scholarly journals Investigation On Seminal Attributes And Fertility Of Black Bengal Goat

1970 ◽  
Vol 37 (2) ◽  
pp. 17-24 ◽  
Author(s):  
AS Apu ◽  
SS Husain ◽  
MAMY Khandoker ◽  
AHMS Rahman ◽  
DR Notter
Keyword(s):  
Sperm Concentration ◽  
Fertility Rate ◽  
The Other ◽  
Mean Values ◽  
Other Hand ◽  
Significant Difference ◽  
The Mean ◽  
Black Bengal Goat ◽  
Fresh Semen ◽  
Selection Of

A total of 120 ejaculates from six adult Black Bengal bucks were studied to determine the semen attributes and evaluate their fertility. The various semen attributes of fresh semen were volume, sperm concentration, mass motility, live spermatozoa and normal spermatozoa percentage. All the semen attributes differed significantly (P<0.05) except normal spermatozoa percentage between the bucks. A total of 129 goats were inseminated with diluted semen to assess the fertility rate of Black Bengal buck. The mean values for the various semen attributes were: volume 0.58 ± 0.03 ml; sperm concentration 2797.22 ± 18.73 × 106/ml; mass motility 77.82 ± 0.61%; live spermatozoa 86.72 ± 0.54% and normal spermatozoa 91.39 ± 0.24%, respectively in fresh semen. With regard to the diluted semen, individual bucks showed significant difference (P<0.05) on motility, live and normal spermatozoa percentages. The diluted semen motility varied from 68.64 ± 1.66 to 74.55 ± 1.06%. On the other hand, the live and normal spermatozoa percentages of the diluted semen varied from 83.73 ± 0.94 to 89.27 ± 1.40% and 88.73 ± 0.54 to 91.91 ± 0.78%, respectively. From the insemination trial, the average kidding rate obtained was 58.9% in Black Bengal goat. It is suggested that selection of good quality buck semen could improve the overall fertility of Black Bengal goat. DOI: http://dx.doi.org/10.3329/bjas.v37i2.9877 BJAS 2008; 37(2): 17-24

Effect of grain or silage supplementation on meat quality attributes of cryptorchid lambs grazing lucerne or annual grass-clover pastures

1995 ◽  
Vol 35 (4) ◽  
pp. 461 ◽  
Author(s):  
DL Hopkins ◽  
PJ Holst ◽  
DG Hall
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
The Other ◽  
Carcass Weight ◽  
Annual Grass ◽  
Eye Muscle ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean ◽  
Ad Libitum

Objective and subjective tests for quality were performed on the meat from 40 cryptorchid second-cross lambs fed lucerne only (L; n = 8), lucerne plus an oat grain supplement ad libitum (LO; n = lo), lucerne plus wilted lucerne silage ad libitum (LS; n = 11), or an oat-lupin grain (3:1) supplement at 90% of ad libitum while grazing dry summer annual pasture (OL; n = 11). All carcasses complied with the Elite lamb specification of weight >22 kg and GR measurement 6-15 mm. There was no significant difference between groups for hot carcass weight, the mean (� s.e) values being 25.1 0.43, 25.2 � 0.36,25.2 � 0.38, and 25.3 � 0.36 kg for L, LS, LO, and OL groups, respectively. When the GR and fat depth over the eye muscle at the 12th rib were adjusted to a common carcass weight of 25.2 kg there was no significant difference between groups. There was no significant difference between groups for pH, or the colour values a*, b*, and L* of the M. longissimus thoracis et lumborum (a* is relative redness, b* relative yellowness, and L* relative lightness). The shear force values for the loin muscle were significantly (P<0.05) greater for lambs from group OL than for those from group LO. Cooking loss for the loin muscle was significantly (P<0.05) greater for OL lambs than all other groups. A comparison of the mean values for aroma and flavour showed the lambs from group OL produced meat that was considered significantly (P<0.05) less desirable for these characteristics, with other groups being similar. Meat from OL-fed lambs was considered oilier and less meaty than meat from lambs fed the other diets. There was a significant (P<0.05) difference in absolute scores between panellists, but their ranking was not affected and there was no panellist x sample interaction. Because many producers use grain supplements such as oats and lupins for finishing lambs on dry forages, further study is recommended that focuses on the interaction between supplement and the base forage.

