Effect of dietary defatted diatom biomass on egg production and quality of laying hens

Leng, Xiangjun; Hsu, Kun Nan; Austic, R. E.; Lei, Xin Gen

doi:10.1186/2049-1891-5-3

Cited by 27 publications

(14 citation statements)

References 31 publications

(38 reference statements)

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“…Vidyashankar et al (2014) reported adverse effects of high ash content in animals fed 20 % defatted biomass of a S. dimorphus strain as a single dose. Similar observations have been made by Leng et al (2014) with white leghorn laying hens when fed 15 % defatted diatom (Staurosira sp.) biomass.…”

Section: Discussionsupporting

confidence: 83%

Acute and subchronic safety assessment of Porphyridium purpureum biomass in the rat model

et al. 2015

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Porphyridium purpureum biomass was assessed for its acute and subchronic safety in albino Wistar rats and for its use as animal feed/human food application. P. purpureum contained 29.9 % protein, 7.99 % lipid, and 2.98 % phycoerythrin on dry basis. Polyunsaturated fatty acids constituted >50 % of the total fatty acids (53.9 % w/ w), with eicosapentaenoic acid as the predominant ω3 (21.9 %) and arachidonic acid as the predominant ω6 fatty acid (15.7 %) with an overall ω6/ω3 ratio of 0.42. The essential amino acids (EAAs) constituted 37.97 % (w/w) of proteins with leucine as the predominant amino acid (10.99 %). The EAA index was similar to casein and soybean proteins. Water absorption capacity (WAC; 3.86±0.01 g water g −1 biomass) and oil absorption capacity (OAC; 3.57±0.04 g oil g −1 biomass) were six times higher compared to the basal diet (WAC 0 . 6 6 ± 0 . 0 0 7 g w a t e r g − 1 f e e d a n d O A C 0 . 5 7 ± 0.02 g oil g −1 feed). The acute toxicity study showed that the biomass was safe at acute doses and LD 50 exceeded 5.0 g kg −1 body weight, the highest dose used in the study. In a subchronic study, rats were fed a diet containing 0, 2.5, 5.0, 7.5, and 10.0 % levels (w/w) for a period of 13 weeks. The biomass fortification did not induce any untoward changes in physiology such as body weight gain, relative organ weights, histopathology, and hematological and serum biochemical indices. However, supplementation of P. purpureum biomass resulted in decreased serum cholesterol and triglyceride levels compared to control groups indicating its high nutritional value.

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Section: Discussionsupporting

confidence: 83%

Acute and subchronic safety assessment of Porphyridium purpureum biomass in the rat model

et al. 2015

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“…The use of yellow lupin seed meal in the feeding mixture resulted in a more distinct yellow/red egg yolk (Dvorak et al 2007). In addition, defatted diatom microalgal biomass diet in laying hens increased the egg albumen weight and height compared with 7.5% defatted diatom microalgal biomass diets (Leng et al 2014). …”

Section: Discussionmentioning

confidence: 93%

Effects of lupin seed supplementation on egg production performance, and qualitative egg traits in laying hens

Park¹,

Lee²,

Kim³

2016

Vet. Med.

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ABSTRACT:We investigated the effects of lupin (Lupinus angustifolius L.) seed supplementation on egg production performance and egg quality in laying hens. A total of 120 Hy-Line Brown laying hens (29-week old) were used in a nine week trial. Laying hens were sorted into pens with six birds per pen and five pens per treatment. Treatments were (1) control, corn-soybean meal-based control diets, (2) 11% lupin (control + 11% lupin), (3) 16.5% lupin (control + 16.5% lupin), and (4) 22% lupin (control + 22% lupin). The average daily feed intake of laying hens fed with lupin diets was increased compared with control at Week 6 (P < 0.05). The egg production rate was higher in lupin diets than in the control diet at Week 3, 4, and 5 (P < 0.05). Supplementation with lupin improved the egg production rate linearly at Week 3, 4, 5, and 9, as dietary lupin increased from 11 to 22%. Laying hens fed with 11% and 16.5% lupin diets had higher rates of extra-large-sized egg production at Week 1 (quadratic, P = 0.04). Yolk colour was higher in hens fed lupin diets than in those fed with the control at Week 9 (P < 0.05). Supplementation of lupin in laying hen diets linearly improved the yolk colour (P < 0.05) at Week 5. In conclusion, supplementation of the diet with lupin can improve egg production and yolk colour with no apparent effect on average daily feed intake and eggshell quality in laying hens.

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“…Moreover, Spirulina enhances to increase feed intake without toxicity [26,27,28,29,30]. Further research is needed for the confirmation about of economic and feasibility to recommend in diets of different poultry species [31][32][33].…”

Section: Mortality and Economic Analysis Of Using Spirulinamentioning

confidence: 99%

Replacement of vitamin-mineral premix by Spirulina and its effect on the performance of broiler

Moury

Sarker

Prabakusuma

et al. 2018

jsa

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The main purpose of this study was to explore the effects of Spirulina (Spirulina platensis) as a feed supplement by replacing Vitamin-Mineral Premix on the performance of broiler. The study explored that final body weight was 1039, 1070, 1044, 1065, 1117 and 893 g/bird in group 1, 2, 3, 4, 5 and 6 where significantly (p<0.5) higher weight observed in Spirulina group (5) but lower in negative control group (6). Feed intake observed more or less similar in all groups (1483±24g; p>0.5). Feed conversion ratio (kg FI/kg LWG) observed significantly different like 1.72, 1.65, 1.69, 1.62, 1.61 and 1.99 in group 1, 2, 3, 4, 5 and 6 respectively (p<0.5) where higher in negative group (6) and control group (1), but is lowest and similar in 75% Spirulina group (4) and highest (100%) Spirulina group (5). %Ash of different dietary groups were 46.35, 46.54, 48.93, 49.93, 55.07 and 46.92 of group 1, 2, 3, 4, 5 and 6 respectively. The %ash of bone was gradually increased among dietary groups and the best result was obtained in 100% Spirulina group 5 (55.07). It also revealed that diets containing no vitamin-mineral premix with 100% Spirulina improve the performance of broiler. The findings suggest that poultry farmer can use spirulina as a feed item for broiler for more yield.

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Effect of dietary defatted diatom biomass on egg production and quality of laying hens

Cited by 27 publications

References 31 publications

Acute and subchronic safety assessment of Porphyridium purpureum biomass in the rat model

Acute and subchronic safety assessment of Porphyridium purpureum biomass in the rat model

Effects of lupin seed supplementation on egg production performance, and qualitative egg traits in laying hens

Replacement of vitamin-mineral premix by Spirulina and its effect on the performance of broiler

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