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1.
该试验旨在验证１９９６年的小试结果，试验设两个组；试验组饲喂４９２５／４９２６预混料，共１８８头母猪，对照组馈喂３８６４预混料，共２２０头猪。试验在母猪胎次、饲养管理条件基本相似，公、母猪品种基础饲粮完全相同的条件下进行，其试验结果：窝产仔数、窝产活仔数、活仔窝重，试验组较对照组分别提高０．４５头、０．６２头、０３９ｋｇ；断奶窝仔数、断奶窝重、断奶个体重，试验组较对照组分别提高０．４头、６．０ｋｇ 相似文献
2.
试验选用第三胎基础母猪３０头，技体重和产期相近原则随机等量分为３组，每组１０头。对照组母猪哺乳期喂基础饲料，试１组用１５％的鸡粪饲料代替精料，试２组与试１组营养水平基本相同，鸡粪饲料喂量为３０％。试验结果表明：各组仔猪２０日龄窝重，３５日龄窝重及哺乳期仔猪成活率等均无显著差异（Ｐ＞０．０５）；母猪泌乳失重和哺乳期采食量各组差异不显著（Ｐ＞０．０５）．以试１组母猪采食量较高，断奶窝重较大，表明在哺乳期母猪饲料中添加１５％的鸡粪饲料是可行的。 相似文献
3.
选择初生重相近的９窝乳猪，以窝为单位随机分为３组，每组３窝。三组饲粮中分别添加ＶＢ１２１０μｇ／ｋｇ，２０μｇ／ｋｇ，３０μｇ／ｋｇ，进行补饲试验，试验期４２天。结果Ⅰ、Ⅱ、Ⅲ组之间在２１日龄、２８日龄、３５日龄、４２日龄体重及全期增重、日增重等方面差异显著（Ｐ＜０．０５），以Ⅰ组为对照，Ⅱ、Ⅲ组比Ⅰ组分别提高日增重１１．３５％、３２．１６％。Ⅰ、Ⅱ、Ⅲ组料重比分别为０．６４、０．６０、０．５４。Ⅱ、Ⅲ组分别比Ⅰ组提高饲料利用率６．２５％、１５．６３％，经济效益对比，Ⅱ、Ⅲ组比Ⅰ组分别提高经济效益１２．０４％和３４．５７％。结果表明，乳猪饲粮中添加３０μｇ／ｋｇＶＢ１２比较理想 相似文献
4.
热应激对猪繁殖的影响及降温后果 总被引：6，自引：0，他引：6
亚热带气候条件下，开放式猪舍６，７，８，９月份的月平均舍温分别达到２８．４６℃，３０．３２℃，３０．２１℃，２９．１８℃。７，８，９月份，未采取降温措施组公猪精液的精子密度、活力分别为１．３４±０．７５亿／ｍＬ和０．６１±０．２７亿／ｍＬ，采取降温措施组公猪的精子密度、活力分别为１．７０±０．９１亿／ｍＬ和０．８０±０．０９亿／ｍＬ。７月份断奶未采取降温措施的母猪受胎率为８０％、产仔数为９．１４±２．６７头、产活仔数为８．２９±２．６９头，初生窝重为１３．２１±３．８８ｋｇ，采取喷雾降温措施的母猪受胎率、产仔数、产活仔数、初生窝重分别为９４．５９％、１０．７４±２．９４头、１０．３０±２．８６头和１４．２４±２．４２ｋｇ。 相似文献
5.
试验选用第二胎基础母猪３０头，按产期和体重相近原则随机等量分为３组，每组１０头。对照组母猪哺乳期喂基础饲料，试验１组用１０％的烤烟青贮饲料代替精料，试验２组与试验１组营养水平基本相同，烤烟青贮饲料喂量为２０％。试验结果表明：各组仔猪２０日龄窝重、３５日龄窝重及哺乳期仔猪成活率等均无显著差异（Ｐ＞００５）；母猪泌乳失重各组差异不显著（Ｐ＞００５）。以试验１组饲料报酬较高，断奶窝重较大，表明在哺乳期母猪饲料中添加１０％的烤烟青贮饲料是可行的。 相似文献
6.
不同断奶日龄对断奶仔猪生长发育的影响 总被引：2，自引：0，他引：2
选择杜长大杂交仔猪８窝共７２头，均分为两组，每组４窝３６头。试１组采用２８日龄断奶，试２组采用３５日龄断奶，试期２２ ２１日至６０日龄。结果：在试验期内，试１组仔猪腹泻１６２头次，死亡５头，６０日龄平均窝重１２４．０ｋｇ，个体重１６．０ｋｇ，２１～６０日龄采食量４２７．５ｇ／头，料重比１．８３：１；试２组仔猪腹泻１０６头次，死亡０头，６０日龄平均窝重１３２．１ｋｇ。俱本重１４．７ｋｇ，２１～６０日 相似文献
7.
