For female chickens, however, the body weight at 14 wks of age for AA was greater (p.05) than that for TT. Therefore, P0U1F1_6 is an effective molecular marker that can be used in MAS program for early growth rate in chicken, especially for male chickens.The better understanding of the mechanism of broodiness stands great significance not only for avian genetics, behavior, and endocrinology, but also for the acceleration of poultry breeding progress against broodiness to enhance egg producti

研究家禽就巢性的遺傳機理免费美女黄，不但對鳥類遺傳學(xué)、行為學(xué)真人黄色视频免费的、內(nèi)分泌學(xué)等方面有重要的理論意義特黄一级免费视频，而且本研究成果有助于加速無就巢性或低就巢性的家禽品種或品系的培育，從而提高禽群的產(chǎn)蛋性能和種剛性能手机在线看永久AV片免费无毒，尤其對我國地方禽種資源的開發(fā)利用有重要的意義美女黄网站一区二区，具有廣闊的應(yīng)用前景。

Prolactin,Growth Hormone, and Thyroid-stimulating Hormone-β, secreting by chicken anterior pituitary, are essential hormones affecting chicken laying ability, growth rate, and immunity via regulating chicken broodiness, development, and immune response.

催乳素（Prolactin精品推荐本地黄色视频，PRL）欧美一级,日韩三级、生長激素（Growth Hormone，GH）在线播放你懂的网站、促甲狀腺素β（Thyroid-stimulating Hormone-β亚洲黄色视频电影，TSHβ）是家禽垂體前葉分泌的具有重要生理功能的激素，這些激素通過調(diào)控家禽就巢性的發(fā)生與維持国产a√视色、生長發(fā)育亚洲日本天堂欧美精品、免疫應(yīng)答等過程來影響家禽的產(chǎn)蛋性能、生長性能以及免疫力日韩网红美女主播自拍视频网站。

College of Animal Science and Technology, China Agricultural University, Beijing 100094, ChinaProlactin,Growth Hormone, and Thyroid-stimulating Hormone-β, secreting by chicken anterior pituitary, are essential hormones affecting chicken laying ability, growth rate, and immunity via regulating chicken broodiness, development, and immune response.

催乳素（Prolactin日韩成人作爱在线视频观看网站大全，PRL）、生長激素（Growth Hormone一区二区日韩免费播放，GH）欧美一级黄色男女尻屄视频、促甲狀腺素β（Thyroid-stimulating Hormone-β，TSHβ）是家禽垂體前葉分泌的具有重要生理功能的激素亚洲成熟熟女一级毛片，這些激素通過調(diào)控家禽就巢性的發(fā)生與維持无码乱伦国产、生長發(fā)育男女激情免费网站、免疫應(yīng)答等過程來影響家禽的產(chǎn)蛋性能、生長性能以及免疫力操屄视。

In a majority of poultry plants in the United States, an immersion water chiller is used to chill birds.

在美國的大多數(shù)家禽工廠国产女同调教精品视频，用浸泡冷水機組來冷凍家禽。

Any of an English breed of domestic fowl often crossbred to produce roasters.

英國品種的小家禽欧美老人黄片；主要用于雜交產(chǎn)生適合烤的家禽无码码一区精品品和亚洲洲。

Based on different DNA fragments between Z and W chromosome, the developed PCR method has no risk of the mistrial of those sex identification markers depended on W chromosome, and can omit extra internal control or restriction enzyme deigestion. The DNA-based spindlin gene approach can provide a rapid, exact and low cost method for sex identification in poultry.

本研究以PCR檢測家禽Z與W性染色體中之紡綞體蛋白基因intron序列，以其長度的差異來鑒定家禽性別久久视频一二区，可避免僅檢測W染色體性別鑒定標(biāo)記的誤判精品久久九九九久久久久国产，且不需再搭配內(nèi)部對照，更不需結(jié)合限制酶切割法即進行家禽性別鑒定国产欧美精品亚洲AMV。

The content of poultry science is mainly composed of introduction, poultry breeding, reproduction and hatch, as well as nutrition and management for feeding, environment control, equipments for poultry farm and technology for feeding, etc.

