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"Experientia docet" - Experience is the best teacher

Gene-set enrichment analysis of selective sweeps reveals phenotypic traits in Nguni cattle

  • 2021
  • Issue: 6
  • Volume: 51
A.A. Zwane, K.S. Nxumalo, M.L. Makgahlela, E. Van Marle-Koster & N. Maiwashe Page: 761 - 777

Adaptation of animals to different environments is typically associated with structural and functional genomic variations. High throughput SNP genotyping and next-generation sequencing (NGS) have made it possible to study positive selection footprints and adaptation traits. Nguni is a small frame-size…

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Spineless cactus-based diets associated with various nitrogen sources in sheep diets

  • 2021
  • Issue: 6
  • Volume: 51
A.C.A. Pinho, R.A.S. Pessoa, A.M.V. Batista, A.S.C. Véras, D.B. Cardoso, K.C. Santos, D.M. De Lima Júnior & F.F.R. De Carvalho Page: 752 - 760

This study evaluated the effects of various nitrogen (N) sources augmenting spineless cactus-based diets on intake, digestibility, rumen kinetics and N balance in sheep. Eight rumen-fistulated sheep with an average initial bodyweight of 62 ± 6.83 kg were allotted to…

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Performance and intestinal histology of sheep fed detoxified castor bean meal in sugarcane silage

  • 2021
  • Issue: 6
  • Volume: 51
P.R. Dantas Júnior, J.S. Oliveira, N.L. Ribeiro, L.D. Rola, E.G. Silva, A.C. Oliveira, V.V.S. Almeida, D.M. Lima Júnior & R.R. Guerra Page: 735 - 744

This study evaluated histological changes in the digestive organs and kidneys of sheep fed sugarcane silage augmented with detoxified castor bean meal (CBM). Forty Santa Inês sheep (initial weight 20 ± 0.3 kg) were adapted to the experimental regime for…

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Optimization of response to selection using genomic selection in indigenous chicken breeding programmes

  • 2021
  • Issue: 6
  • Volume: 51
C.W. Ndung’u, T.K. Muasya, & T.O. Okeno Page: 723 - 734

This study tested the hypothesis that the use of pooled genetic and phenotypic parameters and genomic selection would optimize selection response in indigenous chicken breeding programmes. This premise was tested with deterministic simulation in three breeding schemes based on the…

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Oxidative stress and effects of dill (Anethum graveolens dhi) powder on the performance and health status of broilers

  • 2021
  • Issue: 6
  • Volume: 51
A. Jangali, M. Hedayati, S. Khalaji & M. Manafi Page: 700 - 714

Effects of dill powder (Anethum graveolens dhi) on performance and biochemical traits, immune response, blood cells and microbial population of cecum broilers after stress induced with dexamethasone were investigated. Two hundred and forty broilers were arrayed in completely randomized design…

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Yeast culture (Saccharomyces cerevisiae) and its active metabolites affect the cecal microbiome of broilers

  • 2021
  • Issue: 6
  • Volume: 51
Z. Sun, Y. Zhen, T. Li, N.D. Aschalew, T. Wang, X. Chen, W. Zhao, X. Zhang & G. Qin Page: 678 - 688

Yeast cultures (YCs) are defined as promising feed additives that maintain the health of birds and improve growth performance by modulating gut microbiota. YCs contain effective metabolites such as glycine, fructose, inositol, galactose, and sucrose. This study investigated the effects…

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Effects of sex on carcass composition and physicochemical, textural and rheological properties of meat from grey partridge

  • 2021
  • Issue: 5
  • Volume: 51
K. Włodarczyk, D. Kokoszyński, M. Saleh, M. Kotowicz & P.D. Wasilewski Page: 647 - 656

The study aimed to determine the effects of sex on bodyweight (BW) and dimensions, carcass weight, dressing percentage, percentage of carcass components, chemical composition, mineral content, acidity and electrical conductivity of the breast and leg muscles of grey partridges (Perdix…

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Effect of exogenous protease on growth performance and meat quality in broilers reared on fishmeal-based diets

  • 2021
  • Issue: 5
  • Volume: 51
Najam-Us-Sahar, Muhammad Aslam Mirza, Shaukat Ali Bhatti & Muhammad Saif ur Rehman Page: 635 - 646

This study determined the effect of protease supplementation in fishmeal-based diets on growth performance and meat quality of commercial broiler birds. Four hundred and thirty-two (432) day-old broiler chicks were divided into 36 experimental units of 12 chicks each. Nine…

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