强制补料地哺乳仔猪日增重的影响

哺乳仔猪９窝,随机分成３组,１组为人工强制补料,Ⅱ组为训练强制补料,Ⅲ组为诱食补料,试验表明,在哺乳期间,各组间日增重差异不显著。     

酒糟饲喂泌乳母猪对哺乳仔猪日增重的影响

选择 8头长白猪×荣昌猪杂一代母猪 ,分娩后随机分为两组 (试验组和对照组 ) ,每组哺乳母猪为 4头。试验组母猪在哺乳期用酒糟代替 5 0 %精料。试验结束时试验组仔猪比对照组仔猪日增重高 2 1 .5g,差异极显著 (P <0 .0 1 )。     

不同补铁剂对哺乳仔猪日增重和血红蛋白的影响

在初生仔猪的生长发育过程中,哺乳仔猪从母体和乳汁中获得的铁不能满足仔猪正常生长发育的需要。一周龄后,仔猪易患缺铁性贫血症,抗病力下降,生长发育缓慢。哺乳仔猪早期补铁,不仅能促进仔猪的生长发育,而且显著提高仔猪的成活率,增加经济效益。本试验是在湖北、天津、黑龙江、河南共４个省市中,选择科研基础好的猪场作为试区,研究不同补铁剂对哺乳仔猪平均日增重的影响,及补铁后（即１３日龄）血红蛋白含量变化。１　材料与方法１．１　供试药物补铁王－１００：江西民星企业集团兽药厂生产,批号为（９４）×００１００１,每毫…     

不同温度对仔猪日增重的影响

通过猪舍环境温度的控制将59窝（587头）初生仔猪（杜长大）随机分为高温组（20窝）29℃以上,常温组（19窝）20～29℃,低温组（20窝）5～14℃.其中低温组又设2个重复（每个重复10窝）.分别称取其初生、20日龄、35日龄、60日龄的个体平均重及窝重,进行显著性检验.结果证明,在适宜温度内,温度越高日增重越快.试验表明,不同环境对仔猪日增重存在着较大的影响.     

酵母元在妊娠哺乳母猪饲料中的应用试验

试验选取妊娠65d左右、产期相近的长大母猪12头，胎次为第2胎，随机分为2组，每组6头．乳猪出生7d后开始补料，35日龄断奶称重。试验研究了在妊娠及哺乳母猪日粮中使用酵母元饲料添加剂后，仔猪的初生窝重增加了22．71％，35日龄断奶窝重增加20．3％，仔猪头平均初生重增加11．9％，35日龄断奶重增加8．8％．仔猪的日增重提高了8．3％。     

提高日粮蛋白质和能量水平对哺乳母猪和仔猪生产性能的影响

选用分娩日期相近的长大母猪16头，按胎次、体重、膘情随机分成2个处理组，每组8个重复，哺乳母猪自由采食、饮水。2个处理组的日粮蛋白质水平分别为14.0%和18.0%，能量水平为12.46MJ/kg和13 58MJ/kg,试验期6周,分别于母猪分娩后0天、28天对母猪和仔猪称重，记录母猪和仔猪的采食量及仔猪发病情况。结果表明，提高哺乳母猪日粮中的蛋白质和能量水平，可明显降低仔猪哺乳期发病率并提高断奶窝重。     

酵母元在妊娠及哺乳母猪饲料中的应用试验

选取怀孕65天左右、产期相近的长大母猪12头,胎次为第二胎．随饥分为两组．每组6头,乳猪出生7天后开始补料．35日龄断奶称重。在妊娠及哺乳母猪日粮中使川酵母元饲料添加剂后,仔猪的初生窝重增加22．71％,35日龄断奶窝重增加20．3％,仔猪头平均初生重增加11．9％,35日龄断奶重增加8．8％．仔猪的日增重提高了8．3％。     

母猪日粮中添加腐敏酸钠对哺乳仔猪的影响

将临产的迪卡母猪16头分为两组，进行腐敏的饲喂试验，结果35日龄断乳体重提高0.42kg,0-35d日增重提高0.013kg,均有显著差异（P＜0．05）；试验组仔猪成活率提高2．61％，腹泻率下降11．0％；母猪食欲旺盛，粪便臭味减小。     

