Effect of the feed additive clinoptilolite (ZeoFeed) on nutrient metabolism and production performance of laying hens

• Published in: Acta veterinaria Brno Vol. 79; no. 9; pp. S29 - S34
• Main Authors: Machacek, M.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Fakulta Veterinarni Hygieny a Ekologie, Vecerek, V.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Fakulta Veterinarni Hygieny a Ekologie, Mas, N.,University of Zagreb (Croatia). Faculty of Veterinary Medicine, Suchy, P.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Fakulta Veterinarni Hygieny a Ekologie, Strakova, E.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Fakulta Veterinarni Hygieny a Ekologie, Serman, V.,University of Zagreb (Croatia). Faculty of Veterinary Medicine, Herzig, I.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Fakulta Veterinarni Hygieny a Ekologie
• Format: Journal Article
• Language: English
• Published: 01.08.2010
• Subjects: ADDITIF AUX ALIMENTS DES ANIMAUX; ADITIVOS DE PIENSOS; ALIMENTACION DE LOS ANIMALES; ALIMENTATION DES ANIMAUX; ALMIDON; AMIDON; ANIMAL FEEDING; ANIMAL NUTRITION; ANIMAL PERFORMANCE; AZOTE; AZUCAR EN SANGRE; BLOOD CELLS; BLOOD COMPOSITION; BLOOD PLASMA; BLOOD PROTEINS; BLOOD SUGAR; CALCIO; CALCIUM; CELLULE SANGUINE; CELULAS SANGUINEAS; CHOLESTEROL; CLINOPTILOLITE; COLESTEROL; COMPLEMENT ALIMENTAIRE; COMPOSICION DE LA SANGRE; COMPOSITION DU SANG; CONSOMMATION ALIMENTAIRE (ANIMAUX); CONSUMO DE PIENSOS; CONTENIDO PROTEICO; CORPS GRAS; DESEMPENO ANIMAL; DESEMPENO EN LA POSTURA; EGGS; ENERGY METABOLISM; ERITROCITOS; ERYTHROCYTE; ERYTHROCYTES; FATS; FEED ADDITIVES; FEED CONSUMPTION; FISIOLOGIA DE LA NUTRICION; FOSFORO; GALLINA PONEDORA; GALLINAS; GLUCOSA; GLUCOSE; GRASAS; HAEMATOCRIT; HAEMOGLOBIN; HEMATOCRITE; HEMATOCRITO; HEMOGLOBINA; HEMOGLOBINE; HENS; http://www.fao.org/aos/agrovoc#c_10611; http://www.fao.org/aos/agrovoc#c_11525; http://www.fao.org/aos/agrovoc#c_1196; http://www.fao.org/aos/agrovoc#c_12109; http://www.fao.org/aos/agrovoc#c_14992; http://www.fao.org/aos/agrovoc#c_1584; http://www.fao.org/aos/agrovoc#c_16124; http://www.fao.org/aos/agrovoc#c_2502; http://www.fao.org/aos/agrovoc#c_2659; http://www.fao.org/aos/agrovoc#c_27925; http://www.fao.org/aos/agrovoc#c_2816; http://www.fao.org/aos/agrovoc#c_2827; http://www.fao.org/aos/agrovoc#c_3287; http://www.fao.org/aos/agrovoc#c_33996; http://www.fao.org/aos/agrovoc#c_3462; http://www.fao.org/aos/agrovoc#c_34843; http://www.fao.org/aos/agrovoc#c_34864; http://www.fao.org/aos/agrovoc#c_4234; http://www.fao.org/aos/agrovoc#c_429; http://www.fao.org/aos/agrovoc#c_4298; http://www.fao.org/aos/agrovoc#c_4517; http://www.fao.org/aos/agrovoc#c_5192; http://www.fao.org/aos/agrovoc#c_5275; http://www.fao.org/aos/agrovoc#c_5698; http://www.fao.org/aos/agrovoc#c_5804; http://www.fao.org/aos/agrovoc#c_6251; http://www.fao.org/aos/agrovoc#c_7369; http://www.fao.org/aos/agrovoc#c_8349; http://www.fao.org/aos/agrovoc#c_9320; http://www.fao.org/aos/agrovoc#c_9324; http://www.fao.org/aos/agrovoc#c_960; http://www.fao.org/aos/agrovoc#c_963; http://www.fao.org/aos/agrovoc#c_970; HUEVOS; LAYER CHICKENS; LAYING PERFORMANCE; LEUCOCITOS; LEUCOCYTE; LEUKOCYTES; MAGNESIO; MAGNESIUM; METABOLISME ENERGETIQUE; METABOLISMO ENERGETICO; MINERAL NUTRIENTS; NITROGEN; NITROGENO; NUTRICION ANIMAL; NUTRIENTES MINERALES; NUTRITION ANIMALE; NUTRITION PHYSIOLOGY; OEUF; PERFORMANCE ANIMALE; PERFORMANCE DE PONTE; PESO; PHOSPHORE; PHOSPHORUS; PHYSIOLOGIE DE LA NUTRITION; PLASMA SANGUIN; PLASMA SANGUINEO; POIDS; POULE PONDEUSE; POULETTE; PROTEIN CONTENT; PROTEINAS SANGUINEAS; PROTEINE SANGUINE; STARCH; SUBSTANCE NUTRITIVE MINERALE; SUCRE DU SANG; SUPLEMENTOS; SUPPLEMENTS; TENEUR EN PROTEINES; TRIGLICERIDOS; TRIGLYCERIDE; TRIGLYCERIDES; WEIGHT
• ISSN: 0001-7213; 1801-7576
• DOI: 10.2754/avb201079S9S029

The aim of this study was to assess the effects of two levels of clinoptilolite administered in feed (2% and 4%) on some selected performance indicators, metabolic utilization of basic nutrients and the health status of laying hens. The selected 24 Bovans Goldline hybrid laying hens were divided into three equal groups, two experimental groups (E1 and E2) and one control group (C). The laying hens were housed individually in cages. Hens were all fed a complete feed mix ad libitum. Feed mixes for E1 and E2 groups contained 2% and 4% of clinoptilolite (commercial additive ZeoFeed) respectively, replacing the same amounts of wheat. During this 28-day experiment, feed consumption and the number and weight of eggs laid were monitored individually for each hen. At the end of the experiment, the balance test using the indicator method (Cr2O3) was performed in all eight hens in each of the groups. The results of balance tests were then used to calculate the metabolic utilization of selected nutrients (nitrogen, fat, ash, nitrogen-free extracts, starch, gross energy, Ca, P). The addition of 2% clinoptilolite resulted in a highly significant increase in mean egg weight to 64.69 g, but the addition of 4% clinoptilolite resulted in a highly significant decrease in mean egg weight to 62.20 g compared to the control (63.73 g). Moreover, daily feed mix consumption in group E1 decreased to 114 g per one laying hen/day compared to the controls (118 g per one laying hen/day). In group E2, daily consumption of feed mix increased to 124 g. The 2% clinoptilolite supplementation slightly increased metabolic utilization of fat, nitrogen-free extracts, starch and gross energy compared to group C. Results of haematological test of the hens' blood showed significant changes in haemoglobin (significantly higher values in C and E1 groups than in E2 hens). Differences in the values of the biochemical indicators monitored (total protein, glucose, cholesterol, triacylglycerols, calcium, phosphorus, magnesium and the AST enzyme) between C and E1 and E2 hens were not significant and remained within the range of reference values.