scholarly journals Effect of preservation time on the quality of frozen semen in indigenous rams

2015 ◽  
Vol 44 (1) ◽  
pp. 10-15 ◽  
Author(s):  
BBA Mahmuda ◽  
Azizun Nesa ◽  
BF Zohara ◽  
MGS Alam ◽  
FY Bari
Keyword(s):  
Semen Quality ◽  
Egg Yolk ◽  
Volume Density ◽  
Normal Morphology ◽  
Mean Values ◽  
Frozen Semen ◽  
Significant Difference ◽  
The Mean ◽  
Fresh Semen

The study was carried out to observe the effects of preservation time on the quality of frozen semen of indigenous rams. Semen was collected using AV once a week from 4 rams. Tris based with 10% egg yolk and 7% glycerol extender was used to extend and freezing the semen. Fresh semen was evaluated for volume, density, mass motility and concentration, and mean values were observed as 0.8±0.2ml, 3.0±0.3, 3.2±0.7, 3.9±0.7×109/ml, respectively. Significant difference (p<0.05) was found for all the parameters among the rams. Mean values of motility, viability and normal morphology percentages were 83.3±4.3%, 88.2±4.4%, 84.2±3.5% in fresh semen while those of chilled semen at 40C were 74.7±2.3, 78.8±4.9 and 79.2±2.9%, respectively. For all the parameters, significant (p<0.05) difference was found among the rams. Frozen sperm motility was observed after thawing at 39-400C for 14-15 seconds. The mean motility, viability and normal morphology percentages after freezing for 24hrs, 7, 15 and 30 days of duration were 39.8±3.1, 41.1±4.3, 40.1±4.1 and 39.4±2.9%; 44.5±2.5, 45.3±2.8, 44.6±2.8 and 43.9±2.8%; 71.0±2.0, 71.7±1.5, 70.7±1.7 and 70.3±1.8%, respectively and values did not decrease significantly (p>0.05) with the increasing time of preservation. Non significantly decrease of the semen quality with advance of preservation time indicates the suitability of the protocol used for freezing of indigenous ram semen in Bangladesh.DOI: http://dx.doi.org/10.3329/bjas.v44i1.23113            Bang. J. Anim. Sci. 2014. 44 (1): 10-15

scholarly journals Studying the Impact of Presence of Alpha Acid Glycoprotein and Protein Glycoprotein in Chronic Myeloid Leukemia Patients Treated with Imatinib Mesylate in State of Qatar

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 4846-4846
Author(s):  
Nader I Al-Dewik ◽  
Andrew Jewell ◽  
Mohamed A. Yassin ◽  
Hisham Morsi
Keyword(s):  
Chronic Myeloid Leukemia ◽  
Imatinib Mesylate ◽  
Myeloid Leukemia ◽  
The Other ◽  
Control Group ◽  
Acid Glycoprotein ◽  
Other Hand ◽  
Significant Difference ◽  
Blast Cells ◽  
The Mean

