Page 66 - Contributed Paper Session (CPS) - Volume 1

CPS1071 Ibarra Aaron R. Poliquit et al.

Redesigning of the Semi-Annual Survey of Dairy
Enterprises in the Philippines
1
2
1
Ibarra Aaron R. Poliquit , Jay R. Manlapaz , Divina Gracia L. del Prado ,
Abubakar S. Asaad , Erniel B. Barrios
4
1,3
1 Statistical Methodology Unit, Philippine Statistics Authority
2 Economic Sectoral Statistics Section, Philippine Statistics Authority
3 College of Public Health, University of the Philippines Manila
4 School of Statistics, University of the Philippines Diliman

Abstract
Listing of Dairy Farms was conducted in eight (8) priority provinces to generate
an updated list of dairy enterprises. A probability proportional size systematic
sample of barangays with the number of animals on the milk line as size
measure and a dairy farm sample size of 25 per sampled barangay generated
coefficient of variation and absolute percentage error below 10% for major-
producing provinces which are the provinces that have barangays with 25 or
more dairy farms. The simulation results provided an evidence that the
number of animals on the milk line as the size measure is better than the
number of female breeders as the size measure in terms of reliability of
provincial milk production estimates.

Keywords
Probability Proportional to Size Systematic; LH Algorithm; Simulation

1. Introduction
The Semi-Annual Survey of Dairy Enterprises (SSDE) is one of the regular
surveys conducted by the Livestock and Poultry Statistics Division (LPSD) of
the Philippine Statistics Authority (PSA). This survey aims to generate data on
dairy production and inventory of dairy animals nationwide1. Currently, the
sampling frame used is based on the Dairy Enterprise Inventory Profiling (DEIP)
2002 which consists of 46 provinces where dairying exists. Due to the
undercoverage of the sampling frame constructed in 2002, the estimate for
milk production and dairy animal inventory are underestimated2. On August
2016, Listing of Dairy Farms (LDF) was conducted in eight (8) priority provinces
identified by the Philippine Carabao Center (PCC) and the National Dairy
Authority (NDA). This activity aims to generate an updated list of dairy
enterprises3. Along with the updated list, a new estimation procedure is
necessary to determine the appropriate number of sample barangays for each
province and number of sample dairy enterprises for each sampled barangay
in eight (8) priority provinces.

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