首页 > 最新文献

Journal of Agriculture of The University of Puerto Rico最新文献

英文 中文
Resistance in Digitaria to Yellow Sugarcane Aphid, Sipha flava (Forbes) as Related to Temperature and Rainfall 马地黄对黄甘蔗蚜虫的抗性与温度和降雨量的关系
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v56i1.10884
A. J. Oakes, A. Sierra-Bracero
Differential resistance to yellow sugarcane aphid, Sipha flava (Forbes), exists among Digitaria species. Differential resistance among species is expected on the basis of interspecific variation. Differential resistance to aphid damage exists among clones within species. Differences in insect resistance among clones within species are expected on the basis of intraspecific variation. Clones superior in insect resistance were delineated in this trial. The superior performance of phenotypes within species is masked by the average performance of the species. Significant negative correlations were found between insect resistance ratings and the number of rainy days and average temperature during a 28-day interval prior to rating. A model was calculated for the average behavior of species; it includes infestation expected on the basis of the number of rainy days and average temperature during the 28-day interval before rating. The model accounted for approximately 66 percent of the variability present.
黄连属植物对甘蔗黄蚜(Sipha flava, Forbes)存在差异抗性。在种间变异的基础上,估计种间的抗性差异。不同种类的无性系对蚜虫的抗性存在差异。在种内变异的基础上,预计种内无性系之间的抗虫性差异。本试验确定了抗虫性较好的无性系。物种内表型的优越表现被物种的平均表现所掩盖。鉴定前28天的降雨日数和平均气温与抗虫等级呈显著负相关。计算了物种平均行为的模型;它包括根据评级前28天间隔内的阴雨天数和平均温度预测的虫害。该模型约占目前变化的66%。
{"title":"Resistance in Digitaria to Yellow Sugarcane Aphid, Sipha flava (Forbes) as Related to Temperature and Rainfall","authors":"A. J. Oakes, A. Sierra-Bracero","doi":"10.46429/jaupr.v56i1.10884","DOIUrl":"https://doi.org/10.46429/jaupr.v56i1.10884","url":null,"abstract":"Differential resistance to yellow sugarcane aphid, Sipha flava (Forbes), exists among Digitaria species. Differential resistance among species is expected on the basis of interspecific variation. Differential resistance to aphid damage exists among clones within species. Differences in insect resistance among clones within species are expected on the basis of intraspecific variation. Clones superior in insect resistance were delineated in this trial. The superior performance of phenotypes within species is masked by the average performance of the species. Significant negative correlations were found between insect resistance ratings and the number of rainy days and average temperature during a 28-day interval prior to rating. A model was calculated for the average behavior of species; it includes infestation expected on the basis of the number of rainy days and average temperature during the 28-day interval before rating. The model accounted for approximately 66 percent of the variability present.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Efecto de la raza paterna y sexo de las crías en el crecimiento de conejos hasta las 13 semanas de edad 父系品种和后代性别对13周龄兔生长的影响
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19642
Tatiana Tosado-Martínez, Katherine Domenech-Pérez
La producción mundial de carne de conejo se basa en razas cárnicas; sin embargo, en Europa los cruces entre razas cárnicas y gigantes han resultado en canales de mayor tamaño. En las principales razas, las conejas alcanzan mayores tamaños adultos que los conejos. La presente investigación evaluó el efecto de la raza paterna y el sexo de las crías sobre la curva de crecimiento en conejos. Se compararon los pesos vivos (PV) semanales (primeras 13 semanas de vida; sexados a los 42 días) de la progenie de un padrote Nueva Zelanda Rojo (NZR; n=21) y de uno Gigante de Flandes (GF; n=31) con conejas cruzadas Californianas. Los datos de PV promedio individual (en el pre-sexado y post-sexado) se analizaron mediante el Proc GLIMMIX (SAS). En el pre-sexado no hubo interacción semana x padrote (P=0.3333) ni efecto de padrote (P=0.2051) afectando el PV de los conejos. Durante este periodo, el PV promedio de los conejos aumentó unos 641.50 g (P<0.0001). En el postsexado las interacciones semana x sexo x padrote (P=0.8821), sexo x padrote (P=0.2409), semana x padrote (P=0.1597) y semana x sexo (P=0.5663) no afectaron el PV. Sin embargo, se observaron diferencias en PV entre semanas (aumento total promedio de 1,417.61 g; P<0.0001), sexos (1,748.68±115.28 vs. 1,545.21±109.40 g en hembras y machos, respectivamente; P=0.0194) y padrotes (1,523.68±123.15 vs. 1,770.21±107.24 g en los hijos del NZR y del GF, respectivamente; P=0.0170) durante este periodo. Utilizar padrotes gigantes en madres cárnicas podría mejorar el crecimiento post-sexado de los conejos, especialmente en las hembras.  
