AUTHOR=El-Sanafawy Heba A. , Maggiolino Aristide , El-Esawy Ghada S. , Riad Wasef A. , Zeineldin Mohamed , Abdelmegeid Mohamed , Seboussi Rabiha , EL-Nawasany Lamiaa I. , Elghandour Mona M. M. Y. , De Palo Pasquale , Salem Abdelfattah Z. M. 

TITLE=Effect of mango seeds as an untraditional source of energy on the productive performance of dairy Damascus goats

JOURNAL=Frontiers in Veterinary Science

VOLUME=Volume 10 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2023.1058915

DOI=10.3389/fvets.2023.1058915

ISSN=2297-1769

ABSTRACT=Eighteen dairy Damascus goats weighing 38-45 kg live body weight and aged 3-4 years were divided into 3 groups according to their body weight, 6 goats in each group. Yellow corn grain in the concentrate feed mixture was replaced with mango seeds (MS) at levels of 0% MS in group 1 (G1, control), 20% MS in group 2 (G2), and 40% MS in group 3 (G3). The digestibility coefficients of the organic matter, dry matter, crude fiber, crude protein, ether extract, nitrogen-free extract, and total digestible nutrients increased (P<0.05) with feeding MS to G2 and G3. The amounts of dry matter, total digestible nutrients, and digestible crude protein required per 1 kg 3.5% fat corrected milk (FCM) were lower (P<0.05) in G2 and G3 versus G1. Actual milk and 3.5% FCM yield increased (P<0.05) with the increasing MS dietary level. Group 2 and G3 had significantly (P<0.05) the highest total solids, total protein, non-protein nitrogen, casein, ash, fat, solids not fat, lactose, and calcium contents compared to G1. Replacing yellow corn grain with MS in G2 and G3 significantly (P<0.05) decreased the cholesterol concentration and AST activity. Feeding MS increased the concentrations of caprioc, caprylic, capric, stearic, oleic, elaidic, and linoleic acids and decreased the concentrations of butyric, laueic, tridecanoic, myristic, myristoleic, pentadecanoic, heptadecanoic, cis-10-Heptadecanoic, cis-11-eicosenoic, linolenic, arachidonic, and lignoseric acids in milk fat. The results show that replacement of corn grain with MS improved the digestibility, milk yield, feed conversion, and economic efficiency with no adverse effects on the performance of Damascus goats.