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Details van artikel 27 van 62 gevonden artikelen
| Titel: |
Genetic and Phenotypic Relationship Between Age at First Calving and Some Lifetime Traits in Nili-ravi Buffaloes |
| Auteur: |
Afzal Ali Zaheer Ahmad Ghulam Mohiuddin Khalid Javed |
| Verschenen in: |
Pakistan journal of biological sciences |
| Paginering: | Jaargang 2 (1999) nr. 1 pagina's 211-213 |
| Jaar: |
1999 |
| Inhoud: |
Pedigree and performance of 878 Nili-Ravi buffaloes progeny of 38 sires maintained for 47 years were recorded at Livestock Production Institute, Bahadurnagar, Okara, Pakistan. The phenotypic correlations of age at first calving with lifetime milk yield, productive life, herd life and coefficient of reproductive ability were negative and significant. However, the phenotypic correlation (0.03) between age at first calving and longevity was non-significant. The genetic correlations of age at first calving with lifetime milk production, productive life, herd life, longevity and the coefficient of reproductive ability were -0.52, -0.41, -0.44, -0.11 and -0.60, respectively. These negative and significant genetic correlations indicated that reduction in age at first calving in buffaloes would help to improve lifetime milk yield, longevity and reproductive ability as a correlated response. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 27 van 62 gevonden artikelen
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