Temperatura superficial e índice de tolerância ao calor de caprinos de diferentes grupos raciais no semi-árido nordestino

Souza, Bonifácio Benício de; Souza, Expedito Danusio de; Cézar, Marcílio Fontes; Souza, Wandrick Haus de; Santos, José Rômulo Soares dos; Benício, Talicia Maria Alves

doi:10.1590/s1413-70542008000100039

Cited by 35 publications

(18 citation statements)

References 9 publications

(6 reference statements)

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“…In this study, no difference was found in the CL of the carcasses of either studied species (Table 2), and despite the reduced amount of subcutaneous fat observed in the carcasses, the obtained values are within the mean range cited in the literature for goats 1.90 to 2.17%, (OLIVEIRA et al, 2008); 2.0 to 5.3%, (SOUSA et al, 2009) and sheep 3.0 to 3.5%, (LANDIM et al, 2007); 2.04 to 3.06%, (CARTAXO et al, 2011).…”

Section: Resultssupporting

confidence: 80%

“…In this study, there were no differences between the studied animal origins; however, the sheep showed a higher BCI1 than the goats (Table 1). Sousa et al (2009) observed that Santa Inês lambs and Boer crossbred goats reached higher BCI1 values than Anglo-Nubian crossbred goats.…”

Section: Resultsmentioning

confidence: 85%

“…Sousa et al (2009) compared feedlot-finished crossbred goats with sheep, and observed superiority in the height at the withers and TC1 in the sheep compared with the goats; concerning the measurements of height at the withers, BL, and leg length (LL), the species were similar statistically. Thus, even under the same rearing conditions, with similar weights and ages, caprine and ovine species can have different body measurements.…”

Section: Resultsmentioning

confidence: 96%

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In vivo and carcass characteristics of goats and sheep sold for slaughter in Ceará State

et al. 2015

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This study was conducted to evaluate the in vivo and carcass characteristics of goats and sheep sold for slaughter, which originated from different regions of Ceará State, Brazil. Thirty-six (36) mixed-breed, uncastrated male animals (18 goats and 18 sheep), acquired from street markets, which were raised in an extensive production system from the regions of Quixadá, Sobral, and Tauá, were used in this experiment. Before slaughter, the animals were weighed, and body measurements were taken and the body condition score was assessed. Post-slaughter, the carcasses were weighed, morphometric measurements were obtained, and the commercial cuts were weighed and their yields were calculated. The mean in vivo body weight was 23.83 ± 3.76 kg for the goats and 25.22 ± 5.25 kg for the sheep; the body condition score was close to 2, and the mean age was 12 months, with no differences between the species. No differences were found between species and origin for the weights and yields of carcass or for chilling loss. The carcass conformation values were considered poor, and the fat cover was classified as too lean, with the goat carcasses considered superior to the sheep carcasses in these respects. The sheep had higher values for loin-eye area, subcutaneous fat thickness, and weight and proportion of leg than the goats. Mixed-breed goats and sheep reared in extensive systems in Ceará State and sold in street markets in the capital, irrespective of their origin, reach their slaughter weight at an advanced age and with a lean body condition, resulting in carcasses of a low quality, with a low muscle content and poor fat cover. In the extensive conditions of the state of Ceará, animals of the ovine species have a greater ability for meat production than caprine species.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 96%

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In vivo and carcass characteristics of goats and sheep sold for slaughter in Ceará State

et al. 2015

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“…At present there is not a chart on the black globe temperature-humidity index (BGT) for ovine (SOUZA et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…The beneficial effects of providing shade shelter to sheep in improving their reproductive performance are also well established (STOTT et al, 1972;STEPHENSON et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

Influence of availability of shade on testicular characteristics of Santa Ines rams - doi: 10.4025/actascianimsci.v35i.18479

Teodoro

Pereira

Filho

et al. 2013

Acta Sci. Anim. Sci.

