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Sow performance in response to natural betaine fed during lactation and post-weaning during summer and non-summer months

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Journal of Animal Science and Biotechnology 2020年第4期11卷 1061-1072页

作者： S.M.Mendoza R.D.Boyd J.Remus p.wilcock G.E.Martinez E.van Heugten Department of Animal Science North Carolina State UniversityRaleighNC 27695USA The Hanor Company Inc. FranklinKY 42134USA Dupont Animal Nutrition WilmingtonDE 19803USA. AB Vista MarlboroughUK.

Background: Two studies were conducted to evaluate the effects of dietary natural betaine on sow reproductive performance during summer(Exp. 1) and non-summer months(Exp. 2). Treatments were designed as a 2 × 2 factorial arrangement with factors including dietary betaine(0 or 0.2%) and period of supplementation(lactation or post-weaning until 35 days post-insemination). In Exp. 1, 322 and 327 sows and in Exp. 2, 300 and 327 sows representing young(parity 1 and 2) and mature(parity 3 to 6) sows, respectively, were ***: In Exp. 1, supplementation of betaine during lactation increased sow body weight losses(-11.95 vs.-14.63 kg;p = 0.024), reduced feed intake(4.12 vs. 4.28 kg/d;p = 0.052), and tended to reduce percentage of no-value pigs(p = 0.071). Betaine fed post-weaning reduced weaning-to-estrus interval(5.75 vs. 6.68 days;p = 0.054) and farrowing rate(86.74% vs. 91.36%;p = 0.060), regardless of parity group. post-hoc analysis with sows clustered into 3 parity groups(1, 2 and 3, and 4+) indicated that betaine fed in lactation to parity 4+ sows(p = 0.026) and betaine fed post-weaning to parity 1 sows increased the number of pigs born in the subsequent cycle(p ≤ 0.05). In Exp. 2, betaine fed during lactation tended to reduce the weaning-to-estrus interval(6.64 vs. 7.50 days;p = 0.077) and farrowing rate(88.23% vs.83.54%;p = 0.089), regardless of parity group. Feeding betaine post-weaning reduced number of pigs born(13.00 vs.13.64;p = 0.04) and pigs born alive(12.30 vs. 12.82;p = 0.075), regardless of parity ***: Using 0.2% betaine during the non-summer months did not benefit sow performance. During the summer, betaine supplementation in lactation increased subsequent litter size in parity 4+ sows. Betaine fed during the post-weaning period reduced the wean-to-estrus interval and farrowing rate, increased total number of pigs born for parity 1 sows and reduced total number of pigs born to parity 4+ sows. Further research is needed to determine if

关键词： Betaine Lactation post-weaning Reproduction Sows

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微生物植酸酶和氧化锌对断奶仔猪生产性能和血清微量元素的影响

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饲料与畜牧（新饲料） 2015年第3期 41-45页

作者：王继强 Walk C Srinongkote S wilcock p 北京市营养源研究所北京100069

杂交猪（n=288,日龄21±3d,体重7.1±0.2kg）经42d饲养试验,研究微生物植酸酶和不同水平的氧化锌对断奶仔猪生产性能和血清微量元素的影响。仔猪（6头阉割的公猪或母猪每栏）随机分组,采用2×3因子设计,2种水平的植酸酶（0FTU/kg和2500F... 详细信息

