雏鸡无鱼粉日粮饲喂效果

选用15日龄健康、体重相近的巴布考克B380蛋用雏鸡200只,随机分为试验组和对照组,分别饲喂有鱼粉日粮和无鱼粉日粮,研究两种日粮对雏鸡生长性能的影响。结果表明,两组间在均匀度、成活率、体重、胫长等指标没有显著性差异(P>0.05)。证明无鱼粉日粮饲喂蛋用雏鸡是可行的。     

低鱼粉、无鱼粉与含鱼粉日粮对北京鸭饲喂效果的观察

~~低鱼粉、无鱼粉与含鱼粉日粮对北京鸭饲喂效果的观察@白涛$阿城市畜牧总站!黑龙江阿城150300 @关宇红$阿城市畜牧总站!黑龙江阿城150300     

用无鱼粉日粮饲喂蛋种鸡

通过对罗曼蛋鸡父母代采用无鱼粉日粮和有鱼粉日粮的对比饲养试验，在饲养日产蛋率、种鸡淘死率、种蛋破损率、种蛋受精率、受精蛋孵化率及受精蛋中死率等六个指标上，无鱼粉日粮和有鱼粉日粮差异不显著，无鱼粉日粮比有鱼粉日粮的成本每公斤降低0.20元，完全可以采用无鱼粉日粮饲喂蛋种鸡。     

蛋鸡饲喂无鱼粉日粮的试验

蛋鸡饲喂无鱼粉日粮的试验曾慰玉，侯仲锥，薛南山永安市畜牧兽医站３６６０００无鱼粉配合饲料在饲料工业发达国家，六十年代就已应用于生产。我国近年来开始研究应用，并有试验报道，但其结果不尽相同。为此，我们在永安市某鸡场进行了蛋鸡饲喂无鱼粉日粮的试验，现将试...     

绿豆蛋白粉配制无鱼粉蛋鸡日粮试验

为了筛选出绿豆蛋白粉无鱼粉蛋白粮,针对鱼粉,绿豆蛋白粉的营养特点及生产中使用的啼蛋白粉无鱼粉蛋鸡日粮的特点,通过添加蛋氨酸,多维素,酵母粉等设计了含绿豆蛋白粉分别为８％,１０％和１３％的无鱼粉日粮对２５２０只２６０日龄商品代海赛克期产蛋鸡进行６０天三重复饲喂对比试验。结果表明：含１０％绿豆蛋白粉无鱼粉日粮与喂含８％和１３％绿豆蛋白粉无鱼粉日粮相比为最佳日粮,平均产蛋率差异显著,分别高出０．７５和０     

无鱼粉日粮在高产蛋鸡饲养中的饲喂试验

依据多年的饲料生产及饲养经验,经当地生产的蒸制骨粉、菜籽饼等代替进口鱼粉配制高产蛋鸡日粮,从而降低饲料成本９．６６％,提高产经５．１５％,生产每千克蛋节约饲料１７０ｇ,饲喂效果显著。     

不同品种肉鸡不同阶段应用无鱼粉日粮的研究

为了探索无鱼粉日粮在不同品种肉鸡日粮中应用的可能性,本研究用“理想蛋白质”概念,以可消化氨基酸为基础,为新兴黄鸡,ＡＡ白鸡,乌骨鸡三个品种的各生长阶段设计出一系列的无鱼粉日粮和鱼粉日粮配方。从１９９５年－１９９７年止约３年时间进行了各品种各阶段无鱼粉日粮和鱼粉日粮的对比试验,累计共进行了１２次养殖试验。     

亚麻饼在养鸡业中的应用

亚麻俗称胡麻 ,是华北和西北地区主要油料作物之一。亚麻籽榨油后的饼粕内含多量蛋白质等营养成分 ,我国年产 3 0多万ｔ,除可用作肥料外 ,在养殖业中多用来饲喂反刍家畜。1　亚麻饼的营养价值亚麻饼是优良的植物蛋白饲料 ,含可消化能1 0 45～ 1 2 54ＭＪ/ｋｇ、粗蛋白质 3 3 %左右 ,其微量元素铜、锰、铁、锌、钼含量与鱼粉没有明显差异 ,而硒含量显著低于鱼粉。由于亚麻饼中含氰氢酸毒性物质以及亚麻籽胶、ＶＢ6 拮抗因子 ,并缺乏赖氨酸 ,饲喂过多或长期饲喂影响动物生长性能 ,故未能在养鸡业中得到广泛应用。近年来由于动物性蛋白饲料如…     

