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野生竹鼠繁殖性能的研究 被引量:1
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作者 高俊波 梁仕岩 +1 位作者 黄雪飞 刘华平 《中国畜牧兽医文摘》 2013年第4期44-44,55,共2页
本文通过对人工驯化后的野生竹鼠测定其各项繁殖性能指标,探讨了影响野生竹鼠繁殖性能的因素。结果显示,竹鼠的母性优劣将直接影响仔鼠的成活率及后期的生长速度,因此,加强野生母鼠的驯化与饲养管理工作至关重要。
关键词 野生竹鼠 断奶成活率 平均断奶重 平均产仔数 6月龄
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4种方法预防仔猪黄、白痢试验效果观察
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作者 陈现伟 李炳刚 孟秀彦 《兽药与饲料添加剂》 2005年第6期6-8,共3页
通过A、B、C、D4种方法对仔猪黄、白痢进行预防,结果表明:B、C、D3组比A组发病率分别减少51.73、61.33和64.81个百分点,死亡率分别降低8.91、14.13和18.26个百分点,差异极显著(P<0.01);B组仔猪平均断奶重高于A组10.69%,差异显著(P<... 通过A、B、C、D4种方法对仔猪黄、白痢进行预防,结果表明:B、C、D3组比A组发病率分别减少51.73、61.33和64.81个百分点,死亡率分别降低8.91、14.13和18.26个百分点,差异极显著(P<0.01);B组仔猪平均断奶重高于A组10.69%,差异显著(P<0.05);C、D两组仔猪平均断奶重分别高于A组20.68%、21.24%,差异极显著(P<0.01);C、D两组的发病率均极显著地低于B组(P<0.01),C组死亡率比B组减少5.22个百分点,差异显著(P<0.05),D组死亡率比B组减少9.35个百分点,差异极显著(P<0.01);C、D两组仔猪平均断奶重高于B组9.02%、9.53%,差异均显著(P﹤0.05);D组的发病率、死亡率均显著低于C组(P﹤0.05),D组仔猪平均断奶重高于C组0.47%,但差异不显著(P﹥0.05);另外预防和治疗费用B、C、D3组分别比A组低1.04、0.71、0.64元/头,其中以B组费用最低,仅为0.09元/头。 展开更多
关键词 仔猪 黄痢 白痢 K88-K99-987P 微生态制剂 平均断奶重
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Feeder Type Affects Growth in Weanling Horses
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作者 Carol Jean Thompson Kevin Halden Kline 《Journal of Agricultural Science and Technology(A)》 2015年第7期616-620,共5页
In the interest of decreasing feed costs while maximizing the growth of weanling horses, this study examined the potential difference in the average daily gain (ADG), gain to feed ratio (G/F), and apparent dry mat... In the interest of decreasing feed costs while maximizing the growth of weanling horses, this study examined the potential difference in the average daily gain (ADG), gain to feed ratio (G/F), and apparent dry matter and crude protein digestibility in horses fed with the same diet provided in different feeder types. Sixteen weanling standardbred horses were used for the duration of the 9-week study. The horses were given 2.5% of their body weight in hay and grain daily, 2% hay and 0.5% grain, as fed in two equal feedings at 7:00 am and 7:00 pm. The first treatment used a combined hay and grain feeder with the hay rack positioned over a manger compartment. The second treatment provided hay in an open hay rack and grain in a separate, open-topped feed tub, not positioned under the hay rack. The two groups, with eight horses--four female and four male in each group, were fed in one manner or the other for the length of the study. The weanlings fed in the combined hay and grain feeder had a greater ADG (0.52 kg/d vs. 0.41 kg/d) and G/F (0.06 vs. 0.05) than the horses with the separate hay and grain feeders. Both ADG and G/F means between treatments were statistically different (P 〈 0.05). There was not a significant difference (P 〉 0.05) in the apparent digestibility of dry matter or crude protein between the two groups. Therefore, it was concluded that the combined feeding system resulted in greater growth and apparent G/F most likely due to decreased feed wastage; however, apparent digestibility was not different between feeding systems. 展开更多
关键词 HORSE GROWTH DIGESTIBILITY feeder.
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