世界兔肉生产以肉类品种为基础;然而,在欧洲,肉类和巨型品种之间的杂交导致了更大的运河。在主要品种中,兔子的成年体型比兔子大。本研究评估了父系和后代性别对兔子生长曲线的影响。每周(生命的前13周;42天时进行六次)的活重(PV)与加利福尼亚杂交兔子进行了比较,分别是新西兰红雀(NZR;n=21)和佛兰德斯巨人(GF;n=31)的后代。使用Proc-Glimmix(SAS)分析个人平均PV数据(性前和性后)。在性爱前,没有相互作用周x padrote(p=0.3333)或padrote效应(p=0.2051)影响兔子的PV。在此期间,兔子的平均PV增加了约641.50克(p<0.0001)。在性交后,X周性别X垫(p=0.8821)、X周性别X垫(p=0.2409)、X周性别(p=0.1597)和X周性别(p=0.5663)对PV没有影响。然而,在几周内观察到PV的差异(平均总增加1417.61克;p<0.0001)、性别(分别为1748.68±115.28对1545.21±109.40克;p=0.0194)和Padrotes(分别为1523.68±123.15对1770.21±107.24克;p=0.0170)在此期间。在肉类母亲中使用巨型垫子可以改善兔子,特别是雌性兔子的性后生长。
{"title":"Efecto de la raza paterna y sexo de las crías en el crecimiento de conejos hasta las 13 semanas de edad","authors":"Tatiana Tosado-Martínez, Katherine Domenech-Pérez","doi":"10.46429/jaupr.v105i1.19642","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19642","url":null,"abstract":"La producción mundial de carne de conejo se basa en razas cárnicas; sin embargo, en Europa los cruces entre razas cárnicas y gigantes han resultado en canales de mayor tamaño. En las principales razas, las conejas alcanzan mayores tamaños adultos que los conejos. La presente investigación evaluó el efecto de la raza paterna y el sexo de las crías sobre la curva de crecimiento en conejos. Se compararon los pesos vivos (PV) semanales (primeras 13 semanas de vida; sexados a los 42 días) de la progenie de un padrote Nueva Zelanda Rojo (NZR; n=21) y de uno Gigante de Flandes (GF; n=31) con conejas cruzadas Californianas. Los datos de PV promedio individual (en el pre-sexado y post-sexado) se analizaron mediante el Proc GLIMMIX (SAS). En el pre-sexado no hubo interacción semana x padrote (P=0.3333) ni efecto de padrote (P=0.2051) afectando el PV de los conejos. Durante este periodo, el PV promedio de los conejos aumentó unos 641.50 g (P<0.0001). En el postsexado las interacciones semana x sexo x padrote (P=0.8821), sexo x padrote (P=0.2409), semana x padrote (P=0.1597) y semana x sexo (P=0.5663) no afectaron el PV. Sin embargo, se observaron diferencias en PV entre semanas (aumento total promedio de 1,417.61 g; P<0.0001), sexos (1,748.68±115.28 vs. 1,545.21±109.40 g en hembras y machos, respectivamente; P=0.0194) y padrotes (1,523.68±123.15 vs. 1,770.21±107.24 g en los hijos del NZR y del GF, respectivamente; P=0.0170) durante este periodo. Utilizar padrotes gigantes en madres cárnicas podría mejorar el crecimiento post-sexado de los conejos, especialmente en las hembras. \u0000 ","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48456780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light sensors assess solar radiation vs. shade exposure of slick- and wild-type Puerto Rican Holstein cows 光传感器评估光滑型和野生型波多黎各荷斯坦奶牛的太阳辐射与阴影暴露
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19634
H. Sánchez-Rodríguez, K. Domenech-Perez
Anecdotal data suggest that slick-haired cows (SLICK) graze under solar radiation longer than their wild type-haired (WT) counterparts. However, to the authors’ knowledge, empirical data regarding the suggestion is scarce. This study aimed to use light sensors (HOBO Pendant MX) to study solar radiation exposure. Sensors (attached to a collar) were validated in 20 Holstein cows rotated from shade (0837 to 0906h) to sunlight (0907 to 0932h) and then back to shade (0933 to 1005h). After validation, sensors were used to compare