• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>獣医疫学雑誌 >Assessment of Lifetime Economic Returns of Sows by Parity of Culled Sows in Commercial Breeding Herds
【24h】

Assessment of Lifetime Economic Returns of Sows by Parity of Culled Sows in Commercial Breeding Herds

机译：通过商业繁殖群中淘汰母猪的均价评估母猪的终生经济回报

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of the present study were to determine the number of parities that a sow must remain in the herd for before lifetime net income becomes positive, in typical farrow-to-finish operations in Japan. A forther objective was to evaluate the sensitivity of lifetime net income to feed price, price for marketed pigs, feed conversion ratio, and number of pigs weaned. The reproductive data were collected from records of 53,996 sows born between 2001 and 2004 in101commercial herds. The economic models for lifetime net income by parity were constructed using reproductive data and economic assumptions. The economic assumptions were based on data obtained from previous studies and multiple producer groups. Lifetime net income in each parity was calculated as the sum of net income in each litter, including salvaged values for sows, minus gilt costs. The net income in each litter was calculated as the revenue obtained by sales of marketed pigs from each litter minus production costs. The costs included feed costs for growing pigs and sows, depreciations for replacement gilts, and the other costs for facility, breeding, veterinary treatment and vaccines, transportation and slaughter fees, utility and labor. Sensitivity analysis was performed to investigate how changes in feed price, the price for marketed pigs, feed conversion ratio, or the number of pigs weaned would affect economic returns. Lifetime net income increased from $-272.8 to $1,944.9 as the parity increased from1to 8. A sow reached a positive value of lifetime net income at parity 3, The net income from each litter of a sow increased from $145.8 to $390.2 as the parity increased from1to 5. Sensitivity analysis showed that if the feed price increased from $0.40/kg to $0.45/kg, the lifetime net income became negative in parities1to 4. Furthermore, if the feed price increased from $0.40/ kg to $0.50/kg, lifetime net income was negative in all parity groups. If the price for marketed pigs declined to $4.25/kg kg or lower, the lifetime netincome in all parity groups was negative. However, decreasing feed conversion ratio or increasing the number of pigs weaned increased lifetime net income. In conclusion, increased sow longevity results in increased lifetime net income of sows in commercial herds. Lower feed costs, decreased feed conversion ratio and increasing the number of pigs weaned also increased lifetime profitability of sows.
机译：本研究的目的是确定在日本典型的分娩至成活作业中，在终生净收入变为正数之前，母猪必须保留在牛群中的胎数。另一个目标是评估终生净收入对饲料价格，上市猪价格，饲料转化率和断奶猪的敏感性。生殖数据来自2001年至2004年间101个商业群中的53,996头母猪的记录。使用生殖数据和经济假设构建了按均价计算的终身净收入的经济模型。经济假设基于从先前研究和多个生产者团体获得的数据。每个胎次的终生净收入计算为每个窝的净收入之和，包括母猪的残值，减去母猪成本。每个窝的净收入计算为出售每个窝的出售生猪所获得的收入减去生产成本。这些费用包括生猪和母猪的饲料费用，替代母猪的折旧以及设施，育种，兽医治疗和疫苗的其他费用，运输和屠宰费，水电费和人工费。进行了敏感性分析，以调查饲料价格，上市猪价格，饲料转化率或断奶猪数量的变化将如何影响经济回报。终身净收入从-272.8美元增加到$ 1,944.9，随着比价从1增加到8。一头母猪在同等价位3达到终身净收入的正值，每头母猪的净收入从145.8美元增加到390.2美元，同等价格从1增至5.敏感性分析显示，如果饲料价格从$ 0.40 / kg增加到$ 0.45 / kg，则终身净收入在等价位1变为负4。此外，如果饲料价格从$ 0.40 / kg增加到$ 0.50 / kg，则终身净收入为在所有平价群体中均为负面。如果出售的生猪价格跌至$ 4.25 / kg公斤或更低，则所有平价组的终生净收入均为负数。但是，降低饲料转化率或增加断奶仔猪的数量会增加一生的净收入。总之，母猪寿命的延长导致商业猪群终生净收入的增加。较低的饲料成本，降低的饲料转化率和增加断奶猪的数量也提高了母猪的终生盈利能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号