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All Journal JURNAL PETERNAKAN Jurnal Riset Kimia Jurnal Peternakan Mahaputra
John Hendri
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Agriculture, Biological Sciences & Forestry Chemistry Veterinary

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RESPON ESTRUS KUDA LOKAL DENGAN INDUKSI HORMON PGF2α DI KOTA PAYAKUMBUH Haris Satria; Dara Surtina; John Hendri; Jaswandi Jaswandi
Jurnal Peternakan Vol 14, No 2 (2017): September 2017
Publisher : State Islamic University of Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jupet.v14i2.3674

Abstract

Penelitian ini bertujuan mengetahui respon berahi kuda lokal betina yang dipekerjakan menggunakan teknik induksi hormon prostaglandin F2 alfa (PGF2α) secara intramuskular. Sampel yang digunakan dalam penelitian ini adalah 20 ekor kuda betina dengan umur 5-10 tahun yang tidak dalam keadaan bunting atau pada saat fase luteal. Metode singkronisasi estrus dilakukan dengan menginduksi PGF2α (Prostaglandin) dengan dosis 10 mg i.m pada jam 08.00 pagi sebelum ternak kuda dipekerjakan. Pengamatan tingkah laku estrus dilakukan mulai dari satu hari setelah induksi PGF2α sampai munculnya tanda-tanda estrus. Pengamatan tingkah laku estrus dilakukan dengan sistem scoring menurut Colemandan Powell. Data hasil penelitian dianalisis secara deskriptif dan disajikan dalam bentuk rataan dan simpangan baku. Hasil pengamatan menunjukkan bahwa seluruh ternak kuda yang diinduksi dengan 10 mg i.m PGF2α memperlihatkan gejala estrus, namun tanda estrus sangat bervariasi yaitu scoring 1 sebanyak 1 ekor, scoring 2  sebanyak 3 ekor, scoring 3 sebanyak 8 ekor dan scoring 4  sebanyak 7 ekor dengan rata-rata 3.05 ± 0.88 scoring, dan persentase tertinggi pada scoring 3 yaitu 40% dan scoring 4 hanya 35%. Apabila dilihat dari hari mulai meresponya ternak kuda setelah diinduksi hormon PGF2α tergolong cepat yaitu pada 4.25 ± 1.01 hari.
KEMAMPUAN ADSORPSI KITOSAN UNTUK ION LOGAM TIMBAL (Pb2+) DAN KADMIUM (Cd2+) John Hendri; Rahmawati -; Aspita Laila
Jurnal Riset Kimia Vol. 2 No. 1 (2008): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i1.60

Abstract

 ABSTRACT Chitosan is natural polymer that has been known to posses the capacity to adsorb various transition metals. This capacity of adsorption is resulted from the ability of chitosan to form complex compound with metal, especially Pb and Cd. The  formation of chitosan-metal complex is enabled by the presence of active hydroxil group in chitosan molecule. The results of this study on adsorption of Pb2+ and Cd2+ revealed the existence of linear relationship between the amount of the metal adsorbed with concentration of the metal tested. It was found that for Pb2+, the maximum adsorption was 10.32 mg/g which was achieved for the metal concentration of 50 mg/L, and 24.998 mg/g for Cd2+ at metal concentration of 100 mg/L. The optimum contact time for adsorption was found to be 24 hours for both metals. The adsorption was found to take place with the adsorption energy of 29.82 kJ/mol for Pb2+ and 17.23 kJ/mol for Cd2+.  Keywords:  chitin, chitosan, adsorption, transition metal, and toxic metal 
Evaluasi Keseimbangan Nutrisi Sapi Perah Betina Dewasa di UPTD Puskeswan Kota Padang Panjang John Hendri; Alfian Asri
Jurnal Peternakan Mahaputra Vol. 1 No. 1 (2020): Jurnal Peternakan Mahaputra
Publisher : Program Studi Peternakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36665/jpm.v1i1.30

Abstract

This study aims to evaluate the nutritional balance of adult female dairy cows at UPTD Puskeswan Padang Panjang. The livestock used in this study were all adult female dairy cows (who had given birth) from the Fries Holland breed that were kept in the breeding cage of UPTD Puskeswan Padang Panjang City with physiological status, namely 1 pregnant lactation, 5 non-pregnant cows and dry pregnant cages as much as 2 tails. The variables measured in this study were the consumption of dry matter (DM) feed, consumption of TDN, consumption of crude protein (CP) and consumption of calcium (Ca). The data obtained every day were then tabulated based on the range of consumption of DM, the range of TDN consumption, the range of CP consumption and the range of Ca consumption for dairy cows / head / day and then compared with the standards from the National Research Council (NRC) 1978 table. The analysis was carried out descriptively. Descriptive analysis was used to explain nutrient balance. From the results of the study it can be concluded: 1) dry matter consumption of all lactating cows and dry cows in pregnant cows is higher than the need, 2) consumption of TDN and calcium for lactating cows with milk production below 5 kg /head / day and dry cows with pregnant cows with body weight 400 kg is higher than the need, while the consumption of TDN and calcium from lactating cows with milk production above 5 kg / head / day and pregnant cows with a body weight of 500 kg is lower than the need and 3) consumption of crude protein (CP) of all lactating cows and pregnant pen dry cows with a body weight of 500 kg lower than the need, however the consumption of CP for pregnant cows with a body weight of 400 kg is higher than the need. In order to increase the productivity of the dairy cows that are kept, it is recommended that the managers of the UPTD Puskeswan Padang Panjang City improve the balance of forage and concentrate. To achieve a balance of 60% forage: 40% concentrate, fresh forage was given as much as 30.78 kg / head / day and concentrate was given as much as 20.52 kg / head / day.
Kualitas Semen Beku Sapi Limousin BIB Tuah Sakato yang Disimpan di Pusat Pembibitan Ternak Sapi Aripan dengan Waktu Thawing yang Berbeda John Hendri; Harissatria; Syafrizal; Rafi Suryade Putra
Jurnal Peternakan Mahaputra Vol. 2 No. 1 (2021): Jurnal Peternakan Mahaputra
Publisher : Program Studi Peternakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36665/jpm.v2i1.38

Abstract

The purpose of this study was to determine the effect of thawing time on the quality of frozen semen of Limousin cattle. This study used an experimental method with a completely randomized design (CRD) with 4 treatments, namely thawing time of 0 seconds, 30 seconds, 60 seconds and 90 seconds at 38oC and 4 replications. The material in this study was frozen semen of 16 straws of Limousin cattle with the same stud code. This research was conducted at the Laboratory of Animal Biotechnology, Andalas University, Padang. From the results of the study, it can be seen that the thawing time of 0 seconds, 30 seconds, 60 seconds and 90 seconds gave a very significant difference (P<0.01) for the percentage of life, percentage of motility and percentage of abnormalities that were thawed at 38oC. It was concludedthat the effect of thawing time of 0 seconds was high on the percentage of motility, percentage of survival and percentage of abnormalities for thawing that could cause spermatozoa (cold shock) or damage.
Co-Authors Alfian Asri Aspita Laila Dara Surtina Haris Satria Harissatria, Harissatria Jaswandi . Rafi Suryade Putra Rahmawati - Rizqia Fauzia syafrizal Syafrizal Syafrizal