the differences in solar radiation exposure between 10 SLICK and 10 WT Holstein cows. Data were analyzed by the GLIMMIX and FREQ procedures (SAS). Light intensity was greater under solar radiation than during the first (P<0.01) and second (P<0.01) shade periods (51,026.00±682.25; 2,282.40±647.64 and 1,907.27±626.28 lx, respectively). No differences were observed between shade periods (P=0.62). The SLICK cows spent more time under solar radiation than the WT cows (52.67 vs. 47.33%, respectively; P<0.01). Hair coat type and period interacted (P<0.01), with greater light intensities in SLICK than in WT cows under solar radiation (24,702±106.65 vs. 20,518±98.43 lx, respectively); but no differences were observed under shade (1,856±7.03 and 1,793.2±6.53 lx, respectively). The SLICK cows showed greater exposure time to direct solar radiation than their WT counterparts.
轶事数据表明,光滑毛发的奶牛(slick)在太阳辐射下吃草的时间比野生毛发的奶牛长。然而,据作者所知,关于这一建议的实证数据很少。本研究旨在使用光传感器(HOBO Pendant MX)来研究太阳辐射暴露。传感器(附在项圈上)在20头荷斯坦奶牛身上进行了验证,这些奶牛从阴凉处(0837至0906小时)旋转到阳光下(0907至0932小时),然后返回阴凉处(0933至1005小时)。验证后,使用传感器比较10头SLICK和10头WT荷斯坦奶牛的太阳辐射暴露差异。数据通过GLIMMIX和FREQ程序(SAS)进行分析。在太阳辐射下,光照强度大于第一次(P<0.01)和第二次(P<0.01)遮荫期(分别为51026.00±682.25;2282.40±647.64和1907.27±626.28 lx)。遮荫期之间没有差异(P=0.62)。SLICK奶牛在太阳辐射下的时间比WT奶牛多(分别为52.67%和47.33%;P<0.01)。毛被类型和周期相互作用(P<0.01),SLICK的光强度比WT奶牛在太阳照射下的光强度大(分别为24702±106.65和20518±98.43 lx);但在遮荫下(分别为1856±7.03和1793.2±6.53 lx)无差异。SLICK奶牛比WT奶牛暴露在直接太阳辐射下的时间更长。
{"title":"Light sensors assess solar radiation vs. shade exposure of slick- and wild-type Puerto Rican Holstein cows","authors":"H. Sánchez-Rodríguez, K. Domenech-Perez","doi":"10.46429/jaupr.v105i1.19634","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19634","url":null,"abstract":"Anecdotal data suggest that slick-haired cows (SLICK) graze under solar radiation longer than their wild type-haired (WT) counterparts. However, to the authors’ knowledge, empirical data regarding the suggestion is scarce. This study aimed to use light sensors (HOBO Pendant MX) to study solar radiation exposure. Sensors (attached to a collar) were validated in 20 Holstein cows rotated from shade (0837 to 0906h) to sunlight (0907 to 0932h) and then back to shade (0933 to 1005h). After validation, sensors were used to compare the differences in solar radiation exposure between 10 SLICK and 10 WT Holstein cows. Data were analyzed by the GLIMMIX and FREQ procedures (SAS). Light intensity was greater under solar radiation than during the first (P<0.01) and second (P<0.01) shade periods (51,026.00±682.25; 2,282.40±647.64 and 1,907.27±626.28 lx, respectively). No differences were observed between shade periods (P=0.62). The SLICK cows spent more time under solar radiation than the WT cows (52.67 vs. 47.33%, respectively; P<0.01). Hair coat type and period interacted (P<0.01), with greater light intensities in SLICK than in WT cows under solar radiation (24,702±106.65 vs. 20,518±98.43 lx, respectively); but no differences were observed under shade (1,856±7.03 and 1,793.2±6.53 lx, respectively). The SLICK cows showed greater exposure time to direct solar radiation than their WT counterparts.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47480702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