不同日龄补铁对仔猪日增重的影响

本试验通过对4、16和27日龄的仔猪肌肉注射补铁剂右旋糖酐铁注射液,对仔猪的体重进行测定。结果表明,仔猪在4日龄补铁后,在16日龄继续补第2次铁,仔猪增重效果最好。     

不同酸化剂对哺乳仔猪增重效果的影响

在哺乳期分别对约×互仔猪灌服不同酸化剂，进行２５天试验。结果：灌服乳香酸组、下边酸组与对照组相比，哺乳仔猪平均日增重分别提高４２．３０％（Ｐ＜０．０１）和降低３３．２６％（Ｐ＜０．０１），经济效益分别增长３６．５０％和下降３６．４８％。     

Factors associated with suckling piglet average daily gain

Low piglet weight at weaning implies a loss of income for the farmer and might influence the welfare of the affected animals negatively. The objective of our cohort study was to identify risk factors in the farrowing section associated with average daily weight gain (ADG) of piglets from birth to weaning. The study was done in 3 Danish farrow-to-finish herds and included 581 sows, 277 pens, 814 farrowings, and 8241 piglets. The data were analysed with a linear mixed model where the response was ADG, and sow and litter were random effects. Piglet treatments for arthritis (-38 g per day), diarrhoea (-8 g per day) and other infections (-21 g per day) were the major infectious contributors to lower ADG. Forelimb-skin abrasions on a piglet (-5 g per day), weak pasterns of sows on concrete slats (-34 g per day), suckling a sow with poor milking 3 weeks after farrowing (-14 g per day), low birth weight (-8.4 g per day per 100 g), male compared to female (-4 g per day) also were associated with lower ADG in the suckling period.     

精氨酸和精氨酸生素对母猪泌乳性能及哺乳仔猪生长性能的影响

为了研究精氨酸和精氨酸生素(AAA)对哺乳母猪泌乳及其仔猪生长性能的影响,试验选用体重和胎次相近的长×大母猪35头,随机分成5组,每组7个重复。对照组饲喂基础日粮,其余4组分别在饲喂基础日粮中添加0.8%精氨酸(Arg),0.03%、0.06%、0.09%AAA。正式试验于妊娠107 d开始,并于母猪生产时耳缘静脉采血分离血浆检测生化指标。试验结果表明,Arg组相对于其余各组显著提高了21日龄仔猪断奶窝重(P<0.05)和日均泌乳量(P<0.05);0.03%AAA组相对于对照组有提高仔猪断奶窝重和断奶均重的趋势(0.05相似文献   

浅谈哺乳仔猪的培育措施

由于仔猪有许多和成年猪、生长猪生理特点上的不同之处,所以不能用饲养成年猪的方法饲养仔猪.从猪场经营的角度看,仔猪培育的好坏直接关系到猪场的经济效益.从个体发育角度看,仔猪阶段的生长性能对以后的生产性能有很大的影响.因此,在哺乳仔猪阶段要从以下6个方面加以注意并采取措施,以保证仔猪的健康生长和快速增重.     

Effects of teat position on selected milk components of primiparous sows during lactation

The composition of sow colostrum and milk from single teats were characterized in 20 primiparous German Landrace sows at ten points throughout lactation time (after birth of the first piglet, and subsequently at 12 and 24 h, 3, 5, 7, 14, 21, 28 and 35 d postpartum). In these samples contents of protein, IgG, lactose and fat were analyzed. In the first 3 days of lactation protein- and IgG-contents drastically decreased, on the other hand the levels of energy resources lactose and fat increased. Significant effects of the single teat and the teat pair on the content of protein at farrowing and 12 h later as well as on the contents of IgG and lactose 12 h postpartum were found. The highest contents of protein and IgG were analyzed in colostrum of teats in the median udder section, the colostrum of cranial teats had the highest content of lactose. At days 3 and 5 of lactation milk showed large coefficients of variation (cv) in milk composition from teat to teat as well as from sow to sow (intraindividual cv: protein: 22%, IgG: 45%, lactose: 20%, fat: 34%; interindividual cv: protein: 36%, IgG: 85%, lactose: 27%, fat: 47%). During lactation period the intraindividual variation of milk parameters was lower than the interindividual variation. Possible reasons for these results are discussed.     

