摘要
In 1994, a herd of red deer (Cervus elaphus) was introduced to Mexico from New Zealand; animals were distributed among 17 farms. Information was gathered from two farms situated in the Neotropical Realm, south of the Tropic of Cancer. Farm A is a research facility in the temperate highlands; Farm B is for extension purposes, in the dry tropics. Being at similar latitudes (20°47'N and 20°04'N, respectively), both have comparable pho‐toperiods. Their main differences are their altitudes and climates (1990 versus 40 m above sea level; 17.4 versus 25.0°C average temperature; 460–630 versus 1000–1100 mm annual rainfall, respectively). On Farm A, animals were either confined (30 weeks) in earth‐floor pens and fed on hay, or grazed (20 weeks) on a mixed irrigated pasture. Until 2000, they were neither vaccinated, nor drenched or supplemented. Breeding lasted 8–9 weeks in late autumn (single‐sire mating; groups of 12–25 hinds). The herd's fertility rate was 92%. Most calves (80%) were born during June, weighing 9.4 kg. On Farm B, animals grazed year round on a mixture of tropical pastures, supplemented with assorted feeds. They were vaccinated against clostridial diseases, shipping fever, and paralytic rabies; drenched quarterly and dipped for tick prevention twice a month. They mated under uncontrolled breeding management for 2.5 months; 81% gave birth within May and June. Fertility was 79%; calves weighed 7.2 kg. In general, deer in Farm B seemed to be in a comparatively better body condition, however their productive performance appeared to indicate otherwise. On both farms, deer had kept their characteristic reproductive seasonal‐ity, although the calving season tended to last longer than in their place of origin.
摘要译文
1994年，红鹿（马鹿）一群被引入到墨西哥，从新西兰的;动物分布在17个农场。信息是从两个农场位于新热带境界，南北回归线聚集。农场A是研究设施中温带高原;农场B是延长的目的，在干燥的热带地区。处于同纬度（20°47''''N，20°04''''N，分别），都具有可比性河粉它们的主要区别是他们的海拔和气候条件（1990年比40米以上的海拔; 17.4与25.0℃，平均温度; 460-630对1000-1100毫米降雨量，分别）。在农地里，动物要么局限于（30周）的地球也湿透或补充。养殖深秋持续8-9周（单称重9.4千克。在农场B，动物啃食常年在热带草原的混合，辅以配套的饲料。他们接种了梭菌病，航运发热，和麻痹型狂犬病;湿透季度和一个月蘸蜱预防两次。他们在不受控制的饲养管理交配2.5个月; 81％生下了五，六月份之内。生育率为79％;犊牛体重7.2公斤。在一般情况下，在农场B鹿似乎是一个相对较好的身体条件，但是其生产性能似乎表明并非如此。在这两个农场，鹿一直保持其特有的繁殖季节
K. Flores[a]; A. A. Luna[b]; C. Tapia[c]; J. L. Rivera[c]; C. G. Vásquez[d] ; A. Shimada[a][b][e]. Productive behaviour of red deer (Cervus elaphus) relocated to the Neotropical Realm[J]. New Zealand Journal of Agricultural Research, 2005,48(3): 321-328