日粮不同蛋白质,赖氨酸水平对泌乳母猪生产性能的影响 总被引：3，自引：0，他引：3
选用２～３胎母猪９０头，随机分成６个品种相同的组，试验日旧白质为１４％和１６％，赖氨酸为０．６％、０．８％、１．０％，通过对比饲养试验、母乳测定，结果表明：当日粮含ＤＥ约３３２０ｋｃａｌ／ｋｇ．ＣＰ为１６％，Ｌｙｓ为０．８％～１．０％，母猪日采食量为４．５ｋｇ时，泌乳力好，哺乳仔猪增生最快，２１日龄头均重达６．０５～６．１２ｋｇ，与其它处理组相比差异极显著（Ｐ〈０．０１），各处理组间仔猪下 发生率 相似文献
8.
将ＰＩＣ良种猪引进沙县，通过风土驯化，品系杂交和科学饲养，使杂交母猪经产窝均数达１３．０头，二代初产１２．０头，４５日龄断奶头数１１．９头，窝重９５．６ｋｇ，肥育猪日增重７７９．１克，料肉比２．８８：１，均高于纯种瘦肉型猪。 相似文献
9.
10.
高床母猪饲养管理包括分娩前的重胎母猪和哺乳母猪。母猪产后无乳综合症包括子宫炎、乳房炎、无乳症３种。防治高床母猪饲养管理和无乳综合症，提高断奶窝重和个体重，是提高效益的重要途径。笔者在规模化猪场工作多年，积累一些经验。现浅述如下：１高床母猪的饲养管理技术１．１日粮营养要求哺乳母猪粗蛋白ＣＰ１６％～１７％、消化能ＤＥ≥１３．２３７ＭＪ／ｋｇ、赖氨酸ＬＰＳ≥０．８％。怀孕母猪粗蛋白ＣＰ１４％～１５％、消化能ＤＥ≥１３．２３７ＭＪ／ｋｇ、赖氨酸ＬＹＳ≥０．８％。ＶｉｔＡ、Ｄ、Ｅ对… 相似文献
11.
为了比较不同规模猪场不同胎次母猪繁殖力的高低,本研究采集了106家不同规模猪场母猪的详细生产数据。按母猪实际存栏头数将猪场划分为<1 000、1 000~5 000、5 000~10 000和≥10 000头4个规模,分析不同规模猪场母猪1~9胎次活仔率、健仔率、畸形仔率、死胎率、木乃伊率、断奶活仔率及窝均产总仔数、窝均产活仔数、窝均产健仔数、窝均产死胎数、窝均断奶活仔数、窝均出生个体重、窝均出生窝重等相关繁殖指标的差异。结果表明,在胎次相同的情况下,猪场活仔率、健仔率和断奶活仔率随着饲养规模的扩大呈逐渐升高的趋势,而畸形仔率、死胎率和木乃伊率则呈相反趋势。母猪实际存栏头数≥10 000头的猪场1~7胎次（第4胎除外）的活仔率、健仔率和断奶活仔率均显著高于<1 000头猪场（P<0.05）,而与其他两个规模猪场差异不显著（P>0.05）。母猪存栏数<1 000头的猪场1、2、3、5、7胎次的死胎率显著高于其他3个规模猪场（P<0.05）。各个胎次的窝均产总仔数、产活仔数、产健仔数、畸形仔数、死胎数、木乃伊数、出生窝重都随着猪场饲养规模的扩大呈逐渐降低的趋势。<1 000头的猪场第2、3胎的母猪窝均产总仔数、产活仔数、产死胎数、窝均断奶活仔数、窝均出生窝重均显著高于其他3个规模猪场（P<0.05）。综上,养殖规模对不同胎次母猪生产力均产生较大影响,中大规模猪场（≥1 000头）的母猪繁殖力整体上低于小规模猪场（<1 000头）,但仔猪的体况和成活率要优于小规模猪场。 相似文献
12.
初生仔猪均匀度常用窝初生个体均重的标准偏差及变异系数表示,是反映母猪孕期繁殖效率的重要指标之一。为了研究不同胎次及产仔数对初生仔猪均匀度的影响,研究对1011窝广东小耳花猪的历史分娩数据进行分析。结果表明:窝初生个体均重为0.67 kg,窝初生个体均重的标准偏差为0.13 kg,窝初生个体均重的变异系数为19%;窝初生个体均重与窝初生个体均重标准偏差的相关系数是0.296,呈极显著正相关(P约0.01);窝初生个体均重变异系数与总产仔数的相关系数是0.028,与产活仔数的相关系数为0.024,均呈现弱正相关。研究建议在地方猪开发利用中,合理调整群体胎龄结构,改善饲养管理方式,合理调整孕期母猪营养水平,进一步提高群体初生仔猪均匀度。 相似文献
13.
