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Fulltext Effects of prebiotic, protein level, and stocking density on performance, immunity, and stress indicators of broilers

Houshmand M, Azhar K, Zulkifli I, Bejo MH, Kamyab A

Poult Sci, 2012 Feb;91(2):393-401.
PMID: 22252353 DOI: 10.3382/ps.2010-01050

An experiment was conducted to determine the effects of period on the performance, immunity, and some stress indicators of broilers fed 2 levels of protein and stocked at a normal or high stocking density. Experimental treatments consisted of a 2 × 2 × 2 factorial arrangement with 2 levels of prebiotic (with or without prebiotic), 2 levels of dietary CP [NRC-recommended or low CP level (85% of NRC-recommended level)], and 2 levels of stocking density (10 birds/m(2) as the normal density or 16 birds/m(2) as the high density), for a total of 8 treatments. Each treatment had 5 replicates (cages). Birds were reared in 3-tiered battery cages with wire floors in an open-sided housing system under natural tropical conditions. Housing and general management practices were similar for all treatment groups. Starter and finisher diets in mash form were fed from 1 to 21 d and 22 to 42 d of age, respectively. Supplementation with a prebiotic had no significant effect on performance, immunity, and stress indicators (blood glucose, cholesterol, corticosterone, and heterophil:lymphocyte ratio). Protein level significantly influenced broiler performance but did not affect immunity or stress indicators (except for cholesterol level). The normal stocking density resulted in better FCR and also higher antibody titer against Newcastle disease compared with the high stocking density. However, density had no significant effect on blood levels of glucose, cholesterol, corticosterone, and the heterophil:lymphocyte ratio. Significant interactions between protein level and stocking density were observed for BW gain and final BW. The results indicated that, under the conditions of this experiment, dietary addition of a prebiotic had no significant effect on the performance, immunity, and stress indicators of broilers.
Effects of non-antibiotic feed additives on performance, tibial dyschondroplasia incidence and tibia characteristics of broilers fed low-calcium diets

Houshmand M, Azhar K, Zulkifli I, Bejo MH, Meimandipour A, Kamyab A

J Anim Physiol Anim Nutr (Berl), 2011 Jun;95(3):351-8.
PMID: 21156001 DOI: 10.1111/j.1439-0396.2010.01061.x

This experiment was conducted to investigate and compare the efficacy of different feed additives on performance, tibial dyschondroplasia (TD) incidence and tibia characteristics of male broilers fed low-calcium diets. A completely randomized design, with six treatments and five replicates of five chicks per each was used. Experimental treatments were: (i) Basal diet containing recommended level of calcium (0.9%) as control treatment (Ctrl), (ii) low-calcium (0.67%) diet without any additive (LC), (iii) low-calcium diet + probiotic (2 g/kg diet), (iv) low-calcium diet + prebiotic (2 g/kg diet), (v) low-calcium diet + synbiotic [mix of probiotic and prebiotic (each 2 g/kg diet)], (vi) low-calcium diet + organic acid (1.5 g/kg diet). Birds were reared in an open-sided house system under natural tropical condition until 21 days of age. Feeding with low-calcium diet negatively influenced broiler performance (body weight, body weight gain and feed conversion ratio) and tibia characteristics, whereas dietary inclusion of all feed additives had beneficial effects on above-mentioned parameters and helped the birds to overcome problems related to low-calcium diets. Different treatments had no effect on TD incidence.
Gastrointestinal tract morphological alteration by unpleasant physical treatment and modulating role of Lactobacillus in broilers

Meimandipour A, Hair-Bejo M, Shuhaimi M, Azhar K, Soleimani AF, Rasti B, et al.

Br Poult Sci, 2010 Feb;51(1):52-9.
PMID: 20390569 DOI: 10.1080/00071660903394455

1. An experiment was conducted to determine the effects of supposedly unpleasant physical treatment on broiler performance, small intestinal development and ameliorating role of probiotics. 2. The following treatments were applied from day one: (1) chicks exposed to normal human contact fed basal diet (control); (2) chicks were exposed to unpleasant physical treatment and fed basal diet (UPT-BD); and (3) chicks were exposed to unpleasant physical treatment and fed basal diet supplemented with Lactobacillus (UPT-BDL). Chicks were exposed to UPT from days 1 to 21. Different segments of gastrointestinal tract were sampled at 14, 28, 35 and 42 d of age. 3. Broilers of UPT-BD had lower feed consumption compared with control group at 7 d of age. Overall, UPT-BDL birds showed higher body weight gain (BWG) and better feed conversion ratio (FCR) over the course of the experiment. 4. Birds of UPT-BD had lower concentrations of lactic, propionic and butyric acids in the caecum as compared with other groups at 14 d of age. Acetic acid concentration was profoundly decreased in both UPT groups compared to the control. 5. Duodenal villus height of UPT-BD broilers showed a slight reduction compared to the control and UPT-BDL birds at 14 d of age. Afterwards until day 42, UPT-BDL birds showed the highest villus height among treatments in different parts of the small intestine. 6. The results suggested that, even though UPT did not have significant inhibitory effects on the development of the small intestine and broiler performance, it negatively affected bacterial metabolic end products in the caecum, which could be ameliorated by the addition of Lactobacillus.
Fulltext In vitro fermentation of broiler cecal content: the role of lactobacilli and pH value on the composition of microbiota and end products fermentation

