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"Experientia docet" - Experience is the best teacher

Effect of chitosan oligosaccharide and valine on growth, serum hormone levels and meat quality of broilers

  • 2021
  • Issue: 1
  • Volume: 51
Iftikhar Ahmed, Nabila Roohi & Ayesha Roohi Page: 1 - 10

Chitosan oligosaccharide (COS) and valine (Val) supplementation will improve growth performance, carcass traits, hormonal profile and meat quality in broilers. To evaluate this hypothesis, based on a 2×4 factorial arrangement, 480 male broilers (Ross 708) were randomly placed in eight…

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Effects of guavira fruit (Campomanesia adamantium) peel extract on performance and meat quality of broilers

  • 2021
  • Issue: 1
  • Volume: 51
M.L. Lohmann, C. Eyng, R.V. Nunes, E.J.S. Argandona, C.A.C. Correia, T.L. Köhler & A.P.G.C. Costa Page: 11 - 21

This article assessed the performance, carcass yield, and meat quality of finishing broilers fed increasing levels of hydroethanolic extract of guavira fruit peel (HEGP) were assessed. A total of 480, three-weeks-old male broilers were randomly allocated to dietary levels of…

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Behaviour, welfare, and tibia traits of fast- and slow-growing chickens reared in intensive and free range systems

  • 2021
  • Issue: 1
  • Volume: 51
A. Ghayas, J. Hussain, A. Mahmud, M.H. Jaspal, H.M. Ishaq & A. Hussain Page: 22 - 32

The behaviour, welfare, and tibia characteristics of fast- and slow-growing chickens were evaluated in free-range and intensive production systems. A total of 720 birds of three strains were subjected to these systems after 21 days of rearing under the same…

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Internal quality of commercial eggs stored under conditions that simulate storage from laying to consumption

  • 2021
  • Issue: 1
  • Volume: 51
R.A. Souza, J.L.M. Mello, F.B. Ferrari, A. Giampietro-Ganeco, P.A. Souza, H. Borba & C.C. Pizzolante Page: 46 - 52

This study evaluated the effects on the internal quality of eggs of various storage environments through which eggs may pass between being laid and being consumed. Commercial eggs (N = 648) from Dekalb White hens were used. Treatments consisted of…

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Effects of replacing soybean meal with slow-release urea on milk production of Holstein dairy cows

  • 2021
  • Issue: 1
  • Volume: 51
S. Hallajian, J. Fakhraei, H.M. Yarahamdi & K.J. Khorshidi Page: 53 - 64

The study investigated the effects of replacing soybean meal (SBM) with slow-release urea (SRU) on milk production, milk composition, and rumen fermentation of Holstein dairy cows. Sixteen Holstein cows weighing between 550 and 680 kg in mid lactation were randomly…

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Effect of microbial inoculants on the chemical composition and aerobic stability of Tanzania guinea grass silages

  • 2021
  • Issue: 1
  • Volume: 51
V.H. Bumbieris Junior, E.H. Horst, V.A.P. Guimarães, F.L. Massaro Junior, G.J. Moraes, D.A.R. Meza & S. Galbeiro Page: 81 - 87

The present study evaluated the effects of microbial inoculants on chemical changes and aerobic stability efficiency in Tanzania guinea grass silage. The treatments consisted of C: silage without inoculant; I: silage inoculated with Lactobacillus plantarum (CCT 0580) 8.0 x 109…

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True phosphorus digestibility of cottonseed meal and rice husk supplemented with microbial phytase in broiler chickens

  • 2021
  • Issue: 1
  • Volume: 51
I.I. Ilaboya & E.A. Iyayi Page: 104 - 112

his research aimed to determine effects of phytase in cottonseed meal (CM) and rice husk (RH) based diets on true phosphorus digestibility (TPD) by broiler chickens. Two studies were conducted with 576 one-day-old broiler chickens using regression analysis to determine…

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Carcass characteristics of immunocastrated steers finished on diets with different energy patterns

  • 2021
  • Issue: 1
  • Volume: 51
A.F. de Moura, D.C.A. Filho, I.L. Brondani, L.B. Pereira, G. Joner, A.P.M. Martini, R.F. Pacheco, A.R. Mayer, M.B. da Silva & D. Borchate Page: 113 - 119

The aim of this study was to evaluate the effects of various dietary energy levels on the carcass and meat characteristics of feedlot-finished steers. A total of 27 purebred and crossbred Charolais and Nellore steers were used, with a mean…

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Effect of age of Japanese quail on physical and biochemical characteristics of eggs

  • 2021
  • Issue: 1
  • Volume: 51
S. Nowaczewski, T. Szablewski, R. Cegielska-Radziejewska, K. Stuper-Szablewska, M. Rudzińska, Ł. Tomczyk, K. Szulc, S. Kaczmarek, K. Perz & M. Hejdysz Page: 120 - 127

The aim of the study was to investigate the effects of age of birds on egg quality in Japanese quail. The eggs were randomly selected from among all eggs laid on the same day when the birds were 15, 23…

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Note on in vitro digestion of avocado products for pigs

  • 2021
  • Issue: 1
  • Volume: 51
J. Ly, P. Fránquez, G. Rodríguez, C. Lemus, I.A. Dominguez & F. Grageola Page: 138 - 141

In vitro (pepsin/pancreatin) digestibility coefficients of pulp, seed, and peel of avocados of the Creole and Hass varieties were studied according to a 2 x 3 factorial arrangement in which the factors were the variety and parts of the fruit.…

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Effects of stocking density on growth and skin quality of grower Nile crocodiles (Crocodylus niloticus)

  • 2021
  • Issue: 2
  • Volume: 51
E.C. Webb, D.M. Veldsman, J.G. Myburgh & G.E. Swan Page: 142 - 150

Intensive Nile crocodile (Crocodylus niloticus) farming operates with considerable variation in housing and stocking density. In this study, current commercial stocking densities for crocodilians were investigated using 261 grower-phase crocodiles (15 months old, average total body length 94.5 cm, and…

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Influence of phytate and phytase on performance, bone, and blood parameters of broilers at 42 days old

  • 2021
  • Issue: 2
  • Volume: 51
J. Broch, V.D.L. Savaris, L. Wachholz, E.H. Cirilo, G.L.S. Tesser, W.J. Pacheco, C. Eyng, G.M. Pesti & R.V. Nunes Page: 160 - 171

The objective was to evaluate the effect of diets containing various levels of phytate and phytase on broilers from 1 to 42 days old. The treatments consisted of a combination of diets containing high (HP), medium (MP) and low (LP)…

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Effects of oregano essential oil and capsicum extract on fattening, serum constituents, and rumen fermentation of lambs

  • 2021
  • Issue: 2
  • Volume: 51
H.B. Ünlü, H.H. İpçak, Ç. Kandemir, M. Özdoğan & Ö. Canbolat Page: 172 - 179

This study investigated dietary supplementation of weaned lambs with Origanum vulgare essential oil and Capsicum oleoresin (chilli pepper) extract. Thirty-six eight-week-old male and female Menemen lambs were used in this study. Three dietary treatment groups consisted of T1, an unsupplemented…

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