Abstract Background Despite the efficacy of Imatinib Mesylate (IM) in treating Chronic Myeloid Leukemia (CML), a high degree of resistance has already been noted. Alpha acid glycoprotein (AGP) may reduce drug efficacy through its ability to interact with IM and blocks it from reaching its target while Protein glycoprotein (PGP) may reduce the intracellular concentration of the drug via an active pump mechanism. In our cohort of patients with the highest rate of resistance to IM globally, we investigated if the level of AGP and PGP could be correlated with CML resistance/response to IM? and if so, could they be employed as biological markers for CML resistance to treatment? Methods To answer these questions, the 26 CML patients who were enrolled into our previous study between November 2006 and December 2011 were investigated for AGP and PGP levels at diagnosis and during treatment. Serum samples were analyzed to determine AGP level via an Immunoturbidimetric assay and up-regulation of PGP level was determined via Flow cytometry analysis of Peripheral Blood (PB) and Bone Marrow (BM) samples. Results A total of 100 serum, 40 BM & 100 PB samples were collected from the 26 CML patients (22 CP & 4 AP) treated at the National Center for Cancer Care and Research (NCCCR) in Qatar. Samples from 10 healthy volunteers were collected as a control. AGP results At Diagnosis 11/22 CP patients had elevated AGP (mean 1.5 ±0.11 g/l) while 3/4 AP patients had elevated AGP (mean 1.8 ±0.3 g/l). During follow-up The mean AGP values among the 14/26 patients who failed IM treatment were (1.05 ±0.09 g/l) while the values for the 12 patients who responded to the treatment were not significantly different (1.1 ±0.06 g/l) (p =) > 0.05. The 10/14 resistant patients who were previously reported to have mutations/Additional Chromosomal Abnormalities (ACAs) as underlying mechanisms of resistance, showed a mean AGP level of 1.06 (±0. 09) while the 4/14 patients with no mutations/ACAs showed no significant difference (AGP leve1.04 ±0.08) (p =) > 0.05. The mean value of the 10 healthy individuals who were enrolled as a control group was 0.71 ±0.04 g/l. The mean AGP levels were 1.2 (±0.12), 1.61 (±0.38), 1.05 (±0.09), 1.1 (±0.06), and 0.71(±0.04) g/l for 22/26 CP, 4/26 AP, 14/26 failed treatment, 12/26 optimal responders and controls respectively and the differences between patients groups and the control group on other hand were significant (p) 0.001, 0.03, 0.003, and 0.005 respectively. There was no a significant difference or correlation between AGP levels amongst the different groups of patients and there was no significant correlation between AGP and other biomarkers such as Platelets (PLTs), White Blood Cells (WBCs), Absolute Basophils (Abs. Baso) and Lactate Dehydrogenase (LDH) of CML patients in the responders group. However, the group who failed treatment showed a strong correlation between elevated AGP and LDH (p = 0.0001), WBCs (p=0.002) and Abs. Baso (p=0.03) PGP results On the other hand, the mean PGP level was 1.25 (±0.06), 1.17 (±0.02), 1.21 (±0.03), 1.2 (±0.04) for AP, CP, responders and resistant patients respectively. Flow cytometric analysis showed no significant difference in the fluorescence intensities of the blast cells incubated with CD 243 and the blast cells incubated with isotypic control among the different groups of patients. Discussion and Conclusion With a significant difference in AGP levels between patients and controls in our cohort of CML cases, combining AGP with others markers showed significant correlations during different disease stages that may be employed as a warning sign for resistance of CML to Tyrosine Kinase Inhibitors (TKIs). PGP expression, on the other hand did not differ in patients presenting in chronic phase or accelerated phase and showed no specific pattern for those who resist or respond to IM treatment. However, neither AGP nor PGP could be employed as an independent marker for disease progression as the noticed resistance in our CML patients could not be correlated to AGP or PGP levels and regardless of response or resistance to treatment, there was no significant pattern of AGP or PGP expression. Disclosures Al-Dewik: Qatar National Research Fund (QNRF): Other: sponsorship.

scholarly journals Comparative Study of Gir Cattle and Surti Buffalo Bulls Semen under Middle Gujarat Climate

2017 ◽  
Vol 13 (01) ◽  
Author(s):  
P. J. Chaudhary ◽  
A. J. Dhami ◽  
D. V. Chaudhari ◽  
K. K. Hadiya ◽  
J. A. Patel
Keyword(s):  
Sperm Concentration ◽  
Membrane Integrity ◽  
Mean Values ◽  
Abnormal Sperm ◽  
Buffalo Semen ◽  
The Mean ◽  
Mass Activity ◽  
Live Sperm ◽  
Surti Buffalo ◽  
Fresh Semen

