COLLECTING
SAMPLING

Guidelines for sampling and packaging of :

SAMPLING

GOAL

The goal of the analysis is to determine criterions to predict the food value of the product and make up balanced rations for animals.
Our analytical methods are AFNOR recommended and INRA approved.
SADEF joins the BIPEA for interlaboratory sample controls, used for a monthly comparison of the analytical results.

SAMPLING QUALITY IS ESSENTIAL

The best analysis will only indicate what the tested sample is. Sampling is a very important step in obtaining meaningful information. The following is some guidelines to follow :

When ?

Silage sample should be collected as the silo is being filled. Results will give a better prediction of the energetic value, and will be available when opening the silo. The preservation quality of the ensiling will be checked on site (pH) or with a specific analysis of preservation (pH, soluble nitrogen, ammonium nitrogen).

Hay samples are best collected just before setting the bale.

	Ensilage sampling : take 15 samples at different times as the silo is being filled. Mix them together and take a sample of about 500 to 700 g for analysis.
	Ensiling sampling after opening of the silo : take 10 to 15 samples from different sections across the face on the ensiled material.
	Hay sampling from a windrow : take 15 samples from different depths (high, medium, low). Mix them. Take a sample of 300 to 500 g with a knife.

PRODUCT INFORMATION IS ALSO ESSENTIAL FOR THE INTERPRETATION

SADEF can give you the energetic value of your forage only if you provide indications about your forage : nature of the forage, vegetative cycle, stage of developpment when harvested, harvesting conditions, preservation conditions.

PACKAGING

SADEF can provide :

nets (for grass).
plastic bags for ensiling and concentrates.

Sample weight required for analysis :

300 to 500 g for a hay or concentrate sample.
500 to 700 g for an ensiling sample.
800 to 1000 g for green grass.