| Registro completo |
| Provedor de dados: |
Animal Sciences
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| País: |
Brazil
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| Título: |
Calcium in pre-laying and laying rations on the performance and quality of laying hens’ eggshell - doi: 10.4025/actascianimsci.v35i2.16555
Calcium in pre-laying and laying rations on the performance and quality of laying hens’ eggshell - doi: 10.4025/actascianimsci.v35i2.16555
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| Autores: |
Rodrigues, Eliana Aparecida; Instituto Federal do Triangulo Mineiro
Oliveira, Maria Cristina de; Universidade de Rio Verde
Cancherini, Luciana Cardoso; Universidade do Estado de Mato Grosso
Duarte, Karina Ferreira; Universidade Estadual Paulista “Júlio de Mesquita Filho”
Santana, Luis Fernando; Instituto Federal do Triangulo Mineiro
Junqueira, Otto Mack; Universidade Estadual Paulista “Júlio de Mesquita Filho
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| Data: |
2012-12-03
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| Ano: |
2012
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| Palavras-chave: |
5.04.00.00-2 e 5.04.03.00-1 egg mass
Egg production
Eggshell quality
Feed intake
Pullets egg mass
Egg production
Eggshell quality
Feed intake
Pullets
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| Resumo: |
The experiment evaluated the effect of different calcium (Ca) levels in pre-laying and laying diets on the performance and egg quality of laying hens. Two hundred and fifty-six 16-week-old Brown Hisex pullets were housed in a conventional shed. The experiment had a completely randomized design with 4 x 2 factorial arrangement (four calcium levels - 0.8, 1.3, 1.8 and 2.3% in pre-laying phase; two calcium levels - 2.5 and 3.5% in laying phase), totaling eight treatments with four repetitions of eight birds per experimental unit. The experiment started with 16-week-old hens receiving pre-laying diets provided until they were 18 weeks old. At this period, the laying diets started. Four 28-day cycles were evaluated for the following variables: production and egg weight, feed intake, feed conversion, mass of eggs and eggshell quality. Results show that a good performance was obtained with 0.8% calcium level in the pre-laying phase, whereas in the laying phase the 3.5% calcium level provided greater weight egg and better eggshell quality.
The experiment evaluated the effect of different calcium (Ca) levels in pre-laying and laying diets on the performance and egg quality of laying hens. Two hundred and fifty-six 16-week-old Brown Hisex pullets were housed in a conventional shed. The experiment had a completely randomized design with 4 x 2 factorial arrangement (four calcium levels - 0.8, 1.3, 1.8 and 2.3% in pre-laying phase; two calcium levels - 2.5 and 3.5% in laying phase), totaling eight treatments with four repetitions of eight birds per experimental unit. The experiment started with 16-week-old hens receiving pre-laying diets provided until they were 18 weeks old. At this period, the laying diets started. Four 28-day cycles were evaluated for the following variables: production and egg weight, feed intake, feed conversion, mass of eggs and eggshell quality. Results show that a good performance was obtained with 0.8% calcium level in the pre-laying phase, whereas in the laying phase the 3.5% calcium level provided greater weight egg and better eggshell quality.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Português
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16555
10.4025/actascianimsci.v35i2.16555
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| Editor: |
Editora da Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16555/pdf
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16555/pdf_1
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Animal Sciences; v. 35, n. 2 (2013); 153-157
Acta Scientiarum. Animal Sciences; v. 35, n. 2 (2013); 153-157
1807-8672
1806-2636
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Animal Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Animal Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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