ANÁLISIS DESCRIPTIVO DEL EFECTO DE LA DURACIÓN DE LA ÉPOCA DE EMPADRONAMIENTO SOBRE LA EFICIENCIA REPRODUCTIVA Y PRODUCTIVA DE OVINOS CRIADOS EN ESTRÉS POR CALOR 登记期长短对热应激绵羊繁殖和生产效率影响的描述性分析
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19640
Abner A. Rodríguez-Carías, John Fernández-Van Cleve
ANÁLISIS DESCRIPTIVO DEL EFECTO DE LA DURACIÓN DE LA ÉPOCA DE EMPADRONAMIENTO SOBRE LA EFICIENCIA REPRODUCTIVA Y PRODUCTIVA DE OVINOS CRIADOS EN ESTRÉS POR CALOR
本研究的目的是评估在热应激条件下饲养的绵羊的繁殖和生产效率,并评估在热应激条件下饲养的绵羊的繁殖和生产效率。
{"title":"ANÁLISIS DESCRIPTIVO DEL EFECTO DE LA DURACIÓN DE LA ÉPOCA DE EMPADRONAMIENTO SOBRE LA EFICIENCIA REPRODUCTIVA Y PRODUCTIVA DE OVINOS CRIADOS EN ESTRÉS POR CALOR","authors":"Abner A. Rodríguez-Carías, John Fernández-Van Cleve","doi":"10.46429/jaupr.v105i1.19640","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19640","url":null,"abstract":"ANÁLISIS DESCRIPTIVO DEL EFECTO DE LA DURACIÓN DE LA ÉPOCA DE EMPADRONAMIENTO SOBRE LA EFICIENCIA REPRODUCTIVA Y PRODUCTIVA DE OVINOS CRIADOS EN ESTRÉS POR CALOR","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43834967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Whitefly-Transmitted Golden-Yellow Mosaic Virus of Phaseolus lunatus in Puerto Rico 波多黎各一种由白蛉传播的月相蝇金黄色花叶病毒
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v56i1.10888
J. Bird, J. Pérez, R. Alconero, N. Vakili, P. Meléndez
A golden-yellow mosaic virus of Phaseolus lunatus was detected recently in Puerto Rico. The virus was transmitted by the whitefly Bemisia tabaci race sidae. It causes a golden-yellow mosaic of beans. It was isolated from bean plantings located in the northwestern and north-central parts of Puerto Rico. Available evidence indicates that the P. lunatus virus is not related, at least closely, to the Puerto Rican whitefly-transmitted mosaic virus of Rhynchosia minima. Symptoms induced by the P. lunatus virus are remarkably similar to those elicited by the Brazilian golden mosaic and the Salvadoran yellow mottle viruses of beans.
最近在波多黎各发现了一种月相豆黄虫的金黄色花叶病毒。该病毒是由烟粉虱传播的。它会使豆子变成金黄色的马赛克。它是从波多黎各西北部和中北部的豆类种植中分离出来的。现有证据表明,月形虫病毒与波多黎各白蝇传播的小纹蝇花叶病毒至少没有密切的关系。由月亮豆病毒引起的症状与巴西金花叶病毒和萨尔瓦多黄斑豆病毒引起的症状非常相似。
{"title":"A Whitefly-Transmitted Golden-Yellow Mosaic Virus of Phaseolus lunatus in Puerto Rico","authors":"J. Bird, J. Pérez, R. Alconero, N. Vakili, P. Meléndez","doi":"10.46429/jaupr.v56i1.10888","DOIUrl":"https://doi.org/10.46429/jaupr.v56i1.10888","url":null,"abstract":"A golden-yellow mosaic virus of Phaseolus lunatus was detected recently in Puerto Rico. The virus was transmitted by the whitefly Bemisia tabaci race sidae. It causes a golden-yellow mosaic of beans. It was isolated from bean plantings located in the northwestern and north-central parts of Puerto Rico. Available evidence indicates that the P. lunatus virus is not related, at least closely, to the Puerto Rican whitefly-transmitted mosaic virus of Rhynchosia minima. Symptoms induced by the P. lunatus virus are remarkably similar to those elicited by the Brazilian golden mosaic and the Salvadoran yellow mottle viruses of beans.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70503681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Supplementation of dairy calves with digestive enzymes and fermentation products of Aspergillus oryzae and Aspergillus niger 犊牛补充米曲霉和黑曲霉消化酶及发酵产物的研究
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19633
