诺亚生态技术在养猪生产中的应用效果

随着人民生活水平的提高,消费者对肉类产品的要求越来越高.畜产品的市场供给关系已从过去的满足型向目前的健康型和风味型过渡,药物残留、抗生素超标已成为消费者普遍关注的问题.有鉴于此,浙江绿原生物技术开发有限公司引入了"诺亚生态"技术,并在浙江省的部分猪场进行全程使用.该项技术的关键--微生态反应器,获国家专利(专利号:00251019.7),并列入了重大技术创新项目、火炬计划项目和北京市高新技术成果转化项目.目前浙江省已有多家养殖企业在全面使用.从使用情况看,该技术在降低饲料成本、改善养殖环境、预防仔猪腹泻、减少药物使用等方面,确有独特的功效.     

稀宝促长剂饲喂生长肥育猪效果试验

稀土在农业中的应用已从种植业进入养殖业,稀土饲料添加剂开始进入生产和应用领域。许多试验资料表明：稀土对动物具有明显的促生长作用,特别是在哺乳、断奶仔猪方面的应用报导较多,但对生长肥育猪的促长效果和保健作用的报导尚不多。特别是多复合稀土作添加剂的饲喂试验更是少见,为了探讨这个问题,我们进行了生长肥育猪阶段的对比试验,现报道如下。１　材料与方法１．１　材料１．１．１　稀宝：由湖南华大饲料有限公司科技部研制并提供。１．１．２　生长肥育猪：湖南农大动科院科研种猪场和湖南湘潭砂子岭养殖专业户提供的健康无病…     

普乐宝在育肥猪日粮中的应用效果

选择６０头断奶仔猪进行了１３５天的应用对比试验,结果日粮中添加０．２３％普乐宝的试验组,日增重,饲料报酬率和利润分别比对照组高９．５９％,７．２５％,３６．２％差异均极显著（Ｐ〈０．０１）,头均增收４０．５４元,投入产出比为１：４．０,说明添加普东宝能提高育肥猪的生产性能,增加经济效益。     

抗痢宝在犊牛培育中的应用效果

抗痢宝在犊牛培育中的应用效果东北农业大学动物科学系张永根，姜范柒，庞明波近年来，由于抗生素存在残留和抗药性等问题，其作为饲料添加剂受到了严格的限制。在这种情况下，无毒副作用、无残留和抗药性，又不污染环境的新型微生物饲料添加剂应运而生，而且发展前景十分...     

“三九猪宝”添加剂在肉猪生产上应用试验

“三九猪定”是广东惠州三九新兽药开发有限公司新开发的纯中药合成药物助长剂。我们吕巷镇兽医站在松隐畜牧总场进行了“三九猪宝”在肉猪生产上的应用试验。1材料与方法1．1饲料添加剂：三九猪宝，批号：960518004。1．2基础口粮：试验组和对照组基础口粮相同，试验组日粮中添加4‰的三九猪宝，对照组不添加。1．3试验猪选择和饲养管理：试验选用约×枫二元杂交肉猪，体重在30kg左右、健康、日龄相近的48头猪，随机分成试验组与对照组。试验组32头，对照组16头，组间体重差异不显著（P＞0.05）。试验猪舍条件相同，其它管理相同。时间为1…     

猪宝灵的开发和应用

猪宝灵是国内最新研制的一种纯化的复合促性腺激素，为探讨其稳定性，可靠程度和实际应用技术的价值，已开展了多方面研究工作，本文为其工作之一。     

香辣宝在断奶仔猪饲料中的应用效果

选择杜.长大断奶仔猪54头,随机分成三组,每组两个重复,每个重复9头。在基础日粮相同情况下,试验一组每吨添加香辣宝150g;试验二组添加香辣宝125g;对照组添加10%效美素100g、10%抗敌素150g。结果表明,日粮中添加125g香辣宝对仔猪生长性能(平均日增重、平均日采食量、腹泻率、饲料转化率)虽没有明显影响(P>0.05),但香辣宝作为大自然辛辣芳香草本提取物确能起到抗菌促生长作用。     

母猪繁殖中的几种重要的维生素

论述了β－胡萝卜素和VA、VE、叶酸、核黄素、生物素等几种重要维生素对母猪繁殖性能的影响。研究表明，在母猪日粮中添加上述维生素，能降低胚胎和仔猪死亡率，显著提高产仔数，从而改善母猪的繁殖性能。     

早期断奶对猪生产性能的影响

通过综述早期断奶对仔猪的消化吸收和免疫抗病,对母猪的发情、受胎、产仔以及繁殖寿命的影响,提示在研究和应用早期断奶技术时,要充分遵循生物学规律,才能取得最大限度的经济效益。     

