Nazly Datniza Duran Peñaranda, Monica Franco Gutiérrez, Henrique Guimarães Riva, José Flórez Gelvez
Objective. The aim of this study was to identify the prevalence of endoparasites and ectoparasites in ex situ snakes at the Barranquilla Zoo. Materials and Methods. Stool samples and ectoparasites of 2 colubrids (Leptophis ahaetulla and Spilotes pullatus), 2 diapsids (Oxybelys aeneus and Thamnodynastes paraguanae) and 13 boids (9 specimens of Boa constrictor, 2 of Epicrates maurus and 2 Eunectes murinus) were analyzed using flotation method in saturated sugar solution and direct observation. Results. The results showed that 65% (11/17) of the animals were positive to the presence of parasites. In relation to the positive specimens, 91% (10/11) belong to the Boidae family, presenting mostly nematodes, in the dipsadid’s samples mainly protozoans were observed and the colubrid’s samples were negative. Regarding ectoparasites, 2 species of ticks (Amblyomma dissimile and Ornothodoros turicata) were found in specimens of Boa constrictor, Epicrates maurus and Spilotes pullatus. Conclusions. The identification of parasites in this research represents a contribution to the study of parasitology in snakes ex situ in Colombia. It provides information to develop preventive measures against pathological agents and allows comparing results with other studies with animals in the wild and under human care.
{"title":"Prevalencia de endoparásitos y ectoparásitos en serpientes ex situ en Barranquilla, Colombia.","authors":"Nazly Datniza Duran Peñaranda, Monica Franco Gutiérrez, Henrique Guimarães Riva, José Flórez Gelvez","doi":"10.21897/rmvz.1537","DOIUrl":"https://doi.org/10.21897/rmvz.1537","url":null,"abstract":"Objective. The aim of this study was to identify the prevalence of endoparasites and ectoparasites in ex situ snakes at the Barranquilla Zoo. Materials and Methods. Stool samples and ectoparasites of 2 colubrids (Leptophis ahaetulla and Spilotes pullatus), 2 diapsids (Oxybelys aeneus and Thamnodynastes paraguanae) and 13 boids (9 specimens of Boa constrictor, 2 of Epicrates maurus and 2 Eunectes murinus) were analyzed using flotation method in saturated sugar solution and direct observation. Results. The results showed that 65% (11/17) of the animals were positive to the presence of parasites. In relation to the positive specimens, 91% (10/11) belong to the Boidae family, presenting mostly nematodes, in the dipsadid’s samples mainly protozoans were observed and the colubrid’s samples were negative. Regarding ectoparasites, 2 species of ticks (Amblyomma dissimile and Ornothodoros turicata) were found in specimens of Boa constrictor, Epicrates maurus and Spilotes pullatus. Conclusions. The identification of parasites in this research represents a contribution to the study of parasitology in snakes ex situ in Colombia. It provides information to develop preventive measures against pathological agents and allows comparing results with other studies with animals in the wild and under human care.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45745578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julio Mateo Flórez Murillo, Marcos De Jesús Hernández Pérez, Moris De Jesús Bustamante Yánez, Oscar David Vergara Garay
Etiope Colombian creole woolless sheep (OPC) have been suppliers of animal protein throughout years for peasant and indigenous people. However, the breed status of this animal genetic resource has not been agreed yet, which has favored to accentuate the menace produced by the introduction of foreign breeds since without clarity about the breed classification of Etiope and OPC in general, it is difficult to create awareness among farmers about what they should conserve, improve and why. The objective of this research was to describe morphologically and phaneroptically Etiope OPC, for contributing with its suitable characterization and breed classification. This study was developed in nine farms which were located in the Cordoba and Bolivar Departaments (Colombia), six phaneroptical traits and seven morphological qualitative characteristics were evaluated in 92 ewes. The assessment of these characteristics was made by direct observation with the support of a photographic camera and a digital goniometer. Data analysis was made through the estimation of absolute and relative frequency with the software InfoStat®. Etiopes were generally dark red (43.48%) or very dark red (44.57%) coat color, black-rosy mucosae (93.48%), horizontally oriented ears (100%), sub-convex cephalic profile (72.83%), potbellied (81.52%), inclined rump (86.96%), marbled hooves (81.32%), with occasional wattle presences (24.28%) and pigmented udders (13.19%). In conclusion, this description focused on Etiope sheep, and elaborated minutely, provided elements which help to define the traits which determine the belonging to this ethnic group as well as they help to reach a consensus on the appropriate breed classification of these autochthonous ovines.
