimental diets were offered to male Ross 308 broiler chickens from 10 to 23 d after hatching, and response curves and surfaces were generated to illustrate the influence of macronutrients on growth performance and nutrient utilisations. Despite the primary function of macronutrients, especially protein, may not be providing energy, macronutrients were expressed as energy derived from starch, protein and fat for statistical purposes in the mixture design. Energy derived from lipid had a greater impact on feed intake than energy derived from starch and protein. When we compared the influence of starch and protein on feed intake, ‘equal distance rule’ was observed, which means the animal consumes feed to the point on its respective nutritional rails where the shortage of starch exactly equals the surplus of consumed protein. Increasing the protein-derived energy intake increased weight gain in broiler chickens, whereas energy intake derived from starch and lipid had little impact on weight gain. Feed conversion ratio (FCR) may be reduced by either increasing protein energy intake or decreasing starch energy intake. As the slope of the contours was less than 1, the influence of starch energy intakes on FCR exceeded that of protein energy intakes. In conclusion, energy derived from protein is more important than non-protein energy in terms of weight gain, and a balance between protein and energy supplies is required for efficient muscle protein deposition.

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