scholarly journals Performance of laying hens fed on practical diets containing different levels of supplemental biotin during the rearing and laying stages

1980 ◽  
Vol 44 (2) ◽  
pp. 151-159 ◽  
Author(s):  
C. C. Whitehead
Keyword(s):  
Egg Size ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Egg Laying ◽  
Apparent Effect ◽  
Laying Performance ◽  
Egg Number ◽  
Biotin Supplementation ◽  
Different Levels

1. The effect of biotin supplementation of low-biotin practical diets during rearing and laying stages on performance was studied in White Leghorn-type laying hens.2. Biotin supplementation during rearing did not have any apparent effect on the condition of the bird at point-of-lay or on subsequent laying performance.3. Biotin supplementation during lay did not have any beneficial effect upon egg number, egg size or food intake or food conversion efficiency.4. Internal egg quality, as reflected by albumen height, was slightly improved by biotin supplementation of layer's diet.5. Input-output relationships were calculated for the incorporation of biotin in egg yolk.6. Metabolic measurements suggested that biotin concentration in egg yolk was the best criterion of biotin status in the hen.7. It is concluded that practical diets contain sufficient biotin to support optimum egg-laying performance in hens.

scholarly journals Performance of Laying Hens Fed Sorghum Based Diets Supplemented with Enzymes

2021 ◽  
Vol 43 (1) ◽  
pp. 224-232
Author(s):  
O. M. Agunbiade ◽  
P. A. Onimisi ◽  
J. J. Omage
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Quality Characteristics ◽  
Egg Laying ◽  
The Other ◽  
Control Treatment ◽  
Feed Cost ◽  
Laying Performance ◽  
Dietary Treatments

Sorghum is the primary alternative feedstuff for corn in some developed countries in the production of poultry. Thus, four hundred and fifty 32 weeks old Lohmann Brown laying hens were used in a study to evaluate the effect of replacing maize with sorghum with or without enzymes supplementation, on egg laying performance and egg quality characteristics of laying hens. Birds were distributed randomly into six dietary treatments with three replicates per treatment, each replicate had 25 birds with uniform initial group weights. The treatments included maize without enzymes (T1); sorghum without enzymes (T2); as controls respectively, while T3, T4, T5, and T6 contained sorghum based diets with phytase, protease, G2G, and a combination of protease and G2G respectively. Laying performance, cost of production, and egg quality characteristics were determined for the period of the trial, 33-56 weeks of age of the birds. All data obtained were subjected to analysis of variance, using the completely randomized design (CRD) and significant differences among treatment means were compared using the Tukey test. Significant (p<0.05) differences were observed among dietary treatments but with no defined trend observed for egg production traits. Daily feed intake was significantly (p<0.05) higher in maize control diet compared to the other treatments. Diets supplemented with phytase (T3), protease (14), and combination of protease and roxazyme G2G (T6) had significantly (p<0.05) better feed conversion ratio with T3 having the lowest value of 4.01 compared to the other treatments. For feed cost/dozen egg (N), Kg feed/dozen eggs, income above feed cost at N30 per egg, and income above control treatment; phytase (T3), protease (T4), roxazyme 626 (T5), and protease + roxacyme G2G (T6) diets in this study showed better performance than the control. Sorghum diet without enzyme had significantly (p<0.05) least performance for egg number. Hen housed egg production (HHP) and hen day egg production (HDP) compared to the other treatments while sorghum diet with phytase had the highest value (60.12g/day) for average egg weight compared to the other treatments. Egg quality characteristics showed the best performance for dietary treatments supplemented with phytase (T3) in all the other parameters considered, apart from the albumen height, yolk diameter, and yolk index. It was concluded therefore, that sorghum with phytase and protease supplementations can be used in layers' diets as a substitute for maize for optimum egg production.