{"title":"Caracterización morfológica y faneróptica de hembras Ovino de Pelo Criollo Colombiano “OPC” Sudán","authors":"Julio Mateo Flórez Murillo, Marcos De Jesús Hernández Pérez, Moris De Jesús Bustamante Yánez, Oscar David Vergara Garay","doi":"10.21897/rmvz.1263","DOIUrl":"https://doi.org/10.21897/rmvz.1263","url":null,"abstract":"Etiope Colombian creole woolless sheep (OPC) have been suppliers of animal protein throughout years for peasant and indigenous people. However, the breed status of this animal genetic resource has not been agreed yet, which has favored to accentuate the menace produced by the introduction of foreign breeds since without clarity about the breed classification of Etiope and OPC in general, it is difficult to create awareness among farmers about what they should conserve, improve and why. The objective of this research was to describe morphologically and phaneroptically Etiope OPC, for contributing with its suitable characterization and breed classification. This study was developed in nine farms which were located in the Cordoba and Bolivar Departaments (Colombia), six phaneroptical traits and seven morphological qualitative characteristics were evaluated in 92 ewes. The assessment of these characteristics was made by direct observation with the support of a photographic camera and a digital goniometer. Data analysis was made through the estimation of absolute and relative frequency with the software InfoStat®. Etiopes were generally dark red (43.48%) or very dark red (44.57%) coat color, black-rosy mucosae (93.48%), horizontally oriented ears (100%), sub-convex cephalic profile (72.83%), potbellied (81.52%), inclined rump (86.96%), marbled hooves (81.32%), with occasional wattle presences (24.28%) and pigmented udders (13.19%). In conclusion, this description focused on Etiope sheep, and elaborated minutely, provided elements which help to define the traits which determine the belonging to this ethnic group as well as they help to reach a consensus on the appropriate breed classification of these autochthonous ovines.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45595281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adonai Alejandro Amaya-Martínez, Rodrigo Martínez S., M. Cerón-Muñoz
Objective. To estimate genetic parameters for weight at eight months of age (W8M), age at first calving (AFC) and first calving interval (FCI) using pedigree and genomic relationship. Materials and methods. Phenotypic data on 481, 3063 and 1098 animals for W8M, AFC and FCI were used, respectively. The genomic information came from a population of 718 genotyped animals with a density chip of 30,106 single nucleotide polymorphism markers (SNP). Univariate and bivariate models were used under the conventional (BLUP) and single step genomic best linear unbiased predictor (ssGBLUP) methodologies. Results. The heritabilities for W8M, AFC and FCI ranged from 0.25 to 0.26, from 0.20 to 0.22 and from 0.04 to 0.08, respectively. The AFC and FCI models under ssGBLUP slightly decreased the error and increased the additive genetic variance, respectively. Conclusions. The inclusion of genomic information slightly increases the accuracy of the genetic estimates in this population. However, a larger amount of genotyped animals and with a higher genetic relationship connectivity would allow breeders to increase the potential of the ssGBLUP methodology in Colombian Simmental cattle.
