Schüddemage M, Lange K
Institut für Tierzucht und Haustiergenetik, Fachgebiet Tierhaltung und Haltungsbiologie, Justus-Liebig-Universität Giessen.
Berl Munch Tierarztl Wochenschr. 2000 Mar;113(3):88-93.
234 female fattening rabbits with slaughtering on day 84 of age (6 rounds) and 62 does (11 rounds) kept under three light regimes: a) natural light (NL) with an intensity of 27 Lux on average, b) artificial light (AL 8) with 8 hours light a day and c) artificial light (AL 16) with 16 hours light a day (both AL with a mean light intensity of 60 Lux) were included in investigations. Weight of ovaries and uteri was measured and percentage of females with follicular development (follicles with diameter of > 1 mm, Corpora lutea, Corpora hemorrhagica) was verified after slaughter in fattening rabbits. Data of fertility (rate of conception, litter size and litter weight at birth and at weaning) were recorded in does to calculate on this basis pup index. Weight of ovaries was not influenced by light regime. Female rabbits kept under AL 8 had significantly lowest mean weight of uterus and lowest percentage of animals with follicular development (39.7% compared with 53.1% in AL 16 and 56.3% in NL). Against this, highest rate of conception (69.3%) and highest pup index alive born and weaned pups (593, 547 pups per 100 inseminated does resp.) were found in does kept under AL 8. Corresponding values were 65.9% rate of conception, 565 alive born and 539 weaned pups/100 does in AL 16 and 65.7%, 524, 505 pups resp. in NL.
选取234只育肥母兔（6批次）和62只母兔（11批次），在三种光照条件下饲养：a）自然光（NL），平均光照强度为27勒克斯；b）人工光照（AL 8），每天光照8小时；c）人工光照（AL 16），每天光照16小时（两种人工光照的平均光照强度均为60勒克斯）。测量卵巢和子宫的重量，并在育肥兔屠宰后检查有卵泡发育（直径>1毫米的卵泡、黄体、出血性黄体）的母兔百分比。记录母兔的繁殖力数据（受孕率、产仔数以及出生和断奶时的窝重），并据此计算幼崽指数。光照条件对卵巢重量没有影响。处于AL 8光照条件下的母兔子宫平均重量显著最低，卵泡发育的动物百分比也最低（39.7%，而AL 16条件下为53.1%，自然光条件下为56.3%）。与此相反，处于AL 8光照条件下的母兔受孕率最高（69.3%），活产和断奶幼崽的幼崽指数最高（每100只授精母兔分别为593只、547只幼崽）。AL 16条件下相应的值为受孕率65.9%，活产565只，断奶幼崽539只/100只母兔；自然光条件下分别为65.7%、524只、505只幼崽。
