Genetic and environmental effects on parturition and lactation intervals in water buffaloes from Brazil
| Autor: | A. de Amorim Ramos, P.R. Antunes de Mello Affonso, C.H. Mendes Malhado, P.L. Souza Carneiro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Italian Journal of Animal Science, Vol 6, Iss 2s, Pp 385-388 (2010) |
| Druh dokumentu: | article |
| ISSN: | 1594-4077 1828-051X |
| DOI: | 10.4081/ijas.2007.s2.385 |
| Popis: | Genetic and environmental effects on parturition interval (PI) and duration of lactation (DL) were evaluated in 107 Jafarabadi, 98 Mediterranean, 1027 Murrah and 624 crossbred buffalo females (n=1856), based on data from the Buffalo Genetic Improvement Program–PROMEBUL from 1980 to 2003. The statistical model included effects of herd, parturition year and month, calf’s sex, parturition order and genetic group, composing 11, 34, 12, 2, 12 and 4 classes, respectively. A significant effect over PI was observed (P |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|