【摘要】：本文旨在研究日糧不同粗蛋白質水平對濟寧百日雞生產性能、蛋品質、血清生化指標、繁殖性能以及初生雛雞的影響,建立濟寧百日雞蛋白質需要的析因模型,確定實際生產條件下濟寧百日雞適宜的蛋白質需要量,為濟寧百日雞飼養(yǎng)標準的制定提供理論基礎和實踐依據(jù)。試驗選用40周齡體型基本一致的健康濟寧百日雞產蛋種雞525只,隨機分為5個處理,每個處理105只雞,每個處理5個重復,每個重復21只雞。試驗采用單因素完全隨機試驗設計,5個粗蛋白質梯度分別為13%、14%、15%、16%、17%,試驗日糧其它主要營養(yǎng)指標保持一致。預試期7d,試驗期56d。試驗內容分為3部分,①日糧不同粗蛋白質水平對濟寧百日雞生產性能、蛋品質、血清生化指標的影響;②日糧不同粗蛋白質水平對濟寧百日雞繁殖性能的影響;③日糧不同粗蛋白質水平對濟寧百日雞初生雛雞的影響。試驗結果表明:日糧不同粗蛋白質水平顯著影響了41-48周齡濟寧百日雞的產蛋數(shù)、產蛋率、蛋重、日產蛋量、日產合格種蛋量(P0.05),極顯著影響了日粗蛋白質攝入量、料蛋比(P0.01),未顯著影響耗料量、體重、代謝體重、日增重、不合格蛋率、存活率(P0.05)。隨著日糧粗蛋白質水平的增加濟寧百日雞的日粗蛋白質攝入量具有明顯增加的趨勢,并且產生了和日糧粗蛋白質水平相一致的變化趨勢,高蛋白質組(16%、17%)與低蛋白質組(13%、14%、15%)間差異極顯著(P0.01),并且低蛋白質(13%、14%、15%)組間差異極顯著(P0.01)。在一定的日糧粗蛋白質水平(13%-16%)限度范圍內,蛋重有隨著日糧粗蛋白質水平的增加而增加的趨勢。高蛋白質組(16%、17%)的產蛋數(shù)、產蛋率、日產蛋量、日產合格種蛋量均高于低蛋白質組(13%、14%、15%)。16%蛋白質組的產蛋性能最好。最高的日糧粗蛋白質水平(17%)并未獲得最高的生產性能,獲得了最低的料蛋比。日糧不同粗蛋白質水平顯著影響了41-48周齡濟寧百日雞的蛋重(P0.05),在一定的日糧粗蛋白質水平(13%-16%)限度范圍內,隨著日糧粗蛋白質水平的增加蛋重表現(xiàn)出了增加的趨勢。顯著影響了48周齡的蛋殼硬度(P0.05),蛋殼硬度隨著日糧粗蛋白質水平的增加而增加,日糧蛋白質水平最高(17%)蛋殼硬度最大。未顯著影響蛋白高度、蛋黃比率、哈氏單位、蛋黃重、蛋形指數(shù)、蛋殼重、蛋殼厚度、蛋黃蛋白比(P0.05)。日糧不同粗蛋白質水平顯著影響了濟寧百日雞44周齡的血清總蛋白、血清白蛋白、血清尿酸(P0.05),但未顯著影響44周齡的血清尿素(P0.05)。48周齡的血清生化指標幾乎未受影響(P0.05),僅顯著影響了48周齡的血清尿素(P0.05)。日糧不同粗蛋白質水平顯著影響了41-48周齡濟寧百日雞的產蛋總數(shù)、種蛋合格數(shù)、出雛數(shù)(P0.05)。種蛋合格率、受精率均未受到顯著影響(P0.05)。種雞日糧不同粗蛋白質水平幾乎未影響44周齡種蛋孵化的初生雛雞,僅對初生雛雞的心臟重產生了顯著影響(P0.05)。種雞日糧不同粗蛋白質水平顯著影響了48周齡種蛋孵化的初生雛雞的初生重(P0.05),肝臟重受到了極顯著的影響(P0.01)。幾乎未影響初生雛雞的血清生化指標,僅顯著影響了48周齡種蛋孵化的初生雛雞的血清尿酸(P0.05)。綜合日糧不同粗蛋白質水平對濟寧百日雞生產性能、蛋品質、血清生化指標、繁殖性能以及初生雛雞的影響,建立濟寧百日雞蛋白質需要的析因模型,確定實際生產條件下濟寧百日雞適宜的蛋白質需要量。ADCPI=0.2680ADG+0.2711ADEM+3.2993BW0.75ADCPI=0.3347ADG+0.2784ADQEM+3.3684BW0.75滿足濟寧百日雞41-48周齡最佳生產性能的適宜日糧粗蛋白質水平為15.49%。滿足濟寧百日雞41-48周齡最佳繁殖性能的適宜日糧粗蛋白質水平為14.81%。
[Abstract]:The purpose of this paper is to study the effects of dietary crude protein levels on production performance, egg quality, serum biochemical indexes, reproductive performance and newborn chickens of Jining 100-day chickens, establish a factorial model of protein requirement of Jining 100-day chickens, and determine the optimum protein requirement of Jining 100-day chickens under actual production conditions. 525 healthy Jining 100-day laying hens of 40 weeks old were randomly divided into 5 treatments, 105 chickens in each treatment, 5 replicates in each treatment and 21 chickens in each replicate. The experiment was divided into three parts: (1) the effects of dietary crude protein levels on the performance, egg quality and serum biochemical indexes of Jining 100-day chickens; (2) the effects of dietary crude protein levels on the reproductive performance of Jining 100-day chickens; (3) the effects of dietary crude protein levels on the reproductive performance of Jining 100-day chickens; The results showed that dietary crude protein levels significantly affected the number of eggs laid, egg production rate, egg weight, daily egg production, and the number of qualified eggs