scholarly journals EDIBLEEGGQUALITYWHENIODINEISINTRODUCEDINTOLAYINGHENBODY

2021 ◽  
pp. 65-70
Author(s):  
L.V. Rastopshina ◽  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Federal District ◽  
Egg Yolk ◽  
Egg White ◽  
Egg Laying ◽  
The Body ◽  
Control Group ◽  
Trace Element Deficiency

The Altai Region along with the regions of the Siberian Federal District belongs to the zone with trace element deficiency including iodine deficiency. The research goal was to study the effect of iodine on edible egg quality of laying hens of the Rodonit cross. At the final stage of egg-laying, 4 groups of 4 laying hens were formed. No iodine was administered to the hens of the 1st control group. Starch-based iodine product was administered to the birds of the 2nd, 3rd and 4th trial groups into the lower third of the neck, under the wing and into the rump area in a dose of 1.5 mg per head. The egg production intensity in the trial groups was higher by 21.3-28.8%. Egg weight in the 1st control group was 65.6 ± 1.33g which was lower than that in the trial groups by 4.4% (2nd group); 3.7% (3rd group) and 1.5% 4th group). All eggs belonged to “select” grade. The 3rd and 4th trial groups had less egg white by 3.8 and 2.7%; the egg-yolk content increases in the eggs of the 2nd, 3rd and 4th trial groups by 1.2%, 9.4% and 2.4%, respectively, and the eggshell weight by 1.2-9.4% as com-pared to the control. The ratio of egg white and egg-yolk weight in the eggs of the trial groups was lower than in the control group by 9.38-19.29%, but the ratio of egg-yolk to egg white was by 10.4-23.9% higher. The following indices were higher in the trial groups as compared to the control: egg white index -by 1.4-17.1%; egg-yolk -by 3.2-6.4%; Haugh unit -by 7.2-11.1%; eggshell thickness -by 3.9-8.3%. The best results were obtained with the administra-tion of iodine to the hens in the region of the lower third of the neck. The enrichment of the body of laying hens of the Rodonit cross with iodine makes it possible to obtain the profitability of edible egg production at the level of 28.6-41.0%.

scholarly journals Effect of anti-prolactin drug and peppermint on broodiness, laying performance and egg quality in indigenous hens

2017 ◽  
Vol 2 (4) ◽  
pp. 547-554 ◽  
Author(s):  
Mst Nasrin Banu ◽  
Md Bazlar Rashid ◽  
Md Mahmudul Hasan ◽  
Fahima Binte Aziz ◽  
Md Rakibul Islam ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Egg Laying ◽  
Mentha Piperita ◽  
Sequence Length ◽  
Control Group ◽  
Laying Performance ◽  
Group B

The study was conducted to determine the effect of antiprolactin drug (Bromergon®) and Peppermint (Mentha piperita L.) on broodiness, laying performance and egg quality in indigenous hens. The effect of modulation of prolactin concentration on egg production, sequence length and inter sequence pauses were studied by analyzing the oviposition records. Total sixty indigenous laying hens (30-40 weeks of age), were assigned for treatment with peppermint solution and Bromergon®. Sixty laying hens were randomly divided into 4 groups (A, B, C and D) and each group remained 15 hens. Group A was kept for control, Group B was treated with bromocriptine (Bromergon® SANDOZ) orally @ 640 ?g per bird per day, Group C with 50% peppermint solution @ 10 g per bird orally and Group D was with peppermint and Bromergon® combined at previous dose. Over the course of trial, incremental dietary peppermint (Group C) significantly (p?0.05) increased egg production, body weight of treated indigenous hens than other groups. Egg shell percentage, thickness and haugh unit of hens fed diets supplemented with peppermint were greater than that of hens fed the control diet. However, peppermint supplementation did not influence other egg quality characteristics like albumen and yolk percentages and albumen height. The treated birds had comparatively longer sequences and fewer pauses. It is concluded that the physiological pauses occur during ovulatory sequences can be disrupted effectively using Bromergon® and peppermint. Prolactin levels modulated which may interfere with follicular recruitment and subsequent oviposition thereby improves egg laying potential of the indigenous hens.Asian J. Med. Biol. Res. December 2016, 2(4): 547-554

