蛋鸡不同阶段营养调控

蛋鸡养殖期间不同生长发育阶段的营养需求有所差异,为更好地满足不同阶段蛋鸡的生长需求,应对饲料配方做出动态化调整,加强营养调控技术的研究。通过对饲料配方进行科学调整,能保证营养供给更加充足,更加均衡满足蛋鸡生长需求,保证蛋鸡健康生长,减少饲料成本,提高饲料利用效率。该文主要论述蛋鸡在不同生长阶段的营养调控技术,并提出完善蛋鸡营养调控技术的措施。     

Fe^2＋和Mn^2＋对水稻锌吸收与运转的影响

水培试验结果表明，Ｆｅ＾２＋、Ｍｎ＾２＋对水稻锌的吸收和运转有明显的影响。高浓度Ｆｅ＾２＋或Ｍｎ＾２＋（５μｇ／ｇ）显著降低水稻吸锌量、抑制锌由根向茎、叶的运转。稻株生物量与叶片Ｆｅ／Ｚｎ比值或Ｍｎ／Ｚｎ比值有明显折负相关关系，在叶片Ｆｅ／Ｚｎ〉８或Ｍｎ／Ｚｎ〉２６时，水稻生物量明显降低。造成水稻缺锌的主要原因是土壤有效锌含量低，而高浓度Ｆｅ＾２＋和Ｍｎ＾２＋是诱发和加重水稻缺锌的重要条件。因此在     

冬季饮食多吃酸 营养健康助保暖

<正>冬季,气温变化大,人容易感冒,提高免疫力就显得极为重要。而平时多吃些酸味食品,能有效提高人体对病菌的抵抗力。研究表明,口感酸的水果所含的维生素C往往比较多。100克酸枣就含900毫克的维生素C。此外,山楂、猕猴桃和沙棘果都含有丰富的维生素C。维生素C是一种强大的抗氧化剂,能防止细胞癌变     

Effects of Complex Nutritional Regulation Additives on Growth Performance,Slaughter Performance and Serum Biochemical Indexes of Grazing Sheep in Cold Season

This experiment was conducted to investigate the effects of complex nutritional regulation additives on growth performance, slaughter performance and serum biochemical indexes of grazing sheep in cold season.A single factor random block design was used and 48 grazing ewes with the average weight (28.01±1.70) kg and 7 months old were randomly divided into 4 groups:Group Ⅰ without supplement;Group Ⅱ with concentrate;Group Ⅲ with concentrate+complex formulation 1 (0.30% malic acid, 0.06% cysteamine, 0.08% saccharicterpenin);Group Ⅳ with concentrate+complex formulation 2 (0.60% malic acid, 0.12% cysteamine, 0.16% saccharicterpenin)with 3 replicates per group and 4 grazing ewes per replicate.The results showed that:①The final weight of group Ⅲ was the highest and higher than group Ⅱ and Ⅳ by 6.26% (P>0.05)、3.69% (P>0.05), respectively.The average daily gain of group Ⅲ was highest, and higher than group Ⅱ and Ⅳ by 26.32% (P<0.01)、5.74% (P>0.05) respectively.②Comparing with group Ⅱ, the slaughter rate of group Ⅲ was increased by 4.68% (P>0.05).Compared with groupⅠ, Ⅱ and Ⅳ, the meat percentage of group Ⅲ was increased 18.46% (P<0.05), 10.97% (P>0.05) and 4.40% (P>0.05), while the net meat weight of carcass in group Ⅲ was increased by 49.74% (P<0.01), 13.22% (P>0.05) and 18.27% (P<0.05), respectively.Compared with groupⅠ, Ⅱ and Ⅳ, the net meat rat of carcass in group Ⅲ was increased 10.42% (P<0.01)、6.00% (P>0.05) and 3.37% (P>0.05), respectively.③There was a rising trend as the order of groupⅠ, Ⅱ, Ⅳ and Ⅲ in serum glucose, Ca, P, HDL, LDL, GPT and IgG, while A/G and TG showed a decreasing trend.Based on the above results, in this trial, supplementing complex nutritional regulation additives had good effects on growth performance, slaughter performance and serum biochemical indexes of grazing sheep in cold season.And supplementing complex formulation group 1 (group Ⅲ) was the best.     

Research Advanced on Functions of Nutritional Regulation and Intestinal Barrier of Arginine

Arginine is one of the most important amino acids for animals,and participates in the synthesis and metabolism of many nutrients,plays a role in the development and function of the gastrointestinal tract.Intestinal barrier function is one of the most functions for intestine.The article will summarize the effect of arginine on intestinal barrier.It was explicated the influence on inteseinal immunity of Toll-like receptor.This research provided some references for further study of arginine regulation on animal production.     

种公猪的标准化饲养技术

饲养公猪的目的是为了满足配种的需要,营养物质是公猪产生精子、保持旺盛配种能力和维持公猪的生命活力的基础。种公猪管理的主要目标是使种公猪体质健壮,体况肥瘦适度,精力充沛,精液品质良好,保持旺盛的性欲,提高配种受胎率和种公猪的配种能力,公猪的健康状况直接影响到猪场发展。     

母羊妊娠期的饲养管理

做好母羊妊娠期的饲养管理工作对于肉羊的养殖十分重要,可以增强新生羔羊的体质,增加羔羊的初生重,减少初生羔羊的死亡率。妊娠期分为妊娠前期和妊娠后期,根据这两个期的不同特点及营养需求,有针对性的进行饲养管理,可以确保母羊的健康以及保证胎儿正常的生长发育,在母羊的妊娠期做妊娠母羊的保胎工作是关键。     

尿结石病羊饲料矿质元素(钙磷)分析

尿结石病是尿路中盐类结晶析出所形成的凝结物,嵌入泌尿道而引起尿道发炎,排尿机能障碍的一种疾病.近年来调查发现陕北地区养羊业中尿结石病的发病率逐渐增高.针对这一情况,本文从饲料成分分析入手研究该病的发病原因,用以指导农户对尿结石病的防治工作.许多资料显示饲料中钙,磷比例失调是可能引起尿石症的主要原因.此次实验对榆阳区马合镇养殖场常用饲料稻草、玉米粒、玉米秆、豆秆中钙、磷含量的测定结果显示:所测四种饲料中的钙磷含量及比例不合理可能是导致尿结石病的主要原因.     

雏鸡粪饲喂杜糯杂优猪效果试验

雏鸡粪烘干后营养价值较为全面,按10~15%比例添加到日粮中饲喂杜糯杂优猪与全程饲喂全价配合料增重效果差异不明显,但却能节约一定量的饲料,添加10~15%平均每头分别节约18.1 kg和49.6 kg饲料,经济效益显著,最佳添加比例为15%。高寒贫困山区在发展种养结合的生态养殖中,应变废为宝,达到环境整治、节本增效的目的。     

猪营养代谢病防控措施

对几种猪群发病率较高的营养代谢病进行了分析,了解其相关的诊断和治疗手段,为猪营养代谢病的防控提供参考。