This study was undertaken during the favourable breeding season of the year 2016-17 on healthy mature Gir cattle and Surti buffalo bulls, three each, at Sperm Station of the College. The ejaculates (9/bull, total 54) collected in the morning using artificial vagina were evaluated for routine seminal attributes, including acrosomal and plasma membrane integrity. The mean values of ejaculate volume, sperm concentration, mass activity (0-5 score), individual sperm motility, live sperm, abnormal sperm, intact acrosome and HOST reactive sperms observed in fresh semen of Gir cattle and Surti buffalo bulls were 6.20±0.42 and 3.34±0.23 ml (P less than 0.01), 1169.44±61.71 and 846.30±54.82 million (P less than 0.01), 3.44±0.09 and 3.42±0.08, 76.53±0.53 and 80.76±0.39 % (P less than 0.05), 81.00±1.32 and 84.73±0.78 % (P less than 0.05), 6.00±0.37 and 5.81±0.40 %, 95.59±0.35 and 95.54±0.25 % as well as 80.30±1.90 and 84.58±0.88 % (P less than 0.05), respectively. The variation between cattle and buffalo semen was significant for most of these traits. The variations between bulls within breed were however not significant. Significant correlations were observed only between mass activity and initial motility (0.62), and live and abnormal sperm (-0.41) in Gir bulls, and for ejaculate volume with sperm concentration (-0.56) and abnormal sperm (0.45), and between live and HOS reactive sperms (0.48) in Surti bulls.

scholarly journals Ingestions Alimentaires Et Performances De Production Et De Reproduction Des Lapines (Oryctolagus Cuniculus) Gestantes Nourries Avec Des Aliments Contenant Des Feuilles De Neem (Azadirachta Indica)

2017 ◽  
Vol 13 (15) ◽  
pp. 82
Author(s):  
Soumanou Toleba S. ◽  
Mahamadou Dahouda ◽  
Sévérin D. Vidjannagni ◽  
Haziz Sina ◽  
Ulrich Natonnagnon ◽  
...  
Keyword(s):  
Azadirachta Indica ◽  
Oryctolagus Cuniculus ◽  
The Other ◽  
Single Female ◽  
Other Hand ◽  
Significant Difference ◽  
Series Of Experiments ◽  
The Mean ◽  
Control Batch

This study was conducted as part of a series of experiments on the use of dried leaves for the production of complete rabbit feed. For this purpose, 120 female rabbits, distributed in 4 batches (N0, N5, N10 and N15) with the same number (30) and homogeneous average weights (2595 g to 2708.7 g) were followed before and during pregnancy. Each of the 4 lot were composed, in the same proportion, of nulliparous and multiparous females. Those animals were subjected to four Azadirachta indica leaves based foods in different proportions: N0: 0%; N5: 5%; N10: 10% and N15: 15%. Our data shows that the gestation rates were as follows for the four lots: N0 (90%), N5 (80%) and N10 (90%) and N15 (76.67%). Except a single female from lot N10, all females were pregnant and gave birth. No significant difference (P> 0.05) was found between the mean of total daily consumptions among the pregnant rabbits of the four batches that ranged from 169.40 to 198.31 g / d. The average litters of the batches N0 (5.33 rabbits / mother), N5 (6.5 rabbits / mother) and N10 (5.61 rabbits / mother) were similar (P> 0.05) but higher (P 0.05). On the other hand, no difference (P> 0.05) was observed between the average weights of the rabbits of the control batch N0 (59.06 g) and those of N5 and N15.

scholarly journals Análisis de la frecuencia cardíaca en el pádel femenino amateur (Analysis of heart rate in amateur female padel)

Retos ◽  
2017 ◽  
pp. 204-207
Author(s):  
José Antonio Carbonell Martínez ◽  
Juan Ferrándiz Moreno ◽  
Norberto Pascual Verdú
Keyword(s):  
Heart Rate ◽  
Research Study ◽  
The Other ◽  
Maximum Heart Rate ◽  
Mean Values ◽  
Other Hand ◽  
Racket Sport ◽  
The Mean