Melissa A. Vaz-Ramírez, J. Curbelo-Rodríguez, G. Ortiz-Colón
The effect of supplementation with Aspergillus oryzae and A. niger fermentation products and digestive enzymes on weight gain, growth, and health of Holstein (n=11) and Jersey (n=9) calves was evaluated. All calves, individually housed, were fed unpasteurized waste milk at 0600 (2 L) and 1800 (2 L) for 49 days. All calves were fed ad libitum a calf starter that contained 18% CP; 2.5% fat; 8% CF; 14% ADF; 1.5% Ca; 0.5% P; 0.20 mg/kg Se; 2,273 IU/kg vitamin A; and 66 g/Tm of Lasalocid. Treated animals (five Holsteins and four Jerseys) were fed 2 g of commercial mixture of A. oryzae and A. niger fermentation products and the digestive enzymes α amylase, pectinase, endoglucanase, β glucanase, xylanase, and mannanase. Weight and height were recorded weekly using a Nasco© measuring tape and measuring stick, repectively. There was no interaction of treatment by breed by period (P=0.9636). Treatment did not affect weight gain across periods (P≥0.7215). As expected, Holsteins were heavier than Jerseys (P=0.0284) and both breeds increased in weight over time (P<0.0001). Treatment did not affect the height at the hip (P=0.7971) or withers (P=0.4248). Holstein’s height at the hip for the treatment group (HT) was 80.8 cm ± 2.31 at 49 days and 80.5 cm ± 3.25 for the control group (HC). Jersey treatment group (JT) ended with 85 cm ± 1.98 whereas the control group (JC) ended with 82.1 cm ± 2.17 at the hip. Height at the withers for HT measured 75.3 cm ± 2.62 compared to 80.5 cm for HC. Moreover, calves in JT at the end of the experiment measured 79.9 cm ± 1.23 compared to JC 76.7 cm ± 2.59. Health status did not benefit from the supplementation of A. oryzae and A. niger in combination with enzymes (P=0.1444). Supplementation with A. oryzae and A. niger fermentation products and digestive enzymes did not increase weight gain, growth, or health status in Holstein and Jersey calves fed waste milk under the tropical conditions in Puerto Rico.
研究了添加米曲霉和黑曲霉发酵产物及消化酶对荷斯坦犊牛(n=11)和泽西犊牛(n=9)增重、生长和健康的影响。所有小牛,单独饲养,在0600(2升)和1800(2升)饲喂未经巴氏消毒的废奶49天。所有犊牛自由饲喂含有18%粗蛋白质的犊牛发酵剂;2.5%的脂肪;CF 8%;ADF 14%;Ca 1.5%;0.5% P;0.20 mg/kg硒;2,273 IU/kg维生素A;和66 g/Tm的Lasalocid。饲养5只荷斯坦猪和4只泽西猪,分别饲喂2 g米曲霉和黑曲霉发酵产物和α淀粉酶、果胶酶、内切葡聚糖酶、β葡聚糖酶、木聚糖酶和甘露聚糖酶的商品混合物。每周分别用Nasco©卷尺和尺尺记录体重和身高。不同品种、不同时期的处理无交互作用(P=0.9636)。治疗对各时期体重增加没有影响(P≥0.7215)。正如预期的那样,荷斯坦犬比泽西犬重(P=0.0284),而且随着时间的推移,这两个品种的体重都在增加(P<0.0001)。治疗不影响髋部高度(P=0.7971)或肩胛骨(P=0.4248)。治疗组(HT)髋关节高度为80.8 cm±2.31,对照组(HC)髋关节高度为80.5 cm±3.25。Jersey治疗组(JT)髋部长度为85 cm±1.98,对照组(JC)髋部长度为82.1 cm±2.17。与HC的80.5 cm相比,HT的肩部高度为75.3 cm±2.62。实验结束时,JT组的犊牛体长为79.9 cm±1.23,而JC组为76.7 cm±2.59。与酶一起补充米曲霉和黑曲霉对健康状况没有改善(P=0.1444)。在波多黎各热带条件下,用废奶喂养的荷斯坦和泽西犊牛,补充米曲霉和黑曲霉发酵产物和消化酶并没有增加其增重、生长或健康状况。
{"title":"Supplementation of dairy calves with digestive enzymes and fermentation products of Aspergillus oryzae and Aspergillus niger","authors":"Melissa A. Vaz-Ramírez, J. Curbelo-Rodríguez, G. Ortiz-Colón","doi":"10.46429/jaupr.v105i1.19633","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19633","url":null,"abstract":"The effect of supplementation with Aspergillus oryzae and A. niger fermentation products and digestive enzymes on weight gain, growth, and health of Holstein (n=11) and Jersey (n=9) calves was evaluated. All calves, individually housed, were fed unpasteurized waste milk