Characterisation of the lactation curve of Gyr and Sardo Negro cattle
The objectives were to characterize the lactation curves (LC) of tropical Gyr and Sardo Negro (SN) cattle from Mexico for the design of breeding and management programs for these breeds. A total of 3561 records of 504 lactations and 3927 records of 449 lactations were used for Gyr and SN, respective...
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| Format: | Article |
| Language: | English |
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Kassel University Press
2023-07-01
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| Series: | Journal of Agriculture and Rural Development in the Tropics and Subtropics |
| Subjects: | |
| Online Access: | https://www.jarts.info/index.php/jarts/article/view/202306128206 |
| _version_ | 1797634942270701568 |
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| author | Joel Domínguez-Viveros Guadalupe Nelson Aguilar-Palma Luís Eduardo Juárez-Hernández Carlos Luna-Palomera Juan Fernando Saiz-Pineda Antonio Reyes-Cerón Cesar Villegas-Gutiérrez |
| author_facet | Joel Domínguez-Viveros Guadalupe Nelson Aguilar-Palma Luís Eduardo Juárez-Hernández Carlos Luna-Palomera Juan Fernando Saiz-Pineda Antonio Reyes-Cerón Cesar Villegas-Gutiérrez |
| author_sort | Joel Domínguez-Viveros |
| collection | DOAJ |
| description | The objectives were to characterize the lactation curves (LC) of tropical Gyr and Sardo Negro (SN) cattle from Mexico for the design of breeding and management programs for these breeds. A total of 3561 records of 504 lactations and 3927 records of 449 lactations were used for Gyr and SN, respectively. Three lactation lengths (LL) were evaluated, namely 240 (240d), 270 (270d), and 300 (300d) days, with five non-linear models (NLM): Wood, Wiltmink, Cobby, Brody, and Sikka. Milk production was obtained at the beginning (PI; kg), daily average (PMD; kg), maximum at peak (PMX; kg), days to reach maximum production (DP), and accumulated total (PT; kg). The selection of models was made based in the Akaike and Bayesian information criteria. The NLM explained at least 88% of the variability in the data. Brody model provided the best fit for 240d and 270d, and Sikka for 300d in SN; for Gyr, Wood model showed the best fit for 240d and 270d, while Wiltmink had the best fit for 300d. The means for PMD were 5.3 kg in SN and 10.2 kg in Gyr; for PMX the averages were 6.9 kg and 12.7 kg, respectively. The average of PT, within LL (240d, 270d, and 300d), was 1297 kg, 1418 kg, and 1552 kg for SN, and 2653 kg, 2930 kg, and 3202 kg for Gyr, respectively. The first third of the LC presented the highest contribution (%), with average values of 37.4 in Gyr and 39.5 in SN; the second and third periods, contributed (%) 33.5 and 29.1 in Gyr, and 33.0 and 27.5 in SN, respectively. The 240d LL, are the proposals for the design of management, feeding, and genetic improvement programs, they presented the best statistical adjustment in both breeds. |
| first_indexed | 2024-03-11T12:14:23Z |
| format | Article |
| id | doaj.art-0e8086996cea4c65a17ba40953faa43a |
| institution | Directory Open Access Journal |
| issn | 1612-9830 2363-6033 |
| language | English |
| last_indexed | 2024-03-11T12:14:23Z |
| publishDate | 2023-07-01 |
| publisher | Kassel University Press |
| record_format | Article |
| series | Journal of Agriculture and Rural Development in the Tropics and Subtropics |
| spelling | doaj.art-0e8086996cea4c65a17ba40953faa43a2023-11-07T10:09:02ZengKassel University PressJournal of Agriculture and Rural Development in the Tropics and Subtropics1612-98302363-60332023-07-01124193100https://doi.org/10.17170/kobra-202306128206Characterisation of the lactation curve of Gyr and Sardo Negro cattleJoel Domínguez-Viveros0Guadalupe Nelson Aguilar-Palma1Luís Eduardo Juárez-Hernández2Carlos Luna-Palomera3Juan Fernando Saiz-Pineda4Antonio Reyes-Cerón5Cesar Villegas-Gutiérrez6Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua MéxicoFacultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua MéxicoAsociación Mexicana de Criadores de Cebú Tampico, Tamaulipas. MéxicoDivisión Académica de Ciencias Agropecuarias. Universidad Juárez Autónoma de Tabasco MéxicoAsociación Mexicana de Criadores de Cebú Tampico, Tamaulipas. MéxicoAsociación Mexicana de Criadores de Cebú Tampico, Tamaulipas. MéxicoAsociación Mexicana de Criadores de Cebú Tampico, Tamaulipas. MéxicoThe objectives were to characterize the lactation curves (LC) of tropical Gyr and Sardo Negro (SN) cattle from Mexico for the design of breeding and management programs for these breeds. A total of 3561 records of 504 lactations and 3927 records of 449 lactations were used for Gyr and SN, respectively. Three lactation lengths (LL) were evaluated, namely 240 (240d), 270 (270d), and 300 (300d) days, with five non-linear models (NLM): Wood, Wiltmink, Cobby, Brody, and Sikka. Milk production was obtained at the beginning (PI; kg), daily average (PMD; kg), maximum at peak (PMX; kg), days to reach maximum production (DP), and accumulated total (PT; kg). The selection of models was made based in the Akaike and Bayesian information criteria. The NLM explained at least 88% of the variability in the data. Brody model provided the best fit for 240d and 270d, and Sikka for 300d in SN; for Gyr, Wood model showed the best fit for 240d and 270d, while Wiltmink had the best fit for 300d. The means for PMD were 5.3 kg in SN and 10.2 kg in Gyr; for PMX the averages were 6.9 kg and 12.7 kg, respectively. The average of PT, within LL (240d, 270d, and 300d), was 1297 kg, 1418 kg, and 1552 kg for SN, and 2653 kg, 2930 kg, and 3202 kg for Gyr, respectively. The first third of the LC presented the highest contribution (%), with average values of 37.4 in Gyr and 39.5 in SN; the second and third periods, contributed (%) 33.5 and 29.1 in Gyr, and 33.0 and 27.5 in SN, respectively. The 240d LL, are the proposals for the design of management, feeding, and genetic improvement programs, they presented the best statistical adjustment in both breeds.https://www.jarts.info/index.php/jarts/article/view/202306128206tropical livestockbos indicusmilk productionnonlinear modelspersistency |
| spellingShingle | Joel Domínguez-Viveros Guadalupe Nelson Aguilar-Palma Luís Eduardo Juárez-Hernández Carlos Luna-Palomera Juan Fernando Saiz-Pineda Antonio Reyes-Cerón Cesar Villegas-Gutiérrez Characterisation of the lactation curve of Gyr and Sardo Negro cattle Journal of Agriculture and Rural Development in the Tropics and Subtropics tropical livestock bos indicus milk production nonlinear models persistency |
| title | Characterisation of the lactation curve of Gyr and Sardo Negro cattle |
| title_full | Characterisation of the lactation curve of Gyr and Sardo Negro cattle |
| title_fullStr | Characterisation of the lactation curve of Gyr and Sardo Negro cattle |
| title_full_unstemmed | Characterisation of the lactation curve of Gyr and Sardo Negro cattle |
| title_short | Characterisation of the lactation curve of Gyr and Sardo Negro cattle |
| title_sort | characterisation of the lactation curve of gyr and sardo negro cattle |
| topic | tropical livestock bos indicus milk production nonlinear models persistency |
| url | https://www.jarts.info/index.php/jarts/article/view/202306128206 |
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