No, it is more to do with your lack of understanding of what really is the constitution w.r.t to cow slaughter.
"The "Preservation, protection and improvement of stock and prevention of animal diseases, veterinary training and practice" is Entry 15 of the State List of the Seventh Schedule of the Constitution, meaning that State Legislatures have exclusive powers to legislate the prevention of slaughter and preservation of cattle."
No state law explicitly bans the consumption of beef. There is a lack of uniformity among State laws governing cattle slaughter. The strictest laws are in Delhi, Gujarat, Maharashtra, Madhya Pradesh, Punjab, Rajasthan and Uttar Pradesh, where the slaughter of cow and its progeny, including bulls and bullocks of all ages, is completely banned. Most States prohibit the slaughter of cows of all ages. However, Assam and West Bengal permit the slaughter of cows of over the ages of 10 and 14 years, respectively. Most States prohibit the slaughter of calves, whether male or female. With the exception of Bihar and Rajasthan, where age of a calf is given as below 3 years, the other States have not defined the age of a calf. According to the National Commission on Cattle, the definition of a calf being followed in Maharashtra, by some executive instructions, was "below the age of 1 year"