{"title":"Genetic parameters for growth and reproduction in Simmental cattle from pedigree and genomic relationship","authors":"Adonai Alejandro Amaya-Martínez, Rodrigo Martínez S., M. Cerón-Muñoz","doi":"10.21897/rmvz.1520","DOIUrl":"https://doi.org/10.21897/rmvz.1520","url":null,"abstract":"Objective. To estimate genetic parameters for weight at eight months of age (W8M), age at first calving (AFC) and first calving interval (FCI) using pedigree and genomic relationship. Materials and methods. Phenotypic data on 481, 3063 and 1098 animals for W8M, AFC and FCI were used, respectively. The genomic information came from a population of 718 genotyped animals with a density chip of 30,106 single nucleotide polymorphism markers (SNP). Univariate and bivariate models were used under the conventional (BLUP) and single step genomic best linear unbiased predictor (ssGBLUP) methodologies. Results. The heritabilities for W8M, AFC and FCI ranged from 0.25 to 0.26, from 0.20 to 0.22 and from 0.04 to 0.08, respectively. The AFC and FCI models under ssGBLUP slightly decreased the error and increased the additive genetic variance, respectively. Conclusions. The inclusion of genomic information slightly increases the accuracy of the genetic estimates in this population. However, a larger amount of genotyped animals and with a higher genetic relationship connectivity would allow breeders to increase the potential of the ssGBLUP methodology in Colombian Simmental cattle.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42130250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. P. Barajas Pardo, Karl Adolf Ciouderis, Darío Cárdenas García, Agustín Góngora Orjuela, Jorge Emilio Osorio Benítez, Camilo Ernesto Pacheco Pérez, Néstor Ismael Monroy Ochoa, Gloria Derly Tova Bohórquez
Objective. Identify the presence of West Nile virus in horses and mosquitoes in eight municipalities of the department of Meta. Materials and methods. The research was supported by the Bioethics Committee of the University of Los Llanos. 613 samples of Creole and quarter-mile equine horses, intended for sports and work activities, with an age range of 2 to 15 years, were analyzed using serological and molecular tests in the transects: Villavicencio-Restrepo-Cumaral, San Martin- Castilla la Nueva-Granada and Puerto Lopez-Puerto Gaitan, analyzed in 62 pools and 213 mosquitoes. The pool of sera of horses and mosquitoes were analyzed by ELISA and PCR. Results. No seropositive animals were found by the ELISA test and molecular tests were also negative. Conclusions. Although in this study the presence of IgM antibodies was not evidenced by the Elisa technique, and molecular tests (RT-PCR) were also negative for viral circulation, in the municipalities under study, it is important to indicate that the molecular detection in sera, it requires representative levels of viremia and that the animal is in the acute phase of the disease. Although it is possible that the equine population remains free of contact with the virus, epidemiological surveillance should be maintained against this important pathogen for human health, especially due to the outbreak of other zoonotic viruses such as Eastern Equine Encephalitis and Encephalitis Venezuelan Equine in the departments of Meta and Casanare, adjacent to this.
{"title":"Vigilancia epidemiológica al virus del Oeste del Nilo en municipios del Departamento del Meta","authors":"D. P. Barajas Pardo, Karl Adolf Ciouderis, Darío Cárdenas García, Agustín Góngora Orjuela, Jorge Emilio Osorio Benítez, Camilo Ernesto Pacheco Pérez, Néstor Ismael Monroy Ochoa, Gloria Derly Tova Bohórquez","doi":"10.21897/rmvz.1252","DOIUrl":"https://doi.org/10.21897/rmvz.1252","url":null,"abstract":"Objective. Identify the presence of West Nile virus in horses and mosquitoes in eight municipalities of the department of Meta. Materials and methods. The research was supported by the Bioethics Committee of the University of Los Llanos. 613 samples of Creole and quarter-mile equine horses, intended for sports and work activities, with an age range of 2 to 15 years, were analyzed using serological and molecular tests in the transects: Villavicencio-Restrepo-Cumaral, San Martin- Castilla la Nueva-Granada and Puerto Lopez-Puerto Gaitan, analyzed in 62 pools and 213 mosquitoes. The pool of sera of horses and mosquitoes were analyzed by ELISA and PCR. Results. No seropositive animals were found by the ELISA test and molecular tests were also negative. Conclusions. Although in this study the presence of IgM antibodies was not evidenced by the Elisa technique, and molecular tests (RT-PCR) were also negative for viral circulation, in the municipalities under study, it is important to indicate that the molecular detection in sera, it requires representative levels of viremia and that the animal is in the acute phase of the disease. Although it is possible that the equine population remains free of contact with the virus, epidemiological surveillance should be maintained against this important pathogen for human health, especially due to the outbreak of other zoonotic viruses such as Eastern Equine Encephalitis and Encephalitis Venezuelan Equine in the departments of Meta and Casanare, adjacent to this.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42330920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dumar Alexander Jaramillo Hernández, Angélica González Reina, Natalia Pedraza Castillo, Jorge Iván Sierra Acevedo, G. G. García Martínez, Ricardo Jara Agudelo