家禽學(xué)的主要內(nèi)容為：緒論A级毛片喷潮高清免费观看、家禽的育種、繁殖人人插人人爽爽人人干射、孵化3Dh色视频在线播放；營養(yǎng)與飼養(yǎng)管理；家禽的環(huán)境午夜福利小黄片、禽舍與設(shè)備及各階段的飼養(yǎng)管理技術(shù)等免费国产a国产片高清网站。

Fresh, frozen or live poultry, other than live poultry on a poultry farm

新鮮、冷藏或活家禽香港日本韩国一级二级三级网站，不包括家禽農(nóng)場的活家禽

The difference between china poultry industry and international standard is becoming smaller and smaller in breeder,disease control,nutrition and technique after rapid development in china ,but the difference is still big on poultry house environmental control,The effection of house environment improvement on chick health and performance is overlooked . Poultry house environmental control is becoming more and more important in poultry industry.

隨著近年來養(yǎng)雞業(yè)的迅猛發(fā)展，目前我國在品種欧美性爱视频免费的、營養(yǎng)成年人黄色视频欧美、疾病控制和飼養(yǎng)技術(shù)方面與國際先進水平的差距逐漸縮小，但在環(huán)境控制方面還存在著很大的差距色色色色色色色色网，環(huán)境控制對家禽生產(chǎn)的影響一直沒有得到應(yīng)有的重視免费黄a网站，在國內(nèi)目前基本解決了家禽良種引進、烈性傳染病控制看黄片.con、營養(yǎng)和飼養(yǎng)技術(shù)等問題的前提下亚洲一区中文字幕在线，雞舍環(huán)境控制在家禽生產(chǎn)中起著非常重要的作用。

At present, the village for many years more than 5000 poultry rearing large families more than 50 years, the volume of poultry in more than 40 million, the poultry industry could be in a value of about 14,000,000 yuan.

目前欧美特级黄色，全村有年飼養(yǎng)家禽5000只以上的飼養(yǎng)大戶50多戶亚洲第一页综合，年家禽飼養(yǎng)量40多萬只，家禽飼養(yǎng)業(yè)年可創(chuàng)值約1400萬元手机看片国产午夜精品。

fowl achondroplasia：家禽軟骨癥

four-carbon plant 碳植物 | fowl achondroplasia 家禽軟骨癥 | fowl leukosis 家禽白血癥

fowl coryza：家禽鼻炎;可利查

家禽 fowl | 家禽霍亂 fowl cholera | 家禽鼻炎;可利查 fowl coryza

fowl cholera：家禽霍亂

家禽 fowl | 家禽霍亂 fowl cholera | 家禽鼻炎;可利查 fowl coryza

Histopathology of Poultry：家禽組織病理學(xué)

家禽呼吸系統(tǒng)疾病 Respiratory Diseases of Poultry 2 | 家禽組織病理學(xué) Histopathology of Poultry 2 | 消化道病理學(xué) Pathology of Digestive Tract 2

avian nephrosis：家禽腎病

\\"家禽單核球癥\\",\\"avian monocytosis\\" | \\"家禽腎病\\",\\"avian nephrosis\\" | \\"雞瘟\\",\\"avian plague\\"

poultry bradypepsia：家禽消化不良

poultry bacterial arthritis 家禽細(xì)菌性關(guān)節(jié)炎 | poultry bradypepsia 家禽消化不良 | poultry colibacillosis 家禽大腸桿菌病

caponizing; caponization：閹(家禽);去勢(家禽)

"去勢(雞)","caponize" | "閹(家禽);去勢(家禽)","caponizing; caponization" | "肘端后腫","capped elbow"

free range poultry farm：放牧式家禽農(nóng)場

free range livestock keeping 自由范圍禽畜飼養(yǎng);放牧式禽畜飼養(yǎng) | free range poultry farm 放牧式家禽農(nóng)場 | free range poultry keeping 自由范圍家禽飼養(yǎng);放牧式家禽飼養(yǎng)

poultry feed：家禽飼料

poultry 家禽 | poultry feed 家禽飼料 | poultry ring 家禽足環(huán)子

free range poultry keeping：自由范圍家禽飼養(yǎng);放牧式家禽飼養(yǎng)

free range poultry farm 放牧式家禽農(nóng)場 | free range poultry keeping 自由范圍家禽飼養(yǎng);放牧式家禽飼養(yǎng) | free-vented 自然排氣