酶在菜籽粕日粮中的应用研究进展

本文分析了在菜籽粕日粮中使用非淀粉多糖(NSP)酶、α-半乳糖苷酶、植酸酶、蛋白酶和淀粉酶等的必要性,并对这些酶在菜籽粕日粮中的作用机理及作用效果进行了概述,旨在为消除菜籽粕中的抗营养因子,提高菜籽粕在畜禽日粮中的应用比例及其营养价值提供一种可行的方法。     

鸡肉粉和肉骨粉替代鱼粉对鲤鱼生产性能影响研究

近年来,我国水产养殖以每年近1 0 %的速度递增,进口鱼粉的供应量和价格对水产饲料及水产养殖具有极大的影响。从营养组成和消化率来看,鱼粉属优质动物蛋白质,但世界鱼粉的供应量将日益紧缺,寻求鱼粉替代动物蛋白质是我国水产业未来发展的一个重要研究方向。鸡肉粉和肉骨粉作为动物蛋白质原料,若能在水产饲料中替代鱼粉,将有重大的经济意义。我们通过饲养试验比较进口肉骨粉与鸡肉粉替代不同比例鱼粉对鲤鱼生产性能的影响,同时研究合成AA的添加效果,从而探讨肉骨粉与鸡肉粉替代鱼粉的适宜水平,为生产和科研积累应用资料。1　材料与方法1 1…     

Sunflower seed meal as a substitute for soybean meal in commercial broiler chicken diets

1. An experiment was conducted to study the possibility of replacing soybean meal (SBM) with sunflower seed meal (SFM) in broiler chick diets. The SBM in broiler starter (317.9 g/kg) and finisher (275.4 g/kg) diets was replaced with SFM at 33, 67 and 100% on an iso-caloric and iso-nitrogenous basis using sunflower oil to balance the energy content of the diets. The metabolisable energy levels used in the diet were considerably less than the recommended levels for broilers. Each experimental diet was fed ad libitum from 2 to 42 d of age to 8 replicates of 5 birds. Parameters studied included amino acid and apparent metabolisable energy contents in food ingredients, body weight, food intake, food efficiency, leg abnormality score, dry matter digestibility, carcase traits, relative weight and length of intestine, fat and protein content in liver and serum biochemical profile. 2. SFM had higher concentrations of calcium, phosphorus, methionine and cystine and lower energy content than SBM. 3. Replacement of SBM with SFM up to 67% in starter and 100% in finisher diets did not affect weight gain. Total and 67% replacement of SBM with SFM depressed food efficiency at 21 and 42 d of age, respectively. Food intake was significantly higher in SFM-based diets than in the SBM reference diet at 21 and 42 d of age, except in groups given SFM100 at 21 d of age. In the latter group, the food intake was similar to that on the SBM reference diet. The digestibility of dry matter decreased with increased levels of SFM in the diet. 4. The relative weights of giblet, liver and abdominal fat, length of intestine, activity of alkaline phosphatase, concentrations of calcium and inorganic phosphorus in serum were not influenced by incorporation of SFM in the broiler diet. 5. The ready to cook yield and liver fat content decreased, while the relative weights of gizzard and intestine and protein content in liver increased, with increasing levels of SFM in the diet. 6. The concentration of HDL cholesterol increased while the concentration of LDL cholesterol decreased with increasing content of SFM (> or =67% of SBM) in diet. The serum protein concentration decreased progressively with increase in dietary SFM. The concentrations of protein and triglycerides in serum were lowest in groups receiving SFM100. 7. Body weight gain was not affected by total replacement of SBM with SFM at 42 d of age. However, considering food efficiency, carcase yields, serum lipid profile and level of supplemental fat in diet, it is concluded that SFM can replace up to two-thirds of soybean, corresponding to inclusion of 345 and 296 g SFM per kg for starter and finisher phases, respectively.     