Objective. The acaricidal activity of Momordica charantia (Mc), Megaskepasma erythrochlamys (Me) and Gliricidia sepium (Gs) on Rhipicephalus microplus (Rm) was evaluated. Materials and methods. Preliminary phytochemical analysis of leaves of the methanolic extract of Mc (EMc), the ethanolic extract of Me (EMe) and the acetone extract of Gs (EGs) were carried out through the technique of colorimetry and thin layer chromatography (CCD). The acaricidal activity was performed through in-vitro tests using the larval immersion test (LIT) and the adult immersion test (AIT). For in-situ tests, grazing cattle naturally infested with ticks were used, using the LC50 obtained from the in-vitro AIT tests; later the teleogines were taken to incubation to evaluate their reproductive capacity. Results. The presence of several groups of secondary metabolites of acaricidal interest was determined. The acaricidal effect of the extracts of the plants on teleogines was demonstrated; although only EGs showed larvicidal activity. Extracts at 160 mg/mL affected the life cycle of Rm by inhibiting ovoposition in 46.9%, 66.1% and 84.03% (p<0.05) for EGs, EMc and EMe, respectively. On the other hand, the in-situ tests showed a significant difference (p<0.05) between the treatment of EMc and EMe with respect to the control groups. Conclusions. The results obtained are promising to strengthen the possibility of linking the extracts of these plants into integrated plans for the control of ticks in cattle systems.
{"title":"Evaluación del efecto acaricida de Momordica charantia, Megaskepasma erythrochlamys y Gliricidia sepium sobre Rhipicephalus microplus","authors":"Dumar Alexander Jaramillo Hernández, Angélica González Reina, Natalia Pedraza Castillo, Jorge Iván Sierra Acevedo, G. G. García Martínez, Ricardo Jara Agudelo","doi":"10.21897/rmvz.1951","DOIUrl":"https://doi.org/10.21897/rmvz.1951","url":null,"abstract":"Objective. The acaricidal activity of Momordica charantia (Mc), Megaskepasma erythrochlamys (Me) and Gliricidia sepium (Gs) on Rhipicephalus microplus (Rm) was evaluated. Materials and methods. Preliminary phytochemical analysis of leaves of the methanolic extract of Mc (EMc), the ethanolic extract of Me (EMe) and the acetone extract of Gs (EGs) were carried out through the technique of colorimetry and thin layer chromatography (CCD). The acaricidal activity was performed through in-vitro tests using the larval immersion test (LIT) and the adult immersion test (AIT). For in-situ tests, grazing cattle naturally infested with ticks were used, using the LC50 obtained from the in-vitro AIT tests; later the teleogines were taken to incubation to evaluate their reproductive capacity. Results. The presence of several groups of secondary metabolites of acaricidal interest was determined. The acaricidal effect of the extracts of the plants on teleogines was demonstrated; although only EGs showed larvicidal activity. Extracts at 160 mg/mL affected the life cycle of Rm by inhibiting ovoposition in 46.9%, 66.1% and 84.03% (p<0.05) for EGs, EMc and EMe, respectively. On the other hand, the in-situ tests showed a significant difference (p<0.05) between the treatment of EMc and EMe with respect to the control groups. Conclusions. The results obtained are promising to strengthen the possibility of linking the extracts of these plants into integrated plans for the control of ticks in cattle systems.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48627400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Victoria Matilde Cazanga Reyes, Jessie Ana Jeldres Ortiz, Cristina Judith Palma ibáñez, José Belarmino Riquelme Acuña, Diego Luis Cornejo Díaz, Rubén Pérez Fernández
Objective. The aim of this study was to compare tissue and plasma concentrations of florfenicol (FFC) and its metabolite florfenicol amine (FFC-a) between sheep and rabbits, after intramuscular administration of 20 mg FFC/kg. Materials and methods. Five Suffolk Down sheep and six New Zealand rabbits were used in this study. Blood samples were collected before FFC administration and at 0.25, 0.5, 1, 1.5, 2, 3 and 4 hours after treatment. At 4 hours after treatment, euthanasia was applied to animals. Plasma and tissue concentrations of FFC and FFC-a were determined by HPLC. Results. For FFC, maximum plasma concentrations, absorption rate, absorption half-life, distribution rate, and area under the plasma concentration-time curve were all found to be significantly higher in rabbits than in sheep. Similarly, for FFC-a, significantly higher maximum plasma concentrations and area under the concentration-time curve were observed in rabbits as compared to sheep. The metabolite ratio was higher in rabbits (12.7±3.07%) compared to sheep (3.99±0.87%) (p<0.05), as were the tissue concentrations of FFC and FFC-a. Conclusions. Significant differences in the pharmacokinetics and tissue concentrations of FFC, and its metabolite FFC-a, were observed between these two animal species. The higher concentrations of FFC-a in rabbits indicate a greater level of FFC metabolism as compared to sheep. This should be considered when establishing dosage and frequency of FFC administration for rabbits.
