BackgroundThe effect of choline chloride supplementation through forced drinking combined with concentrate diets containing Ca-fish oil on milk production and milk composition of Etawah Grade goats was evaluated. Choline chloride is an essential component in ruminant diets as it is required for fat metabolism.MethodThe experiment was conducted in a completely randomized block design with three types of treatments and eight replications. The trial had two successive experimental periods; the first, during the eight weeks of late pregnancy, and the second, during the first 12 weeks of lactation. Twenty-four Etawah Grade does in the second gestation period were divided into three treatment groups. Commercial choline chloride 60 % in corncobs-based powder was used as a source of choline chloride. The treatments were no supplementation (control) and supplemented with either 4 g or 8 g/2days of choline chloride. Choline chloride was given to the animals through a forced drinking technique, after dissolving it in 60 ml drinking water. The initial body weight of does was 38.81 ± 3.66 kg. The does were penned individually, and were given fresh chopped King Grass ad libitum and 700 g/day of concentrate diets containing Ca-fish oil, starting eight weeks prior to expecting kidding and continuing for 12 weeks of parturition.ResultsAll nutrient intakes were not significantly different (p > 0.05) among the treatments during the late pregnancy and the lactation periods. Supplementation did not affect (p > 0.05) the average daily gains and feed conversion ratio during pregnancy but gave effects (p < 0.05) on the average daily gains, feed conversion ratio and income over feed cost during lactation. The highest average daily milk yields and 4 % fat corrected milk yields were found in goats supplemented with 4 g/2days of choline chloride and increased by 17.00 % and 24.67 %, respectively, compared to the control. Moreover, milk composition percentage and milk constituent yields improved significantly (p < 0.05) in those supplemented with 4 g/2days of choline chloride.ConclusionThe supplementation of 4 g/2days of choline chloride through forced drinking increased milk yields, the 4 % fat corrected milk yields, milk composition, milk constituent yields, and improved feed conversion ratio and income over feed cost of Etawah Grade goats.

ABSTRAKSupriyati, Krisnan R, Budiarsana IGM, Praharani L. 2016. Pengaruh dari perbedaan tingkatan protein dan energi pakan konsentrat terhadap asupan nutrisi dan produksi susu pada kambing Saanen x Etawah silangan. JITV 21(2): 88-95. DOI: http://dx.doi.org/10. 14334/jitv.v21i2.1356 Kambing perah turut berkontribusi pada ketahanan pangan dan nutrisi. Akan tetapi, informasi terkait konsumsi nutrisi dan produksi susu (termasuk komposisinya) kambing persilangan Saanen x Etawah (SAPERA) masih terbatas. Penelitian ini bertujuan untuk mengevaluasi asupan nutrisi, produksi susu dan komposisi kandungan nutrisi kambing SAPERA yang sedang menyusui yang diberi pakan dengan tingkat energi dan protein konsentrat yang berbeda. Tiga puluh kambing SAPERA multipara dianalisis menggunakan rancangan acak kelompok dengan tiga perlakuan (R1, R2, dan R3) dan 10 pengulangan selama 12 minggu laktasi. Pakan konsentrat yang diformulasikan mengandung 18% PK dan 72% TDN (R1), 17% PK dan 75% TDN (R2), dan 16% PK dan 78% TDN (R3). Domba betina dipelihara dalam kandang individu dan diberikan pakan basal (cacahan rumput raja segar secara ad libitum sebanyak 500 g dari campuran pakan hijauan) dan 1 kg konsentrat perlakuan. Hasil penelitian menunjukkan bahwa perlakuan (R1, R2, dan R3) memiliki pengaruh nyata (P<0.05) terhadap asupan PK, PT, Ca, P dan FCR tetapi tidak berpengaruh nyata (P>0.05) terhadap asupan BK dan TDN. Perbedaan yang tidak nyata ditemukan pada produksi dan komposisi susu antar perlakuan. Berdasarkan hasil penelitian, dapat disimpulkan bahwa pakan terbaik untuk kambing SAPERA menyusui adalah campuran dari rumput cacah, campuram hijauan dan konsentrat (16% PK dan 78% TDN) dengan 160g/kg PK dan 750 g/kg TDN dari total BK yang memproduksi susu sebanyak 1.55 kg/hari dengan kandungan 90 g/hari lemak, 43 g/hari protein dan 75 g/hari laktosa. Dairy goat contributes to food and nutrition security. However, information on nutrient consumption and milk yield, as well as milk composition of Saanen x Etawah (SAPERA) grade goat is limited. This experiment was done to evaluated nutrient intake, milk yield and its composition of lactating SAPERA goats fed with different levels of dietary energy and protein in concentrate diet. Thirty multiparous SAPERA goats were used in a randomized block design with three treatments (R1, R2 and R3) and ten replications for 12 weeks of lactation. The concentrate diets were formulated to contain: 18% CP and 72% TDN (R1), 17% CP and 75% TDN (R2), 16% CP and 78% TDN (R3). Those does were penned individually, and fed by basal diet (fresh chopped King Grass ad libitum, 500 g of fresh mixed forages) and 1 kg of experimental concentrate. Results showed that the treatments had significant (P<0.05) effects on CP, DIP, Ca, P intakes and FCR but had no significant (P>0.05) effects on DM and TDN intake. No significant differences were found in milk yield and milk composition between treatments. In conclusion, this trial suggested that the best feed for lactating SAPERA goats was the mixture of chopped grasses, mixed f...

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