at 0600 (2 L) and 1800 (2 L) for 49 days. All calves were fed ad libitum a calf starter that contained 18% CP; 2.5% fat; 8% CF; 14% ADF; 1.5% Ca; 0.5% P; 0.20 mg/kg Se; 2,273 IU/kg vitamin A; and 66 g/Tm of Lasalocid. Treated animals (five Holsteins and four Jerseys) were fed 2 g of commercial mixture of A. oryzae and A. niger fermentation products and the digestive enzymes α amylase, pectinase, endoglucanase, β glucanase, xylanase, and mannanase. Weight and height were recorded weekly using a Nasco© measuring tape and measuring stick, repectively. There was no interaction of treatment by breed by period (P=0.9636). Treatment did not affect weight gain across periods (P≥0.7215). As expected, Holsteins were heavier than Jerseys (P=0.0284) and both breeds increased in weight over time (P<0.0001). Treatment did not affect the height at the hip (P=0.7971) or withers (P=0.4248). Holstein’s height at the hip for the treatment group (HT) was 80.8 cm ± 2.31 at 49 days and 80.5 cm ± 3.25 for the control group (HC). Jersey treatment group (JT) ended with 85 cm ± 1.98 whereas the control group (JC) ended with 82.1 cm ± 2.17 at the hip. Height at the withers for HT measured 75.3 cm ± 2.62 compared to 80.5 cm for HC. Moreover, calves in JT at the end of the experiment measured 79.9 cm ± 1.23 compared to JC 76.7 cm ± 2.59. Health status did not benefit from the supplementation of A. oryzae and A. niger in combination with enzymes (P=0.1444). Supplementation with A. oryzae and A. niger fermentation products and digestive enzymes did not increase weight gain, growth, or health status in Holstein and Jersey calves fed waste milk under the tropical conditions in Puerto Rico.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47692492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
CHARACTERIZATION OF COFFEE SHRUB BIOCHAR CHARGED WITH COW MANURE AND EFFECTIVE MICROORGANISMS 添加牛粪和有效微生物的咖啡灌木生物炭的特性研究
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19639
J. A. Dumas, Joaquín A. Chong, Christian Rivera-Goyco
CHARACTERIZATION OF COFFEE SHRUB BIOCHAR CHARGED WITH COW MANURE AND EFFECTIVE MICROORGANISMS
添加牛粪和有效微生物的咖啡灌木生物炭的特性研究
{"title":"CHARACTERIZATION OF COFFEE SHRUB BIOCHAR CHARGED WITH COW MANURE AND EFFECTIVE MICROORGANISMS","authors":"J. A. Dumas, Joaquín A. Chong, Christian Rivera-Goyco","doi":"10.46429/jaupr.v105i1.19639","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19639","url":null,"abstract":"CHARACTERIZATION OF COFFEE SHRUB BIOCHAR CHARGED WITH COW MANURE AND EFFECTIVE MICROORGANISMS","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42208375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Gamma Radiation Effects on Biochemical Compojients of Puerto Rican Mangos 伽马辐射对波多黎各芒果生化成分的影响
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v56i1.10883
J. Cuevas-Ruíz, H. Graham, R. A. Luse
The effects of gamma radiation were investigated on the content of ascorbic acid, total carotenoids, total carbohydrates and titratablc acidity in five varieties of mangos grown in Puerto Rico. Irradiation with 75-Krad doses did not significantly influence biochemical components. Subsequent changes were related closely to delay in fruit ripening, and reduction of fungal spoilage, effected by the radiation pasteurization. Radiation at the 75-Krad level extended shelf life to 7 days.