{"title":"Diferencias de especie en las concentraciones plasmáticas y tisulares de florfenicol entre ovinos y conejos","authors":"Victoria Matilde Cazanga Reyes, Jessie Ana Jeldres Ortiz, Cristina Judith Palma ibáñez, José Belarmino Riquelme Acuña, Diego Luis Cornejo Díaz, Rubén Pérez Fernández","doi":"10.21897/rmvz.1699","DOIUrl":"https://doi.org/10.21897/rmvz.1699","url":null,"abstract":"Objective. The aim of this study was to compare tissue and plasma concentrations of florfenicol (FFC) and its metabolite florfenicol amine (FFC-a) between sheep and rabbits, after intramuscular administration of 20 mg FFC/kg. Materials and methods. Five Suffolk Down sheep and six New Zealand rabbits were used in this study. Blood samples were collected before FFC administration and at 0.25, 0.5, 1, 1.5, 2, 3 and 4 hours after treatment. At 4 hours after treatment, euthanasia was applied to animals. Plasma and tissue concentrations of FFC and FFC-a were determined by HPLC. Results. For FFC, maximum plasma concentrations, absorption rate, absorption half-life, distribution rate, and area under the plasma concentration-time curve were all found to be significantly higher in rabbits than in sheep. Similarly, for FFC-a, significantly higher maximum plasma concentrations and area under the concentration-time curve were observed in rabbits as compared to sheep. The metabolite ratio was higher in rabbits (12.7±3.07%) compared to sheep (3.99±0.87%) (p<0.05), as were the tissue concentrations of FFC and FFC-a. Conclusions. Significant differences in the pharmacokinetics and tissue concentrations of FFC, and its metabolite FFC-a, were observed between these two animal species. The higher concentrations of FFC-a in rabbits indicate a greater level of FFC metabolism as compared to sheep. This should be considered when establishing dosage and frequency of FFC administration for rabbits.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43809792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ángel Ríos Utrera, Eugenio Villagómez Amezcua Manjarrez, J. P. Zárate Martínez, René Carlos Calderón Robles, Vicente Eliezer Vega Murillo
Objective. Compare the fertility of Brown Swiss x Zebu and Simmental x Zebu crossbred cows reared in a tropical environment. Materials and methods. Reproductive traits of 185 Brown Swiss x Zebu and Simmental x Zebu crossbred cows with diverse percentages of European breed were evaluated. Grazing of cows was rotational. The milking was twice daily with the help (suckling) of the calf, which was kept tied next to the dam while she was milked. Traits were evaluated fitting a repeated measures model (except for age at first calving). Calving interval, age at first calving, days open, interval from calving to first service, and weight at calving were analyzed with PROC MIXED of SAS. Pregnancy rate at first service and services per conception were analyzed with PROC GENMOD of the same software. Results. Simmental x Zebu cows started to re-bred 39 days earlier after calving (p<0.05) and had 47 fewer days open (p<0.05) than Brown Swiss x Zebu cows. The calving interval of the Simmental x Zebu cows was 45 days shorter (p<0.05) than that of the Brown Swiss x Zebu cows. Simmental x Zebu cows were 34 kg heavier at calving (p<0.05) than Brown Swiss x Zebu cows. Conclusions. Simmental x Zebu cows had better fertility than Brown Swiss x Zebu cows.