Este estudio de investigación está centrado en el pádel, un deporte de raqueta de cancha dividida y que se juega fundamentalmente en parejas. En cuanto al objetivo, éste ha sido determinar las respuestas de la frecuencia cardíaca en el pádel femenino amateur, así como las zonas de entrenamiento según los diferentes  umbrales fisiológicos durante la competición. Las participantes han sido N=9 jugadoras, de 32,8±12,3 años, y con un nivel de juego semi-profesional y amateur. Hemos registrado la frecuencia cardíaca (FC) mediante receptores para la misma, en un total de 16 partidos. Para ello, hemos tenido en cuenta las variables de FC máxima y FC media de cada set y de cada bloque de 5 juegos disputados. La media de los valores obtenidos ha sido de 179±9.4 ppm respecto a la FC máxima, y de 150±8.6 ppm respecto a la FC media del partido. Por otro lado, hemos analizado la FC en función de las zonas de entrenamiento, obteniendo que el mayor tiempo del partido las jugadoras se sitúan entre el 80-90% de la FC máxima teórica.Abstract. This research study is centered on the paddle, a split-court racket sport and played 2x2. As for the aim of study, this has been to determine the heart rate responses in the female amateur paddle, as well as the training zones according to the physiological thresholds during the competition. The participants were N = 9 players, 32.8 ± 12.3 years, and with a semi-professional and amateur level of play. We recorded the heart rate (HR) through receptors for the same, in a total of 16 matches. For this, we have taken into account the variables of maximum FC and mean FC of each set and of each 5 games played. The mean values obtained were 179±9.4 ppm from the maximum HR, and 150±8.6 ppm from the average HR of the match. On the other hand, we have analyzed the HR according to the training zones, obtaining that the greater time of the party the players are between 80-90% of the theoretica maximum heart rate.

Multi-Center Study of Thromboplastin Calibration Precision – Influence of Reagent Species, Composition, and International Sensitivity Index (ISI)

1993 ◽  
Vol 69 (01) ◽  
pp. 035-040 ◽  
Author(s):  
A M H P van den Besselaar ◽  
R M Bertina
Keyword(s):  
Oral Anticoagulants ◽  
International Normalized Ratio ◽  
The Other ◽  
World Health ◽  
Rabbit Brain ◽  
Sensitivity Index ◽  
Bovine Plasma ◽  
Significant Difference ◽  
The Mean ◽  
International Sensitivity Index

SummaryFour thromboplastin reagents were tested by 18 laboratories in Europe, North-America, and Australasia, according to a detailed protocol. One thromboplastin was the International Reference Preparation for ox brain thromboplastin combined with adsorbed bovine plasma (coded OBT/79), and the second was a certified reference material for rabbit brain thromboplastin, plain (coded CRM 149R). The other two thromboplastin reagents were another rabbit plain brain thromboplastin (RP) with a lower ISI than CRM 149R and a rabbit brain thromboplastin combined with adsorbed bovine plasma (RC). Calibration of the latter two reagents was performed according to methods recommended by the World Health Organization (W. H. O.).The purpose of this study was to answer the following questions: 1) Is the calibration of the RC reagent more precise against the bovine/combined (OBT/79) than against the rabbit/plain reagent (CRM 149R)? 2) Is the precision of calibration influenced by the magnitude of the International Sensitivity Index (ISI)?The lowest inter-laboratory variation of ISI was observed in the calibration of the rabbit/plain reagent (RP) against the other rabbit/plain reagent (CRM 149R) (CV 1.6%). The highest interlaboratory variation was obtained in the calibration of rabbit/plain (RP) against bovine/combined (OBT/79) (CV 5.1%). In the calibration of the rabbit/combined (RC) reagent, there was no difference in precision between OBT/79 (CV 4.3%) and CRM 149R (CV 4.2%). Furthermore, there was no significant difference in the precision of the ISI of RC obtained with CRM 149R (ISI = 1.343) and the rabbit/plain (RP) reagent with ISI = 1.14. In conclusion, the calibration of RC could be performed with similar precision with either OBT/79 or CRM 149R, or RP.The mean ISI values calculated with OBT/79 and CRM 149R were practically identical, indicating that there is no bias in the ISI of these reference preparations and that these reference preparations have been stable since their original calibration studies in 1979 and 1987, respectively.International Normalized Ratio (INR) equivalents were calculated for a lyophilized control plasma derived from patients treated with oral anticoagulants. There were small but significant differences in the mean INR equivalents between the bovine and rabbit thromboplastins. There were no differences in the interlaboratory variation of the INR equivalents, when the four thromboplastins were compared.