scholarly journals Effect of Selenium Sources on Laying Performance, Egg Quality Characteristics, Intestinal Morphology, Microbial Population and Digesta Volatile Fatty Acids in Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1681
Author(s):  
Aliyu Ibrahim Muhammad ◽  
Dalia Alla Mohamed ◽  
Loh Teck Chwen ◽  
Henny Akit ◽  
Anjas Asmara Samsudin
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Laying Hens ◽  
Egg Quality ◽  
Basal Diet ◽  
Egg Yolk ◽  
Quality Characteristics ◽  
Intestinal Morphology ◽  
Treatment Groups ◽  
Laying Performance

The use of toxic and less bioavailable inorganic selenium can now be supplemented with an alternative organic source from bacterial species in nutrition for human and animal benefit. This study investigated the effects of selenium sources on laying performance, egg quality characteristics, intestinal morphology, caecum microbial population, and digesta volatile fatty acids in laying hens. One hundred and forty-four Lohman Brown Classic laying hens, at 23 weeks of age, were divided into four experimental groups (36 hens in each), differing in form of Se supplementation: no Se supplementation (Con), 0.3 mg/kg of inorganic Se in the form of sodium selenite (Na2SeO3), 0.3 mg/kg of organic Se from selenium yeast (Se-Yeast), and 0.3 mg/kg of organic Se from Stenotrophomonas maltophilia (bacterial organic Se, ADS18). The results showed that different dietary Se sources significantly affected laying rate, average egg weight, daily egg mass, feed conversion ratio (FCR), and live bodyweight (LBW) (p < 0.05). However, average daily feed intake and shell-less and broken eggs were unaffected (p > 0.05) among the treatment groups. The findings revealed that selenium sources had no (p > 0.05) effect on egg quality (external and internal) parameters. However, eggshell breaking strength and Haugh unit were significantly (p < 0.05) improved with organic (ADS18 or Se-yeast) Se-fed hens compared to the control group. In addition, egg yolk and breast tissue Se concentrations were higher (p < 0.05) in the dietary Se supplemented group compared to the control. Intestinal histomorphology revealed that hens fed ADS18 or Se-Yeast groups had significantly (p < 0.05) higher villi height in the duodenum and jejunum compared to those fed Na2SeO3 or a basal diet. However, when compared to organic Se fed (ADS18 or Se-Yeast) hens, the ileum villus height was higher (p < 0.05) in the basal diet group; with the lowest in the SS among the treatment groups. A significant increase (p < 0.05) of Lactobacilli spp. and Bifidobacteria spp., and a decrease of Escherichia coli and Salmonella spp. population were observed in the organic (ADS18 or Se-yeast) compared to inorganic supplemented and control hens. The individual digesta volatile fatty acid (VFA) was significantly different, but with no total VFA differences. Thus, bacterial selenoprotein or Se-yeast improved the performance index, egg quality characteristics, egg yolk and tissue Se contents, and intestinal villus height in laying hens. Moreover, caecum beneficial microbes increased with a decrease in the harmful microbe population and affected individual cecal volatile fatty acids without affecting the total VFA of the laying hens digesta.

scholarly journals Effect of Dietary Supplementation of Fermented Pine Needle Extract on Productive Performance, Egg Quality, and Serum Lipid Parameters in Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1475
Author(s):  
Damini Kothari ◽  
Jong-Seok Oh ◽  
Ju-Hee Kim ◽  
Woo-Do Lee ◽  
Soo-Ki Kim
Keyword(s):  
Serum Lipid ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Egg Yolk ◽  
Egg Mass ◽  
Productive Performance ◽  
Laying Performance

