Kecernaan Nutrien, Neraca Nitrogen, serta Metabolit Darah Kambing Dara yang Diberi Jenis dan Jumlah Kalsium Berbeda

Abstract

Penelitian ini bertujuan menganalisis dan mengevaluasi dosis pemberian berbagai jenis kalsium berbeda dalam ransum terhadap kecernaan nutrien, retensi nitrogen, serta metabolit darah kambing dara. Rancangan acak kelompok (RAK) digunakan sebagai rancangan percobaan, dengan sembilan ekor kambing Boerja berusia 9 bulan yang terbagi atas 3 kelompok berdasarkan bobot badan (BB) dengan rata-rata BB 23,82 ± 3,61 kg dan 3 perlakuan. Perlakuan terdiri dari P0 = ransum mengandung CaCO3 + DCP sesuai dengan kebutuhan; P1 = ransum mengandung CaCO3 + Ca3(C6H5O7)2 bentuk emulsi sesuai kebutuhan; P2 = ransum mengandung CaCO3 + Ca3(C6H5O7)2 bentuk emulsi setengah kebutuhan. Parameter yang diamati adalah konsumsi dan kecernaan nutrien, neraca nitrogen, serta metabolit darah. Data dianalisis menggunakan Analysis of Variance (ANOVA) dan diuji lanjut Duncan. Hasil penelitian menunjukkan bahwa ransum P1 berpengaruh nyata (p<0,05) dalam meningkatkan konsumsi kalsium (Ca), kecernaan bahan kering (BK) dan protein kasar (PK), penyerapan kalsium (Ca), kadar kalsium (Ca) darah, efisiensi penggunaan nitrogen (EPN), serta menurunkan nitrogen (N) feses. Dapat disimpulkan bahwa ransum mengandung CaCO3 + Ca3(C6H5O7)2 bentuk emulsi sesuai kebutuhan dapat meningkatkan kecernaan bahan kering, dan protein kasar, penyerapan kalsium, efisiensi penggunaan nitrogen, kadar kalsium darah, dan menurunkan ekskresi N feses pada kambing dara.

This study aimed to analyze and evaluate the effects of various types and levels of dietary calcium on nutrient digestibility, nitrogen retention, and the blood metabolites of growing female goats. A randomized block design was used involving nine 9-month-old Boerja goats assigned to three groups based on body weight (average 23.82 ± 3.61 kg) and three dietary treatments. The treatments were P0 = Diet containing CaCO3 + dicalcium phosphate (DCP) according to the calcium requirement; P1 = Diet containing CaCO3 + Ca3(C6H5O7)2 in emulsion form according to the calcium requirement; and P2 = Diet containing CaCO3 + Ca3(C6H5O7)2 in emulsion form at half the calcium requirement. Observed parameters included nutrient intake and digestibility, nitrogen balance, and blood metabolites. Data were analyzed using Analysis of Variance (ANOVA) followed by Duncan’s multiple range test. The results showed that the P1 diet significantly (p<0.05) increased calcium intake, dry matter digestibility (DMD), crude protein digestibility (CPD), calcium absorption, and blood calcium concentration, reducing fecal nitrogen excretion, and improving nitrogen utilization efficiency (NUE). It can be concluded that a ration containing CaCO3 + Ca3(C6H5O7)2 in an emulsified form according to requirements can improve dry matter and crude protein digestibility, calcium absorption, nitrogen utilization efficiency, blood calcium levels, and reduce fecal nitrogen excretion in growing female goats.