A review of conservation and management of the Pantaneiro horse in the Brazilian Pantanal

Santos, S. A.; McManus, Concepta; Mariante, A. da S.; Abreu, U. G. P. de; Mazza, Carmen; Sereno, J. R. B.

doi:10.1017/s1014233900001504

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…These, associated with diseases such as Tripanosomiasis and Equine Infectious Anemia were responsible for the decrease in the population of this breed. At present, studies developed by the Brazilian Association of Pantaneiro Horse Breeders and conservation programs maintain several nuclei of the breed (Mariante & Cavalcante, 2000;Santos, 2001).…”

Section: Introductionmentioning

confidence: 99%

Genetic variability of Pantaneiro horse using RAPD-PCR markers

et al. 2007

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-Blood samples were collected from Pantaneiro Horses in five regions of Mato Grosso do Sul and Mato Grosso States. Arabian, Mangalarga Marchador and Thoroughbred were also included to estimate genetic distances and the existing variability among and within these breeds by RAPD-PCR (Random Amplified Polymorphic DNA -Polymerase Chain Reaction) molecular markers. From 146 primers, 13 were chosen for amplification and 44 polymorphic bands were generated. The analysis of molecular variance (AMOVA) indicated that the greatest portion of detected variability was due to differences between individuals within populations (75.47%). Analysis of the genetic variability between pairs of populations presented higher estimates for the five Pantaneiro populations with the Arabian breed, while lowest estimates were presented by pairs formed among the Pantaneiro populations with the Mangalarga Marchador. Highest genic diversity was shown by the Pantaneiro (0.3396), which also showed highest genetic distance with the Arabian and lowest with Mangalarga Marchador breed. UPGMA dendrogram showed distinct differences between naturalized (Pantaneiro and Mangalarga Marchador) and exotic (Arabian and Thoroughbred) breeds. In the dendrogram generated by UPGMA method, the similarity matrix generated by the Jaccard coefficient showed distinction between the naturalised breeds, Pantaneiro and Mangalarga Marchador, and the exotic breeds, Árab and English Thoroughbred. Results suggest that the Pantaneiro presents a higher genetic variability than the other studied breeds and has a close relationship with the Mangalarga Marchador.Key Words: AMOVA, Arabian, English Thoroughbred, genetic diversity, genetic resource, Mangalarga Marchador Variabilidade genética do cavalo Pantaneiro utilizando marcadores RAPD-PCRRESUMO -Amostras de sangue foram coletadas de cavalos Pantaneiros de cinco regiões dos estados de Mato Grosso do Sul e Mato Grosso. As raças Mangalarga Marchador, Árabe e Puro-Sangue Inglês (PSI) usando marcadores moleculares RAPD-PCR (Random Amplified Polymorphic DNA -Polymerase Chain Reaction) foram incluídas no intuito de se calcular as distâncias genéticas e comparar a variabilidade genética entre e dentro de cada uma das raças. Dos 146 primers escrutinados, 13 foram escolhidos para amplificação com cada um dos indivíduos das oito populações, gerando um total de 44 bandas polimórficas. Os resultados encontrados na Análise de Variância Molecular (AMOVA) indicam que grande parte da variabilidade genética detectada se deve a diferenças entre indivíduos dentro de populações (75,47%). Na análise da estimativa dos percentuais de variabilidade genética entre pares de populações, foram observados maiores valores para os pares formados entre as cinco populações de cavalo Pantaneiro e a raça Árabe, enquanto os menores percentuais ocorreram entre Pantaneiro e Mangalarga Marchador. Maior índice de diversidade gênica foi observado na raça Pantaneiro (0,3396). No dendrograma gerado pelo método UPGMA, a partir da matriz de similaridade obtida p...

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Section: Introductionmentioning

confidence: 99%

Genetic variability of Pantaneiro horse using RAPD-PCR markers

et al. 2007

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“…The quality of forage in these areas is higher and consequently the animals have a better conformation. 30 Animals from Jangada, Araputanga, Maracaju and Rondonópolis were heavier than the other subregions.…”

Section: Resultsmentioning

confidence: 89%

Índices corporais para o cavalo pantaneiro

McManus

Santos²,

Silva³

et al. 2008

Braz. J. Vet. Res. Anim. Sci.

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Body index measurements on 2248 horses registered by the Brazilian Association of Pantaneiro Horse Breeders (ABCCP), in the period from 1972 to 2000 were analyzed. Data was analyzed using SAS and DFREML to calculate genetic parameters. The Dactyl Thoracic Index indicated that these animals are intermediary (not light horses but not suitable for traction), while the BARON and CREVAT index confirmed this result. The Chest Index presented animals that are good for speed as they have long legs but looking at the Body index the indication was that these horses are neither suitable for speed nor traction (intermediary). The analysis of other conformation indices indicated that, in general, these horses are medilines, show good speed and chest development, making them suitable for dealing with cattle and resistance for long treks. The environmental factor analysis verified that these horses have changed in recent years possibly due to selection by the breeder which may affect their adaptive capacity.

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“…As a consequence of natural selection for more than two centuries, in a tropical environment with periodic ooding, this breed became well adapted to the environmentwith resistant hooves, which support ooded land for many months and the ability to graze on submerged pastures. Due to these characteristics these horses plays a fundamental economic and social role in the region of Pantanal both in cattle management, which is the main economic activity in the region, and in the transport of people through ooded areas (Rezende, 2001;Santos et al, 2007;Abreu et al, 2010;Fernandes et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Pantaneiro stallions: did the environment influence seminal traits and testicular biometry?

Ribas,

Rua,

Silva

et al. 2024

Preprint

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The aim of this present study was to evaluate the testis biometry and seminal characteristicsof the Pantaneiro horse breed in two season of year. Th experiment was performed in Pantanal region of Brazil, with evaluation of seven Pantaneiro stallions aged from 4 to 12 years and raised in extensive system. Testis traits and semen of the stallions were collected during the rainy season (RS - April) and dry season (DS - October).Seminalvolume, sperm concentration, total number of spermatozoa (TNSTZ), motility, vigor, sperm major defects, sperm total defects, hypoosmotic swelling test, trypan blues test and pH were evaluated. The right and left testicular (RTL and LTL), the right and left testicular height (RTH and LTH) and the right and left testicular width (RTW and LTW) were measured and testicle volume (TV) was calculated. Statistical analysis was performed to verify the effect of season on testis biometry traits and semen traits.Correlations of all characteristics were calculated.There was effect of season on TNSTZ and sperm major defects. All others war not different between RS and DS. The testicular volume means was 179.4 ± 8.6 cm3. There was no effect of season on testicular biometry traits.High and medium correlations were observed among testis length (TL), testis width (TW), TV with TNSTZ. Motility had high correlation with hypoosmotic test. High magnitude correlation was also observed between hypoosmotic test and intact membrane on trypan blue test. It suggests that the integrity of the membrane is essential for a good function of the kinetic of the spermatozoa.The results showed that the Pantaneiro stallions is adapted to the specific tropical environment and not presenting reproductive seasonality, being able to have your semen collected during the entire year without affect its quality also without testicular variation. Furthermore,the testicular length, width and testis volume showed highly representative as a criterion to selection of Pantaneiro stallions to reproduction.

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A review of conservation and management of the Pantaneiro horse in the Brazilian Pantanal

Cited by 5 publications

References 5 publications

Genetic variability of Pantaneiro horse using RAPD-PCR markers

Genetic variability of Pantaneiro horse using RAPD-PCR markers

Índices corporais para o cavalo pantaneiro

Pantaneiro stallions: did the environment influence seminal traits and testicular biometry?

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