laid per day (P 0.05), and significantly affected the daily crude protein intake, feed-to-egg ratio (P 0.01), but not significantly. The daily intake of crude protein in Jining 100-day chickens increased significantly with the increase of dietary crude protein level, and the trend was consistent with dietary crude protein level. High protein group (16%, 17%) and low protein group (13%). The difference between 14% and 15% was very significant (P 0.01), and the difference between low protein (13%, 14%, 15%) groups was very significant (P 0.01). Within a certain dietary crude protein level (13% - 16%), the egg weight tended to increase with the increase of crude protein level. The highest dietary crude protein level (17%) did not achieve the highest production performance and the lowest feed-egg ratio. Dietary crude protein levels significantly affected the egg weight of Jining 100-day chickens aged 41-48 weeks (P 0.05), and crude protein levels in a certain diet. Egg weight increased with the increase of dietary crude protein level within the limit of dietary crude protein level (13%-16%). Egg shell hardness (P 0.05) significantly affected 48-week-old eggshell. Egg shell hardness increased with the increase of dietary crude protein level. Dietary protein level was the highest (17%) eggshell hardness. Dietary crude protein levels significantly affected serum total protein, serum albumin, serum uric acid (P 0.05), but did not significantly affect serum urea (P 0.05) at 44 weeks of age. The total number of eggs laid, the number of eggs qualified and the number of chickens laid (P 0.05) were significantly affected by the dietary crude protein levels. The qualified rate of eggs and fertilization rate were not significantly affected by the dietary crude protein levels (P 0.05). The dietary crude protein levels of broilers significantly affected the birth weight of 48-week-old broilers (P 0.05), and the liver weight was significantly affected (P 0.01). Serum uric acid (P 0.05) of newborn chickens hatched with 48-week-old brood eggs was studied. The effects of different crude protein levels in diets on performance, egg quality, serum biochemical indexes, reproductive performance and newborn chickens of Jining 100-day chickens were comprehensively analyzed. A factorial model of protein requirement of Jining 100-day chickens was established to determine the optimum production conditions for Jining 100-day chickens. ADCPI = 0.2680ADG + 0.2711ADEM + 3.2993BW0.75ADCPI = 0.3347ADG + 0.2784ADQEM + 3.3684BW0.75. The optimum dietary crude protein level for Jining 100-day chickens at 41-48 weeks of age was 15.49%. The optimum dietary crude protein level for Jining 100-day chickens at 41-48 weeks of age was 14.81%.
【學位授予單位】：山東農業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：S831.5

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