| 郎倩倩,肖昊,王丽,等.优质鸡腹脂选择方法研究进展[J].广东农业科学,2019,(9-10):- |
|
PDF
HTML
优质鸡腹脂选择方法研究进展 |
| Research Progress on Selection Methods of Abdominal Fat for High Quality Chicken |
| 投稿时间：2019-06-24 修订日期：2019-09-15 |
| DOI： |
| 中文关键词: 优质鸡 腹脂重 腹脂率 血浆VLDL浓度 分子遗传标记 |
| 英文关键词: high quality chicken abdominal fat weight abdominal fat percentage the concentration of plasma VLDL |
| 基金项目:广东省省级现代农业(畜禽健康养殖)产业技术研发中心建设项目,广东省畜禽育种与营养研究重点实验室运行经费(2014B030301054) |
|
| 摘要点击次数: 237 |
| 全文下载次数: 0 |
| 中文摘要: |
| 优质鸡的饲养日龄较长，母鸡一般饲养至接近性成熟才上市，沉积的脂肪较多。鸡体脂主要包括腹脂、皮下脂肪和肌间脂肪。现代商业肉鸡品种每千克体重就包含150~200 g脂肪，且其中绝大多数脂肪并非生理所需，不但浪费饲料，还会直接影响肉产品的加工，而且会降低屠宰率和经济效益。脂肪的过度沉积已成为肉鸡生产中所面临的一个严峻问题，而腹脂过多更是制约肉鸡生产效率的一个重要因素。因此，挑选育种鸡时，降低腹脂沉积具有重要意义。国内外学者已经从遗传育种、生理生化等方面对腹脂进行选择，并取得了一定进展。从直接选择法（同胞屠宰法直接选择）和间接选择法两个角度对肉鸡腹脂选择方法进行综述，其中间接选择法主要包括对饲料转化率的选择、对体尺性状的选择、对血液生化指标的选择以及遗传选择。 |
| 英文摘要: |
| High-quality chickens are usually raised for a long time, and hens are always raised until they are close to sexual maturity, so they are prone to deposit a lot of fat.Chicken body fat mainly includes abdominal fat, subcutaneous fat and intermuscular fat. Modern commercial broilers contain 150 and 200 grams of fat per kilogram of body weight, and the vast majority of them are not physiologically necessary, which not only leads to a lot of waste of feed, but also directly affect the processing of meat products, and reduce the slaughtering rate and economic benefits. Excessive deposition of fat has become a serious problem in broiler production, and abdominal fat has been an important factor that restricts the production efficiency of broilers. Therefore, it is of great significance to reduce abdominal fat deposition when breeding the chicken. Scholars at home and abroad have made some progress in the selection of abdominal fat from the aspects of genetics and breeding, physiology and biochemistry and so on. In this paper, the selection methods of abdominal fat deposition in breeding broilers were reviewed from two aspects: direct selection (direct selection by sibling slaughtering) and indirect selection. The indirect selection method mainly includes the selection of feed conversion rate, the selection of body size traits, the selection of blood biochemical indexes and genetic selection and so on. |
|
查看/发表评论 下载PDF阅读器 |
|
|
|