鸡包涵体肝炎病理形态学观察

鸡包涵体肝炎 ( IBH)患鸡主要表现为肝脂肪变性和肝细胞内包涵体形成为特征的一种鸡腺病毒感染症。 1 980年以后我国辽宁、河北、山东、内蒙古呼和浩特市区先后有该病发生的报道。 1 997年河北省呈地方性流行。我们对该病进行了系统的病理形态学观察。1　材料与方法被检病例取自河北省 5个县市 1 7家养鸡场的发病鸡群 ,进行了流行病学调查、临床症状观察、细菌学、病理学检验。采集自然死亡病鸡肝脏、胸腺、脾脏、肾脏、法氏囊等病理材料 ,Bouin氏液固定 ,常规石蜡包埋、切片、苏木素—伊红、亚甲蓝伊红染色、光学显微镜检查。2　结果2 .1…     

棕榈粕在蛋鸡日粮中的应用研究

400只40周龄伊莎褐蛋鸡随机分成5组,每组设4个重复,共20个重复(栏),进行为期8周的试验,考察棕榈粕及和美效素对产蛋高峰期蛋鸡生产性能的影响。结果表明,1)在产蛋高峰期蛋鸡日粮中棕榈粕的适宜添加量为6%～10%,可改善蛋鸡的产蛋率、个蛋重、料蛋比、破畸率及经济效益。2)添加10%棕榈粕和500g/t和美效素可改善蛋鸡的料蛋比、破畸率和经济效益。     

酵母蛋白粉替代肉鸡日粮中鱼粉的效果研究

选用1日龄AA肉鸡600羽随机分成5组,每组设6个重复,每个重复20羽,分别饲喂鱼粉对照日粮和用酵母蛋白粉等能等蛋白替代对照日粮中25%、50%、75%和100%鱼粉的试验日粮,研究用活性酵母蛋白粉替代鱼粉作为蛋白源对肉鸡生长性能以及养分利用率的影响。结果表明:100%替代组的后期增重较对照组提高0.84%(P>0.05),100%替代组的后期及全期料重比较对照组降低2.20%和1.56%,但差异均不显著(P>0.05)。各组之间营养物质的利用率差异不显著(P>0.05)。100%替代组可以降低饲料成本和增重成本。酵母蛋白粉替代肉鸡日粮中的鱼粉是可行的。     

苜蓿草粉在仔猪日粮中的应用

选取杜×长×大三元杂交仔猪60头作为试验动物,研究日粮中添加苜蓿草粉对仔猪腹泻、生产性能及营养物质消化率的影响。结果表明,日粮中加入5%苜蓿草粉,对仔猪的日增质量、日采食量和饲料营养物质消化率没有产生不利的影响,并能非常有效地防止仔猪腹泻,在断奶后1周内可极显著提高仔猪的增质量。     

Evaluation of meat meal, chicken meal, and corn gluten meal as dietary sources of protein in dry cat food

The nutritional value of meat meal (MM), chicken meal (CM), and corn gluten meal (CGM) as dietary sources of protein in dry food formulated for adult cats was evaluated. Twelve healthy adult cats (11 males and 1 female) were used. Dry diets containing MM, CM, or CGM as the main protein source were given for a 3-week period in a 3 x 3 Latin-square design. Digestion and balance experiments were conducted during the last 7 d of each period. In addition, freshly voided urine was taken to determine urinary pH and number of struvite crystals. As compared with the CM diet, dry-matter digestibility was higher and lower for the MM and CGM groups, respectively. Percentages of nitrogen (N) absorption and N retention to N intake were higher in the MM group, and N utilization was not different between the CM group and the CGM group. All cats excreted alkaline urine (pH > 7). Urinary pH, struvite activity product, and number of struvite crystals in urine were lower for the CGM group. There was no difference in retention of calcium and magnesium among the groups. From the point of view of digestibility and N utilization, MM is superior to CGM, and CM is better than or equivalent to CGM as a protein source of dry foods for adult cats. However, when CM is used as a dietary protein source, some manipulation of dietary base excess may be needed to control urinary acid-base balance, because CM contains higher calcium and phosphorus.