Sun Lin, Yin Qiang, Gentu Ge, Xue Yanlin, Hou Meiling, Liu Liying, Jia Yushan
College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China.
Inner Mongolia Academy of Agricultural sciences & Animal Husbandry, Hohhot, China.
Anim Sci J. 2018 Feb;89(2):359-366. doi: 10.1111/asj.12928. Epub 2017 Oct 11.
A feeding experiment was carried out to determine the effects of different proportions of alfalfa hay and maize stover on the growth performance and carcass characteristics of fattening lambs. Forty-two healthy 3.5-month-old male Small-tail Han lambs of 23.89 ± 0.38 kg body mass were assigned to seven groups, which were fed mixed diets composed of maize stover and alfalfa hay containing 0%, 30%, 40%, 50%, 60%, 70% or 100% maize stover on a dry matter (DM) basis. Each lamb received 1.5 kg DM of forage mixture three times daily and supplementary concentrate (0.5 kg corn per lamb per day) for 60 days. Compared with the control forage diet of maize stover only, forage intake rate and forage conversion rate on the 40% maize stover/60% alfalfa hay mixture were 30% and 5% higher, respectively. Body weight, dressing percentage and net income were 6.7 kg, 8% and 94.37 Yuan higher per lamb, respectively. Thus, feeding lambs with a forage mixture of maize stover and alfalfa hay in a ratio of 40:60 optimized the production performance, slaughter performance, and the income derived from lambs.
进行了一项饲养试验，以确定不同比例的苜蓿干草和玉米秸秆对育肥羔羊生长性能和胴体特性的影响。将42只体重为23.89±0.38千克、健康的3.5月龄雄性小尾寒羊羔羊分为7组，分别饲喂以干物质（DM）计含有0%、30%、40%、50%、60%、70%或100%玉米秸秆的玉米秸秆和苜蓿干草混合日粮。每只羔羊每天分三次采食1.5千克干物质的草料混合物，并补充精饲料（每只羔羊每天0.5千克玉米），持续60天。与仅以玉米秸秆为对照草料日粮相比，40%玉米秸秆/60%苜蓿干草混合物的草料采食率和草料转化率分别提高了30%和5%。每只羔羊的体重、屠宰率和纯收入分别高出6.7千克、8%和94.37元。因此，以40:60的比例用玉米秸秆和苜蓿干草的草料混合物喂养羔羊，可优化生产性能、屠宰性能以及羔羊的收益。
