I watch as the new machine opens and the cow inside exits, its once small udders already swelling from the affects of the machine.

"Though a combination of nanobots, hormones and genetic modification this device will increase our yield tenfold, no more worrying about making our quota, with this every cow will be producing more milk, even the runts like this one here, not to mention that it makes them more docile as a bonus. It was pricey but I'm sure thw money will be made back in no time." The farm owner smiles pleased with himself as he shows us his new machine, one he got through not so legal means.

"Now, you all look after this device and take our newly improved cow to the milking machine."

"Yes sir." My colleague quickly moves up to the cow and leads her off to the milking area with the rest of her herd, by how effective the device was I'm sure she'll appreciate the milking. Now alone I walk up to the machine, it feels both unnatural and amazing at the same time. As I walk around it I hear a slight noise from inside, reaching the entrance I look inside, I hope this thing isn't already damaged, we can't afford for this to go wrong, the farm is struggling to make enough as it is. As I step inside to take a closer look I hear something outside fall over with a loud clatter and the door suddenly slides shut, leaving me in darkness. I turn in the small space and try to feel for a way to open the door but the wall is smooth. I panic slightly as I realise that I'm trapped inside as I hear strange sounds coming from the machine. Lines of light flow over me and metal cuffs lock around my ankles holding me in place as various arms move around me, my clothes quickly falling away as they're shredded. I stand frightened and exposed as several needles stab into me and inject me with something, a concoction of hormones, nanobots and gene modifiers, my body quickly becoming warm and my mind starts to grow fuzzy and slow as they changes take affect. I feel pain and a growing weight in my chest as my fingers also click painfully as they shrinks and fuse together into hard looking hooves. My back cracks and pops as I drop to all fours, unable to stand upright, as my arms grow longer in line with my legs and my head screams in pain as two small horns grow out.

As the exit slides open I slowly stumble outside on all fours, the air blowing owner my naked body feeling strangely nice. Stepping on the ground I look down at my modified body, two swollen large breasts blocking most of my view, as I panic slightly, what has the machine done to me? My mind struggles to think, as if I no longer have the same level of intelligence as I had before, I struggle to think of various concepts and words, my mind instead filling with the desire to eat, be milked and also to be fucked. I try to see my cock as I feel it grow hard beneath me, unable to do anything to relieve myself as my crest continues to grow in pressure, my breasts ballooning to ridiculous proportions, my enlarged nipples barely above the ground, the need for milking growing painful. I try to call out for help but my mind fails to remember how to speak, only a deep moo escaping my lips. Is this permanent? Am I stuck like this? Can someone milk me soon? Why am I so horny? I need help but I also feel humiliated and embarrassed about being found in this state and situation, will people think that I did this on purpose? Desperation, fear and panic take over as my head goes light and I fall onto the straw covered floor and go unconscious.

"What do we do?" My eyes slowly open as I feel the pressure in my breasts and my aching balls, the words of my colleague barely registering, my modified mind struggling to understand the sounds.

"I don't even know if it's possible to undo the modifications from the machine, I can contact the people I brought it from but I doubt they'd be to helpful."

"Should we take him to the hospital?"

"No, definitely not. It would raise to many questions, we'd be shut down or even arrested. No, right now the best thing is probably taking him to the milking barn, he looks like he needs it. We'll figure out a more permanent solution later after he is out of sight." I moo slightly as warm hands gently help me up to all fours and a collar is placed around my neck.

"Come on, let's get you milked." I feel a tug as I'm led away, I obediently follow, understanding the word milked and eagerly follow, hoping to gain some relief.

Entering a barn I am walked passed various cows, all hooked up to milking machines, a strange sense of jealousy fills my mind as my own swollen udders sway painfully beneath me. Reaching a stall I stand still as the rope leash of my collar is secured to a ring and I let out a small moo as two suction tubes are placed over my nipples, each rhythmic suction relieving some of the preasure as the machine milks me. My mind fills with bliss as I'm milked, my mind relieved of one of the three desires and needs that fill it, my hunger and horniness however remains.

"He seems to be enjoying it, he's even getting hard the freak." I continue to moo in both happiness and also horny frustration, as my cock grows, twitching in need as my full balls ache and I raise my ass invitingly, at this point I don't really care how I gain relief, the machine must have increased my arousal levels to that of a cow in heat.

"Well if that's what he wants." I feel hands on my hips and moo loudly as the farm owner's cock enters my ass, I don't care who is fuckung me or who can see, as the barn quickly filling with my happy cries.

Epilogue:

I stand in my milking stall happily chewing on grass, desperately trying to end my insatiable hunger, thankfully the machine seems to have altered my taste buds to make me love it, as I chew I barely notice as I piss myself, my mind not even caring that the farmhands can see me pissing onto the straw covered floor below. As I mindlessly eat I feel a farmhand wash my body with a warm wet cloth, in my forat week here they also shaved me but I guess the changes made it unnecessary, as he wonderfully washes my sweaty body his hand playfully strokes my ever hard cock, causing me to be even more arousal than I normally have. Unfortunately unlike most days this farmhand doesn't end my wash with a fucking, instead leaving me horny and in desperate need of relief as I'm milked. I let out a horny moo as other farmhands walk by ignoring my needy noises, hoping that they'd at least hook my cock up to the milking machine to relieve me.

Life since my accidental transformation has been great, my former boss decided that it was best to keep me on the farm and look after me as any other cow, I'm fed and milked daily and spend most of my time in this barn, only leaving it in the summer to graze in the field. That did mean that I had to be tagged and branded, I vaguely remember my ear stinging as it was pierced, the tag still hanging from it today, and the burning smell and pain as his mark was burnt into my ass cheek, but I weirdly find them comforting in my helpless state, I'm clearly owned property, no one will take me away from here, away from my home.

I surprisingly don't get bored, my mind content with being being milked and fed and of course fucked regularly by the farmhands, my mind struggles to think of anything else it could want or desire, those three needs constantly overiding any others until I fall asleep from exhaustion when the lights go out. Life here is great, I'm given everything that I could possibly ask for and I'm well looked after, I occasionally get flashes of my past life but I barely understand what I'm remembering, the concepts to much for my mind to comprehend and I forget it quickly as my need to eat, be milked or be fucked consumes my thoughts, my mind never allowing me time to wonder about more complex ideas.

Hearing a sound I turn my head to see several bulls being led into the barn, my cock twitching and straining in anticipation, a smile crossing my face and I raise my branded ass as one is led towards me. This explains why I wasn't used by the staff today, it's breeding day.