Meimandipour A, Shuhaimi M, Hair-Bejo M, Azhar K, Kabeir BM, Rasti B, et al.

Lett Appl Microbiol, 2009 Oct;49(4):415-20.
PMID: 19725887 DOI: 10.1111/j.1472-765X.2009.02674.x

To assess the probiotic effects of Lactobacillus agilis JCM 1048 and L. salivarius ssp. salicinius JCM 1230 and the pH on the cecal microflora of chicken and metabolic end products.
Fulltext Selected microbial groups and short-chain fatty acids profile in a simulated chicken cecum supplemented with two strains of Lactobacillus

Meimandipour A, Shuhaimi M, Soleimani AF, Azhar K, Hair-Bejo M, Kabeir BM, et al.

Poult Sci, 2010 Mar;89(3):470-6.
PMID: 20181862 DOI: 10.3382/ps.2009-00495

Among the bacterial fermentation end products in the chicken cecum, butyrate is of particular importance because of its nutritional properties for the epithelial cell and pathogen inhibitory effects in the gut. An in vitro experiment, operated with batch bioreactor, was conducted to quantify butyric-producing bacteria in a simulated broiler cecum supplemented with Lactobacillus salivarius ssp. salicinius JCM 1230 and Lactobacillus agilis JCM 1048 during 24 h of incubation. Selected bacterial species were determined by real-time PCR and short-chain fatty acids and lactate concentrations were monitored. The results showed that after 24 h of incubation, Lactobacillus supplementation significantly increased the number of lactobacilli, bifidobacteria and Faecalibacterium prausnitzii in medium containing cecal content and lactobacilli supplementation (Cc + L) compared with the control (Cc). Addition of lactobacilli did not alter Escherichia coli and Clostridium butyricum, whereas it significantly (P < 0.05) reduced Salmonella in treatment Cc + L compared with the Cc treatment. Propionate and butyrate formation were significantly (P < 0.05) increased in treatment Cc + L as compared with the Cc treatment. Lactate was only detected in treatment containing 2 Lactobacillus strains. After 24 h of incubation, acetate concentration significantly (P < 0.05) decreased in all treatments. It was suggested that lactate produced by Lactobacillus in the cecal content improved the growth of butyric producers such as F. prausnitzii, which significantly increased butyrate accumulation. Additionally, the results showed that butyrate and propionate inhibited Salmonella without influencing the E. coli profile.
Morbidly adherent placenta: One-year case series in a tertiary hospital

Roziana R, Kamarul Azhar K, Lau JH, Aina MAA, Nadia R, Siti Nordiana A, et al.

Med J Malaysia, 2019 04;74(2):128-132.
PMID: 31079123

OBJECTIVE: To analyse the clinical characteristics of patients with morbidly adherent placenta (MAP). Findings of this study will be used to identify patients at risk of MAP and to outline the best management strategy to deal with this devastating condition.
METHODS: Delivery records in Hospital Sultanah Nur Zahirah, Terengganu from 1st. January 2016 until 31st. December 2016 were reviewed and analysed.
RESULTS: Out of the 15,837 deliveries, eight cases of MAP were identified. Six out of eight patients had previous caesarean scar with concomitant placenta praevia, the other two patients had previous caesarean scar with history of placenta praevia in previous pregnancies. Seven out of eight cases were suspected to have MAP based on risk factors. Correct diagnosis was made by ultrasound in five patients, all with histologically confirmed moderate/severe degree of abnormal placentation. The other two cases of 'unlikely MAP', demonstrated segmental MAP intra-operatively with histologically confirmed milder degree of abnormal placentation. Total intraoperative blood loss ranged from 0.8 to 20 litres. Prophylactic internal iliac artery balloon occlusion was associated with significantly less blood loss.
CONCLUSION: Antenatal diagnosis is essential in outlining the best management strategy in patients with MAP. Ultrasound may not be accurate in ruling out lower degree of MAP. Apart from having a scarred uterus with concomitant placenta praevia, history of having placenta praevia in previous pregnancy is also a risk factor for MAP. Prophylactic internal iliac artery balloon occlusion is associated with significantly less blood loss and should be considered in cases suspected with MAP.