Risk factors for lamb mortality on UK sheep farms

被引:103
作者
Binns, SH [1 ]
Cox, IJ [1 ]
Rizvi, S [1 ]
Green, LE [1 ]
机构
[1] Univ Bristol, Dept Vet Clin Sci, Bristol BS40 5DU, Avon, England
基金
英国惠康基金;
关键词
lamb; mortality; risk factors; incidence risk;
D O I
10.1016/S0167-5877(01)00255-0
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
Data on neonatal-lamb mortality and flock history were recorded by veterinary students working on 108 sheep farms in the UK in Spring 1997. The mean reported mortality incidence risk was 10.0% (median 9%; inter-quartile range 5.9-12.3%). The outcomes were incidence risks of stillbirth, perinatal (within 24 h of birth) mortality and postnatal (>24 h after birth) mortality. Exposures were screened for univariable associations with mortality risk. Logistic binomial multiple regressions adjusted for confounding, with farm as a random effect. This study has raised hypotheses for management factors associated with lamb mortality that warrant further study. Intensive rearing systems appear to be associated with increased perinatal and postnatal mortality, although housing ewes at lambing was associated with a decreased risk of stillbirth. High perinatal mortality also was associated with poor mothering-pen hygiene. flocks that foster more lambs, and failure to provide appropriate nursing for sick lambs. Larger flocks, poor ewe condition at breeding, and flocks with higher ewe-replacement rates were associated with higher postnatal mortality. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:287 / 303
页数:17
相关论文
共 29 条
[1]   FOSTERING IN SHEEP .1. FACILITATION BY USE OF TEXTILE LAMB COATS [J].
ALEXANDER, G ;
STEVENS, D ;
BRADLEY, LR .
APPLIED ANIMAL BEHAVIOUR SCIENCE, 1985, 14 (04) :315-334
[2]   INFLUENCE OF PASSIVELY ACQUIRED COLOSTRAL IMMUNITY ON NEONATAL LAMB MORTALITY IN ETHIOPIAN HIGHLAND SHEEP [J].
BEKELE, T ;
OTESILE, EB ;
KASALI, OB .
SMALL RUMINANT RESEARCH, 1992, 9 (03) :209-215
[3]   A DESCRIPTIVE EPIDEMIOLOGIC-STUDY OF COCCIDIOSIS IN EARLY LAMBING HOUSED FLOCKS [J].
BERRIATUA, E ;
GREEN, LE ;
MORGAN, KL .
VETERINARY PARASITOLOGY, 1994, 54 (04) :337-351
[4]   LAMB MORTALITY IN MEKNES PROVINCE (MOROCCO) [J].
CHAARANI, B ;
ROBINSON, RA ;
JOHNSON, DW .
PREVENTIVE VETERINARY MEDICINE, 1991, 10 (04) :283-298
[5]  
Collett D, 1991, MODELLING BINARY DAT
[6]   PERINATAL LAMB MORTALITY IN WESTERN AUSTRALIA .1. GENERAL PROCEDURES AND RESULTS [J].
DENNIS, SM .
AUSTRALIAN VETERINARY JOURNAL, 1974, 50 (10) :443-449
[7]   An overview of techniques for dealing with large numbers of independent variables in epidemiologic studies [J].
Dohoo, IR ;
Ducrot, C ;
Fourichon, C ;
Donald, A ;
Hurnik, D .
PREVENTIVE VETERINARY MEDICINE, 1997, 29 (03) :221-239
[8]   EFFECTS OF BREED, HETEROSIS, AGE OF DAM, LITTER SIZE, AND BIRTH-WEIGHT ON LAMB MORTALITY [J].
GAMA, LT ;
DICKERSON, GE ;
YOUNG, LD ;
LEYMASTER, KA .
JOURNAL OF ANIMAL SCIENCE, 1991, 69 (07) :2727-2743
[9]   RISK-FACTORS ASSOCIATED WITH POSTPARTUM DEATHS IN EARLY BORN, HOUSED LAMBS IN SOUTHWEST ENGLAND [J].
GREEN, LE ;
MORGAN, KL .
PREVENTIVE VETERINARY MEDICINE, 1994, 21 (01) :19-27
[10]   MORTALITY IN EARLY BORN, HOUSED LAMBS IN SOUTH-WEST ENGLAND [J].
GREEN, LE ;
MORGAN, KL .
PREVENTIVE VETERINARY MEDICINE, 1993, 17 (3-4) :251-261