【正文】 00kg的奶牛每天產 19kg牛奶為例計算 Sample calculations for 600 kg dairy cow, producing 19 kg milk/day 營養(yǎng)需求量 Nutrient Requirements 能量 (kg) Energy 蛋白質 (kg) protein 鈣 (g) Ca (g) 磷 (g) P 維持生命 Maintenance .5 21 17 產 19kg奶 19 kg production 50 33 共計 Total 71 50 奶牛飼料包括 9kg玉米秸稈 ,9kg添加劑和玉米的比例為 1:3的濃縮飼料 Feed provided, about 9 kg of corn stover and 9 kg of concentrate of 1:3 supp:corn 9kg玉米秸稈 Corn stover, 9 kgs 15 8 共計 :Total 38 42 9kg谷類復合飼料 Grain concentrate, 9kg 23 34 Requirements adapted from NRC, nutrient requirements of dairy cattle 限制家畜生產的營養(yǎng)物質 First Limiting Nutrient 以體重為 600kg的奶牛每天產 19kg牛奶為例計算 Sample calculations for 600 kg dairy cow, producing 19 kg milk/day 營養(yǎng)需求量 Nutrient Requirements 能量 (kg) Energy 蛋白質 (kg)protein 鈣 (g) Ca (g)磷 (g) P 維持生命 Maintenance .5 21 17 產 19kg奶 19 kg production 50 33 共計 Total 71 50 Feed provided, 6 kg of alfalfa cubes, 4 kg of corn stover, 8 kg of concentrate of 1:3 奶牛飼料包括 6kg苜蓿干草 ,4kg玉米秸稈 ,8kg比例為 1:3的濃縮飼料 9kg玉米秸稈 Corn stover, 4 kgs 8 5 共計 Total 88 49 Grain concentrate, kg 32 苜蓿草塊 Alfalfa cubes .9 60 12 Requirements adapted from NRC, nutrient requirements of dairy cattle 限制家畜生產的營養(yǎng)物質 First Limiting Nutrient Signs of deficiencies ? poor production ? thin animals ? tired animals, lack interest ? rough hair coats ? do strange things ? don’t heal properly, poor membranes ? anti social 家畜缺乏營養(yǎng)物質的癥狀 ? 產量下降 ? 膘情差，個體瘦小 ? 家畜缺乏活力，食欲下降 ? 皮毛粗糟 ? 行為不正常 ? 愈合能力差，膜功能降低 ? 不合群 限制家畜生產的營養(yǎng)物質 First Limiting Nutrient Summary ? good quality forage is key to successful dairy operation ? the nutrient we don’t have is the one we want ? known mineral shortages ? there is a reason for problems we see in our cows ? some signs to watch for! 總結 ? 優(yōu)質飼料是成功飼養(yǎng)奶牛的關鍵 ? 家畜缺乏的營養(yǎng)元素便是其最需要的營養(yǎng)物 ? 家畜通常缺乏礦質營養(yǎng) ? 奶牛的各種問題必有其原因 ? 注意家畜表現(xiàn)的各種癥狀！ 演講完畢，謝謝觀看！