Effect of long-term application of SUISYNCHRON-premix on swine

Two groups of five female store pigs, weighing an average of 60 kg at the start of the experiment, were given either 1 or 10 mg metallibure zinc complex (SUISYNCHRON) per kg body weight once daily for six months, in the form of a 2% talcum premix added to concentrates. Clinical inspection, weight gain, haematological findings, blood sugar, serum transaminases, properties of urine and faeces, carcass examination and histological study (internal organs, endocrine glands, skeletal muscle) showed that the 1 mg/kg dosage had no toxic effect. The 10 mg/kg dosage resulted in considerable depression in appetite and some apathy in the pigs, but there was no evidence of a toxic effect.     

Effect of streptozotocin-induced diabetes in primiparous swine on subsequent reproductive performance

A follow-up study was conducted to determine the effects of streptozotocin-diabetes during the first parity on subsequent reproductive performance of sows. Only in the first parity, two doses of streptozotocin (50 and 100 mg/kg body weight) were administered to two groups of pregnant gilts at 80 d of gestation; a third group of gilts served as a control. Second-parity reproductive performance showed that gestation length, placental weight, mean birth weight of the litter, litter size and number of pigs born alive were not affected (P greater than .05) by maternal diabetes. Maternal serum glucose and fructose were greater (P less than .01) in high-dose sows than in the low-dose and the control dams. Serum free fatty acids (FFA) were higher (P less than .05) in high-dose dams than in control dams at d-1 and d 112 of gestation; no differences were observed between the high-dose and the low-dose during the same period. Liver and kidney weight, as well as DNA and RNA content, were greater (P less than .01) in pigs from high-dose dams than in those of the other treatments. Liver protein was elevated (P less than .01) in the progeny of high-dose dams. Dry matter and percent lipid were higher (P less than .05 and P less than .01, respectively), in pigs from high-dose sows than those from other treatment. Serum glucose, fructose and FFA of piglets were not affected by previous treatment of the dam.(ABSTRACT TRUNCATED AT 250 WORDS)     

低蛋白日粮对猪肠道健康与生长性能的影响

与传统玉米-豆粕型日粮相比,在不影响猪生长性能的前提下,低蛋白日粮具有节约蛋白原料、减少氮排放、降低饲料成本及猪舍内氨气和硫化氢等有毒有害气体浓度等优点。随着国际贸易摩擦频繁、环保要求日渐严格和2020年7月1日饲料无抗的实施,低蛋白日粮已成为现代规模化养猪生产中日粮营养供应发展的必然趋势。因此,文章将从低蛋白日粮设计的理论基础以及对猪肠道健康和生长性能的影响进行简要综述,为低蛋白日粮的科学推广与应用提供参考与依据。     

Effect of various levels of avilamycin on the performance of growing-finishing swine

A series of 12 trials involving 1,710 crossbred pigs was conducted at eight geographical locations in the United States to determine the effect of avilamycin on average daily gain (ADG), average daily feed (ADF) and feed-to-gain ratio (F/G) of growing-finishing swine. Eight of 12 trials evaluated avilamycin concentrations at 0, 5, 10, 20, 40 and 60 ppm, while an additional four trials evaluated avilamycin concentrations at 0, 10, 20 and 40 ppm in swine grower and finisher diets fed ad libitum. All trials were conducted using a randomized complete block design with data from the 12 trials pooled for statistical analysis. Pigs fed 5, 10, 20, 40 or 60 ppm avilamycin had increased (P less than .05) ADG over control pigs. No differences were detected for ADF between control and avilamycin-fed pigs. Pigs fed 10, 20, 40 or 60 ppm avilamycin had improved (P less than .05) F/G over control animals. Average daily gain, ADF and F/G for pigs fed 0, 5, 10, 20, 40 or 60 ppm avilamycin were: 749, 763, 767, 769, 771 and 771 g; 2.38, 2.40 2.39, 2.41, 2.38 and 2.38 kg; and 3.17, 3.15, 3.12, 3.13, 3.09 and 3.09, respectively. Linear plateau procedures showed that the effective dose range of avilamycin for the growing-finishing phase is 5 to 10 ppm for improving ADG and 10 to 60 ppm for improving F/G.     

