Effects of<i>Lactobacillus acidophilus</i>D2/CSL on laying hen performance

Gallazzi, D.; Giardini, A.; Mangiagalli, M.G.; Marelli, S.P.; Ferrazzi, V.; Orsi, Carla; Cavalchini, L. Guidobono

doi:10.4081/ijas.2008.27

Cited by 41 publications

(30 citation statements)

References 34 publications

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“…Previous investigators have revealed that addition of probiotics to the feed of poultry (broilers and laying hens) has beneficial effects on growth performance and egg production. In laying hens, Gallazzi et al (2008) indicated that egg production and FCR were significantly improved when hens were treated with probiotic strain Lactobacillus acidophilus D2/CSL. Similar results were found by Li et al (2005) when a Bacillus subtilis culture was used.…”

Section: Discussionmentioning

confidence: 99%

The potential for probiotics to prevent reproductive tract lesions in free-range laying hens

Shini

Blackall

2013

Anim. Prod. Sci.

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Abstract.A study was undertaken to investigate the ability of two commercial probiotics applied in free-range laying hens (from 18 to 22 weeks of age) in reducing the occurrence of reproductive tract pathologies, and improving hen health and performance. In all, 630 17-week-old brown layers were transferred to a freshly cleaned free-range laying facility, and randomly divided into three groups, with three replicates of 70 birds each. Both probiotics were administered in the drinking water (Groups 1 and 2) on a daily basis for 4 weeks, while Group 3 was left untreated. At 38 weeks of age, the results demonstrated that treatment with either probiotic significantly reduced the occurrence of reproductive tract pathologies (control vs probiotics, 33% vs 22% and 11%; P < 0.01), mortalities (control vs probiotics; 3.8% vs 1.5 and 1.9%; P < 0.01), and increased the performance of hens, for another 20 weeks post-treatments (hen day production for control vs probiotics 75% vs 90% and 94%; P < 0.01). Birds treated with probiotics maintained their bodyweight and egg weights at standard ranges, while untreated birds did not perform at this level. Although we were unable to show any effect on cloacal bacterial colonisation, the results of the present study provided some initial evidence that reproductive pathologies that often cause drops in egg production and sudden deaths of birds, can be reduced if free range hens are treated with a commercial probiotic before or during the onset of lay. The use of a probiotic benefits the health and performance status of hens, resulting in better hen welfare and significant economic gains to egg producers.

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Section: Discussionmentioning

confidence: 99%

The potential for probiotics to prevent reproductive tract lesions in free-range laying hens

Shini

Blackall

2013

Anim. Prod. Sci.

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“…Probiotic supplementation has been shown to improve the performance and efficiency of nutrient use in broilers [38,[44][45][46][47][48] and in laying hens and pullets [49][50][51][52][53][54][55][56]. This improvement is presumed to be a result of bacterial antagonism, competition for colonization sites, competition for nutrients, a reduction in the production of toxic compounds, or modulation of the immune system [13].…”

Section: Probiotics: Product Development and Purported Benefitsmentioning

confidence: 99%

Probiotics and phytogenics for poultry: Myth or reality?

Applegate

Klose

Steiner³

et al. 2010

Journal of Applied Poultry Research

144

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Removal and restriction of subtherapeutic antibiotics from poultry diets in many parts of the world has amplified interest in improving intestinal health and nutrient utilization. Some probiotic (direct-fed microbials) and plant-derived (phytogenic) feed additives are gaining market presence. Defined probiotic cultures have the potential to succeed, in large part because of in vitro screening and selection. However, regulatory approval delays, particularly in Europe, have stymied the commercial application of some microorganisms in poultry diets. Phytogenic feed additives have demonstrated ranges of antimicrobial activities in vitro and are building a track record of improvements in bird performance. Hesitation by nutritionists to incorporate these feed additives are due in part to 1) unfamiliarity, 2) the overselling of plausible effects by industry, 3) product inconsistency, 4) a lack of documented physiological and microbiological effects in vivo, and, in the case of probiotics, 5) a lack of documentation of persistence.

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“…Some investigations on probiotics with laying hens indicated positive responses to dietary supplementation (Li et al, 2006;Kurtoglu et al, 2004). In addition, Gallazzi et al (2008) and observed significant improvements in egg production in layers receiving probiotics. Prebiotics are nondigestible carbohydrates; many of these carbohydrates are short chains of monosaccharides, called oligosaccharides.…”

Section: Introductionmentioning

confidence: 98%

“…Numerous studies in humans and animals have been conducted to assess the ability of probiotics to change the type and number of the microflora in the digestive tract (Gibson and Fuller, 2000). Some investigations on probiotics with laying hens indicated positive responses to dietary supplementation (Li et al, 2006;Kurtoglu et al, 2004). In addition, Gallazzi et al (2008) and observed significant improvements in egg production in layers receiving probiotics.…”

Section: Introductionmentioning

confidence: 99%

Dietary Inclusion of Probiotics, Prebiotics and Synbiotic and Evaluating Performance of Laying Hens

Zarei¹,

Ehsani²,

Torki³

2011

American Journal of Agricultural and Biological Sciences

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Problem Statement:This study was conduct to compare effects of various commercial feed additives on performance of laying hens. Approach: To evaluate effects of dietary inclusion of feed additives (Yeasturer, A-Max, Thepax, Fermacto and Biomin) on performance of laying hens, 216 Lohmann LSL-Lite hens were divided in 36 cages (n = 6). Approach Hens in 6 cages (replicates) were assigned to feed on one of the 6 iso-caloric and iso-nitrogenous experimental diets (ME = 2720 Kcal Kg −1 and CP = 145 g kg -1 ) including control and diets with 0.5 g kg −1 of feed additives. Collected data of Feed Intake (FI), Egg Production (EP), Egg Weight (EW), Egg Mass (EM) and calculated Feed Conversion Ratio (FCR) during 6-week trial period was analyzed based on completely randomized design using GLM procedure of SAS. Results and Conclusions: Dietary additive inclusion significantly affected on EW on 1-3 and 3-6 weeks. Feed additive did not have significant effect on EP, FCR, FI and EM. There was no significant difference in EP, EM, FI and FCR among the experimental groups. Hens received Yeasturer or A-Max showed improved EW compared to hens fed the control diet during weeks 1-3. Hens fed diets included additives showed improved egg shell weight and thickness compared to hens fed the control diet. There was no significant effect of dietary treatment on blood levels of cholesterol, TG and HDL. Adding Thepax or Biomin to diet significantly reduced blood levels of LDL compared to hens fed the other experimental diets. There was no significant effect of dietary treatment on diacritical counts of white blood cells. Recommendations: According to the results of the present study, probiotic Yesture and A-Max can be included in laying hens diets to improve EM. In addition, the commercial feed additives (Yeasturer, A-Max, Thepax, Fermacto and Biomin) used in this study had beneficial effects on egg shell quality characteristics in terms of shell weight and thickness and to decrease egg abnormalities due to poor shell, these feed additives could be recommendable.

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Effects ofLactobacillus acidophilusD2/CSL on laying hen performance

Cited by 41 publications

References 34 publications

The potential for probiotics to prevent reproductive tract lesions in free-range laying hens

The potential for probiotics to prevent reproductive tract lesions in free-range laying hens

Probiotics and phytogenics for poultry: Myth or reality?

Dietary Inclusion of Probiotics, Prebiotics and Synbiotic and Evaluating Performance of Laying Hens

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