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1.
Article in Portuguese | VETINDEX | ID: biblio-1494306

ABSTRACT

Com o objetivo de avaliar o comportamento de indicadores da eficiência reprodutiva em fêmeas bovinas em sistema de cria extensiva e monta controlada, avaliaram-se os dados dos controles de 92 vacas do município da Cahama da província do Cunene. Para a análise estatística criou-se uma base de dados no Programa Microsoft Office Excel 2013; obtiveram-se as estatísticas simples e agruparam-se os dados pelos pesos de incorporação das vacas à monta, em 4 grupos: I) 221-250 Kg, II) 251-280 Kg, III) 281-320 Kg e IV) >321 Kg; os dados processaram-se mediante análise de variância e comparação de médias por Prova de Tukey para as variáveis: Peso ao Primeiro Serviço (PPS), Período de Serviço (PS), Duração da Gestação (DG), Período Entre Partos (PEP), Idade da Vaca (IV) e Número de Crias (NC). Realizaram-se análise de correlação entre as variáveis: PPS, PS, DG, PEP, IV e NC. Observou-se diferenças (p<0,001) nos PPS, sendo os valores de 236,93±0,74; 236,93±0,74; 306,25±2,89 e 348,89±10,98 Kg para os grupos I, II, III, IV, respectivamente; mas não houve diferenças no PS (77,60±0,99 dias), DG (280,73±0,32 dias), PEP (357,39±0,99 dias) e IV (7,74±0,17 anos) nos diferentes grupos de pesos de incorporação das vacas à monta. Enquanto o NC variou entre 4,47±0,27 e 4,70±0,08 bezerros por vaca. Conclui-se que a eficiência reprodutiva das vacas, avaliadas pelo período de serviço, período entre partos e número médio de crias por vacas é satisfatória.


In order to evaluate the behavior of indicators of reproductive efficiency in bovine females in a system of extensive breeding and controlled mating, the data of the controls of 92 cows of the municipality of Cahama in Cunene Province were evaluated. For the statistical analysis a database was created in the Microsoft Office Excel 2013 Program; the simple statistics were obtained and the data were grouped by the incorporation weights of the cows to be mate into 4 groups: I) 221-250 kg, II) 251-280 kg, III) 281-320 kg and IV)> 321 Kg; the data were processed through analysis of variance and comparison of means by Tukey's test for the following variables: Weight at the First Service (WFS), Period of Service (PS), Duration of Gestation (DG), Period Between child-Birth (PBC), Age of the Cow (AC) and Number of heifer (NH). Correlation analysis was performed among the investigated variables. Differences (p <0.001) were observed in WFS, with values of 236.93 ± 0.74; 260.40 ± 2.0; 306.25 ± 2.89 and 348.89 ± 10.98 kg for groups I, II, III, IV, respectively; but there were no differences in PS (77.60 ± 0.99 days) and DG (280.73 ± 0.32 days) between the different groups; the mean PBC was 357.39 ± 0.99 days. The NH varied between 4.47 ± 0.27 and 4.70 ± 0.08 heifer per cow. The correlation analysis showed coefficients (p <0.01) among WFS, PBC and AC (r = 0.79-0.92) and between PBC, PS and AC (r = 0.84). It is concluded that the reproductive efficiency of the cows, evaluated by the period of service, period between calving and the average number of heifer by cows, is satisfactory.


Subject(s)
Female , Animals , Cattle , Biological Factors , Pregnancy, Animal , Reproduction/physiology , Litter Size
2.
R. cient. eletr. Med. Vet. ; (31)jul. 2018. tab
Article in Portuguese | VETINDEX | ID: vti-738124

ABSTRACT

Com o objetivo de avaliar o comportamento de indicadores da eficiência reprodutiva em fêmeas bovinas em sistema de cria extensiva e monta controlada, avaliaram-se os dados dos controles de 92 vacas do município da Cahama da província do Cunene. Para a análise estatística criou-se uma base de dados no Programa Microsoft Office Excel 2013; obtiveram-se as estatísticas simples e agruparam-se os dados pelos pesos de incorporação das vacas à monta, em 4 grupos: I) 221-250 Kg, II) 251-280 Kg, III) 281-320 Kg e IV) >321 Kg; os dados processaram-se mediante análise de variância e comparação de médias por Prova de Tukey para as variáveis: Peso ao Primeiro Serviço (PPS), Período de Serviço (PS), Duração da Gestação (DG), Período Entre Partos (PEP), Idade da Vaca (IV) e Número de Crias (NC). Realizaram-se análise de correlação entre as variáveis: PPS, PS, DG, PEP, IV e NC. Observou-se diferenças (p<0,001) nos PPS, sendo os valores de 236,93±0,74; 236,93±0,74; 306,25±2,89 e 348,89±10,98 Kg para os grupos I, II, III, IV, respectivamente; mas não houve diferenças no PS (77,60±0,99 dias), DG (280,73±0,32 dias), PEP (357,39±0,99 dias) e IV (7,74±0,17 anos) nos diferentes grupos de pesos de incorporação das vacas à monta. Enquanto o NC variou entre 4,47±0,27 e 4,70±0,08 bezerros por vaca. Conclui-se que a eficiência reprodutiva das vacas, avaliadas pelo período de serviço, período entre partos e número médio de crias por vacas é satisfatória.(AU)


In order to evaluate the behavior of indicators of reproductive efficiency in bovine females in a system of extensive breeding and controlled mating, the data of the controls of 92 cows of the municipality of Cahama in Cunene Province were evaluated. For the statistical analysis a database was created in the Microsoft Office Excel 2013 Program; the simple statistics were obtained and the data were grouped by the incorporation weights of the cows to be mate into 4 groups: I) 221-250 kg, II) 251-280 kg, III) 281-320 kg and IV)> 321 Kg; the data were processed through analysis of variance and comparison of means by Tukey's test for the following variables: Weight at the First Service (WFS), Period of Service (PS), Duration of Gestation (DG), Period Between child-Birth (PBC), Age of the Cow (AC) and Number of heifer (NH). Correlation analysis was performed among the investigated variables. Differences (p <0.001) were observed in WFS, with values of 236.93 ± 0.74; 260.40 ± 2.0; 306.25 ± 2.89 and 348.89 ± 10.98 kg for groups I, II, III, IV, respectively; but there were no differences in PS (77.60 ± 0.99 days) and DG (280.73 ± 0.32 days) between the different groups; the mean PBC was 357.39 ± 0.99 days. The NH varied between 4.47 ± 0.27 and 4.70 ± 0.08 heifer per cow. The correlation analysis showed coefficients (p <0.01) among WFS, PBC and AC (r = 0.79-0.92) and between PBC, PS and AC (r = 0.84). It is concluded that the reproductive efficiency of the cows, evaluated by the period of service, period between calving and the average number of heifer by cows, is satisfactory.(AU)


Subject(s)
Animals , Female , Cattle , Reproduction/physiology , Pregnancy, Animal , Litter Size , Biological Factors
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