Effect of magnesium mica on performance and carcass quality of growing-finishing swine

A total of 240 crossbred pigs were used in two experiments to determine the effect of feeding magnesium mica (MM) during the growing-finishing period on animal performance and pork carcass characteristics. All pigs were blocked by weight, and treatments were assigned randomly to pens (five pigs/pen) within blocks. In each experiment, eight pens were allotted randomly to one of three treatments: 1) a negative control corn-soybean meal starter, grower, and finisher diet devoid of supplemental magnesium; 2) the control diets supplemented with 1.25% MM; and 3) the control diets supplemented with 2.50% MM. In Exp. 1, pigs were slaughtered at the University of Arkansas Red Meat Abattoir, whereas pigs in Exp. 2 were transported to a commercial pork packing plant and slaughtered according to industry-accepted procedures. In both experiments, dietary supplementation of MM had no (P > .10) effect on ADG, ADFI, or gain:feed ratio at any phase during the growing-finishing period. In Exp. 1, MM supplementation had no (P > .10) effect on carcass fatness or muscling. Moreover, Japanese color scores were not (P > .10) affected by feeding pigs MM; however, American color scores increased linearly (P < .01) with increasing levels of MM in the diet. Although MM supplementation did not (P > .10) affect L* and b* values for the longissimus muscle (LM), there was a linear increase (P < .05) in LM a* and chroma values associated with increased MM levels in swine diets. In Exp. 2, carcasses from pigs fed 1.25% MM had less (P < .05) fat opposite the LM at the 10th rib than untreated controls and pigs fed 2.50% MM and higher (P < .10) percentages of muscle than carcasses of untreated controls. Moreover, the LM from pigs fed 1.25% MM was less (P < .05) red and less (P < .05) yellow than the LM from pigs fed the control or 2.50% MM-supplemented diets. Drip loss from the LM was unaffected (P > .10) by inclusion of MM in the diet. Results from this study confirm that inclusion of MM, an inexpensive, inorganic magnesium source, in diets of growing-finishing swine has beneficial effects on pork carcass cutability and quality with no deleterious effects on live animal performance.     

Effect of supplemental manganese on performance and carcass characteristics of growing-finishing swine

Three hundred sixteen crossbred pigs were used in two experiments to determine the effect of supplemental manganese source and dietary inclusion level during the growing-finishing period on performance and pork carcass characteristics. All pigs were blocked by weight, and treatments were assigned randomly to pens within blocks. In Exp. 1, a total of 20 pens (five pigs/pen) was randomly assigned to one of five dietary treatments consisting of control grower and finisher diets, or control diets supplemented with either 350 or 700 ppm (as-fed basis) Mn either from MnSO4 or a Mn AA complex (MnAA). In Exp. 2, a total of 36 pens (six pigs per pen) was assigned randomly to one of six dietary treatments formulated with 0, 20, 40, 80, 160, or 320 ppm (as-fed basis) Mn from MnAA. Pigs were slaughtered when the lightest block averaged 120.0 kg (Exp. 1) or at a mean BW of 106.8 kg (Exp. 2). Neither ADG nor ADFI was affected (P > 0.21) by Mn source or high inclusion level (Exp. 1); however, across the entire feeding trial, pigs consuming 320 ppm Mn from MnAA were more (P < 0.04) efficient than pigs fed diets formulated with 20 to 160 ppm Mn from MnAA (Exp. 2). Color scores did not differ (P > 0.79) at the low inclusion (20 to 320 ppm Mn) levels used in Exp. 2; however, in Exp. 1, the LM from pigs fed Mn tended to receive higher (P = 0.10) American color scores than that of pigs fed the control diet, and Japanese color scores were higher for the LM from pigs fed diets containing 350 ppm Mn from MnAA than 350 Mn from ppm MnSO4 or 700 ppm Mn from MnAA (source x inclusion level; P = 0.04; Exp. 2). Chops of pigs fed 350 ppm Mn from MnAA were darker than the LM of pigs fed 350 ppm Mn from MnSO4, and 700 ppm Mn from MnAA diets (source x inclusion level; P = 0.03; Exp. 1), but L* values were not (P = 0.76) affected by lower MnAA inclusion levels (Exp. 2). Even though the LM tended to became redder as dietary MnAA inclusion level increased from 20 to 320 ppm Mn (linear effect; P < 0.10), a* values were not (P = 0.71) altered by including 350 or 700 ppm Mn (Exp. 1). Chops of pigs fed MnAA had lower cooking losses (P = 0.01) and shear force values (P = 0.07) after 2 d of aging than did chops from pigs fed diets formulated with MnSO4. Results from these experiments indicate that feeding 320 to 350 ppm Mn from MnAA during the growing-finishing period may enhance pork quality without adversely affecting pig performance or carcass composition.