Category Archives: Volume 12 Nos. 1 – 4 (1990)

Efficacy of Rintal (Febantel) at Different Dosage Levels against Ascaridia galli among Artificially Infected Broiler Chickens


Author(s): Alberto A. Taveros

Abstract

Febantel given at dosage levels of 0.25, 0.50 and 1.00 g per bird reduced Ascaridia galli eggs in fecal samples of broiler chickens by 61.4, 94.07 and 100%, respectively, and adult A. galli by 33.98, 81.11 and 100%, respectively. Statistical analysis indicated that 1.00 g Febantel per bird was the most effective in reducing coprological egg output and adult parasites.

Keywords : Ascaridia gali (Ascaris). Coprological egg output. Rintal (Febantel)

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Effect of Salt Supplementation Method on Broiler Performance


Author(s): Lolito C. Bestil and Steven L. Newby

Abstract

Different methods of giving supplemental NaCI, in liquid or solid forms, either mixed in the ration at required level or offered separately at ad libitum, did not significant affect feed intake, weight gain, feed conversion efficiency, return above feed and chick cost, or feed cost per kg broiler produced. However, mortality-morbidity rate significantly differed among treatments and was highest in birds receiving ad libitum sea water.
Birds were found to have greater tolerance to larger amounts of salt offered dry than in solution form probably because assimilation of elements is faster using liquid than solid form. The availability of sea water at no cost makes it an economical salt supplement, but only when mixed in the ration rather than offered at free choice. However, the sea water level in the feed should be less than the amount needed to meet the salt requirement (143 ml/kg feed) so as to reduce mortality-morbidity rate, especially if some of the feed ingredients used contain considerable amounts of Na and CI.

Keywords : Broiler performance. Dry salt. NaCI supplementation. Sea water

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Evaluation and Modification of a Manually Operated Coffee Pulper


Author(s): Emmanuel C. Canillas and David L. Dumaluan

Abstract

The modified coffee pulper is made of wood, galvanized iron sheet and steel plates. Tha average output is 50.7 kg/hr, about 1.5 times the output of the original machine. The storage duration of the berries after harvesting significantly affected the pulping capacity of the machine. The pulping capacity was highest (51.1 kg/hr) when the berries were stored 5 days prior to pulping and was lowest (49.9 kg/hr) at one day storage duration.

Keywords : Coffee berries. Modified coffee pulper.

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Use of Potassium Sorbate and Natamycin to Inhibit the Growth and Aflatoxin Production of Aspergillus parasiticus 299 in Improved Binagol


Author(s): Lutgada S. Palomar and Lloyd B. Bullerman

Abstract

Binagol (pH 6.3) was reformulated using lemon juice to lower the pH to 5.5, 5.0 and 4.5. Sensory evaluation was done to determine the acceptability of the binagol with lower pH, using the original binagol at pH 6.3 as the control. Sensory evaluation showed binagol can be acidified to pH 5.5 without noticeable differences from the original. Potassium sorbate and/or natamycin were used to inhibit growth and aflatoxin production by Aspergillus parasiticus in the original and modified binagol. Shelf life was improved by using the inhibitors at the lower pH. At pH 5.5., a combination of potassium sorbate and natamycin extended the shelf life of binagol to 21 days. A synergistic effect of increased aflatoxin inhibition was observed whn potassium sorbate and natamcyin were combine at half of the effective levels needed for each one alone.

Keywords : Aflatoxin. Aspergillus parasiticus. Binagol. Lemon juice. Natamycin. pH. Potassium sorbate.

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Biology and Host Range of the Coconut Leaffolder, Telicota palmarum Moore ( Hesperiidae, Lepidoptera)


Author(s): Lorenza B. de Pedro, Lucia M. Borines and Dely P. Gapasin

Abstract

The biology and host range of the coconut leafholder, Telicota palmarum Moore, was studied in the laboratory. The insect underwent five larval instars with an average total developmental period of 35.0 days for males and 35.2 days for females. The males live longer than females with a longevity of 3.9 and 2.4 days, respectively. Fifteen out of 24 plant species tested were fed on by the coconut leafholder after 24 hrs. Three among the 15 species were further used as food substrate until the insects completed its developmental period. The insect was able to emerge into adults in only one plant, Bunga de China (Adonidian merrillii Becc).

Keywords : Alternate host. Behavior. Coconut. Coconut leaffolder. Development. Insect pest. Life history. Telicota palmarum.

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Biology of Sweetpotato Bug, Physomerus grossipes Fabr. (Coreidae, Hemiptera)


Author(s): Susan F. Ronato and Nelson M. Esguerra

Abstract

Eggs of the sweetpotato bug are laid in groups on the underside of leaves. The eggs have an incubation period of 15.82 days and hatchability of 86.8%. There are five nymphal instars. Total mean developmental period is 85.45 days for males and 87.69 days for females. Adult males and females are similar in general appearance except that the last abdominal segment of the male is more pointed than that of the female and the hind leg of the male has a characteristics spine. Then bugs are normally most abundant from January to April and least from July to August. One parasitic species of wasp belonging to family Eulophidae (Order Hymenoptera) was observed on field-collected eggs. Plant species namely, Ipomoea aquatic, Ipomoea triloba and Bacella rubra could serve as alternate hosts of the insects.

Keywords : Biology. Sweetpotato bu (Physomerus grossipes Fabr.)

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