aristotle
SPNer
They are condemened for this, as Vedas are clear. NO Moksha for those that conduct these animal sacrifices.
You may be wrong on that count, atleast the sacrifised animals are said to have attained Moksha. Animal sacrifise is verified time and again in the Sanatan scriptures, including the Vedas which mention the Gaumedh and Asvamedh Yagnas (See: http://en.wikipedia.org/wiki/Ashvamedha & http://www.sacred-texts.com/hin/rigveda/rv01162.htm), for attaining Moksha and authority, as I mentioned earlier.
The puissant Lord of all creatures caused the deities to perform sacrifices with their aid. Altogether seven (domestic) and seven (wild) animals are indicated as fit for sacrifice. Instead of all being equally fit, each succeeding one is inferior to each preceding one. The Vedas again declare that the whole universe is appointed for sacrifice. Him also that is called Purusha the Vedas have appointed for the same purpose. 4 This again hath been sanctioned by men of remote and remoter times. What man of learning is there that does not select, according to his own ability, individuals from among living creatures for sacrifice? 5 The inferior animals, human beings, trees, and herbs, all wish for the attainment of heaven. There is no means, however, except sacrifice, by which they can obtain the fruition.
(The Mahabharata, SECTION CCLXVIII)
Link: http://www.sacred-texts.com/hin/m12/m12b095.htm
Now, I don't know whether you consider the Mahabharata an authentic scripture or not.