Reproductive Performance Of Kacang And Peranakan Etawah Goat In Indonesia

Evaluasi performans reproduksi kambing kacang dan Peranakan Etawah (PE) yang telah beradaptasi dapat memberikan informasi penting untuk mengetahui potensi produksi sebagai sumberdaya lokal. Data reproduksi dikoleksi dari 280 induk PE dan 200 kambing kacang melalui penelitian di lapangan dan monitoring lebih dari 1,5 tahun pada peternak di Jawa Tengah, Indonesia. Kejadian reproduksi, tanggal beranak dan jumlah anak yang diamati dicatat. Data dianalisis dengan menggunakan statistik deskriptif. Hasil penelitian menunjukkan bahwa rataan litter size antara 1-3 anak per kelahiran untuk seluruh induk dengan rataan untuk kambing kacang dan PE masing-masing adalah 2,06 dan  1,56 anak. Bobot lahir pada kambing kacang dan PE masing-masing adalah 3,8 dan 5,4 kg. Daya hidup sampai penyapihan untuk kambing kacang dan PE masing-masing adalah 97% dan 92%. Selang beranak pada induk kambing minimum 205 hari pada kambing kacang dan maksimum 450 hari pada kambing PE. Indeks reproduksi induk kambing kacang dan PE masing-masing adalah 3,07 dan 1,65 anak/induk/tahun. (Animal Production 4(2): 52-59 (2002)  Kata Kunci : Kambing Kacang, Kambing Peranakan Etawah, Reproduksi, Indonesia

The Effect of Fish Meal Substitution with Squilla empusa on Reproductive Performance of Local duck

A study has been conducted to know the effect of fishmeal substitution with Squilla empusa on reproductive performance of local duck.  Randomized Completely Design was applied in this experimental. Ninety-six grower local ducks were divided into six treatments ration. Each treatment was replicated by four replications and consists of four local ducks each. The treatment was P0 = 0 % Squilla empusa and 10 % fish meal, P1 = 2 % Squilla empusa and 8 % fish meal, P2 = 4 % Squilla empusa and 6 % fish meal, P3 = 6 % Squilla empusa and 4 % fish meal, P4 = 8 % Squilla empusa and 2 % fish meal, and P5 = 10 % Squilla empusa and 0 % fishmeal.  Parameters observed was reproductive performance consisted of sexual maturity, average egg production and egg weight during 3 months of production period. The result showed that fishmeal and Squilla empusa had very significant by effect (P<0,01) on feed consumption, sexual maturity, egg production and egg weight. It was significant by (P< 0,05) on egg production and weight. It was concluded that substitution up to 4.96 % of Squilla empusa give the latest of sexual maturity (5.8 month); the lowers egg production was at 6 % Squilla empusa; at 10 % Squilla empusa egg weight tended to increase. (Animal Production 6(2): 110-117 (2004) Key Words: substitution,  Squilla empusa, reproductive performance

The Effect of Feed and Gonadotrophin Hormone on The Litter Size and Birth Weight of Local Goat

A study was conducted to determine the effect of ration and gonadotrophin hormone on the reproductive performance of breeding goat. Twenty-three does and six bucks having a similar age (1.5-2.0 years old) were exposed in this experiment. An amount of 200 gram of concentrate consisting of yellow corn (30%), rice brand (50%) and commercial concentrate CP 235 (20%) has been given to each experimental animal. The experimental animals were divided into two groups. The group was fed (12 animals) with M1 (roughage + concentrate) and the other group was fed (11 animals) with M2 (roughage). Moreover, each group were divided into four treatment namely: T1 (PGF2α), T2 (PGF2α + PMSG), T3 (PGF2α + HCG) and T4 (PGF2α + PMSG + HCG). The same treatment was applied to the other group. The data such as litter size and birth weight were collected from each experimental goat. Those data were analyzed using a 2 x 4 factorial experiment with unequal repetition. A composition between to treatment group was done using Least Significant Design (LSD). The result of the study showed that the effect of ration and gonadotrophin hormone on litter size and birth weight didn’t show any significant difference (P>0.05). The average of litter size and birth weight from roughage + concentrate treated animal (goat) were 1.92 and 1.51 kilogram respectively. However, the average of litter size and birth weight from roughage treated group were 1.58 and 1.48 kilogram respectively. (Animal Production 5(1): 5-10 (2003) Key words : Gonadotrophin, PGF2α, PMSG, Hormone, Goat