產(chǎn)蛋雞日糧銅鐵鋅錳優(yōu)化供給方案初探
發(fā)布時(shí)間：2018-08-18 14:28
【摘要】：本試驗(yàn)旨在研究銅、鐵、鋅、錳供給方案對(duì)蛋雞生產(chǎn)性能、雞蛋品質(zhì)、養(yǎng)分表觀利用率的影響,進(jìn)而探索對(duì)蛋雞實(shí)際生產(chǎn)有效的微量元素最佳添加方案。試驗(yàn)采用單因素完全隨機(jī)設(shè)計(jì),540羽25周齡羅曼褐殼蛋雞隨機(jī)等分為5處理(方案),每處理6重復(fù),每重復(fù)18羽。整個(gè)試驗(yàn)期共配制5批基礎(chǔ)日糧,5批基礎(chǔ)日糧間飼料原料來自不同批次,每批5組基礎(chǔ)日糧,5組基礎(chǔ)日糧間飼料原料來自相同批次。方案1,飼喂不添加4種微量元素的基礎(chǔ)日糧(B);方案2,不考慮基礎(chǔ)日糧中微量元素含量,直接按NRC(1994)推薦量添加(B+N);方案3,以基礎(chǔ)日糧中實(shí)測(cè)微量元素含量占NRC推薦量倍數(shù)最大者為標(biāo)準(zhǔn),將其余3種元素按此倍數(shù)補(bǔ)齊(B-MN);方案4,將基礎(chǔ)日糧中微量元素含量換算成有效含量(假設(shè)基礎(chǔ)日糧中微量元素的生物學(xué)效價(jià)為30%,且默認(rèn)NRC推薦量為有效含量),以NRC推薦量為標(biāo)準(zhǔn)補(bǔ)齊各元素(30%B-MN);方案5,將基礎(chǔ)日糧中微量元素?fù)Q算成有效含量,用蛋氨酸螯合鹽按NRC推薦量補(bǔ)齊各元素(假設(shè)螯合鹽的效價(jià)為硫酸鹽的150%)(30%B-ON)。試驗(yàn)期15周,試驗(yàn)動(dòng)物自由采食和飲水。檢測(cè)基礎(chǔ)日糧中4種微量元素含量,記錄和觀測(cè)銅鐵鋅錳添加方案對(duì)蛋雞生產(chǎn)性能、雞蛋品質(zhì)、養(yǎng)分表觀利用率的影響。結(jié)果表明,飼料原料批次相同的基礎(chǔ)日糧中微量元素的含量差異不顯著,飼料原料批次不同的基礎(chǔ)日糧中微量元素含量差異極顯著(P0.01);采食量、料蛋比、產(chǎn)蛋率、破蛋率、蛋重、蛋殼顏色、蛋形指數(shù)、哈氏單位、蛋黃顏色、蛋黃和蛋清中4種微量元素含量各處理間均無顯著差異(P0.05);試驗(yàn)6-10周方案3死淘率顯著低于方案1、方案2(P0.05),試驗(yàn)6-10周方案4蛋殼強(qiáng)度顯著大于方案1、方案5(P0.05),試驗(yàn)1-5周方案2、3、4蛋殼厚度極顯著大于方案1(P0.01);各方案間能量、粗蛋白、磷的表觀利用率差異不顯著,整個(gè)試驗(yàn)期方案4鈣元素表觀利用率極顯著高于其它各方案(P0.01)。本研究表明,飼料原料批次不同的基礎(chǔ)日糧中微量元素含量變異很大;以基礎(chǔ)日糧中實(shí)測(cè)微量元素含量占NRC推薦量倍數(shù)最大者為標(biāo)準(zhǔn),將其余3種元素按此倍數(shù)補(bǔ)齊的添加方案有助于改善蛋雞死淘率;將基礎(chǔ)日糧中微量元素含量換算成有效含量,以NRC推薦量為標(biāo)準(zhǔn)補(bǔ)齊各元素的添加方案有助于改善蛋殼強(qiáng)度、厚度以及鈣元素的表觀利用率。
[Abstract]:The purpose of this experiment was to study the effects of copper, iron, zinc and manganese supply on the performance, egg quality and apparent utilization of nutrients of laying hens, and to explore the best scheme of adding trace elements to the actual production of laying hens. In the experiment, 540 roman brown shell hens of 25 weeks old were randomly divided into 5 treatments (schemes), 6 replicates per treatment and 18 layers per replica. During the whole trial period, 5 batches of basal diets were prepared, and 5 batches of basal diets came from different batches, and 5 groups of basal diets from the same batches. Scheme 1, the basal diet without four trace elements was fed with (B); scheme 2, and the content of trace elements in the basal diet was not taken into account. According to the recommended amount of NRC (1994), (B N); scheme 3 was added directly. The measured trace element content in the basal diet accounted for the largest multiple of the recommended amount of NRC. The remaining 3 elements are added at this multiple (B-MN), and the content of trace elements in the base diet is converted into effective content (assuming that the biological titer of trace elements in the base diet is 30 and the default NRC recommended amount is effective). The recommended amount of NRC is standard complementary elements (30%B-MN), and scheme 5 is to convert trace elements into effective contents in the basal diet. Methionine chelate was used to supplement the elements according to the recommended amount of NRC (assuming that the titer of chelate was 150% of sulfate) (30%B-ON). The experiment period was 15 weeks. The animals were fed and drank freely. The effects of copper, iron, zinc and manganese supplementation on performance, egg quality and apparent nutrient utilization of laying hens were investigated. The results showed that there was no significant difference in the content of trace elements in the basal diet with the same batches of feed raw materials, but there were significant differences in the contents of trace elements in the diets with different batches of feed raw materials (P0.01), the feed intake, the ratio of feed to egg, the laying rate, the egg breaking rate and the egg weight. Eggshell color, egg shape index, Hardy unit, yolk color, There was no significant difference in the contents of four trace elements in yolk and egg white among the treatments (P0.05), and the death rate of scheme 3 was significantly lower than that of scheme 1 and scheme 2 (P0.05) at 6-10 weeks, and the eggshell strength of scheme 4 of test 6-10 weeks was significantly higher than that of scheme 1, plan 5 (P0.05), trial 1-5 weeks. The thickness of eggshell was significantly larger than that of scheme 1 (P0.01). There was no significant difference in apparent utilization ratio of crude protein and phosphorus. The apparent utilization ratio of calcium was significantly higher than that of other schemes in the whole trial period (P0.01). The results showed that the content of trace elements in the basal diet with different batches of feed raw materials varied greatly, and the content of trace elements measured in the basal diet accounted for the largest multiple of the recommended amount of NRC. The addition scheme of adding the remaining three elements according to this multiple is helpful to improve the dead scouring rate of laying hens, the trace element content in the basal diet can be converted into the effective content, and the adding scheme using the recommended amount of NRC as the standard to supplement each element will help to improve the eggshell strength. Thickness and apparent utilization of calcium.