Effects of suckling intensity on milk yield and piglet growth from lactation-enhanced gilts

The effects of suckling intensity on milk yield and piglet growth were determined when lactation capacity of the sow was enhanced through overexpression of a mammary-specific transgene, bovine alpha-lactalbumin. Lactational response to increased suckling stimulation was determined by fostering litters of the same age (d 1) or 7 d older (d 7) than the day of lactation to sows nontransgenic (control) or transgenic (TG) for bovine alpha-lactalbumin. Twenty first-parity gilts were allocated to 4 treatments dependent on gilt genotype and age of litter fostered (control d 1, control d 7, TG d 1, and TG d 7). Litters were standardized to 10 piglets within 24 h postpartum, and nonbirth piglets were fostered to gilts with an equal litter BW within age groups at 36 h postpartum. Milk yield was determined by the weigh-suckle-weigh method on d 6, 9, 12, 15, and 18 of lactation. Mean daily milk yield was greater (P = 0.031) for TG gilts compared with control gilts and tended to be greater (P = 0.056) for all gilts with d-7 piglets compared with those with d-1 piglets. Daily milk yield of TG d 7 gilts increased rapidly to peak at d 9 and was greater than milk yield of all control gilts at d 9 (P < 0.01), 12 (P < 0.02), and 15 (P < 0.02). Mean daily milk yield of TG d 7 gilts was 2.1 kg greater (P = 0.002) than for control d 7 gilts and 2.0 kg greater (P = 0.004) than for TG d 1 gilts. Daily milk yield of control d 1 gilts was not different from that of TG d 1 gilts (P = 0.49) or control d 7 gilts (P = 0.63). Piglet BW gain between d 3 and 6 was greater (P < 0.01) in the TG d 7 group than for all other groups and was greater (P < 0.05) than the control groups between d 6 and 9. No difference was found when comparing accumulated BW gain of the piglets between the day of age at foster (d 1 vs. 7; P = 0.606) or between the control d 1 and control d 7 groups (P = 0.759). Accumulated BW gain of piglets suckling TG d 7 gilts from d 3 through 9 was greater (P < 0.02) than that of the other groups and continued to be greater (P < 0.05) than that of either of the control groups through d 15. However, by d 15, accumulated BW gain of piglets suckling TG d 1 gilts was no longer different (P = 0.40) from that of the TG d 7 group and was greater (P < 0.05) than that of the control d 1 group. The enhanced lactation potential of these TG gilts synergized with suckling intensity to stimulate increased milk production during early lactation, resulting in increased piglet growth.     

Yoghurt for stronger suckling piglets and sows

窝内仔猪较多会给哺乳母猪带来很大的哺乳压力,还可影响仔猪的生长速度维持高水平的泌乳量需要采食大量的能量,面对一大窝仔猪,母猪不能分泌充足的乳汁满足仔猪发挥其生长潜力的要求(图1).较大的窝通常会产生许多瘦弱的仔猪,为这些弱小仔猪提供充足的营养以提高窝存活率、达到充足的断奶体重和断奶后的生长率都是巨大的挑战.要获得健康的母猪和仔猪,一个关键因素是保证仔猪在哺乳期间有较高的采食量.     

“仔猪饲喂”专栏(第一季)三:酸奶能让哺乳仔猪和母猪更加强壮

在出生后的哺乳仔猪饲喂酸奶,可提高其一生中前数周的采食量,产生较高的断奶体重和较快的生长速度。同时,母猪哺乳期的体重损失将减少,下一个妊娠期的增重将加大。     

环境丰容和哺乳母猪舍内散养对仔猪断奶前后生产性能的影响

<正>我们研究了哺乳期舍饲散养母猪以及断奶前后猪栏丰容对刚断奶仔猪生产性能的影响。断奶前,将限位饲养或散养母猪(n=32)所产仔猪(n=320)饲养在丰容(稻草、木屑、泥炭和枝条)或者贫瘠的圈舍