These pens were located in a ventilated pig house. The animals were housed individually in pens with cement floor and provided of a feeding trough and a drinker. The objective of the present study was to report experimental data concerning rectal digestibility and fecal output of fattening pigs given avocado paste as energy source. However, in the knowledge of the authors, there are not available data concerning digestibility indices related to the use of the entire, ground and fresh discarded avocado fruits in form of paste, for feeding pigs. Instead, it has been found that the fresh and ground fruit, in form of fresh avocado paste, could be mixed with the other diet components and given as such to pigs ( Frànquez et al. On the other hand, avocado seeds and peels disposal should create a new problem of environmental pollution, in those sites where either fruit processing plants of great markets are placed. In this context, the use of the discarded entire fruit should be an interesting alternative for animal feeding, since the separation of the fruit pulp from seed and peel ( Grageola 2010) is not practical. 2010), but not the entire fruit ( Ly et al. In this connection, it was found that nutrient digestibility at the rectal site of this type of feed was relatively high, when avocado pulp ( Grageola et al. 2010), in spite that discarded avocados have envisaged as a potential source of energy for feeding pigs ( Carter 2015 and Dione et al. 2010), among others, there are scanty information concerning the feeding and nutritive value of diets rich in fat for pigs, due to the use of avocado ( Persea americana Mills) products ( Grageola 2010 and Grageola et al. 1992), palm oil ( Ocampo and Lean 1999) and corn oil ( Kil et al. In contrast with what occurs with other sources of vegetable fat such as canola meal ( Myer et al. Key words: pigs rectal digestibility fecal output tropical fruit Persea americana Mills A suggestion is made to study procedures allowing the increase in indices of rectal digestibility in pigs fed on fresh paste of discarded entire avocados. The majority of digestive indices were significantly (P<0.05) correlated among them. There was a significant (P=0.049) trend toward an increase in fecal output of materials (614 and 740 g fresh material/kg DM intake).
The diet containing 21% of avocados determined a significant (P0.10) nor for acidified ether extract digestibility (65.3 and 83.0% P=0.001). The fresh paste of discarded entire avocados contained 14.3% crude fibre, 49.1% crude fat and 9.0% crude protein (N圆.25) on a dry basis. The animals were allotted at random into two groups with an initial live weight of 67 kg and were fed, on an ad libitum basis, either 0 or 21% fresh paste of discarded entire avocados ( Persea americana Mills) of Hass variety from Nayarit, Mexico, consisting of seeds, peels and pulp of discarded ripe fruits which were mixed and ground with the other ingredients of the diet. Rectal digestibility of nutrients was determined in 16 crossbred pigs, castrated males and females in equal proportion, and averaging 115 kg live weight.
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