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"Experientia docet" - Experience is the best teacher

Association of polymorphisms of vasoactive intestinal peptide and its receptor with reproductive traits of turkey hens

  • 2020
  • Issue: 3
  • Volume: 50
L. Hosseinpour, S. Nikbin, N. Hedayat-Evrigh & G. Elyasi-Zarringhabaie Page: 345 - 352

The aim of this study was to identify variations of vasoactive intestinal peptide (VIP) and VIP receptor-1 (VIPR-1) genes that might be associated with turkey reproductive traits. One hundred twenty turkey hens were recorded for age at first egg (AFE),…

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Egg production performance of native and exotic chickens under semi-intensive management conditions in Lesotho

  • 2006
  • Issue: 5
  • Volume: 36
A.M. Nthimo, F.W.C. Neser, W.O. Odenya and M.D. Fair Page: 82 - 85

Egg production performance of the Lesotho native chickens was compared with that of South African native (Ovambo, Lebowa-Venda, Naked Neck and Potchefstroom) and exotic (Rhode Island Red and New Hampshire) chicken lines under semi-intensive conditions in Lesotho. Traits that were…

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Pistacia terebinthus as a dietary supplement for laying hens

  • 2020
  • Issue: 1
  • Volume: 50
I. S. Çetingül, E. E. Gültepe, A. Rahman, A. Iqbal, C. Uyarlar, S. Hacısalihoğlu, Ü. Özçınar & I. Bayram Page: 38 - 46

The aim of this study was to explore the potential of Pistacia terebinthus (terebinth) seed meal as a dietary supplement for laying hens. One hundred and ninety-two Babcock 30-week-old laying hens were assigned to one of six treatments (n =…

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Productive performance, blood biochemical variables and immune responses of laying hens fed diets containing various fat sources

  • 2019
  • Issue: 4
  • Volume: 49
S. Abbasi, J. Fakhraei, H.M. Yarahamdi & S. Khaghani Page: 675 - 683

This study was conducted to evaluate the effects of various fat sources on productive performance, blood biochemical variables and immune responses of laying hens. Laying hens were divided into seven groups, which received i) basal or control diet (no oil);…

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Layer performance, fatty acid profile and the quality of eggs from hens supplemented with Moringa oleifera whole seed meal

  • 2018
  • Issue: 2
  • Volume: 48
S. P. Mabusela, T. T. Nkukwana, M. Mokoma & V. Muchenje Page: 234 - 243

The objective of the study was to determine how the partial supplementation of Moringa oleifera whole seed meal (MOWSM) would affect layer performance, egg quality and egg fatty acid profile. One hundred and forty-four Hy-Line hens in early-lay (20-weeks-old), with…

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Effect of age on production characteristics of Boschveld indigenous chickens of South Africa reared intensively

  • 2017
  • Issue: 2
  • Volume: 47
V.M.O. Okoro, K.E. Ravhuhali, T.H. Mapholi, E.F. Mbajiorgu & C.A. Mbajiorgu Page: 157 - 167

The Boschveld indigenous chicken is a breed that was developed in South Africa for rural household free-range production of meat and eggs. A performance test was carried out to identify their production characteristics when reared intensively, and to estimate the…

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Single nucleotide polymorphisms in the 5′-flanking region of the prolactin gene and the association with reproduction traits i

  • 2009
  • Issue: 1
  • Volume: 39
R.S. Jiang, L.L. Zhang, Z.Y. Geng, T. Yang and S.S. Zhang Page: 83 - 87

Prolactin (PRL), a polypeptide hormone synthesized and secreted by the animal's anterior pituitary gland, plays an important role in the regulation of mammalian lactation and avian reproduction. Considering the significant association between single nucleotide polymorphisms (SNPs) in the 5'-flanking region…

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The response in food intake and reproductive parameters of breeding ostriches to increasing dietary energy

  • 2010
  • Issue: 5
  • Volume: 40
T.S. Brand, T.R. Olivier and R.M. Gous Page: 434 - 437

Elucidating the factors affecting feed intake is important when quantifying nutrient responses in breeding ostriches. The experiment was conducted to determine to what extent dietary energy content will affect the important production parameters of breeding ostriches. Ninety pairs of breeding…

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The effect of feeding clinoptilolite (zeolite) to laying hens

  • 1983
  • Issue: 2
  • Volume: 13
M.D. Olver Page: 107 - 110

One hundred and twenty 4-month·old, single-combed, brown Hy-Line pullets were fed two isocaloric diets containing 16 or 13,5% protein with and without 5% clinoptilolite in four treatments with thirty hens per replicate. Sterile river sand was used as a filler…

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Application of modern nutrition principles in poultry

  • 1985
  • Issue: 3
  • Volume: 15
R.H. Harms Page: 91 - 96

Considerable savings can be realized and performance can be improved by formulating poultry feeds based on the daily feed intake and nutrient needs of the chicken. Programmes have been developed for commercial layers, broiler breeders, and replacement pullets for commercial…

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Utilisation of synthetic amino acids by broiler breeder hens

  • 2006
  • Issue: 2
  • Volume: 36
M.K. Nonis and R.M. Gous Page: 126 - 134

This study was conducted to examine the response of broiler breeder hens to feeds supplemented with synthetic lysine and methionine when fed once or twice daily during peak production. Replacing intact protein with increasing amounts of free lysine and methionine,…

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Effect of a dietary essential oil mixture on performance of laying hens

  • 2006
  • Issue: 4
  • Volume: 36
M. Cabuk, M. Bozkurt, A. Alcicek, A.U. Cath and K.H.C. Baser Page: 215 - 221

The experiment was conducted to evaluate the effects of dietary supplements of either an essential oil mixture (EOM) or a mannan oligosaccharide (MOS) as alternatives to an antibiotic feed additive (avilamycin) for layers kept under hot summer conditions. Four hundred…

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Co-variances for reproduction, egg weight and chick weight in ostriches

  • 2004
  • Issue: 6
  • Volume: 34
S.W.P. Cloete, K.L. Bunter, Z. Brand and H. Lambrechts Page: 17 - 19

The study investigated genetic parameters for egg and chick production recorded over an 8-month breeding season, as well as average egg and chick weight for pair-bred ostrich females. Estimates of h² were moderate for reproduction traits and very high for…

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