Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality
The reproductive performance of 50 adult SRD does maintained in native caatinga pasture at a stocking rate of 1 to 1.5 ha/head/year was evaluated. Two bucks were used in natural matings from September 1978 until December 1980. A total of 93 kiddings and 28 abortions occurred. Three pregnancies occurred before initiation of the experiment. From the 90 parturitions, 57.7%, 35.6%, 1.1% and 5.6% bore singles, twins, triplets and undetermined, respectively. The flock showed an overall prolificacy of 1.38. From the initial flock, 15 (30%), 28 (56%), 5 (10%) and 2 (4%) does presented one, two, three and zero kiddings, respectively, during the period of study. Neither gestation length nor kidding interval were influenced by type of birth. Length of open period was influenced by season of the year when data were classified by season and kidding status at the open period. Combination of kidding type at previous and following kiddings showed a significant influence (P < 0.05) on the length of the open period. Animals that kidded first singles and then singles or twins showed a shorter open period than animals that firstly kidded twins and then aborted at the following pregnancy (109 vs 188 days). The peak of kid mortality occurred between 7 and 112 days of age. Kid mortality appears not to be influenced by sex or type of birth. Overall kid mortality was 76%. The age at death of kids was influenced by season and sex as well as by their interaction. Males born during the rainy season survived longer than any other class studied.
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Pesquisa Agropecuaria Brasileira
2014
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| Online Access: | https://seer.sct.embrapa.br/index.php/pab/article/view/14156 |
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Lima, Francisco de A. Melo Simplício, Aurino A. Figueiredo, Élsio Antonio P. León, Federico A. Ponce de |
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Lima, Francisco de A. Melo Simplício, Aurino A. Figueiredo, Élsio Antonio P. León, Federico A. Ponce de Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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Lima, Francisco de A. Melo Simplício, Aurino A. Figueiredo, Élsio Antonio P. León, Federico A. Ponce de |
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Lima, Francisco de A. Melo |
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Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality |
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traditional system of goat management. iii. reproductive performance of srd (non-descript) does and kid mortality |
| description |
The reproductive performance of 50 adult SRD does maintained in native caatinga pasture at a stocking rate of 1 to 1.5 ha/head/year was evaluated. Two bucks were used in natural matings from September 1978 until December 1980. A total of 93 kiddings and 28 abortions occurred. Three pregnancies occurred before initiation of the experiment. From the 90 parturitions, 57.7%, 35.6%, 1.1% and 5.6% bore singles, twins, triplets and undetermined, respectively. The flock showed an overall prolificacy of 1.38. From the initial flock, 15 (30%), 28 (56%), 5 (10%) and 2 (4%) does presented one, two, three and zero kiddings, respectively, during the period of study. Neither gestation length nor kidding interval were influenced by type of birth. Length of open period was influenced by season of the year when data were classified by season and kidding status at the open period. Combination of kidding type at previous and following kiddings showed a significant influence (P < 0.05) on the length of the open period. Animals that kidded first singles and then singles or twins showed a shorter open period than animals that firstly kidded twins and then aborted at the following pregnancy (109 vs 188 days). The peak of kid mortality occurred between 7 and 112 days of age. Kid mortality appears not to be influenced by sex or type of birth. Overall kid mortality was 76%. The age at death of kids was influenced by season and sex as well as by their interaction. Males born during the rainy season survived longer than any other class studied. |
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Pesquisa Agropecuaria Brasileira |
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2014 |
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https://seer.sct.embrapa.br/index.php/pab/article/view/14156 |