智能饲喂对群养初产母猪生产性能影响的试验研究 总被引：2，自引：0，他引：2
为研究规模化猪场智能饲喂对群养初产母猪生产性能的影响,选用90头4月龄体重相近的长大二元初产母猪,随机分为智能化组、群养群饲组和限位栏组,每组30头母猪,测定初产母猪的生产性能。结果表明,情期受胎分娩率,智能化组比群养群饲组提高10个百分点（P＜0.05）,比限位栏组提高16.66个百分点（P＜0.01）;窝产仔数、窝产活仔数、初生窝重、泌乳力、窝断奶仔猪数和断奶窝重,智能化组比群养群饲组分别提高0.53头、0.81头、2.81千克、8.78千克、1.14头和9.42千克（P＜0.05）,比限位栏组分别提高1.01头、1.33头、4.86千克、12.92千克、1.68头和10.89千克（P＜0.01）;育成率,智能化组比群养群饲组和限位栏组分别提高3.9和6个百分点（P＜0.01）;返情率,智能化组比群养群饲组降低3.96个百分点（P＜0.05）,比限位栏组降低11.36个百分点（P＜0.01）;母猪淘汰率,智能化组为13.33%,比群养群饲组和限位栏组均降低3.34个百分点（P＜0.05）。智能化饲喂能显著提高母猪情期受胎分娩率和繁殖性能,降低返情率和淘汰率,提高其生产性能。 相似文献
14.
Effects of sarcoptic mange on lactating swine and growing pigs 总被引：1，自引：0，他引：1
The impact of Sarcoptic mange on sows and on performance of their offspring from birth to slaughter was determined. Sows naturally infested with Sarcoptic mange were paired, mated to the same boar, and assigned randomly to treated or control farrowing groups. Treated sows received ivermectin s.c. at 300 micrograms/kg body weight; control sows received the vehicle s.c. Sow performance was evaluated via sow feed consumption, litter size, litter birth weights, litter weaning weights and piglet death loss from birth to weaning. Seven replicates (farrowing groups), each with six sow pairs, were included in the trial. Offspring from treated and control sows, 35 head/group, were fed to slaughter weights. Untreated sows had litters that weighed 4.14 kg less than ivermectin-treated sow litters at 21 d (P less than .07). Treated sows consumed 1.95 kg less feed per weaned piglet and .13 kg less feed per kilogram of weaned piglet (P less than .05). Piglets from treated sows were 5.79 kg/head heavier at slaughter (P less than .05) and had a .05 kg/d superior average daily gain (P less than .05). 相似文献
15.
为观察复方中草药制剂对母猪分娩和泌乳效果的影响,试验选择妊娠80-90 d的68头妊娠母猪,按配种日龄、胎次、体况、品种随机均分为中草药制剂组和对照组,每组34头,每头母猪为1个重复。两组基础饲粮相同,中草药制剂组在基础饲粮中按每吨300 g添加中草药制剂,试验期为妊娠80 d至断奶。结果表明,与对照组相比,中草药制剂组窝均产活仔数和断奶窝均仔猪数分别提高0.93头（P＜0.05）和1.09头（P＜0.01）;产活仔率和健仔率分别提高5.91和4.52个百分点;仔猪初生个体均重、断奶个体均重、仔猪平均日增重分别提高0.05 kg、0.5 kg、22.6 g,差异均显著（P＜0.05）。中草药制剂可有效提高母猪分娩质量和泌乳水平。 相似文献
16.