客观的比较在热带环境中饲养的Brown Swiss x Zebu和Simmental x Zebu杂交奶牛的生育能力。材料和方法。对185头不同比例的欧洲品种的Brown Swiss x Zebu和Simmental x Zebu杂交奶牛的繁殖特性进行了评价。轮流放牧奶牛。在小牛的帮助下，每天挤奶两次，小牛在挤奶时被捆在水坝旁边。根据重复测量模型对性状进行评估（除了第一次产仔时的年龄）。用SAS的PROC-MIXED分析产仔间隔、首次产仔年龄、开放天数、从产仔到首次服务的间隔和产仔时的体重。使用同一软件的PROC GENMOD分析首次服务的妊娠率和每次受孕的服务。后果西门塔尔x泽布奶牛在产仔后提前39天开始重新繁殖（p<0.05），与棕色瑞士x泽布牛相比，开放天数减少了47天（p<0.05）。西门塔尔x斑马奶牛的产仔间隔比棕色瑞士x斑马奶牛短45天（p<0.05）。西门塔尔x泽布奶牛在产仔时比棕色瑞士x泽布牛重34公斤（p＜0.05）。结论。西门塔尔x泽布奶牛比棕色瑞士x泽布牛具有更好的生育能力。
{"title":"Análisis reproductivo de vacas Suizo Pardo x Cebú y Simmental x Cebú en condiciones tropicales","authors":"Ángel Ríos Utrera, Eugenio Villagómez Amezcua Manjarrez, J. P. Zárate Martínez, René Carlos Calderón Robles, Vicente Eliezer Vega Murillo","doi":"10.21897/rmvz.1637","DOIUrl":"https://doi.org/10.21897/rmvz.1637","url":null,"abstract":"Objective. Compare the fertility of Brown Swiss x Zebu and Simmental x Zebu crossbred cows reared in a tropical environment. Materials and methods. Reproductive traits of 185 Brown Swiss x Zebu and Simmental x Zebu crossbred cows with diverse percentages of European breed were evaluated. Grazing of cows was rotational. The milking was twice daily with the help (suckling) of the calf, which was kept tied next to the dam while she was milked. Traits were evaluated fitting a repeated measures model (except for age at first calving). Calving interval, age at first calving, days open, interval from calving to first service, and weight at calving were analyzed with PROC MIXED of SAS. Pregnancy rate at first service and services per conception were analyzed with PROC GENMOD of the same software. Results. Simmental x Zebu cows started to re-bred 39 days earlier after calving (p<0.05) and had 47 fewer days open (p<0.05) than Brown Swiss x Zebu cows. The calving interval of the Simmental x Zebu cows was 45 days shorter (p<0.05) than that of the Brown Swiss x Zebu cows. Simmental x Zebu cows were 34 kg heavier at calving (p<0.05) than Brown Swiss x Zebu cows. Conclusions. Simmental x Zebu cows had better fertility than Brown Swiss x Zebu cows.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48523869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objective. Characterize and associate the FecB polymorphism with the natural prolificacy in the biotypes of Colombian Creole Sheep (OPC) Etiope and Sudan. Materials and methods. At 300 births from 167 OPC sheep, from the biotypes, Sudan (n = 73) and Etiope (n = 94), the effect of the FecB genotype was measured, and of the non-genetic factors: number of parturitions of the mother, the father, the season and the year of conception. For this, the animals were genotyped by PCR-RFLP (AvaII) for FecB and the productive records of the herd analyzed. The allelic and genotypic frequencies were calculated, which, together with the non-genetic factors, were associated with litter size using a fixed-effect GLM model. Results. The FecBB allele presented lower frequency (0.379±0.152) than the FecB+ allele (0.622±0.152) for the whole OPC. These frequencies varied (p<0.05) between biotypes (Sudan: 0.486, Etiope: 0.271), the same occurred with the FecBBB genotype (0.078 in Etiope and 0.236 in Sudan). The FecB++ genotype was more frequent in Etiope (0.526) and the heterozygous genotype in Sudan (0.5) and for the OPC (0.448±0.070). No significant differences were found between biotypes for non-genetic factors. The prolificacy varied (p<0.05) between biotypes (1.45±0.22 in Etiope and 1.34±0.03 in Sudan), with an average of 1.40±0.11 for the OPC. Conclusions. The lucus studied was polymorphic. The litter size was not affected by non-genetic factors or the FecB genotype. These results can be used in assisted selection plans to increase OPC productivity. .