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AT limafranciscodeamelo traditionalsystemofgoatmanagementiiireproductiveperformanceofsrdnondescriptdoesandkidmortality AT simplicioaurinoa traditionalsystemofgoatmanagementiiireproductiveperformanceofsrdnondescriptdoesandkidmortality AT figueiredoelsioantoniop traditionalsystemofgoatmanagementiiireproductiveperformanceofsrdnondescriptdoesandkidmortality AT leonfedericoaponcede traditionalsystemofgoatmanagementiiireproductiveperformanceofsrdnondescriptdoesandkidmortality AT limafranciscodeamelo sistematradicionaldemanejodecaprinosiiidesempenhoreprodutivodecaprinossrdemortalidadedecabritos AT simplicioaurinoa sistematradicionaldemanejodecaprinosiiidesempenhoreprodutivodecaprinossrdemortalidadedecabritos AT figueiredoelsioantoniop sistematradicionaldemanejodecaprinosiiidesempenhoreprodutivodecaprinossrdemortalidadedecabritos AT leonfedericoaponcede sistematradicionaldemanejodecaprinosiiidesempenhoreprodutivodecaprinossrdemortalidadedecabritos |
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rev-pab-br-article-141562014-09-22T19:23:24Z Traditional system of goat management. III. Reproductive performance of SRD (non-descript) does and kid mortality Sistema tradicional de manejo de caprinos. III. Desempenho reprodutivo de caprinos SRD e mortalidade de cabritos Lima, Francisco de A. Melo Simplício, Aurino A. Figueiredo, Élsio Antonio P. León, Federico A. Ponce de native breed; reproduction; mortality raça nativa; reprodução; mortalidade de crias; produção de crias The reproductive performance of 50 adult SRD does maintained in native caatinga pasture at a stocking rate of 1 to 1.5 ha/head/year was evaluated. Two bucks were used in natural matings from September 1978 until December 1980. A total of 93 kiddings and 28 abortions occurred. Three pregnancies occurred before initiation of the experiment. From the 90 parturitions, 57.7%, 35.6%, 1.1% and 5.6% bore singles, twins, triplets and undetermined, respectively. The flock showed an overall prolificacy of 1.38. From the initial flock, 15 (30%), 28 (56%), 5 (10%) and 2 (4%) does presented one, two, three and zero kiddings, respectively, during the period of study. Neither gestation length nor kidding interval were influenced by type of birth. Length of open period was influenced by season of the year when data were classified by season and kidding status at the open period. Combination of kidding type at previous and following kiddings showed a significant influence (P < 0.05) on the length of the open period. Animals that kidded first singles and then singles or twins showed a shorter open period than animals that firstly kidded twins and then aborted at the following pregnancy (109 vs 188 days). The peak of kid mortality occurred between 7 and 112 days of age. Kid mortality appears not to be influenced by sex or type of birth. Overall kid mortality was 76%. The age at death of kids was influenced by season and sex as well as by their interaction. Males born during the rainy season survived longer than any other class studied. Avaliou-se o desempenho de 50 fêmeas de cabras SRD adultas mantidas em um piquete de pastagem nativa com uma lotação de 1 a 1,5 ha/cab/ano. Neste rebanho, dois reprodutores foram usados em monta natural de setembro de 1978 a dezembro de 1980. Foram observados 93 partos e 28 abortos. Ocorreram três prenhezes antes do início do experimento. Dos 90 partos restantes, 57,1%, 35,6%, 1,1% e 5,6% forem simples, duplos, triplos e não determinados, respectivamente. O rebanho mostrou uma prolificidade de 1,38. Para o rebanho inicial 15 (30%), 28 (56%), 5 (10%) e 2 (4%) das cabras pariram uma, duas, três e nenhuma vez, respectivamente, durante o período estudado. O período de gestação e o intervalo entre os partos não foram influenciados pelo tipo de nascimento. O período vazio foi influenciado pela estação do ano, quando os dados foram classificados por estação e tipo de parto. A combinação do tipo de parto, na parição inicial e na parição seguinte, teve influência significativa no período vazio. Os animais que pariram primeiramente simples e depois simples ou duplos apresentaram um período vazio menor (109 vs 188 dias) do que os animais que pariram primeiramente múltiplos e depois abortaram na prenhez seguinte. O pique de mortalidade (32%) ocorreu entre 7 e 112 dias de idade. A mortalidade de cabritos parece não ter sido influenciada pelo sexo e tipo de nascimento. A mortalidade total das crias foi de 76%. A idade à morte desses animais foi influenciada pela estação, sexo e interação de ambos. Os machos nascidos durante a estação chuvosa sobreviveram mais tempo do que os nascidos nas outras classes estudadas. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2014-04-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/14156 Pesquisa Agropecuaria Brasileira; v.23, n.12, dez. 1988; 1449-1458 Pesquisa Agropecuária Brasileira; v.23, n.12, dez. 1988; 1449-1458 1678-3921 0100-104x eng https://seer.sct.embrapa.br/index.php/pab/article/view/14156/8098 |