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"Experientia docet" - Experience is the best teacher

Relationships of subjectively assessed wool and conformation traits with objectively measured wool and live weight traits in the

  • 2009
  • Issue: 3
  • Volume: 39
P.A. Matebesi, J.B. van Wyk and S.W.P. Cloete Page: 188 - 196

Records of the Tygerhoek Merino resource flock were used to estimate genetic, phenotypic and environmental parameters between subjective wool and conformation traits with objective wool and live weight traits. The database contained records of 4 495 animals, the progeny of…

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The effect of single or combined dietary supplementation of prebiotics, organic acid and probiotics on performance and slaughter

  • 2009
  • Issue: 3
  • Volume: 39
M. Bozkurt, K. Küçükyılmaz, A.U. Çatlı and M. Çınar Page: 197 - 205

A study was conducted to investigate the effect of dietary supplementation of an organic acid, a probiotic or a prebiotic alone or the prebiotic combined with the organic acid or the probiotic on the performance and slaughter characteristics of broiler…

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Effect of dietary mannan oligosaccharide with or without oregano essential oil and hop extract supplementation on the performanc

  • 2009
  • Issue: 3
  • Volume: 39
M. Bozkurt, K. Kücükyılmaz, A.U. Catlı and M. Cınar Page: 223 - 232

The effects of some alternative feed additives for antibiotic growth promoters on performance and some slaughter characteristics were examined in broilers fed wheat-soya based basal starter and finisher diets. A total of 2160 one-day-old male broiler chicks were randomly allocated…

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Genetic parameters for ostrich incubation traits in South Africa

  • 2009
  • Issue: 4
  • Volume: 39
Z. Brand, S.W.P. Cloete, I.A. Malecki and C.R. Brown Page: 253 - 259

Data obtained from a pair-mated ostrich flock located at Oudtshoorn, South Africa, were used to estimate genetic parameters for egg weight (EWT), weight of day-old chicks (CWT), water loss to 21  (WL21) and 35 (WL35) days of incubation, and pipping…

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Non-linear model analysis of categorical traits related to female reproduction efficiency in beef cattle

  • 2009
  • Issue: 4
  • Volume: 39
T. Rust, S.J. Schoeman, J. van der Westhuizen and J.B. van Wyk Page: 260 - 266

The utilization of non-linear threshold models and linear animal models to estimate variance components for categorical reproductive traits in beef cattle was investigated.  Three traits, retention (RET), stayability (STAY) and calf tempo (CT) were defined. The data set consisted of…

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Developmental differences in carcass, meat quality and muscle fibre characteristics between the Landrace and a Chinese native pi

  • 2009
  • Issue: 4
  • Volume: 39
Fawen Dai, Dingyuan Feng, Qingyun Cao, Hui Ye, Changmin Zhang, Weiguang Xia and Jianjun Zuo Page: 267 - 273

This experiment was conducted to compare carcass and meat quality traits, and muscle fibre characteristics in the longissimus muscle of the Landrace [an European pig breed] and the Lantang [a Chinese native pig breed] at the ages of 60, 90…

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Dietary vitamin E (α-tocopheryl acetate) and organic selenium supplementation: performance and antioxidant status of broilers fe

  • 2009
  • Issue: 4
  • Volume: 39
H. Basmacıoğlu Malayoğlu, S. Özkan, S. Koçtürk, G. Oktay and M. Ergül Page: 274 - 285

The experiment was conducted to study the effects of organic selenium (Se-enriched yeast) and vitamin E (α-tocopheryl acetate) supplementation, alone or together, on the performance and antioxidant status of broilers fed diets enriched in n-3 PUFAs using fish oil. Day-old…

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The effect of porcine somatotropin (pST) and gender on production parameters and tissue yield of pigs slaughtered at 135 kg live

  • 2009
  • Issue: 4
  • Volume: 39
E. Pieterse, I.C. Swarts and L.C. Hoffman Page: 286 - 295

Eighteen F1 crossbred (commercial-type terminal crosses) pigs (boars, barrows and gilts) with an initial weight of 27.2 ± 2 kg were used to investigate the effect of porcine somatotropin (pST) administered for six weeks prior to slaughter on production parameters…

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Body weight, scrotal circumference and testosterone concentration in young Boer goat males born during the dry or rainy seasons

  • 2009
  • Issue: 4
  • Volume: 39
F.Q.G. Bezerra, C.R. Aguiar Filho, L.M. Freitas Neto, E.R. Santos Junior, R.M. Chaves, E.M.P. Azevedo, M.H.B. Santos, P.F. Lima and M.A.L. Oliveira Page: 301 - 306

The aim of this study was to compare testosterone concentration, body weight, scrotal circumference and age to penis detachment from days 30 to 240 in young Boer goat males (n = 22) born during the dry (n = 11) and…

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Mortality determination and gender identification of conceptuses in pregnancies of Santa Ines ovine by ultrasound

  • 2009
  • Issue: 4
  • Volume: 39
E.P.B.X. Moraes, L.M. Freitas Neto, C.R. Aguiar Filho, F.Q.G. Bezerra, M.H.B. Santos, J.P. Neves, P.F. Lima and M.A.L. Oliveira Page: 307 - 312

The aim of this study was to monitor early gestation in Santa Ines ewes by ultrasound in order to determine embryo and foetal loss, and to identify foetal sex. Ewes (n = 132) were submitted to controlled natural mating. For…

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Genetic parameter estimates for tick resistance in Bonsmara cattle

  • 2009
  • Issue: 4
  • Volume: 39
M.A. Budeli, K.A. Nephawe, D. Norris, N.W. Selapa, L. Bergh and A. Maiwashe Page: 321 - 327

The objectives of the study were to estimate genetic parameters for tick resistance and to evaluate the effect of the level of tick infestation on the estimates of genetic parameters for South African Bonsmara cattle. Field data of repeated tick…

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Fatty acid and cholesterol content, chemical composition and sensory evaluation of horsemeat (Short communication)

  • 2009
  • Issue: 4
  • Volume: 39
I.B. Tonial, A.C. Aguiar, C.C. Oliveira, E.G. Bonnafé, J.V. Visentainer and N.E. de Souza Page: 328 - 332

This study aimed to determine the fatty acid and composition and cholesterol concentration of horsemeat, and to evaluate its taste acceptability by the Brazilian population. Horsemeat samples were obtained from a Paraná State slaughterhouse. The chemical composition revealed a low…

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