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 Title |
: Rate and Causes of Preweaning Mortality of Thai-native and Anglo-Nubian Cross-bred Kids |
 Author |
: S. CHOLDUMRONGKUL |
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Co-authors |
: S. KOCHAPAKDEE, S. SAITHANOO ,A. LAWPETCHARA and W. PRALOMKARN |
 School |
: Prince of Songkla University |
 Department |
: Small Ruminant Research and Development Centre |
 Source |
: Annual Research Abstracts 2002-2003 |
 Grant |
: Small Ruminant Research and Development Centre, Faculty of Natural Resources, Prince of Songkla University. |
 Knowledge Bank Category |
: Agriculture |
 Viewes |
: 507 |
 Abstract |
: native and Anglo-Nubian cross-bred kids raised at the Small Ruminant Research and Development Centre, Faculty of Natural Resources, Prince of Songkla University, were studied. Out of 1,660 kids born during the period of study (1993-2000), 313 died. Major causes of death were still-birth and still-born, weak-starvation complex, accident, helminthiasis, and infection. Genotype, birth weight, birth type, season and year of birth significantly (P<0.05) influenced the mortality rate (18.9%) of kids. Mortality rate for 75% Anglo-Nubian cross-bred kids (32.4%) was higher than those for other genotypes (14.5-20.1%). Mortality rate for kids born with a birth weight of less than 1 kg was the highest (62.2%), and mortality decreased as birth weight of kid increased. Kids from triple birth had the highest mortality rate (32.7%) followed by those from twin (19.3%) and single birth (9.8%). Mortality rates for kids born during the heavy rainy season (September-December) were greater (22.1%) than those for kids born during t dry season (17.8%) and light rainy season (15.0%). Mortality rates for kids born in different years varied, with the highest and lowest occurring in 1999 (37.0%) and 2000 (9.8%) respectively. The majority of deaths occurred during one month after kidding, with 51.1% and 22.7% occurring during 0-7 day and 8-30 day post-kidding respectively. |
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