【學(xué)位授予單位】：西北農(nóng)林科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S831.5
本文編號(hào)：2189758
[Abstract]:The purpose of this experiment was to study the effects of copper, iron, zinc and manganese supply on the performance, egg quality and apparent utilization of nutrients of laying hens, and to explore the best scheme of adding trace elements to the actual production of laying hens. In the experiment, 540 roman brown shell hens of 25 weeks old were randomly divided into 5 treatments (schemes), 6 replicates per treatment and 18 layers per replica. During the whole trial period, 5 batches of basal diets were prepared, and 5 batches of basal diets came from different batches, and 5 groups of basal diets from the same batches. Scheme 1, the basal diet without four trace elements was fed with (B); scheme 2, and the content of trace elements in the basal diet was not taken into account. According to the recommended amount of NRC (1994), (B N); scheme 3 was added directly. The measured trace element content in the basal diet accounted for the largest multiple of the recommended amount of NRC. The remaining 3 elements are added at this multiple (B-MN), and the content of trace elements in the base diet is converted into effective content (assuming that the biological titer of trace elements in the base diet is 30 and the default NRC recommended amount is effective). The recommended amount of NRC is standard complementary elements (30%B-MN), and scheme 5 is to convert trace elements into effective contents in the basal diet. Methionine chelate was used to supplement the elements according to the recommended amount of NRC (assuming that the titer of chelate was 150% of sulfate) (30%B-ON). The experiment period was 15 weeks. The animals were fed and drank freely. The effects of copper, iron, zinc and manganese supplementation on performance, egg quality and apparent nutrient utilization of laying hens were investigated. The results showed that there was no significant difference in the content of trace elements in the basal diet with the same batches of feed raw materials, but there were significant differences in the contents of trace elements in the diets with different batches of feed raw materials (P0.01), the feed intake, the ratio of feed to egg, the laying rate, the egg breaking rate and the egg weight. Eggshell color, egg shape index, Hardy unit, yolk color, There was no significant difference in the contents of four trace elements in yolk and egg white among the treatments (P0.05), and the death rate of scheme 3 was significantly lower than that of scheme 1 and scheme 2 (P0.05) at 6-10 weeks, and the eggshell strength of scheme 4 of test 6-10 weeks was significantly higher than that of scheme 1, plan 5 (P0.05), trial 1-5 weeks. The thickness of eggshell was significantly larger than that of scheme 1 (P0.01). There was no significant difference in apparent utilization ratio of crude protein and phosphorus. The apparent utilization ratio of calcium was significantly higher than that of other schemes in the whole trial period (P0.01). The results showed that the content of trace elements in the basal diet with different batches of feed raw materials varied greatly, and the content of trace elements measured in the basal diet accounted for the largest multiple of the recommended amount of NRC. The addition scheme of adding the remaining three elements according to this multiple is helpful to improve the dead scouring rate of laying hens, the trace element content in the basal diet can be converted into the effective content, and the adding scheme using the recommended amount of NRC as the standard to supplement each element will help to improve the eggshell strength. Thickness and apparent utilization of calcium.
【學(xué)位授予單位】：西北農(nóng)林科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S831.5
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
1 呂其昌,安汝義,李紹鈺,祁凌云,鄭錫武;區(qū)域性飼料中微量元素含量盈缺判定的研究[J];飼料工業(yè);1998年07期
2 仲飛,李秀錦,馬建軍,常學(xué)東;雞不同組織中銅、鋅、鐵、錳含量及相關(guān)性分析[J];河北農(nóng)業(yè)技術(shù)師范學(xué)院學(xué)報(bào);1997年01期
3 李慧芳,陳寬維,張學(xué)余;不同雞種微量元素鐵、錳、銅、鋅含量比較[J];動(dòng)物科學(xué)與動(dòng)物醫(yī)學(xué);2003年08期
，本文編號(hào)：2189758
本文鏈接：http://sikaile.net/yixuelunwen/dongwuyixue/2189758.html
最近更新
教材專著