This study aimed to investigate the supplemental effects of fermented pine (Pinus densiflora) needle extract (FPNE) in laying hen diets on productive performance, egg quality, and serum lipid metabolites. A total of 108 40-week-old Hy-line brown laying hens were randomly assigned to one of the three dietary treatment groups: (1) basal diet + 0 mL FPNE/kg diet (CON), (2) basal diet + 2.5 mL FPNE/kg diet (T1), or (3) basal diet + 5 mL FPNE/kg diet (T2) for 6 weeks. Each group consisted of four replicates of nine hens each. Feed and water provided ad libitum. Results showed that dietary supplementation of FPNE increased egg production percentage (linear, p < 0.01 and quadratic, p < 0.05), egg mass (linear, p < 0.05), and feed intake (linear, p < 0.05) during the entire experimental period. In addition, dietary inclusion of FPNE significantly increased the eggshell color (linear, p < 0.01), egg yolk color (quadratic, p < 0.01), and eggshell breaking strength (linear, p < 0.05 and quadratic, p < 0.05) while the Haugh unit decreased (quadratic, p < 0.05). However, serum lipid profile did not differ among the dietary treatments (p > 0.05). Notably, antioxidant activity of egg yolk was improved by significantly decreasing the malondialdehyde content in egg yolks after 6 weeks of storage (linear, p < 0.001 and quadratic, p < 0.05). In summary, dietary inclusion of FPNE could improve laying performance and the antioxidant capacity of eggs.

Effect of Spirulina-Chinese herbal medicine on quality of eggs and serum biochemical indexes of egg-laying hens

2017 ◽  
Author(s):  
Liu Peipei ◽  
Zang Sumin
Keyword(s):  
Herbal Medicine ◽  
Chinese Herbal Medicine ◽  
Laying Hens ◽  
Egg Yolk ◽  
Egg Laying ◽  
Control Group ◽  
Egg Weight ◽  
Traditional Chinese Herbal Medicine ◽  
Chinese Herbal ◽  
Laying Performance

This study used three-factor linear regression orthogonal design to examine the impacts of traditional Chinese herbal medicine on egg quality and egg-laying hens’ biochemical indexes. 495 and 210d Hy-Line gray commercial egg-laying hens were selected and spirulina powder was added to their diet at 5 g/kg, 10g/kg, 15g/kg in the diet, rchmannia glutnosa polysaccharides were added at 2.5g/kg, 3 g/kg, 3.5 g/kg, and Leonurus Japonicas was added at 0.7 g/kg, 0.9g/kg, 1.1 g/kg. The hens were randomly allocated to a control group and ten test groups, in order to study the herbs’ effects on laying performance and immunity parameters. The results showed that: (1)When spirulina-Chinese herbal medicine was added, the average egg weight, yolk color, and Hartz unit increased significantly.(2) When spirulina powder levels were increased, the egg yolk color and iron content significantly increased while the cholesterol and triglyceride levels were significantly lower (P>0.05). With the increase of rchmannia glutnosa polysaccharides extracts, eggshell strength increased significantly (P>0.01). Egg yolk color and eggshell strength increased significantly (P>0.05 and P>0.01, respectively) when Leonurus Japonicas increased. (3) Spirulina powder and rchmannia glutnosa polysaccharides extracts were significantly antagonistic to average egg weight and eggshell strength (P>0.01). Leonurus Japonicus and rchmannia glutnosa polysaccharides were significantly antagonistic to eggshell strength and cholesterol levels (P>0.05).

scholarly journals Keel bone fractures affect egg laying performance but not egg quality in laying hens housed in a commercial aviary system

2019 ◽  
Vol 98 (4) ◽  
pp. 1589-1600 ◽  
Author(s):  
Christina Rufener ◽  
Sarah Baur ◽  
Ariane Stratmann ◽  
Michael J Toscano
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Bone Fractures ◽  
Egg Laying ◽  
Laying Performance
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