Kid survival analyses of Rayeni Cashmere goat in nimadic system | ||
| علوم دامی | ||
| Volume 35, Issue 137, March 2023, Pages 31-44 PDF (2.31 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/asj.2022.354700.2157 | ||
| Authors | ||
| Najmeh Kargar* 1; Mohammad Hossein Banabazi2; Elham Rezvannejad3 | ||
| 1Animal Science Research Department, Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Kerman, Iran | ||
| 2Assistant Professor, Department of Biotechnology, Animal Science Research Institute of Iran (ASRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran | ||
| 3Department of Biotechnology, Institute of Sciences and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran | ||
| Abstract | ||
| Survival records and pedigree information from Rayeni kids born between 1993 and 2009 from breeding station of Rayeni Cashmere goat, located in the Baft city, were used. Also, by completing questionnaire from breeding station of Rayeni Chashmere goat and flock nongovernmental, in Kerman province environmental factors affecting survival and survival rate were obtained. 11 herds with geographical diversity and different herd sizes in Kerman province were selected. The highest and lowest percentages of kid removal were related to fattening surplus (54.2%) and defective removal (0.4%), respectively. Death due to disease after fattening surplus was the most common cause of kid removal (22.3%). Survival rate in these herds was 89.94 percent. according to the results overall mean of lifetime cumulative was 310.3 days. The effect of fixed factors year and month of birth, sex of kid and kid’s birth weight as quadratic were significant. The estimates of heritability in logarithmic scale were low to medium (0.14 to 0.40), original scale were medium to high (0.25 to 0.70) and effective heritability were medium (0.23 to 0.61). Since the estimated genetic parameters for survival of goats are moderate, to improve the survival of goats from birth to one year of age and increase the economic profit of the farmer, while improving nutritional and managerial conditions, genetic selection within the breed can be considered. | ||
| Keywords | ||
| Goat; Weibull function; Survival rate; Genetic and environmental factors | ||
| References | ||
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