A COMPARISON OF TWO METHODS FOR MEASUREMENT OF ALDOSTERONE SECRETION RATE IN MAN

1966 ◽  
Vol 53 (2) ◽  
pp. 177-188 ◽  
Author(s):  
P. Lund-Johansen ◽  
T. Thorsen ◽  
K. F. Støa
Keyword(s):  
Urinary Excretion ◽  
Normal Subjects ◽  
Secretion Rate ◽  
Aldosterone Secretion ◽  
Simple Method ◽  
Mean Values ◽  
Pathological Conditions ◽  
Significant Difference ◽  
Derivative Method ◽  
The Mean

ABSTRACT A comparison has been made between (A), a relatively simple method for the measurement of aldosterone secretion rate, based on paper chromatography and direct densitometry of the aldosterone spot and (B) a more elaborate isotope derivative method. The mean secretion rate in 9 normal subjects was 112 ± 26 μg per 24 hours (method A) and 135 ± 35 μg per 24 hours (method B). The »secretion rate« in one adrenalectomized subject after the intravenous injection of 250 μg of aldosterone was 230 μg per 24 hours (method A) and 294 μg per 24 hours (method B). There was no significant difference in the mean values, and correlation between the two methods was good (r = 0.80). It is concluded that the densitometric method is suitable for clinical purposes as well as research, being more rapid and less expensive than the isotope derivative method. Method A also measures the urinary excretion of the aldosterone 3-oxo-conjugate, which is of interest in many pathological conditions. The densitometric method is obviously the less sensitive and a prerequisite for its use is an aldosterone secretion of 20—30 μg per 24 hours. Lower values are, however, rare in adults.

CONCENTRADO PROTEICO OBTIDO DAS FOLHAS DE MANDIOCA (Manihot esculenta Crantz) DE TRÊS VARIEDADES COMERCIAIS.

2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Izabel Aparecida Soares ◽  
Mauro Sérgio Téo ◽  
Carlise DEBASTIANI ◽  
Suzymeire BARONI ◽  
Vanessa Silva RETUCI
Keyword(s):  
Manihot Esculenta ◽  
Crude Protein ◽  
Hydrocyanic Acid ◽  
Protein Concentrate ◽  
Manihot Esculenta Crantz ◽  
White Variety ◽  
Mean Values ◽  
Randomized Design ◽  
Significant Difference ◽  
The Mean

O trabalho teve por objetivo verificar diferenças entre rendimento do concentrado proteico e proteína bruta da folha da mandioca (Manihot esculenta Crantz), obtidos a partir de três variedades comerciais: branca, cascuda e vermelha. As manivas foram plantadas seguindo o delineamento experimental inteiramente casualizado com três repetições. Nas comparações entre as variedades, considerou coletas escalonadas pós-plantio, realizadas aos 12, 14 e 16 meses. O concentrado proteico foi obtido a partir da farinha das folhas inteiras e submetido ao método de termo - coagulação ácido e a proteína bruta pelo método padrão AOAC. Os dados foram submetidos a análise de variância e comparados pelo teste de Tukey - 5% de probabilidade. Os resultados não indicaram diferença significativa entre as médias obtidas para rendimento de concentrado proteico. Para a variável porcentagem de proteína bruta a variedade Branca foi a que apresentou maior valor, com média de 46,25%, seguida pela Cascuda e Vermelha, 44,52% e 37,30%, sucessivamente. Conclui-se que outros estudos devem avaliar condições que possam influenciar no teor de proteína foliar, como clima e solo, e, avaliar os níveis de ácido cianídrico de cada variedade, indicando qual das três é a melhor para a extração do concentrado proteico das folhas. Palavras chaves: Manihot esculenta Crantz, variedades comerciais, concentrado proteico, proteína bruta. ABSTRACT: The study aimed to assess the differences between income protein concentrate, crude protein of cassava leaf (Manihot esculenta Crantz), obtained from three commercial varieties: white, red and cascuda. The cuttings were planted following the completely randomized design with three replications. Comparisons between the varieties considered after planting staggered collections, held on 12, 14 and 16 months. The protein concentrate was obtained from flour of whole sheets and subjected to the term method - acid coagulation and crude protein by AOAC standard method. The data were submitted to ANOVA and Tukey test - 5% probability. The results indicated no significant difference between the mean values obtained for protein concentrate income. For the variable percentage of crude protein White variety showed the highest, with an average of 46.25%, followed by cascuda and Red, 44.52% and 37.30%, successively. We conclude that further studies should evaluate conditions that may affect the leaf protein content, such as climate and soil, and evaluate the hydrocyanic acid levels of each variety, indicating which of the three is the best for the extraction of protein concentrate from leaves Key words: Manihot esculenta Crantz, commercial varieties, protein concentrate, crude protein.

