جستجوی مقالات مرتبط با کلیدواژه "small intestine morphology" در نشریات گروه "علوم دام"

In this experiment, the effect of two types of zinc-methionine (Zn-Met) chelate on performance and bone characteristics of broiler chickens were considered in a completely randomized design, using 490 Ross-308 broiler chickens (one-d-old, mixed sexes) with 7 treatments, 5 replicates and 14 birds in each replicate. Treatment consisted of: 1) control (basal diet), 2-4) control + 0.2, 0.4 and 0.8 mg/kg Zn-Meth of Zin-Pro® respectively and 5-7), control + 0.2, 0.4 and 0.8 mg/kg zn-Met synthetized by Ilam University. Results showed that as compared to group, none of zn-Met source had significant effect on broiler chickens feed intake, body weight, FCR and EPEF, carcass and breast and thigh percentages, serum glucose, triglyceride, cholesterol, LDL-cholesterol and HDL-cholesterol, triglyceride and Ca concentrations, activity of Alkaline phosphatase, Aspartate transaminase and Alanine aminotransferase enzymes and tibia characteristics including weight, dry matter and ash percentages, length, width and diameter and P and Ca percentages (P < 0.05) while broilers fed diet containing Zn-Meth had higher serum and tibia Zn concentration, higher villous height and villous height to crypt depth ratio and lower villous width in ileum and jejunum as compared to negative control group (P < 0.05). Generally, both of the chelates had similar effects on broiler chicken’s performance, small intestine morphology and tibia traits and Iranian kind of Zn-Meth has capability to substitution with foreign source of it although needs to further investigations.

The effect of peanut pod as insoluble fiber source in diets on growth performance, small intestine morphology and nutrient digestibility of broilers was evaluated. This study was conducted using 320 Ross-308 broiler chickens in a completely randomized design with four treatments diets (containing 0 (control), 2.5, five or 7.5 percent peanut pod), with five replicates and 16 birds in each from 11 to 42 days of age. At the growth phase (11 to 24 d) dietary peanut pod decreased feed intake and feed conversion ratio, however, the birds that fed the diet containing 7.5 percent had higher daily weight gain (P

Oak acorn can be use as a cheap and a readily available feed in many countries such as Iran.
This study was conducted to investigate the effects of different levels of oak acorn on rumen and small intestine morphology and gastrointestinal pH in Markhoz goat.
Twenty four Markhoz male kids with mean body weight 16±1 Kg and 4-5 months of age in completely randomized design was used. Experimental period was 105 days and experimental diets consisted of control 0%, 8%, 17% and 25% oak acorn. The kids in all 4 groups were fed alfalfa hey and concentrate (barley for control and oak acorn as replacement in experimental groups).
The results showed that the experimental diets had no significant (P> 0.05) on rumen morphology (height of papilla, width of papilla, surface of papilla, density of papilla and rumen wall thickness) and morphology of intestine (height of villi, width of villi, surface of villi, depth of crypt and ratio of villi height to crypt depth). Also, experimental diets had no significant effects (P>0.05) on pH of different parts of rumen and small intestine.
The results of this study showed that using 25% of oak acorn in Markhoz kids had no negative effects on rumen and small intestine morphology and digestive pH in the contents of gastrointestinal.

The aim of this study was to evaluate the effect of in ovo injection of L- Glutamine on pre and post hatch growth performance، carcass traits، jejunum morphology and immune responses of broiler chickens. Four hundred eighty fertile Ross 308 broiler breeder eggs in a completely randomized design were used into 6 experimental groups، 4 replicates of 20 eggs each. Treatment groups were: non-injected control، sham control (sterile water)، 10، 20، 30 and 40 mg glutamine were dissolved in 1ml sterile water and then inoculated into amniotic fluid of the 17. 5 d- old embryo through broad end of the egg. After hatch، 10 chicks per each replicate were distributed in pens and reared up to 42 d of age. The results showed that the hatchling weights and overall daily body weight gain were 3. 6% and 3. 8% higher in the group given 40 mg glutamine than noninjected control، respectively (P<0. 05). At day 24، relative weight of breast muscle was influenced by embryo feeding of glutamine (P<0. 05)، but relative weights of liver، gizzard and heart were not affected (P<0. 05). Compared with untreated control، glutamine was enhanced jejunal villi height and crypt depth in 3 and 24 days of post hatch. By 40 mg glutamine injection، the humoral and cell mediated immune responses were improved. The results suggest that in ovo injection of 40 mg L-glutamine into amniotic fluid of growing embryo can improve hatchling weight، average daily gain، morphometric development of the intestinal tract and humoral and cellular immune responses of broiler chickens.