Alternative procedure for determining lysine maintenance requirement in poultry
ABSTRACT The objective with this study was to determine the lysine maintenance requirements (LMR) of male and female broilers as animal models. A total of 252 birds were used for nitrogen balance trials during three periods (I: 6-21, II: 22-37, and III: 38-53 days). Six lysine levels were used (2.76...
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Sociedade Brasileira de Zootecnia
2020-05-01
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| Series: | Revista Brasileira de Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100602&tlng=en |
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| author | Juliano Cesar de Paula Dorigam Edney Pereira da Silva Nilva Kazue Sakomura Nelson José Peruzzi Michele Bernardino de Lima João Batista Kochenborger Fernandes |
| author_facet | Juliano Cesar de Paula Dorigam Edney Pereira da Silva Nilva Kazue Sakomura Nelson José Peruzzi Michele Bernardino de Lima João Batista Kochenborger Fernandes |
| author_sort | Juliano Cesar de Paula Dorigam |
| collection | DOAJ |
| description | ABSTRACT The objective with this study was to determine the lysine maintenance requirements (LMR) of male and female broilers as animal models. A total of 252 birds were used for nitrogen balance trials during three periods (I: 6-21, II: 22-37, and III: 38-53 days). Six lysine levels were used (2.76, 5.88, 8.99, 12.1, 15.2, and 18.3 g kg−1) with six replications. A control group also included, totalizing seven treatments for males and females for each assay. The experimental period was 15 days. The response variables included nitrogen intake (NI) and excretion (NEX), and their difference was assumed to be deposited as nitrogen. An exponential regression between NEX and lysine intake (LI) was fitted, and LMR was estimated when LI = 0. The daily values for LMR were 9.29, 33.4, and 40.2 mg BW0.67 kg−1 for males and 9.36, 30.0, and 39.4 mg BW0.67 kg−1 for females. The final value for both sexes were 10.1 (period I), 31.5 (period II), and 39.8 mg BW0.67 kg−1 (period III). Expressed as body protein weight at maturity (BPm), the LMR were 172 and 148 (period I), 216 and 207 (period II), and 189 and 180 mg BPm0.73 kg−1 (period III) for males and females, respectively. The results provided ranges of LMR values recommended in previous studies, validating this procedure. The procedure to estimate the requirements presented here provides new insights into the model of amino acid requirement estimations. |
| first_indexed | 2024-12-20T16:16:46Z |
| format | Article |
| id | doaj.art-aa8deeea3b324b318e8ae2395c3cb93a |
| institution | Directory Open Access Journal |
| issn | 1806-9290 |
| language | English |
| last_indexed | 2024-12-20T16:16:46Z |
| publishDate | 2020-05-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-aa8deeea3b324b318e8ae2395c3cb93a2022-12-21T19:33:47ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-92902020-05-014910.37496/rbz4920180183Alternative procedure for determining lysine maintenance requirement in poultryJuliano Cesar de Paula Dorigamhttps://orcid.org/0000-0002-6793-3636Edney Pereira da Silvahttps://orcid.org/0000-0001-8053-7681Nilva Kazue Sakomurahttps://orcid.org/0000-0001-5707-4113Nelson José Peruzzihttps://orcid.org/0000-0001-9061-5751Michele Bernardino de Limahttps://orcid.org/0000-0002-9002-3606João Batista Kochenborger Fernandeshttps://orcid.org/0000-0003-3886-8561ABSTRACT The objective with this study was to determine the lysine maintenance requirements (LMR) of male and female broilers as animal models. A total of 252 birds were used for nitrogen balance trials during three periods (I: 6-21, II: 22-37, and III: 38-53 days). Six lysine levels were used (2.76, 5.88, 8.99, 12.1, 15.2, and 18.3 g kg−1) with six replications. A control group also included, totalizing seven treatments for males and females for each assay. The experimental period was 15 days. The response variables included nitrogen intake (NI) and excretion (NEX), and their difference was assumed to be deposited as nitrogen. An exponential regression between NEX and lysine intake (LI) was fitted, and LMR was estimated when LI = 0. The daily values for LMR were 9.29, 33.4, and 40.2 mg BW0.67 kg−1 for males and 9.36, 30.0, and 39.4 mg BW0.67 kg−1 for females. The final value for both sexes were 10.1 (period I), 31.5 (period II), and 39.8 mg BW0.67 kg−1 (period III). Expressed as body protein weight at maturity (BPm), the LMR were 172 and 148 (period I), 216 and 207 (period II), and 189 and 180 mg BPm0.73 kg−1 (period III) for males and females, respectively. The results provided ranges of LMR values recommended in previous studies, validating this procedure. The procedure to estimate the requirements presented here provides new insights into the model of amino acid requirement estimations.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100602&tlng=enamino acidexponential modellikelihood ratiomaintenancenitrogen balance |
| spellingShingle | Juliano Cesar de Paula Dorigam Edney Pereira da Silva Nilva Kazue Sakomura Nelson José Peruzzi Michele Bernardino de Lima João Batista Kochenborger Fernandes Alternative procedure for determining lysine maintenance requirement in poultry Revista Brasileira de Zootecnia amino acid exponential model likelihood ratio maintenance nitrogen balance |
| title | Alternative procedure for determining lysine maintenance requirement in poultry |
| title_full | Alternative procedure for determining lysine maintenance requirement in poultry |
| title_fullStr | Alternative procedure for determining lysine maintenance requirement in poultry |
| title_full_unstemmed | Alternative procedure for determining lysine maintenance requirement in poultry |
| title_short | Alternative procedure for determining lysine maintenance requirement in poultry |
| title_sort | alternative procedure for determining lysine maintenance requirement in poultry |
| topic | amino acid exponential model likelihood ratio maintenance nitrogen balance |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100602&tlng=en |
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