Caracterização da Peneira Média em Clones de Coffea canephora

REVISTA FIMCA ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 28-31
Author(s):  
Darlan Darlan Sanches Barbosa Alves ◽  
Victor Mouzinho Spinelli ◽  
Marcos Santana Moraes ◽  
Carolina Augusto De Souza ◽  
Rodrigo da Silva Ribeiro ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Block Design ◽  
Coffea Canephora ◽  
Coffee Production ◽  
Randomized Block Design ◽  
Significant Difference ◽  
The Mean ◽  
Four Blocks ◽  
Selection Of

Introdução: O estado de Rondônia se destaca como tradicional produtor de café, sendo o segundo maior produtor brasileiro de C. canephora. No melhoramento genético de C. canephora, a seleção de plantas de elevada peneira média está associada à bebida de qualidade superior. Objetivos: O objetivo desse estudo foi avaliar a variabilidade genética de clones de C. canephora para o tamanho dos grãos, mensurado a partir da avaliação da peneira média (PM). Materiais e Métodos: Para isso, foi conduzido ao longo de dois anos agrícolas experimento no campo experimental da Embrapa no município de Ouro Preto do Oeste-RO, para a avaliação da peneira média de 130 genótipos (clones) com características das variedades botânicas Conilon, Robusta e híbridos intervarietais. O delineamento experimental utilizado foi de blocos ao acaso, com quatro repetições de quatro plantas por parcela. Resultados: Não houve resultados significativos para a interação clones X anos, indicando uma maior consistência no comportamento das plantas ao longo do tempo. Porém foram observadas diferenças significativas para o tamanho dos grãos entre os genótipos avaliados, possibilitando selecionar genótipos superiores. Conclusão: Os genótipos agruparam-se em cinco classes de acordo com o teste de média, subsidiando a caracterização de um gradiente de variabilidade da característica avaliada ABSTRACTIntroduction: Coffea canephora accounts for approximately 35% of the world's coffee production. The state of Rondônia stands out as a traditional coffee producer, being the second largest Brazilian producer of C. canephora. In the classical genetic improvement of C. anephora, the selection of plants of high average sieve is associated with a drink of superior quality. Objectives: The objective of this udy was to evaluate the genetic variability of Coffea canephora clones for the agronomic medium sieve (PM). Materials and Methods: The experiment was conducted in the experimental field of Embrapa, municipality of OuroPreto do Oeste-RO, located at coordinates 10º44'53 "S and 62º12'57". One hundred thirty genotypes (clones) of botanical characteristics Conilon, Robusta and intervarietal hybrids were evaluated in the agricultural years 2013-2014 and 2014-2015. The experimental design was a randomized block design with four blocks and four plants per plot, spacing 3.5 x 1.5 meters between plants. Results: Significant difference was found for the grain size. According to the F test, at 5% probability, the genotypes were grouped into five classes according to the mean test. Conclusion: The results obtained subsidized the characterization of a variability gradient of the evaluated trait.

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