Effects of Kaolin (Natural Ligneous Clay) Supplementation on Performance and Egg Quality in Laying Hens

Jo, Jong-Kwan; Yoon, Se-Young; Yun, Ku; Kwon, Il-Kyung; Chae, B. J.

doi:10.5187/jast.2011.53.2.133

Cited by 6 publications

(8 citation statements)

References 15 publications

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“…The percentage of egg laying was not influenced by the inclusion of kaolin (Table 2). These results contrasted with those reported by KIM et al (2011) which showed that using lower kaolin levels in the diets of 58-week-old laying hens (0%-0.6% of the additive), caused an increase in egg yield of 0.2%. The laying rate observed in this experiment related to the average laying advocated by the line management guide (HENDRIX GENETICS, 2016), regardless of the inclusion of kaolin.…”

Section: Resultscontrasting

confidence: 99%

Inclusion of kaolin in the diet of brown egg layers at the end of the production cycle

Reis

Quintero²,

Dilelis

et al. 2021

Cienc. Rural

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This study investigated the inclusion of kaolin levels in the diet of brown egg layers at the end of the production cycle. A completely randomized design involved the distribution of 288 brown egg layers into six treatments of eight replications, with six birds per replication. When the birds reached the age of 63 weeks, the feeding of the experimental diets began. Diets differed by the inclusion of increasing levels of kaolin: Control (no additive), and the inclusion of 1%, 2%, 3%, 4%, and 5% kaolin. The performance, egg quality, intestinal morphometry, and excreta moisture were evaluated. The inclusion of kaolin promoted improvement in the jejunum villus height, enabling less feed intake; however, there were no significant differences in egg quality. The excreta moisture decreased linearly as the kaolin level in the diet increased. The inclusion of 5% kaolin in the diet of brown egg layers at the end of the production cycle improved intestinal morphometry and the quality of excreta through a reduction of moisture.

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Section: Resultscontrasting

confidence: 99%

Inclusion of kaolin in the diet of brown egg layers at the end of the production cycle

Reis

Quintero²,

Dilelis

et al. 2021

Cienc. Rural

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“…According to Safaeikatouli et al (2012), the inclusion of clays in animal feed reduces the passage rate of digesta, improving digestibility, which causes birds to consume less feed to meet their nutritional requirements. Similar to the present study, Kim et al (2011) also observed lower feed intake after inclusion of clay (kaolin) in the feed of laying hens.…”

Section: Discussionsupporting

confidence: 91%

“…Egg weight, Haugh unit, yolk index, percentage of albumin and shell, and eggshell thickness were kept at good quality regardless of the level of kaolin used (p>0.05). Similar to that observed in this study, Kim et al (2011) also found no significant difference for variables of internal quality and eggshells produced by laying hens fed several levels of clay (kaolin). Homer (1980) reported reduced water content in the excreta through an experiment with laying hens fed diets containing 2.5 and 5% bentonite compared to a control diet without clay.…”

Section: Discussionsupporting

confidence: 90%

“…Feed conversion followed the behavior observed in this study for feed intake and egg production. Similar to that seen in this study, Kim et al (2011) when evaluating the addition of clay (kaolin) in the feed of laying hens also observed a significant improvement in feed conversion compared to the control group (without clay). Viability was also influenced (p<0.05) by the inclusion of increasing levels of kaolin in the diet.…”

Section: Discussionsupporting

confidence: 88%

“…Moghaddam et al (2008) observed an improvement in performance and egg quality after inclusion of clay (Zeolite) in the diet of laying hens. Kim et al (2011) evaluating the effect of kaolin on egg quality and performance of laying hens did not detect improvements in egg quality; however, a significant reduction in feed intake and improvement in feed conversion were observed. Valladares et al (2014) evaluated the effects of different kaolin levels in the feed of broilers, observing better quality of the litter.…”

Section: Introductionmentioning

confidence: 78%

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Inclusion of kaolin in the feed of Japanese quails during the production phase

Santos-de-Souza

Calixto

Jorge-de-Lemos

et al. 2019

Rev Colom Cienc Pecua

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Background: Kaolin may improve quail performance by maintaining intestinal integrity and improving nutrient absorption. Objective: To evaluate the overall performance, egg quality, moisture, nitrogen and calcium content in the excreta, intestinal morphology and financial analysis of kaolin in Japanese quail feed during the production phase. Methods: A total of 192 Japanese quails, distributed in a completely randomized design with four treatments and six repetitions with eight birds each, were used. Kaolin levels added to the diet were 0, 1.5, 3.0, and 4.5%. Results: Kaolin reduced feed consumption. Additionally, egg production, feed conversion and viability increased. Moisture, nitrogen and calcium in the excreta decreased. Height and width of the intestinal villi increased with increasing levels of kaolin in the diet. Kaolin had no effect on egg quality. Inclusion level of 1.5% kaolin allowed for greater economic gains. Conclusion: Kaolin improved performance, intestinal morphology, and reduced the moisture, nitrogen and calcium contents in the excreta. Egg quality remained unchanged with the addition of kaolin, and the best economic response resulted with the addition 1.5% kaolin.

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Impact of kaolin on growth performance, haematological and some serum biochemical indices of broiler chickens

Ezenwosu,

Ogala,

Ezeugwu

2023

Appl. Vet. Res.

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The aim of this study was to investigate the impact of kaolin on the growth performance, haematological indices and some serum biochemical indices of broiler chickens. A total of 261 ‘Anak strain’ mix sexed of day-old chicks of broiler chickens at two weeks of age were allotted to 4 dietary treatments in a completely randomized experimental design with 6 replicates of 9 birds each. Dietary treatments at both the starter phase at 14 days old up to 28 days old age and treatment at the finisher phase at 28 days old up to 56 days old age included:0 g/kg ration, 5 g/kg ration, 10 g/kg ration and 15 g/kg ration. The results of the weekly feed intake, weight gain and feed conversion ratio showed that weight gain, feed intake and feed conversion ratio improved (P < 0.05) in favor of the treatment groups. In overall and daily performance of the birds, feed intake and weight gain were higher (P < 0.05) in the treatment group than in the control group. However, serum biochemical and haematological indices investigated among the treatments were not significant (P > 0.05). It was recommended that up to 5-15% kaolin can be safely included in rations for improved performance in broiler production.

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Effects of Kaolin (Natural Ligneous Clay) Supplementation on Performance and Egg Quality in Laying Hens

Cited by 6 publications

References 15 publications

Inclusion of kaolin in the diet of brown egg layers at the end of the production cycle

Inclusion of kaolin in the diet of brown egg layers at the end of the production cycle

Inclusion of kaolin in the feed of Japanese quails during the production phase

Impact of kaolin on growth performance, haematological and some serum biochemical indices of broiler chickens

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