Page 67 - Contributed Paper Session (CPS) - Volume 1

CPS1071 Ibarra Aaron R. Poliquit et al.
The LDF in selected provinces is an activity of the LPSD which aims to
provide an updated and reliable sampling frame for the SSDE. The 2016 LDF
covers household and commercial dairy farms in eight (8) priority provinces
namely: Cagayan, Isabela, Bulacan, Nueva Ecija, Batangas, Laguna, Bohol, and
Misamis Oriental. These were the priority provinces where dairying activity
were extensive as determined by the Philippine Carabao Center (PCC) and
National Dairy Authority (NDA). In preparing the barangay level frame, the
steps are detailed in Figure 1. Figures 2 to 9 illustrate the distribution of milk
production across the barangays per provinces. The figures show that the
distribution of milk production per province is positively skewed. The number
of animals on the milk line and milk production has the highest correlation (r
= 0.9355), the number of female breeders with milk production as the second
highest correlation (r = 0.6963), followed by inventory (r = 0.6934) and lastly
with farm capacity (r = 0.3336). The histograms of the distribution of milk
production was skewed and its correlation with some possible stratification
variables were high, suggesting the need to use the Lavallee-Hidiroglou (LH)
algorithm .
4

2. Methodology
2.1 Determination of Barangay Sample Size per Province
The barangays or PSUs were stratified based on the number of animals on
the milk line using the LH algorithm. Barangays contributing significantly to
the number of animals on the milk line are part of the ”must take” stratum and
were considered as a certainty stratum. In contrast, barangays that contribute
an insignificant number of animals on the milk line were classified under the

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