Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management
The effect of measure number of milk production (MP) on the estimation of parameters in typical and extended lactations curve parameters of local goats was evaluated. This study was conducted with 14 producers in 5 communities of the Comarca Lagunera, State of Coahuila, México. MP was measured mon...
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Indian Council of Agricultural Research
2020-09-01
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| Series: | Indian Journal of Animal Sciences |
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| Online Access: | https://epubs.icar.org.in/index.php/IJAnS/article/view/104224 |
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| author | GLAFIRO TORRES-HERNÁNDEZ JORGE A. MALDONADO-JÁQUEZ HOMERO SALINAS-GONZÁLEZ LORENZO DANILO GRANADOS-RIVERA FRANCISCO J. PASTOR-LÓPEZ HUMBERTO VAQUERA-HUERTA YURIDIA BAUTISTA-MARTÍNEZ |
| author_facet | GLAFIRO TORRES-HERNÁNDEZ JORGE A. MALDONADO-JÁQUEZ HOMERO SALINAS-GONZÁLEZ LORENZO DANILO GRANADOS-RIVERA FRANCISCO J. PASTOR-LÓPEZ HUMBERTO VAQUERA-HUERTA YURIDIA BAUTISTA-MARTÍNEZ |
| author_sort | GLAFIRO TORRES-HERNÁNDEZ |
| collection | DOAJ |
| description |
The effect of measure number of milk production (MP) on the estimation of parameters in typical and extended lactations curve parameters of local goats was evaluated. This study was conducted with 14 producers in 5 communities of the Comarca Lagunera, State of Coahuila, México. MP was measured monthly by hand-milking during 4 years. Data analyzed included 12,097 observations belonging to 2,229 lactations from 1,125 local goats. The Wood model was utilized to characterize the lactation curve and its parameters (a, b, and c). Two groups were formed, G1 (typical lactation with 3-7 milk measures), and G2 (extended lactations with 8-10 milk measures). The criterion utilized to determine the adequate number of MP measures during lactation was the standard error of the estimate. The best fit in the estimation of the curve parameters was obtained in G2. Factors affecting the curve parameters were also evaluated utilizing the MIXED procedure of SAS. Community, year, and parity number influenced all the parameters in both groups. Flock within community influenced b and c in G1. Season of parity influenced c in G2. It is concluded that a higher measure number of MP in an extended lactation helps in better estimation of lactation curve parameters.
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| first_indexed | 2024-04-10T07:47:35Z |
| format | Article |
| id | doaj.art-5acec6ec22234c2e82fb165edc7c9566 |
| institution | Directory Open Access Journal |
| issn | 0367-8318 2394-3327 |
| language | English |
| last_indexed | 2024-04-10T07:47:35Z |
| publishDate | 2020-09-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | Indian Journal of Animal Sciences |
| spelling | doaj.art-5acec6ec22234c2e82fb165edc7c95662023-02-23T10:24:27ZengIndian Council of Agricultural ResearchIndian Journal of Animal Sciences0367-83182394-33272020-09-0190410.56093/ijans.v90i4.104224Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing managementGLAFIRO TORRES-HERNÁNDEZ0JORGE A. MALDONADO-JÁQUEZ1HOMERO SALINAS-GONZÁLEZ2LORENZO DANILO GRANADOS-RIVERA3FRANCISCO J. PASTOR-LÓPEZ4HUMBERTO VAQUERA-HUERTA5YURIDIA BAUTISTA-MARTÍNEZ6Campo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 MéxicoCampo Experimental La Laguna-INIFAP, Matamoros, Coahuila 27440 México The effect of measure number of milk production (MP) on the estimation of parameters in typical and extended lactations curve parameters of local goats was evaluated. This study was conducted with 14 producers in 5 communities of the Comarca Lagunera, State of Coahuila, México. MP was measured monthly by hand-milking during 4 years. Data analyzed included 12,097 observations belonging to 2,229 lactations from 1,125 local goats. The Wood model was utilized to characterize the lactation curve and its parameters (a, b, and c). Two groups were formed, G1 (typical lactation with 3-7 milk measures), and G2 (extended lactations with 8-10 milk measures). The criterion utilized to determine the adequate number of MP measures during lactation was the standard error of the estimate. The best fit in the estimation of the curve parameters was obtained in G2. Factors affecting the curve parameters were also evaluated utilizing the MIXED procedure of SAS. Community, year, and parity number influenced all the parameters in both groups. Flock within community influenced b and c in G1. Season of parity influenced c in G2. It is concluded that a higher measure number of MP in an extended lactation helps in better estimation of lactation curve parameters. https://epubs.icar.org.in/index.php/IJAnS/article/view/104224Arid zonesGoat milkPrecisionWood model |
| spellingShingle | GLAFIRO TORRES-HERNÁNDEZ JORGE A. MALDONADO-JÁQUEZ HOMERO SALINAS-GONZÁLEZ LORENZO DANILO GRANADOS-RIVERA FRANCISCO J. PASTOR-LÓPEZ HUMBERTO VAQUERA-HUERTA YURIDIA BAUTISTA-MARTÍNEZ Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management Indian Journal of Animal Sciences Arid zones Goat milk Precision Wood model |
| title | Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| title_full | Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| title_fullStr | Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| title_full_unstemmed | Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| title_short | Influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| title_sort | influence of milk production records on the estimation of typical and extended curve lactation parameters in local goats under grazing management |
| topic | Arid zones Goat milk Precision Wood model |
| url | https://epubs.icar.org.in/index.php/IJAnS/article/view/104224 |
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