Theses and Dissertations

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Comparative evaluation of hog manure based organic fertilizer and inorganic fertilizer on the yield of mustard (Brassica juncea L.) [manuscript]
(2020) Edison R. Parica
Mustard is a cool season vegetable that prefers a sunny location and fertile soil. In-order to grow. Fertilizer is needed to ensure its good quality. Fertilizer can be either chemical fertilizer or organic. Inorganic fertilizer or also known as commercial fertilizer are from synthetic compounds. Advantage of inorganic fertilizer, it releases nutrients easily into the soil and absorbed by the plants. The disadvantage of this is the cost is relatively much higher than organic fertilizer. Organic fertilizer are fertilizers derived from animal waste, human waste and vegetable waste. Naturally, occurring organic fertilizer are fertilizers derived from animal waste, from meat processing, peat, manure, slurry and guano. This study aimed to prepare organic fertilizer from hog manure enhance with bio-plus activator; evaluate the effect of hog manure and the used of inorganic fertilizer on the growth and development of the mustard; determine the benefits derived from application hog manure and inorganic fertilizer; asses the effect of hog manure and fertilizer on the soil and ; determine the profitability on the use of hog manure and inorganic fertilizer. In this study there were two fertilizer treatments and three replicates. Growth related parameters namely; the plant height, length of leaves, weight of plant, number of marketable and non-marketable leaves, root system, were compared using t-test. The result of this study in terms of the plant height, length of leaves, weight of plant and number of marketable leaves have a significant difference among treatments means. The result of this study in terms of root system and unmarketable leaves have no significant difference among treatment means. Treatment 1 (inorganic) has the better result compared to Treatment 2 (organic).
Comparative study on the growth and yield performance of tomato (Solanum lycopersicum var. Diamante max) plant fertilized with organic and inorganic fertilizer contaminated with cadmium (Cd) [manuscript]
(2019) Jonas O. Cail
In the growth of tomato, fertilizers are needed to serve as supplement for its growth and development. Chemical fertilizers are made from any inorganic material of synthetic origin. Farmers may use either chemical or organic fertilizers depending on their preference. This study aimed to compare the growth and yield performance of tomato fertilized by inorganic and organic fertilizers. It also determined their agronomic characteristics, as relate to environmental parameter. The study used tomato for comparison because it grows easily, less expensive, adapted to well-drained soils that have good air and water infiltration rates and the availability of its seedlings in the market. Moreover, tomato is the most popular home garden and the third most consumed crop in the world. In current study, tomato seedlings were subjected to two fertilizers treatment with three replicates. Treatment I utilized inorganic fertilizer, while treatment II an organic fertilizer was applied, growth related parameter namely: the plant height, size of fruits, weight of fruits, and number of marketable and non-marketable fruits, growth and yield performance were compared using t-test. Results disclosed that in terms of yield, plant height, size of fruits, weight of fruits and number of marketable fruits. Treatment I (inorganic) has a better results compared to Treatment II (organic). The study revealed that treatment II resulted better to a lesser number of days to flower, days to fruits and roots system. High temperature, low humidity, pH and precipitation can affect the growth of tomato because it produce low yield of crops.
Dietary probiotics as a supplement for broilers in conventional housing [manuscript]
(2020) Ricalyn C. Soriano
The study involved 90 Cobb straight run broiler chicks randomly assigned to Control (45 birds) and Treatment 1 (45 birds) with 15 birds per replicate to determine the effects of dietary probiotics on the growth performance under conventional housing. The specifically, this study aimed to a.) evaluate the growth performance of broilers fed with and without probiotics; b.) compare the carcass yield and gut morphology (abdominal fat weight, abdominal fat percentage, liver weight, intestinal weight and intestinal length) of broilers fed with and without probiotics; and c.) compare the economic benefit of broilers fed with and without probiotics. Treatment description were namely: SD (Standard Diet) and SD + Dietary Probiotic at 200g/100kg. The experiment was conducted for 35 days. The results showed a significant improvement (p<0.05) in feed intake and feed conversion ratio. The gut morphology examination showed that probiotics had beneficial effect on dietary probiotics causing a significant increase on liver weight compared to fed without probiotics. Further study is needed to find the optimum application of such additives including their optimum dosage level in the feed in order to obtain maximum effects.
Major practice in swine production [manuscript]
(2020) Reicy Joezel D. Geronimo