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ABSTRACT. The purpose of this study was to evaluate the effects of availability of artificial shading on testicular and seminal characteristics of Santa Ines crossbred rams. Twelve 8 month old rams at 38.1 ± 5.2 kg average weight, were used in a total random design with two treatments: areas with and without available artificial shading (black polyethylene mesh screen for a 50% reduction of solar radiation). The scrotal circumference, scrotal length, scrotal volume, rectal temperature and scrotal temperature were measured twice a week. Also a biweekly analysis of the semen was carried out, measuring the volume and spermatic concentration as well as the percentage of normal spermatozoa. The results show that available shading provided for lower scrotal temperatures and higher sperm concentration, without influencing the scrotal volume and the percentage of normal spermatozoa. The testicular measures, such as the scrotal circumference and length were higher in the rams that were subjected to the no available shading treatment. The absence of differences, in some of the analyzed variables, between the two treatments, with and without available shading, could be due to high adaptability of the animals.Keywords: semen, biometrics, sheep, shade, thermal stress. Influência da disponibilidade de sombra sobre as características seminais de ovinos Santa InêsRESUMO. Com a finalidade de avaliar o efeito do sombreamento artificial sobre as características testiculares e seminais de ovinos deslanados, foram utilizados 12 carneiros (½ sangue Santa Inês x SRD) com peso vivo médio de 38.06 ± 5.24 kg e faixa etária de cerca de oito meses. Os tratamentos foram disponibilidade ou não de sombreamento artificial, utilizando tela preta de polietileno com malha para bloquear 50% da radiação solar global. Duas vezes na semana entre 14h e 15h realizou-se a medição da circunferência escrotal (CE), comprimento escrotal (CC), volume escrotal (VE), temperatura retal (TR) e temperatura escrotal (TE). Quinzenalmente, foram realizadas análises quantitativas e qualitativas do sêmen. Os resultados obtidos permitem concluir que o sombreamento proporcionou menores temperaturas escrotais e maior concentração espermática, não influenciando o volume escrotal e a porcentagem de espermatozoides normais. Medidas testiculares como circunferência e comprimento escrotal foram mais elevadas ao sol. A ausência de diferenças em algumas variáveis analisadas nos grupos com e sem sombreamento, pode ser reflexo da rusticidade natural dos animais.Palavras-chave: sêmen, biometria, carneiro, sombra, estresse térmico.

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Physiological and production response of dairy goats bred in a tropical climate

et al. 2013

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The aim of this work was to determine the adaptability of Saanen and ½Saanen × ½Anglo-Nubian (½S½AN) goats bred in tropical climates. The study included 30 goats, 15 Saanen and 15 ½S½AN. The data was collected during the rainy and dry seasons. During the whole experimental period, the environment variables were recorded, as well as rectal temperature (RT), superficial temperature (ST), respiratory rate (RR) and heart rate (HR) and milk production (MP). The adaptability coefficient (AC) was calculated for both genotypes. The averages were evaluated by ANOVA at 5% probability. There was a genotype and period of year effect, as well as the interaction genotype × period of year. Pearson's simple correlation analysis was then carried out between milk production and physiological and environment variables. There was a statistical difference (p < 0.05) between the seasons for RT, ST and RR. RT, RR and HR were lower for ½S½AN than Saanen goats, regardless of the season. MP was greater in the dry season (p < 0.05) (2.52 ± 0.50 kg/day for ½S½AN and 2.41 ± 0.38 kg/day for Saanen) than the rainy season (2.17 ± 0.27 kg/day for ½S½AN and 2.28 ± 0.53 kg/day for Saanen). The MP correlations were very significant (p < 0.05), however low and negative, where it was higher when correlated with RR in Saanen goats. Under the conditions of the present study, it is concluded that the goats were influenced by climatic factors, where the rainy period was more likely to cause thermal stress in the animals.

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Temperatura superficial e índice de tolerância ao calor de caprinos de diferentes grupos raciais no semi-árido nordestino

Cited by 35 publications

References 9 publications

In vivo and carcass characteristics of goats and sheep sold for slaughter in Ceará State

In vivo and carcass characteristics of goats and sheep sold for slaughter in Ceará State

<b>Influence of availability of shade on testicular characteristics of Santa Ines rams</b> - doi: 10.4025/actascianimsci.v35i.18479

Physiological and production response of dairy goats bred in a tropical climate

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