Heritability and variance components estimates for growth traits in Saudi Ardi goat and Damascus goat and their crosses
| Autor: | MA Kamal EL–den, KM Mohammed, AY Dahmoush |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Genotype
040301 veterinary sciences Restricted maximum likelihood Heterosis Birth weight lcsh:Medicine Plant Science Biology Crossbreed 0403 veterinary science Heritability Animal science Growth rates Weaning General Veterinary lcsh:R 0402 animal and dairy science Obstetrics and Gynecology 04 agricultural and veterinary sciences 040201 dairy & animal science Breed Phenotype Reproductive Medicine Goat Variance components Animal Science and Zoology |
| Zdroj: | Asian Pacific Journal of Reproduction, Vol 7, Iss 1, Pp 39-46 (2018) |
| ISSN: | 2305-0519 2305-0500 |
| Popis: | Objective: To study the genetic and non-genetic factors and their interactions affecting growth rate and body weights at birth, weaning and at 6 months of age in Saudi Ardi, Damascus goats and their crosses. Methods: Crossbreeding program between Saudi Ardi(A) goats with Damascus(D) was carried out to improve the meat productivity of Ardi goats through crossbreeding. The pedigree records of the body weights were obtained from 754 kids (397 males and 357 females) produced from 46 Sires and 279 Dams. Birth weight, weaning weigh and 6 months weight as well as average daily gain during different growth stages from birth to weaning (D1), weaning to 6 months (D2) and from birth to 6 months of age (D3) were recorded during winter/autumn and summer/spring. Data were classified according to breed, generation, sex, season, year, and type of birth. Data were analyzed using GLM procedure for the least-squares means of the fixed factors. Heritability and genetic parameters were estimated with derivative-free restricted maximum likelihood procedures using the MTDFREML program. Results: The percentages of variations were moderate for body weights and high for daily gains. Genetic groups had a highly significant (P |
| Databáze: | OpenAIRE |
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