{"title":"Asociación del polimorfismo FecB con la prolificidad natural del Ovino de Pelo Colombiano","authors":"D. Hernández H, D. Montes V, J. De la Ossa V","doi":"10.21897/rmvz.1771","DOIUrl":"https://doi.org/10.21897/rmvz.1771","url":null,"abstract":"Objective. Characterize and associate the FecB polymorphism with the natural prolificacy in the biotypes of Colombian Creole Sheep (OPC) Etiope and Sudan. Materials and methods. At 300 births from 167 OPC sheep, from the biotypes, Sudan (n = 73) and Etiope (n = 94), the effect of the FecB genotype was measured, and of the non-genetic factors: number of parturitions of the mother, the father, the season and the year of conception. For this, the animals were genotyped by PCR-RFLP (AvaII) for FecB and the productive records of the herd analyzed. The allelic and genotypic frequencies were calculated, which, together with the non-genetic factors, were associated with litter size using a fixed-effect GLM model. Results. The FecBB allele presented lower frequency (0.379±0.152) than the FecB+ allele (0.622±0.152) for the whole OPC. These frequencies varied (p<0.05) between biotypes (Sudan: 0.486, Etiope: 0.271), the same occurred with the FecBBB genotype (0.078 in Etiope and 0.236 in Sudan). The FecB++ genotype was more frequent in Etiope (0.526) and the heterozygous genotype in Sudan (0.5) and for the OPC (0.448±0.070). No significant differences were found between biotypes for non-genetic factors. The prolificacy varied (p<0.05) between biotypes (1.45±0.22 in Etiope and 1.34±0.03 in Sudan), with an average of 1.40±0.11 for the OPC. Conclusions. The lucus studied was polymorphic. The litter size was not affected by non-genetic factors or the FecB genotype. These results can be used in assisted selection plans to increase OPC productivity. \u0000.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42936827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Danays Palacio Collado, José Bertot Valdés, Marcelo Beltrao Molento, Ángel Vázquez Gil, Ramón Ortíz Vázquez, Carlos Fortune Nápoles Fortune Nápoles
Objective. To determine the economic losses resulting from condemnation of affected livers and the presence of Fasciola hepatica in slaughtered cattle in the provinces of Camaguey and Holguin, Cuba. Materials and Methods. This study was based on the results from an anatomo-pathological examination performed at Felipe Fuentes and Cesar Escalante slaughterhouses between January 2012 and December 2018. The losses, which totaled $ 80 312 USD (Holguin) and $ 327 152 USD (Camaguey), were estimated from the number of slaughtered and affected animals throughout the period. Analyses for the comparisons of proportions were made to animals affected by F.hepatica, whereas the economic losses due to liver condemnation were analyzed by Chi-square to determine the existence of significant differences among the proportions. Analysis of means (ANOM) was made to determine the significantly different proportions within the general average. Results. Significant differences (p<0.001) were observed in animals from different slaughterhouses in 11 months, excluding July. Meanwhile, the total losses due to condemnation of affected livers underwent significant differences (p<0.001) in all the months of the evaluation period. Conclusions. The highest values of economic losses and prevalence due to condemnation of livers affected by F.hepatica were observed in the province of Camaguey, which may have been linked to varying climatic conditions. Hence, evaluation of intermediary host dynamics and the larval stages of the trematode in the two provinces studied were recommended.
