Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers
In order to estimate the crude protein (CP) equivalence value of Natuzyme-p (NP) enzyme by using regression response equations, two experiments were carried out using Ross (308) broiler chicks. Graded levels of dietary CP (while amino acids levels were kept constant) and NP enzyme were used to deriv...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Fundação APINCO de Ciência e Tecnologia Avícolas
2012-12-01
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| Series: | Brazilian Journal of Poultry Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400010 |
| _version_ | 1818928238018166784 |
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| author | A Malakzadegan M Zaghari S Khalaji M Shivazad |
| author_facet | A Malakzadegan M Zaghari S Khalaji M Shivazad |
| author_sort | A Malakzadegan |
| collection | DOAJ |
| description | In order to estimate the crude protein (CP) equivalence value of Natuzyme-p (NP) enzyme by using regression response equations, two experiments were carried out using Ross (308) broiler chicks. Graded levels of dietary CP (while amino acids levels were kept constant) and NP enzyme were used to derive the regression equation in the first experiment. Four levels of dietary CP and NP enzyme were fed to 160 feather-sexed male broiler chicks during the starter (0-28 d of age) and grower (28-42 d of age) period. Each diet was offered to four replicates of five chicks in a completely randomized design. Results obtained in experiment one failed to fit a regression equation between BW, dietary CP levels and NP enzyme. In experiment two, graded levels of CP changed along with the levels of lysine (Lys), Met+Cys and threonine (Thr). Regression equations between BW and dietary CP and NP enzyme were derived. Nonlinear and linear equations were generated for enzyme and CP. Based on an assessment of r² and P value, nonlinear equations were used to determine enzyme equivalence. The derived regression equations of body weight for CP were set to be equal with those obtained for NP and were solved; enzyme equivalence value for CP was calculated by subtracting the obtained value from CP content of basal diet. Crude protein equivalence value of NP at 28 and 42 d of age was estimated to be 0.96 and 0.38 %, respectively. |
| first_indexed | 2024-12-20T03:25:43Z |
| format | Article |
| id | doaj.art-a30acccb3ea24eedbeba9ea339a37f70 |
| institution | Directory Open Access Journal |
| issn | 1516-635X 1806-9061 |
| language | English |
| last_indexed | 2024-12-20T03:25:43Z |
| publishDate | 2012-12-01 |
| publisher | Fundação APINCO de Ciência e Tecnologia Avícolas |
| record_format | Article |
| series | Brazilian Journal of Poultry Science |
| spelling | doaj.art-a30acccb3ea24eedbeba9ea339a37f702022-12-21T19:55:06ZengFundação APINCO de Ciência e Tecnologia AvícolasBrazilian Journal of Poultry Science1516-635X1806-90612012-12-0114429730310.1590/S1516-635X2012000400010Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilersA MalakzadeganM ZaghariS KhalajiM ShivazadIn order to estimate the crude protein (CP) equivalence value of Natuzyme-p (NP) enzyme by using regression response equations, two experiments were carried out using Ross (308) broiler chicks. Graded levels of dietary CP (while amino acids levels were kept constant) and NP enzyme were used to derive the regression equation in the first experiment. Four levels of dietary CP and NP enzyme were fed to 160 feather-sexed male broiler chicks during the starter (0-28 d of age) and grower (28-42 d of age) period. Each diet was offered to four replicates of five chicks in a completely randomized design. Results obtained in experiment one failed to fit a regression equation between BW, dietary CP levels and NP enzyme. In experiment two, graded levels of CP changed along with the levels of lysine (Lys), Met+Cys and threonine (Thr). Regression equations between BW and dietary CP and NP enzyme were derived. Nonlinear and linear equations were generated for enzyme and CP. Based on an assessment of r² and P value, nonlinear equations were used to determine enzyme equivalence. The derived regression equations of body weight for CP were set to be equal with those obtained for NP and were solved; enzyme equivalence value for CP was calculated by subtracting the obtained value from CP content of basal diet. Crude protein equivalence value of NP at 28 and 42 d of age was estimated to be 0.96 and 0.38 %, respectively.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400010Multi enzymey equivalent valuecrudebroiler |
| spellingShingle | A Malakzadegan M Zaghari S Khalaji M Shivazad Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers Brazilian Journal of Poultry Science Multi enzyme y equivalent value crude broiler |
| title | Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers |
| title_full | Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers |
| title_fullStr | Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers |
| title_full_unstemmed | Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers |
| title_short | Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers |
| title_sort | crude protein equivalence value of a multi enzyme product for 28 and 42 day old broilers |
| topic | Multi enzyme y equivalent value crude broiler |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400010 |
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