研究了γ辐射对波多黎各5个芒果品种抗坏血酸、总类胡萝卜素、总碳水化合物和滴定酸度的影响。75克拉剂量的辐照对生物化学成分没有显著影响。随后的变化与辐射巴氏灭菌对果实成熟的延迟和真菌腐败的减少密切相关。75克拉水平的辐射将保质期延长至7天。
{"title":"Gamma Radiation Effects on Biochemical Compojients of Puerto Rican Mangos","authors":"J. Cuevas-Ruíz, H. Graham, R. A. Luse","doi":"10.46429/jaupr.v56i1.10883","DOIUrl":"https://doi.org/10.46429/jaupr.v56i1.10883","url":null,"abstract":"The effects of gamma radiation were investigated on the content of ascorbic acid, total carotenoids, total carbohydrates and titratablc acidity in five varieties of mangos grown in Puerto Rico. Irradiation with 75-Krad doses did not significantly influence biochemical components. Subsequent changes were related closely to delay in fruit ripening, and reduction of fungal spoilage, effected by the radiation pasteurization. Radiation at the 75-Krad level extended shelf life to 7 days.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70503995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparative yield of carcass components of F1 crossbred rabbits sired by a New Zealand Red or a Flemish Giant buck 由新西兰红公鹿和佛兰德巨公鹿配种的F1杂交兔子胴体组成部分的比较产量
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v105i1.19635
Tatiana Tosado-Martínez, K. Domenech-Perez, H. Sánchez-Rodríguez
La cunicultura mundial se centra en razas cárnicas como la Nueva Zelanda variedad roja (NZR). También existen razas ornamentales como la Gigante de Flandes (GF), que alcanzan gran tamaño adulto. En Europa los cruces F1 entre estas razas han mostrado un excelente rendimiento. El presente estudio comparó el desempeño de conejos de padre NZR (n=seis machos y seis hembras) o GF (n=nueve machos y nueve hembras) y madres Californianas cruzadas. A la edad de 91 a 93 d los conejos se pesaron (peso vivo; PV) y procesaron. Se obtuvieron los pesos de la canal, vísceras, piel, hígado, riñones, pulmones, corazón, patas (delanteras y traseras), lomo y grasa abdominal. Se calcularon los rendimientos de la canal, patas y lomo. Los datos se analizaron mediante Proc GLIMMIX (SAS). No hubo interacción padrote x sexo (P>0.05) ni efecto de sexo (P>0.05). Los conejos hijos del NZR resultaron inferiores a los del GF en PV (P=0.0048) y en los pesos de la canal (P=0.0314), vísceras (P=0.0172), piel (P=0.0004), riñones (P=0.0004), pulmones (P=0.0453) y patas traseras (P=0.0007). En promedio, las diferencias observadas fueron 380.51, 158.76, 80.64, 104.58, 2.40, 1.70 y 0.79 g, respectivamente. Los conejos hijos del padrote NZR mostraron un menor rendimiento (0.79%) en las patas traseras que los del GF (P=0.0181). No hubo diferencias entre padrotes para las demás variables (P>0.05). Los conejos 50% NZR presentaron canales más pequeñas que los de padre GF. Los cruzamientos de raza gigante x raza cárnica se deben considerar para maximizar la producción de conejos en Puerto Rico.
