Pigs are livestock that has a significant meaning for the local Papuan community. Pig rearing is done traditionally from generation to generation without providing technical input to increase productivity. Therefore, this study aimed to examine the determining factors that influence the production of pigs. This research was conducted in three districts in West Papua, namely Manokwari, Bintuni, and Sorong. A semi-structured questionnaire was employed for data collection and supported by key informant group discussions. Respondents were sample dusing purposive random sampling under predetermined criteria and then randomized. Aregression equation was used to analyze the production system of raising pigs by evaluating the relationship between the production of breeding pigs and the influencing factors. The results of the analysis of the determinants showed that the amount of feed, working time, and experience in pig breeding had a positive effect on pig production. Therefore, to optimize pig production, it is necessary to increase feeding, working time, and experience in raising pigs.
Using simple materials, an intravaginal device ((IVD) for sheep was designed to collect semen under field conditions. The IVD was made using 25 cc disposable syringes, Terumo with 9 mm internal diameter and 9 cm long, 9.5 mm internal diameter and 9.5 cm long plastic tubes (M&M) were also used. Semen was collected with a washed condom. The device was inserted into the vaginal canal of the ewe moments before allowing the ram to mount her. When the ram ejaculated, the IVD was removed and the quality of the semen obtained was determined. On two sheep farms, it was observed that the quality of the semen obtained was viable for freezing or fresh insemination. The proposed method for the collection of ovine semen with an intravaginal device of handmade construction is suitable and can be of great help to sheep breeders all over the world, due to its easy fabrication in the field.
This study was conducted to determine the effect of the naked neck gene on the growth performance and carcass characteristics as well as plasma concentrations of thyroid hormones and their precursor in F1 crossbred broilers. The experiment involved crossing seventy normal feathered Hubbard Flex 15 broiler breeder females and seven locally developed naked neck males to obtain 320 chicks from four batches of hatch. The design was RCBD with the two phenotypes (normal feathered birds and naked neck birds) being the treatments. The results showed that the naked neck birds had higher (p ≤ 0.05) weight gain than the normal feathered birds. There were however no differences (p ≥ 0.05) in feed intake, feed conversion ratio and plasma concentrations of thyroid hormones T3, T4 and their precursor, TSH. The live weight, bled weight, defeathered weight, dressed weight, head, back, breast and drumstick were heavier (p≤0.05) in the naked neck birds than the normal feathered birds. The thigh, abdominal fat, neck, shank and the internal organs showed no (p≥0.05) difference in the two phenotypes. The naked neck gene has a positive effect on meat type chickens and may therefore be the best phenotype for broiler production under humid tropical conditions.