The Department of Animal Science, College of Agriculture, Central Luzon State University offered the major practice program with the main purpose of producing graduates which are skillfull, knowledgeable and confident in their field of specialization. The major practice conducted from July 2019 to December 2019 at the APO Swine Module I. The student was exposed to the different management practices on the farm.It includes management of pregnant sow as well as lactating sow, suckling and weanling management and boar and dry sow management. The APO Swine Module I recorded a farrowing rate of 62.5 percent with litter index of 1.9 from the average of 19.4 sow level for 5 months of major practice duration. During the major practice, the project has a total of 24 breeding and 15 litters. Also, the farm registered a 11.27 average piglets per litter and piglets born alive per litter is 10.93. Other production performance recorded were as follows: 9.13 piglets weaned per litter, 9.13 pglets reared per litter, 1.59 kg average birth weight, average weaning weight of 7.56, pre-weaning mortality of 16.46 percent, no case of post-weaning mortality and piglets born per sow per year of 11.27.
Mitigating ammonia emission by dietary probiotics in starter broiler diets [manuscript]
(2020) Jesilyn P. Pascua
This study was aimed to assess the effectiveness of dietary probiotics on growth performance of broilers and mitigation of ammonia emission in a conventional broiler house. A total of 90 straight-run Cobb 500 broilers were randomly allocated into two (2) dietary treatments with three replicates per treatment and fifteen birds per replicate for 21 days.Growth performance was evaluated while the periodic ammonia emission was recorded by the daily smelling of a freshly laundered t-shirt hanged from the center of the broiler houses in each treatment every 6:00 PM. Results disclosed that a 19% reduction rate in ammonia emission was demonstrated from the broiler cages supplemented with dietary probiotics when compared to the control diet suggesting its environmental benefit in terms of improved air quality in the broiler house. However, in terms of growth performance, the inclusion rate of dietary probiotics at 100 g per 100 kg mixed diet did not favor the improvement (p<0.05) on body weight (BW), gain in weight (GW), feed conversion ratio (PCR), average daily gain (ADG) and average daily feed intake (DFT). Livability, however was comparable suggest the safe usage of the probiotics in the diet for broilers. There was no economic benefit of probiotic inclusion in the diet due to lower final body weight and lesser number of broilers at the end of the starter stage.
Mitigation ammonia emission by dietary probiotics in broiler finishing diets [manuscript]
(2020) Niqee Roxanne Joy L. Isoc
A total of ninety, day old straight-run Cobb 500 broiler chicks, were assessed for their growth, economic performance and manure ammonia emission during the finishing period. Each treatment had 3 replicates at fifteen (15) birds per replicate. The birds were allocated to two dietary treatments, the untreated and treated with probiotics. Cage arrangements per treatment were divided at the center with sack partition for ammonia emission by T-shirt method following a practical odor scale rating. Results indicated that there was no significant difference (P<0.05) on body weight gain, feed intake and feed conversion efficiency. Livability rate was comparable, however, the income over feed and chick cost was lower for the treatment given dietary probiotics. Ammonia emission from manure of experimental birds fed dietary probiotics was mitigated more efficiently compared to the control as shown by an average odor scale rating of 1.64 for the treated and 2.64 from the control during the entire 14-day duration of the experiment. Dietary probiotic inclusion in broilers did not adversely affect their growth performance however, it was effective in mitigating ammonia emission from their manure. Therefore, probiotics can be recommended as an environment friendly feed supplement for broiler diet.
The Ecological and economic benefits of Rice-Duck-Pig Farming System at the Future Rice Farm of PhilRice [manuscript]
(2020) Andrea N. Adriano
A rice duck pig farming system integrated to an existing ICT-enable (IOT), climate smart with air quality sensors from a 30 head Zero Waste Pig (ZWAP) housing system was described in this study. Fifty-four ducks at two weeks old were introduced in a 485.76 meter square mesh net fenced enclosed paddy field, when the rice plants were fourteen days old after day of transplanting to document the ecological benefits. the investment cost and net profit derived from fresh palay and organic milled rice sales recorded to demonstrate its economic benefits. Result demonstrated an ecological benefits of rice-duck-pig farming system as evidence by the presence of ducks in the paddy field, resulting to reduction in weeds and pest in the paddy field. Considering a fresh palay yield of 85.4 kg with the duck's feces and pig slurry as the main source of fertilizer, the nutrient supplying effect of rice-duck-pig farming system was therefore demonstrated. Finally, a net income from palay sales was Php 872.00 and Php 4,890.00 for organic milled rice was realized indicating the economic benefits. Therefore, the integrated rice-duck-pig farming system can be recommended as a feasible and environmentally friendly farming system due to its ecological and economic benefits.

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Browsing Theses and Dissertations by Adviser "ANTONIO J. BARROGA, Ph.D."

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