世界昆虫学的重点是新西兰红色品种(NZR)等肉类品种。还有一些观赏品种,如佛兰德斯巨人(GF),成年体型很大。在欧洲,这些品种之间的F1杂交表现出色。这项研究比较了NZR父亲(n=6只雄性和6只雌性)或GF父亲(n=9只雄性和9只雌性)和交叉加州母亲的兔子的性能。在91至93天的年龄,兔子称重(体重;PV)并进行处理。测量了尸体、内脏、皮肤、肝脏、肾脏、肺、心脏、腿(前后)、腰部和腹部脂肪的重量。计算了尸体、腿和腰部的产量。数据通过Proc Glimmix(SAS)进行分析。没有Padrote x性别相互作用(P>0.05)或性别效应(P>0.05)。NZR的子兔在PV(P=0.0048)和胴体重量(P=0.0314)、内脏(P=0.0172)、皮肤(P=0.0004)、肾脏(P=0.0004)、肺部(P=0.0453)和后腿(P=0.0007)方面均低于GF。平均观察到的差异为380.51、158.76、80.64、104.58、2.40、1.70和0。分别为.79克。NZR Padrote的后代兔子在后腿的产量(0.79%)低于GF(P=0.0181)。其他变量的Padrote之间没有差异(P>0.05)。50%的NZR兔子的尸体比GF父亲的尸体小。必须考虑巨型品种x肉类品种的杂交,以最大限度地增加波多黎各的兔子产量。
{"title":"Comparative yield of carcass components of F1 crossbred rabbits sired by a New Zealand Red or a Flemish Giant buck","authors":"Tatiana Tosado-Martínez, K. Domenech-Perez, H. Sánchez-Rodríguez","doi":"10.46429/jaupr.v105i1.19635","DOIUrl":"https://doi.org/10.46429/jaupr.v105i1.19635","url":null,"abstract":"La cunicultura mundial se centra en razas cárnicas como la Nueva Zelanda variedad roja (NZR). También existen razas ornamentales como la Gigante de Flandes (GF), que alcanzan gran tamaño adulto. En Europa los cruces F1 entre estas razas han mostrado un excelente rendimiento. El presente estudio comparó el desempeño de conejos de padre NZR (n=seis machos y seis hembras) o GF (n=nueve machos y nueve hembras) y madres Californianas cruzadas. A la edad de 91 a 93 d los conejos se pesaron (peso vivo; PV) y procesaron. Se obtuvieron los pesos de la canal, vísceras, piel, hígado, riñones, pulmones, corazón, patas (delanteras y traseras), lomo y grasa abdominal. Se calcularon los rendimientos de la canal, patas y lomo. Los datos se analizaron mediante Proc GLIMMIX (SAS). No hubo interacción padrote x sexo (P>0.05) ni efecto de sexo (P>0.05). Los conejos hijos del NZR resultaron inferiores a los del GF en PV (P=0.0048) y en los pesos de la canal (P=0.0314), vísceras (P=0.0172), piel (P=0.0004), riñones (P=0.0004), pulmones (P=0.0453) y patas traseras (P=0.0007). En promedio, las diferencias observadas fueron 380.51, 158.76, 80.64, 104.58, 2.40, 1.70 y 0.79 g, respectivamente. Los conejos hijos del padrote NZR mostraron un menor rendimiento (0.79%) en las patas traseras que los del GF (P=0.0181). No hubo diferencias entre padrotes para las demás variables (P>0.05). Los conejos 50% NZR presentaron canales más pequeñas que los de padre GF. Los cruzamientos de raza gigante x raza cárnica se deben considerar para maximizar la producción de conejos en Puerto Rico.","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47924006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ABSENCE OF A PROTEINACEOUS INVERTASE-REGULATORY SYSTEM IN SUGARCANE STEM TISSUE 甘蔗茎组织中缺乏蛋白逆转录调控系统
Q4 Agricultural and Biological Sciences Pub Date : 2021-01-01 DOI: 10.46429/jaupr.v56i1.10892
N. A. Díaz, A. G. Alexander
ABSENCE OF A PROTEINACEOUS INVERTASE-REGULATORY SYSTEM IN SUGARCANE STEM TISSUE
甘蔗茎组织中缺乏蛋白逆转录调控系统
{"title":"ABSENCE OF A PROTEINACEOUS INVERTASE-REGULATORY SYSTEM IN SUGARCANE STEM TISSUE","authors":"N. A. Díaz, A. G. Alexander","doi":"10.46429/jaupr.v56i1.10892","DOIUrl":"https://doi.org/10.46429/jaupr.v56i1.10892","url":null,"abstract":"ABSENCE OF A PROTEINACEOUS INVERTASE-REGULATORY SYSTEM IN SUGARCANE STEM TISSUE","PeriodicalId":14937,"journal":{"name":"Journal of Agriculture of The University of Puerto Rico","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70503812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Journal of Agriculture of The University of Puerto Rico
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1