摘要
后备牛阶段的乳腺发育决定成年后的产奶性能,而不同生理阶段的乳腺发育有其不同的特点。奶牛出生、初情期和妊娠期营养水平对乳腺生长发育和优质奶牛培育至关重要。通过日粮营养素调控乳腺发育是提高奶牛产奶性能的重要环节。本文就奶用牛后备牛阶段的乳腺发育特点及规律,乳腺发育对成年泌乳性能的影响,乳腺发育的评价指标及后备牛乳腺发育营养调控做一综述。
Mammary development of replacement heifers, which is a decisive factor on milk yield in the future, has different characteristics in different physiological stages. The nutrition level from birth till first calving has essential and important effects on mammary development and high-quality dairy cattle breeding. To regulate mammary development through dietary nutrition level is an important part of improving milk performance in dairy cow. This article reviewed tile rules, characteristics, evaluation indicators and its effects on future milk performance of heifers＇ mammary development and nutritional regulation.
出处
《中国奶牛》
2014年第3期5-9,共5页
China Dairy Cattle
基金
现代农业产业技术体系北京市奶牛创新岗位专项
"十二五"国家支撑计划"华北农区及北方大城市奶牛健康养殖生产技术集成及产业化示范"
(2012BAD12B06)
关键词
后备牛
乳腺
发育
营养调控
Heifers
Mammary gland
Development
Nutritional regulation
