Authors : Ignacio Mejia Haro, Ana Julia Azuara Hernandez, Benjamin Ortiz De La Rosa, Jose Manuel Martinez Mireles, Jose Mejia Haro, Victor M. Marin Perales and Mauricio Ramos Davila
Abstract: The objective of this study was to evaluate the effect of different levels of chicken manure in finishing lamb diets on productive performance without producing negative effects on health and Cu content in liver and blood. Twenty-one not castrated Katahdin male lambs (Initial BW 35±1.20 kg) were assigned to a completely randomized design. Three levels of inclusion of chicken manure were evaluated in a mixed diet: T1) 10; T2) 15 and T3 ) 20%. The variables evaluated were Average Daily Gain (ADG), Daily Feed Intake (DMI), Feed Conversion (FC), Carcass Yield (CY), ruminal pH, VFA production in situ DM degradability and Cu content in blood serum and liver. At the 86 day in trial, the final live weight was obtained (T1: 50.3, T2: 48.2 and T3: 45.7 kg) and significantly decreased (p<0.05) as the chicken manure level increased; the same happened for DMI (2039, 1932 and 1779 g day lamb-1). No differences (p>0.05) for ADG (312, 291 and 277 g), FC (6.6, 6.6 and 6.4) and CY (54, 54 and 56%) were observed. The production of VFA increased (p<0.05) as the chicken manure in the diet increased too (62.1, 78.4 and 95.7 mM/L). No pathological signs were observed in the animals during the study and blood serum and liver Cu contents exceeded the normal range without producing toxicity. Concentrations of 10, 15 and 20% of chicken manure in finishing lamb diets neither affected negatively the production performance nor produced signs of toxicity in lambs.
Ignacio Mejia Haro, Ana Julia Azuara Hernandez, Benjamin Ortiz De La Rosa, Jose Manuel Martinez Mireles, Jose Mejia Haro, Victor M. Marin Perales and Mauricio Ramos Davila, 2019. Effect of the Inclusion of Three Levels of Chicken Manure in Diet on Productive Performance of Finishing Lambs. Journal of Animal and Veterinary Advances, 18: 55-60.