Effects of L-carnitine fed during gestation and lactation on sow and litter performance 总被引：1，自引：0，他引：1
Musser RE Goodband RD Tokach MD Owen KQ Nelssen JL Blum SA Dritz SS Civis CA 《Journal of animal science》1999,77(12):3289-3295
Multiparous sows (n = 307) were used to evaluate the effects of added dietary L-carnitine, 100 mg/d during gestation and 50 ppm during lactation, on sow and litter performance. Treatments were arranged as a 2 (gestation or lactation) x2 (with or without L-carnitine) factorial. Control sows were fed 1.81 kg/d of a gestation diet containing .65% total lysine. Treated sows were fed 1.59 kg/d of the control diet with a .23 kg/d topdressing of the control diet that provided 100 mg/d of added L-carnitine. Lactation diets were formulated to contain 1.0% total lysine with or without 50 ppm of added L-carnitine. Sows fed 100 mg/d of added L-carnitine had increased IGF-I concentration on d 60 (71.3 vs. 38.0 ng/mL, P<.01) and 90 of gestation (33.0 vs. 25.0 ng/mL, P = .04). Sows fed added L-carnitine had increased BW gain (55.3 vs 46.3 kg; P<.01) and last rib fat depth gain (2.6 vs. 1.6 mm; P = .04) during gestation. Feeding 100 mg/d of added L-carnitine in gestation increased both total litter (15.5 vs. 14.6 kg; P = .04) and pig (1.53 vs 1.49 kg; P<.01) birth weight. No differences were observed in pig birth weight variation. Added L-carnitine fed during gestation increased litter weaning weight (45.0 vs. 41.3 kg, P = .02); however, no effect of feeding L-carnitine during lactation was observed. No differences were observed in subsequent days to estrus or farrowing rate. Compared to the control diet, feeding added L-carnitine in either gestation, lactation, or both, increased (P<.05) the subsequent number of pigs born alive, but not total born. In conclusion, feeding L-carnitine throughout gestation increased sow body weight and last rib fat depth gain and increased litter weights at birth and weaning. 相似文献
17.
H Van Den Brand LCM Van Enckevort EM Van Der Hoeven B Kemp 《Reproduction in domestic animals》2009,44(6):884-888
Effects of dextrose plus lactose in sow’s feed were tested on subsequent reproductive performance and within litter birth weight variation. During the last week of gestation and lactation, sows were either fed a commercial lactation diet (Control: C), or an isocaloric diet containing 25 g/kg dextrose plus 25 g/kg lactose (Treatment: T). In the subsequent weaning‐to‐oestrus interval (WEI), all sows received the same amount of a commercial feed, but T sows were supplemented with 150 g dextrose plus 150 g lactose per day. Weight and backfat changes were recorded as well as litter characteristics during the treatment period and the subsequent parity. No significant effect of treatment was found on the subsequent reproductive performance, including the number of piglets born, although the number of live born piglets was 0.51 larger (p = 0.31) and weight of the live born piglets was 84 g higher in the T sows (p = 0.07) than in the C sows. When sows were categorized in sows with 12 or less and more than 12 total born piglets in the previous litter, treatment of sows with dextrose plus lactose resulted for the group with 12 or less piglets in a strong increase in subsequent total born piglets (13.97), whereas in the untreated sows the subsequent litter size was 11.89. In the group with more than 12 total born piglets, no effect of treatment was found (interaction between previous litter size and treatment p = 0.03). The within litter variation in birth weight in the subsequent litter was numerically lower in the T sows. We concluded that the use of dextrose and lactose during lactation and WEI seems to enhance litter size in sows with low previous litter size and seems to have the potential to reduce the within litter variation in birth weight. 相似文献
18.
Variables related to the progress of parturition and probability of stillbirth in swine 总被引：2，自引：0，他引：2
Zaleski HM Hacker RR 《The Canadian veterinary journal. La revue veterinaire canadienne》1993,34(2):109-113
Sow and piglet variables related to probability of stillbirth and to viability score were analyzed in litters from 98 multiparous Yorkshire sows. Immediately after the birth of each piglet, viability was scored using Randall's method. Sow variables related to the probability of stillbirth were average birth weight of the litter (p = 0.0001), sow age (p = 0.001), sow condition score (p = 0.003), length of gestation (p = 0.005), and number of piglets in the litter (p = 0.01). Sow variables related to average viability score were average birth weight of the litter (p = 0.001), standard deviation in birth weight in the litter (p = 0.02), sow age (p = 0.03), sow condition score (p = 0.03), and length of gestation (p = 0.03). Piglet variables related to probability of stillbirth were piglet hemoglobin (p = 0.0001), position in the birth order (p = 0.0001), broken umbilical cord (p = 0.0004), and preceding birth interval (p = 0.0004). Piglet variables related to viability score were piglet hemoglobin (p = 0.0001), position in the birth order (p = 0.0001), broken umbilical cord (p = 0.0001), preceding birth interval (p = 0.0001), and birth weight (p = 0.004). Preceding birth interval was related to whether the piglet was live or stillborn (p = 0.0001), to position in the birth order (p = 0.003), and to the sex of the piglet (p = 0.03).
The results demonstrated that sow and piglet variables were highly correlated to probability of stillbirth and to viability score. In addition it was also found that the probability of stillbirth was not associated with the duration of farrowing but with the number of piglets in the litter and piglet hemoglobin level. This study also found that lower weight piglets tend to have poor viability, but are not more prone to stillbirth as commonly suggested. These low viability piglets may survive if the necessary care is given during the farrowing process.
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