Efeito das formas de apresentação do milho e do uso de pedrisco na ração, sobre o desempenho de frango de corte

Júnior, Veredino Louzada da Silva; Cotta, Judas Tadeu de Barros; Oliveira, A.

doi:10.1590/s1413-70542003000500027

Cited by 3 publications

(1 citation statement)

References 5 publications

(10 reference statements)

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“…Some researchers [1,2,11] stated that there were no differences with using grit among the groups in terms of carcass yield and relative percentages of organ weight. Some early studies [1,[26][27][28] showed that granite grit usage increased the weight of gizzard but had no effect on performance of broilers, which is also consistent with our results. This result can be explained by a large proportion and different size of the grit stones consumed by chicks retained in the gizzard [2,29] .…”

Section: Discussionsupporting

confidence: 93%

Tahıl Taneleri Olarak Mısır ve Arpa Kapsayan Karma Yemlere Grit İlavesinin Broylerlerde Performans ve Kesim Özelliklerine Etkileri

Eser¹,

Yalçın²,

Onbaşılar³

et al. 2019

Kafkas Univ Vet Fak Derg

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The aim of this study was to determine the effects of grit supplementation to the diets containing maize and barley as cereal grains on performance and slaughter characteristics in broilers. In the experiment, a total of 160 Ross 308 male broiler chicks were allocated to 2 experimental groups with 4 replicate pens containing 20 birds per each for 5 weeks of experimental period. Granite grit was added at the level of 0 and 0.8% to the basal diets containing barley and maize as cereal grains for control and treatment groups, respectively. Granite grit supplementation had no significant effect on final body weight and body weight gain. Feed intake during the experiment was significantly reduced by grit supplementation (P<0.05). However, no significant differences were observed with the feed conversion ratio. Granite grit supplementation to the diets of broilers increased the relative weight of gizzard (P=0.001) and decreased the relative weight of abdominal fat (P<0.05). Dietary treatments did not affect blood serum total cholesterol and triglyceride. In conclusion, granite grit supplementation might be used in broiler nutrition due to having increment in the relative weight of gizzard and reduction in relative weight of abdominal fat.

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Section: Discussionsupporting

confidence: 93%

Tahıl Taneleri Olarak Mısır ve Arpa Kapsayan Karma Yemlere Grit İlavesinin Broylerlerde Performans ve Kesim Özelliklerine Etkileri

Eser¹,

Yalçın²,

Onbaşılar³

et al. 2019

Kafkas Univ Vet Fak Derg

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Performance and digestive function of broiler chickens given grit in the diet

Svihus

Itani

Borg

et al. 2017

British Poultry Science

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1. A series of experiments were carried out to study the effect of grit on broiler performance, gizzard development and fate of grit in the digestive tract. 2. In Experiment 1, performance, gizzard weight and content of grit in the gizzard of broiler chickens given access to granite-type grit was investigated. In Experiment 2, the effect of grit stones on performance and gizzard development was assessed in diets with or without whole wheat. 3. In Experiment 3, the effect of grit in the form of zeolite, granite or marble on gizzard development and digestive tract grinding and passage was studied in diets with or without whole wheat. 4. Grit stones had no effect on performance of broiler chickens, which may be explained by the fact that grit stones did not stimulate gizzard development to the same extent as with other structural materials. 5. The lack of stimulation is at least partly due to the fact that a majority of the grit stones eaten pass through the small intestine without being retained in the gizzard. 6. Grit in the form of marble reduced feed intake and weight gain.

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Voluntary Intake of Insoluble Granite-grit Offered in Free Choice by Broilers: Its Effect on Their Digestive Tract Traits and Performances

Garipoğlu¹,

Erener²,

Ocak³

2006

Asian Australas. J. Anim. Sci

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In this study, the effects of granite-grit offered free-choice on voluntary intakes of grit and subsequently on some morphologic traits of the digestive tract and performance of broilers were investigated. A total of 240 7d-old male broiler chicks (Ross 308) were allotted randomly to 10 floor pens supplied with wood shavings. The experiment lasted for 42 days. There were 2 dietary treatments, each consisting of 5 replicates. Each replicate consisted of 24 birds kept in an experimental unit with a floor size of 2×2 m. Dietary treatments consisted of control (C) in which broilers were fed standard broiler rations, and acid insoluble granite-grit choice (AIGG) in which broilers were fed standard broiler rations and grit in separate troughs. Mean amounts consumed varied quite widely from week to week, but on average broilers ate 3.41 g per d per bird during the experimental period. Birds had a higher voluntary intake of granite-grit at an early age (7 to 21 d of age) than later (22 to 42 d of age). The voluntary intake of granite-grit of AIGG broilers increased (p<0.05) from 2.7 g/day at 7-14 d to 4.4 g at 15-21 d of age, and then it decreased to 3.4, 3.2 and 3.4 g/day between 22-28, 29-35 and 36-42 d of age, respectively. This level of grit intake increased (p<0.05) weights of empty gizzard (0.97 vs. 1.30 g), edible inner organs (3.51 vs. 3.69 g), and length of gut (8.86 vs. 9.01 cm) as a proportion of body weight and the content of insoluble ash (8.4 vs. 42.2 g/kg) in the faeces compared to the control group. Feeding free-choice grit had little or no effect on final live weights (2,542 vs. 2,543 g), daily gains (69 vs. 69 g), carcass weights (1,924 vs. 1,911), dressing percentages (75.6% vs. 75.1%) and feed efficiencies (1.69 vs. 1.66). Birds given grit did not gain more weight than those not given grit but they tended to have (p<0.07) lower feed intake (116.7 vs. 114.5 g), and consequently lower protein and energy intake. In conclusion, the granite-grit consumed voluntarily by broilers increased gut length and empty gizzard weight without affecting growth performance of broilers. Thus, it can be assumed that the voluntary consumption of granite-grit was too low to affect performance.

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Efeito das formas de apresentação do milho e do uso de pedrisco na ração, sobre o desempenho de frango de corte

Cited by 3 publications

References 5 publications

Tahıl Taneleri Olarak Mısır ve Arpa Kapsayan Karma Yemlere Grit İlavesinin Broylerlerde Performans ve Kesim Özelliklerine Etkileri

Tahıl Taneleri Olarak Mısır ve Arpa Kapsayan Karma Yemlere Grit İlavesinin Broylerlerde Performans ve Kesim Özelliklerine Etkileri

Performance and digestive function of broiler chickens given grit in the diet

Voluntary Intake of Insoluble Granite-grit Offered in Free Choice by Broilers: Its Effect on Their Digestive Tract Traits and Performances

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