Tamil Nadu Agricultural University with its seven colleges and thirty-two research stations spread over the entire state contributes to evolving new crop varieties and technologies and disseminating through various extension agencies. Among states in India, Tamil Nadu is one of the leaders in livestock, poultry, and fisheries production. Tamil Nadu had the second largest number of poultry amongst all the states and accounted for 17.7 per cent of the total poultry population in India. In 2003–2004, Tamil Nadu had produced 3783.6 million of eggs, which was the second-highest in India representing 9.37 per cent of the total egg production in the country. With the second-longest coastline in India, Tamil Nadu represented 27.54 per cent of the total value of fish and fishery products exported by India in 2006. Namakkal is also one of the major centers of egg production in India. Oddanchatram is one of the major centers for vegetable supply in Tamil Nadu and is also known as the vegetable city of Tamil Nadu.Coimbatore is one of the major centers for poultry production. Textiles and leather Tamil Nadu is one of the leading states in the textile sector and it houses the country's largest spinning industry accounting for almost 80 per cent of the total installed capacity in India. When it comes to yarn production, the State contributes 40 per cent of the total production in the country. There are 2,614 Hand Processing Units (25 per cent of total units in the country) and 985 Power Processing Units (40 per cent of total units in the country) in Tamil Nadu. According to official data, the textile industry in Tamil Nadu accounts for 17 per cent of the total invested capital in all the industries. Coimbatore is often referred to as the "Manchester of South India" due to its cotton production and textile industries. Tirupur is the country's largest exporter of knitwear. for its cotton production. Tamil Nadu accounts for 60 per cent of leather tanning capacity in India and 38 per cent of all leather footwear, garments and components. The state also accounts for 50 per cent of leather exports from India, valued at around US$3.3 billion of the total US$6.5 billion from India. Hundreds of leather and tannery facilities are located around Vellore and its nearby towns. Automobiles Tamil Nadu has seen major investments in the automobile industry over many decades manufacturing cars, railway coaches, battle-tanks, tractors, motorcycles,