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All Journal Buletin Peternakan
Ali Agus
Department of Animal Nutrition and Feed Science, Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia

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The Effect of High Quality Feed Supplement on Growth Performance Post-Weaning Calves Besse Mahbuba We Tenri Gading; Panjono Panjono; Ali Agus
Buletin Peternakan Vol 43, No 2 (2019): BULETIN PETERNAKAN VOL. 43 (2) MAY 2019
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v43i2.38905

Abstract

This research aimed to evaluate the effect of high quality feed supplement (HQFS) in growth performance of post-weaning calves. Twenty four calves post-weaning aged 6 months old, consisting of 12 males and 12 females, randomly divided into 2 groups, each group consisting of 6 calves. Grouping male and female calves fed control feed plus HQFS, was formulated from corn grain, corn gluten meal (CGM), pollard, soybean meal (SBM), wheat flour and agromix booster (treatment diet) as first group (treatment), and the second group was fed control feed without addition of HQFS (control). This study was conducted for 6 weeks. The variables observed included feed intake (dry matter, crude protein, and TDN), weight gain, feed conversion, feed cost per gain and body size (body length, chest girth, and withers height). The treatment was in factorial 2x2 in a Completely Randomized Design (CRD). Growth performance of post weaning calves were analyzed as repeated measures with feed (treatment and control) and sex (male and female) as factors.  Results showed that the CP consumption, ADG and chest girth of treatment group was higher than (P<0.01) than the control group (0.42 and 0.34 kg/d, 0.95 and 0.71 kg/d, and 12.41 and 8.25 cm). TDN consumption, feed conversion, and body length of the treatment group were higher (P<0.05) than the control group (3.08 and 2.57 kg/d, 3.64 and 4.86, and 8.12 and 5.95 cm). DM consumption, chest girth and feed cost per gain of treatment and control group were not significant (3.87 and 3.69 kg/d, 7.30 and 6.72 cm, and IDR 16,280.00 and IDR 19,167.00). There was no difference between the growth of post-weaning calves between the male and female groups. There was no interaction between feed type and sex of the post-weaning calves. The conclusion of this study was that post-weaning calves fed HQFS (20.2%) produced better growth performance than controls.
Identification of Glucogenic Amino Acids Content in Gliricidia maculata as an Alternative Energy Source for High-Yielding Periparturient Dairy Cows Sulvia Dwi Astuti SW; Budi Prasetyo Widyobroto; Ali Agus; Lies Mira Yusiati
Buletin Peternakan Vol 44, No 2 (2020): BULETIN PETERNAKAN VOL. 44 (2) MAY 2020
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v44i2.54103

Abstract

Gliricidia maculata which has long been used as a forage for animal feed may contain a variety of glucogenic amino acids variants. The objective of this study was to identify the glucogenic amino acids content in Gliricidia maculata as an alternative source of energy for high-yielding periparturient dairy cows. The samples were the edible portion of plants, harvested randomly at the optimal cutting age (80 days), from the feed plant collection garden of The Faculty of Animal Science, Universitas Gadjah Mada. Lyophilization was carried out by drying the samples at 55°C for 3 x 24 hours continouesly in a Sanyo Drying Oven MOV-112. Pulverization was done by the Foss Tecator CyclotecTM 1093 Sample Mill with 300 mesh (1 mm screen). The hydrolysis of amino acid was carried out using HCl solution while amino acid derivatization used O-phtalaldehyde (OPA) solution. Separation, determination, and quantification of amino acid were carried out by an analytical method in gradient elution using the Thermo ScientificTM DionexTM UltiMateTM 3000 UHPLC Systems with Rapid Separation Fluorescence Detector. Result showed there were at least fourteen kinds of amino acids identified from the samples, i.e.: aspartic acid, glutamic acid, serine, histidine, glycine, arginine, alanine, tyrosin, methionine, valine, phenylalanine, isoleucine, leucine and lysine. Gliricidia maculata contains 1349 ppm glucogenic amino acids, 412.7 ppm ketogenic amino acids and 444.7 ppm glucogenic and ketogenic amino acids. Moreover, there were three types of glucogenic amino acids with the highest concentration were serine (288.7 ppm), glutamic acid (245.5 ppm) and phenylalanine (197.1 ppm) respectively. Glucogenic amino acids can be used as an energy source for dairy cows through gluconeogenesis. This study suggests that Gliricidia maculata may use to supply the precursors of energy for high-yielding periparturient dairy cows to prevent ketosis.