【摘要】：本文旨在研究日糧不同粗蛋白質(zhì)水平對(duì)濟(jì)寧百日雞生產(chǎn)性能、蛋品質(zhì)、血清生化指標(biāo)、繁殖性能以及初生雛雞的影響,建立濟(jì)寧百日雞蛋白質(zhì)需要的析因模型,確定實(shí)際生產(chǎn)條件下濟(jì)寧百日雞適宜的蛋白質(zhì)需要量,為濟(jì)寧百日雞飼養(yǎng)標(biāo)準(zhǔn)的制定提供理論基礎(chǔ)和實(shí)踐依據(jù)。試驗(yàn)選用40周齡體型基本一致的健康濟(jì)寧百日雞產(chǎn)蛋種雞525只,隨機(jī)分為5個(gè)處理,每個(gè)處理105只雞,每個(gè)處理5個(gè)重復(fù),每個(gè)重復(fù)21只雞。試驗(yàn)采用單因素完全隨機(jī)試驗(yàn)設(shè)計(jì),5個(gè)粗蛋白質(zhì)梯度分別為13%、14%、15%、16%、17%,試驗(yàn)日糧其它主要營養(yǎng)指標(biāo)保持一致。預(yù)試期7d,試驗(yàn)期56d。試驗(yàn)內(nèi)容分為3部分,①日糧不同粗蛋白質(zhì)水平對(duì)濟(jì)寧百日雞生產(chǎn)性能、蛋品質(zhì)、血清生化指標(biāo)的影響;②日糧不同粗蛋白質(zhì)水平對(duì)濟(jì)寧百日雞繁殖性能的影響;③日糧不同粗蛋白質(zhì)水平對(duì)濟(jì)寧百日雞初生雛雞的影響。試驗(yàn)結(jié)果表明:日糧不同粗蛋白質(zhì)水平顯著影響了41-48周齡濟(jì)寧百日雞的產(chǎn)蛋數(shù)、產(chǎn)蛋率、蛋重、日產(chǎn)蛋量、日產(chǎn)合格種蛋量(P0.05),極顯著影響了日粗蛋白質(zhì)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(zhì)水平的增加濟(jì)寧百日雞的日粗蛋白質(zhì)攝入量具有明顯增加的趨勢,并且產(chǎn)生了和日糧粗蛋白質(zhì)水平相一致的變化趨勢,高蛋白質(zhì)組(16%、17%)與低蛋白質(zhì)組(13%、14%、15%)間差異極顯著(P0.01),并且低蛋白質(zhì)(13%、14%、15%)組間差異極顯著(P0.01)。在一定的日糧粗蛋白質(zhì)水平(13%-16%)限度范圍內(nèi),蛋重有隨著日糧粗蛋白質(zhì)水平的增加而增加的趨勢。高蛋白質(zhì)組(16%、17%)的產(chǎn)蛋數(shù)、產(chǎn)蛋率、日產(chǎn)蛋量、日產(chǎn)合格種蛋量均高于低蛋白質(zhì)組(13%、14%、15%)。16%蛋白質(zhì)組的產(chǎn)蛋性能最好。最高的日糧粗蛋白質(zhì)水平(17%)并未獲得最高的生產(chǎn)性能,獲得了最低的料蛋比。日糧不同粗蛋白質(zhì)水平顯著影響了41-48周齡濟(jì)寧百日雞的蛋重(P0.05),在一定的日糧粗蛋白質(zhì)水平(13%-16%)限度范圍內(nèi),隨著日糧粗蛋白質(zhì)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(zhì)水平的增加而增加,日糧蛋白質(zhì)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(zhì)水平顯著影響了濟(jì)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(biāo)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(zhì)水平顯著影響了41-48周齡濟(jì)寧百日雞的產(chǎn)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(zhì)水平幾乎未影響44周齡種蛋孵化的初生雛雞,僅對(duì)初生雛雞的心臟重產(chǎn)生了顯著影響(P0.05)。種雞日糧不同粗蛋白質(zhì)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(biāo),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(zhì)水平對(duì)濟(jì)寧百日雞生產(chǎn)性能、蛋品質(zhì)、血清生化指標(biāo)、繁殖性能以及初生雛雞的影響,建立濟(jì)寧百日雞蛋白質(zhì)需要的析因模型,確定實(shí)際生產(chǎn)條件下濟(jì)寧百日雞適宜的蛋白質(zhì)需要量。ADCPI=0.2680ADG+0.2711ADEM+3.2993BW0.75ADCPI=0.3347ADG+0.2784ADQEM+3.3684BW0.75滿足濟(jì)寧百日雞41-48周齡最佳生產(chǎn)性能的適宜日糧粗蛋白質(zhì)水平為15.49%。滿足濟(jì)寧百日雞41-48周齡最佳繁殖性能的適宜日糧粗蛋白質(zhì)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(xué)位授予單位】：山東農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S831.5

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本文編號(hào)：2187702