{"title":"Pérdidas económicas y prevalencia de Fasciola hepaticaen bovinos sacrificados en dos provincias cubanas","authors":"Danays Palacio Collado, José Bertot Valdés, Marcelo Beltrao Molento, Ángel Vázquez Gil, Ramón Ortíz Vázquez, Carlos Fortune Nápoles Fortune Nápoles","doi":"10.21897/rmvz.1610","DOIUrl":"https://doi.org/10.21897/rmvz.1610","url":null,"abstract":"Objective. To determine the economic losses resulting from condemnation of affected livers and the presence of Fasciola hepatica in slaughtered cattle in the provinces of Camaguey and Holguin, Cuba. Materials and Methods. This study was based on the results from an anatomo-pathological examination performed at Felipe Fuentes and Cesar Escalante slaughterhouses between January 2012 and December 2018. The losses, which totaled $ 80 312 USD (Holguin) and $ 327 152 USD (Camaguey), were estimated from the number of slaughtered and affected animals throughout the period. Analyses for the comparisons of proportions were made to animals affected by F.hepatica, whereas the economic losses due to liver condemnation were analyzed by Chi-square to determine the existence of significant differences among the proportions. Analysis of means (ANOM) was made to determine the significantly different proportions within the general average. Results. Significant differences (p<0.001) were observed in animals from different slaughterhouses in 11 months, excluding July. Meanwhile, the total losses due to condemnation of affected livers underwent significant differences (p<0.001) in all the months of the evaluation period. Conclusions. The highest values of economic losses and prevalence due to condemnation of livers affected by F.hepatica were observed in the province of Camaguey, which may have been linked to varying climatic conditions. Hence, evaluation of intermediary host dynamics and the larval stages of the trematode in the two provinces studied were recommended.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46087966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jesús Enrique EK MEX, Erika Abigail Reyes González, Alejandro Alzina López, J. C. Segura Correa
Objectives. To estimate the lifetime non-productive days (NPD), lifetime proportion of NPD (%NPD) and non-productive days per sow per year (NPD/Y), and to determine the effect of herd and sow level factors on the traits here studied in three pig farms in the Mexican tropics. Materials and methods. Data from 6703 sows from three commercial farms were used. The model that described the traits studied comprise the fixed effects of farm, year and season of first farrowing, age at first parity, reasons of removal of sows, year x season interaction and the residual error. Results. The means for lifetime NPD, %NPD and NPD/Y were 64 days, 12.0% and 39.3 days, respectively. All fixed factors had significant effects (p<0.01) on the characteristics evaluated. Sows having their first parity at an old age and sows culled because of reproductive reasons had the highest lifetime NPD. In addition, sows culled at first parity had lower lifetime NPD and higher %NPD than sows culled in subsequent farrowing. Conclusions. The early culling of sows increased the percentage of non-productive days, which in turn is expected to reduce the profit of farms.
{"title":"Factores ambientales asociados con los días no-productivos de cerdas en el trópico mexicano","authors":"Jesús Enrique EK MEX, Erika Abigail Reyes González, Alejandro Alzina López, J. C. Segura Correa","doi":"10.21897/rmvz.1615","DOIUrl":"https://doi.org/10.21897/rmvz.1615","url":null,"abstract":"Objectives. To estimate the lifetime non-productive days (NPD), lifetime proportion of NPD (%NPD) and non-productive days per sow per year (NPD/Y), and to determine the effect of herd and sow level factors on the traits here studied in three pig farms in the Mexican tropics. Materials and methods. Data from 6703 sows from three commercial farms were used. The model that described the traits studied comprise the fixed effects of farm, year and season of first farrowing, age at first parity, reasons of removal of sows, year x season interaction and the residual error. Results. The means for lifetime NPD, %NPD and NPD/Y were 64 days, 12.0% and 39.3 days, respectively. All fixed factors had significant effects (p<0.01) on the characteristics evaluated. Sows having their first parity at an old age and sows culled because of reproductive reasons had the highest lifetime NPD. In addition, sows culled at first parity had lower lifetime NPD and higher %NPD than sows culled in subsequent farrowing. Conclusions. The early culling of sows increased the percentage of non-productive days, which in turn is expected to reduce the profit of farms.","PeriodicalId":49598,"journal":{"name":"Revista Mvz Cordoba","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47670044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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