杂交猪（n=288,日龄21±3d,体重7.1±0.2kg）经42d饲养试验,研究微生物植酸酶和不同水平的氧化锌对断奶仔猪生产性能和血清微量元素的影响。仔猪（6头阉割的公猪或母猪每栏）随机分组,采用2×3因子设计,2种水平的植酸酶（0FTU/kg和2500FTU/kg）和3种水平的氧化锌（0mg/kg、1,750mg/kg、2,500mg/kg,锌的有效含量为72%）,每个试验组包含4栏阉割的公猪和4栏母猪。日粮营养成分包括钙磷等均超过营养需要量,试验分0-21d（阶段1）和22-42d（阶段2）。在阶段1,阶段2及整个42d试验期间,氧化锌和植酸酶相互作用对仔猪生产性能、血清锌、血清磷的含量没有显著影响（p〉0.05）。无论添加何种水平的氧化锌,植酸酶显著增加了阶段1仔猪日采食量（p=0.01）和日增重（p=0.02）,显著改善了整个试验期间的日增重（p=0.01）。日粮添加氧化锌显著降低了日增重（p=0.05）,3,500mg/kg氧化锌降低了阶段2猪的饲料转化效率。阶段1中,在不添加氧化锌的条件下植酸酶增加了血清钙的含量,这表明,氧化锌和植酸酶有显著的相互作用（p=0.02）。当氧化锌在阶段1中的日粮添加水平增加时,血清锌含量极显著线性增加（p〈0.001）,血清磷含量显著降低（p=0.05）。在阶段2中,随着氧化锌在日粮中的添加水平增加,血清钙的含量显著降低（p=0.04）,血清锌的含量显著增加（p=0.02）。植酸酶极显著增加了阶段1中仔猪血清锌（p=0.009）和磷（p=0.001）的水平。在阶段2中,添加植酸酶对血清磷的含量没有影响。总之,在本试验中,日粮添加氧化锌降低了仔猪的生产性能。在钙和磷充足的日粮中,无论添加何种的氧化锌,添加植酸酶均能够改善日增重,这可能是由于植酸中抗营养因子含量的降低。另外,通过植酸的水解产生植酸酶,从而降低了植酸-锌的相互作用并增加了血清锌、钙和磷的含量。然而,日粮添加氧化锌增加了血清锌的含量,导致降低了血清磷和钙的含量,表明钙-锌-磷存在拮抗作用。另外,植酸酶仅仅在不添加锌的条件下能够增加血清钙的含量,进一步表明血清锌、钙和磷有复杂的相互作用。

关键词：钙磷植酸酶猪氧化锌

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Dietary xylanase and live yeast supplementation influence intestinal bacterial populations and growth performance of piglets fed a sorghum-based diet

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Animal Nutrition 2020年第4期6卷 457-466页

作者： Gemma González-Ortiz Marco A.Callegari pete wilcock Diego Melo-Duran Michael R.Bedford Hilário R.V.Oliveira Marcos A.A.da Silva Carlos R.pierozan Caio A.da Silva AB Vista MarlboroughWiltshireSN84ANUnited Kingdom AKEI Animal Research Fartura18870000Brazil Servei de Nutricio i Benestar Animal(SNiBA) Department de Ciencia Animal i dels AlimentsUniversitat Autonoma de Barcelona(UAB)08193Spain Universidade Estadual Norte do parana Bandeirantes86360000Brazil Universidade Estadual de Londrina Londrina86051990Brazil

This study was to evaluate the effect of xylanase supplementation and the addition of live yeast,Saccharomyces cerevisiae,on growth performance and intestinal microbiota in *** hundred and eighty commercial crossbred 23-d-old piglets(pIC 417)were sorted by initial BW and allocated to 3 treatments:control(CTR)diet,CTR diet supplemented with xylanase at 16,000 birch xylan units/kg(XYL)and XYL diet supplemented with live yeast(2 x 1010 CFU/g)at 1 kg/t(XYL+LY).Each treatment had 10 replicates,with 6 animals each.A sorghum-based diet and water were available ad libitum for 42 d of the *** daily gain(ADG)and average daily feed intake(ADFI)were measured from 0 to 42 d(23-to 65-d-old)and feed conversion ratio(FCR)*** the end of the study,bacterial identification through 16 S rRNA(V3 to V4)sequencing of the ileal and caecal digesta from one piglet per replicate was *** treatment effects were observed on *** offered the live yeast in addition to the xylanase had increased ADG compared with those supplemented with xylanase alone(XYL+LY ***;p=0.655).FCR was improved with XYL and XYL+LY compared with CTR(p=0.018).Clostridiaceae counts in the ileum tended to reduce by 10%with XYL and 14%with XYL+LY compared to CTR(p=0.07).XYL and XYL+LY increased the counts of Lactobacillaceae in the caecum compared with CTR(ppplementation of live yeast combined with xylanase improved growth performance and microbial balance of piglets during the nursery phase.

关键词： Sorghum Nursery piglet Xylanase Live yeast Growth performance Microbiota

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