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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
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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
Garipoglu, Ali Vaiz; Erener, Guray; Ocak, Nuh;
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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 . 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.
Poultry;Choice Feeding;Grit Preference;Gizzard Development;
 Cited by
Banfield, M. J. and J. M. Forbes. 2001. Effects of whole wheat dilution v. substitution on coccidiosis in broiler chickens. Br. J. Nutr. 86:89-95

Bennett, C. D. and H. L. Classen. 2003. Performance of two strains of laying hens fed ground and whole barley with and without access to insoluble grit. Poult. Sci. 82:147-149

Bennett, C. D., H. L. Classen and C. Riddell. 2002a. Feeding broiler chickens wheat and barley diets containing whole, ground and pelleted grain. Poult. Sci. 81:995-1003

Bennett, C. D., H. L. Classen, K. Schwean and C. Riddell. 2002b. Influence of whole barley and grit on live performance and health of turkey toms. Poult. Sci. 81:1850-1855

Bennett, C. D., H. L. Classen and C. Riddell. 1995. Live performance and health of broiler chickens fed diluted with whole or crumble wheat. Can. J. Anim. Sci. 75:611-614

Cumming, R. B. 1992. The advantage free-choice feeding for village chickens. In: Proceedings of the 19th World Poultry Congress, The Netherlands, pp. 627-630

Cumming, R. B. 1994. Opportunities for whole grain feeding. Proceedings of the 9th European Poultry Conference, World Poult. Sci. 2:219-222

Dror, Y., I. Nır and Z. Nıtsan. 1977. The relative growth of internal organs in light and heavy breeds. Poult. Sci. 18:493-496 crossref(new window)

DSI. 2003. Granitin Icerigi (Content of Granite). DSI Ordu Il Mudurlugu, Jeoloji Muhendisi, 2003

Erener, G., N. Ocak, E. Ozturk and A. Ozdas. 2003. Effect of different choice feeding methods based on whole wheat on performance of male broiler chickens. Anim. Feed Sci. Technol. 106:131-138 crossref(new window)

Ferket, P. 2000. Feeding whole grains to poultry improves gut health. Feedstuffs 72:12-13, 16

Forbes, J. M. 1995. Voluntary feed intake and diet selection in farm animals. CAB international. Wallingford, UK

Hill, K. J. 1971. Physiology and Reproduction of the Domestic Fowl. (Ed. D. J. Bell and B. M. Freeman). Academic Press. London

Jones, G. P. D. and R. D. Taylor. 1999. Performance and gut characteristics of grit-fed broilers. Proceedings Australian Poultry Science Symposium Volume No 11, University of Sydney, NSW, pp. 57-60

Karunajeewa, H. and S. H. Tham. 1984. Choice feeding of the replacement pullet on whole grains and subsequent performance on laying diets. Br. Poult. Sci. 25:99-109 crossref(new window)

Kermanshahi, H. and H. L. Classen. 2001. Feeding whole wheat with or without a dietary enzyme or grit to laying hens. J. Agric. Sci. Technol. 3:193-198

Kriz, L. 1985. Effect of silica grit on efficiency and slaughter characteristics of caged broiler chickens. Acta Univ. Agric. Br. Facult. Agric. 33:211-216

Kriz, L., P. Treblik, O. Mika, F. Spacek and J. Rehacek. 1981. Effect of silica grit on yields and carcass value of broiler chickens. Acta Univ. Agric. Br. Facult. Agric. 29:275-282

Lazar, V., J. Kacirkova and D. Klecker. 1984. Verifying the applicability and time of silica grit feeding to broiler chickens. Acta Univ. Agric. Br. Facult. Agric. 32:105-109

Lohakare, J. D., B. J. Chae and T. W. Hahn. 2004. Effects of feeding methods (Water vs. feed) of vitamin C on growth performance and carcass characteristics in broiler chickens Asian-Aust. J. Anim. Sci. 17:1112-1117

Masloboev, A. and N. Gordienko. 1974. The role of grit in broiler feeding. Ptitsev. 7:14-16

Moore, S. J. 1998. Use of an artificial gizzard to investigate the effect of grit on the breakdown of grass. J. Zool., 246:119-124 crossref(new window)

National Research Council. 1994. Nutrient Requirements of Poultry. 9th rev. ed. National Academy Press, Washington, DC

Olver, M. and A. Jonker. 1997. Effect of choice feeding on the performance of broiler. Br. Poult. Sci. 38:571-576 crossref(new window)

Plavnik, I., B. Macovsky and D. Sklan. 2002. Effect of feeding whole wheat on performance of broiler chickens. Anim. Feed Sci. Technol. 96:229-236 crossref(new window)

Rutrowski, A. and M. Wiaz. 2001. Effect of feeding whole or ground wheat grain on the weight of the gizzard and pH of digest in broiler chickens. J. Anim. Feed Sci. 10:285-289

Sahin, A., H.Yildirim, S. Kaya, S. Canogullari and M. Baylan. 2001. Selection of whole wheat by broiler chickens in semicommercial experimental conditions. Hayv. Uret. 42:8-20

Schwean, K., C. D. Bennett, H. L Classen and C. Riddell. 1997. Influence of whole barley, grit and dawn/dusk lighting on live performance of turkey toms. Can. J. Anim. Sci. 77:558(Abst)

Silva-Junior, V. L. da, J. T. de B. Cotta and A. I. G. de Oliveira. 2003. Effect of the forms of presentation of corn and the use of grit in the rations on performance in broiler. Ciencia e Agr. 27:1165-1171

SPSS. 1999. SPSS for Windows. Release 10.00 Version. SPSS Inc

Svihus, B., O. Herstad, C. W. Newman and R. K. Newman. 1997. Comparison of performance and intestinal characteristics of broiler chickens fed on diets containing whole, rolled or ground barley. Br. Poult. Sci. 38:524-529 crossref(new window)

Takahashi, T. 1973. The effects of administration of various grits on the growth of broiler chicks and their visceral organs. Bull. Hirosh. Agric. Coll. 4:332-339

Tauson, R. and R. Elwinger. 1986. Prototypes for application of choice feeding in caged laying hens using flat chain feeders. Acta Agric. Scandinav. 36:129-146

Taylor, E. J. 1996. An evaluation of the importance of insoluble versus soluble grit in the diet of canaries. J. Avi. Med. Surg. 10:248-251

Walter, E. D. and J. R. Aitken. 1961. The value of soluble and insoluble grit in all-mash and mash-grain rations for caged layers. Poult. Sci. 40:904-909

Yildiz, B., H. Yildiz. and A. Bahadir. 2001. Yemin fiziksel yapisi ile yemleme seklinin broylerlerde muskuler mide uzerindeki etkisi (The effects of physical texture of feed and feeding regime on the gizzards of broilers) Turk J. Vet. Anim. Sci. 25:295-300