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Mare & Youngstock™

Essential nutrients for breeding and growth

13 reviews. 4.6 / 5
Guest - 21/06/2024 20:27
She has been on this since the start of her last trimester and is very nearly due. Huge peace of mind that her and her foal are getting what they need without the extra calories. Very palatable in the feed and she is in fantastic condition for foaling
Guest - 21/06/2024 20:20
All our mares have had high colostrum which sets their foals up for the future.  We have used it for several years and will cut back other things but not this supplement.
Lisa - 26/05/2024 21:02
This is the second lot of Mare and Youngstock that i have bought. Excellent value, my mare loves it and i will carry on feeding it to both mare and foal. Smells lovely
John - 21/02/2024 14:21
Provide all the added nutrients I want for my mares
Maggie - 14/02/2024 15:41
I am using this for my recently acquired a 9 month old pony. It’s actually too early for me to say much as I’ve only had the pony one week, but he enjoys eating this mixed in with his chaff.
Guest - 18/01/2024 16:02
Been using for some years.  Good product especially for mares in foal
Guest - 15/11/2023 19:16
A good product we have no used for several years
Guest - 15/12/2022 16:51
Does exactly what I want it to do.
Trusted Feefo Customer - 14/09/2022 21:31
Good product, shame let down by courier
Trusted Feefo Customer - 11/08/2022 09:25
Not as efficient as previously

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Nutrition Information

Mare & Youngstock™ provides nutrients tailored to the increased requirements of mares in the last three months of pregnancy and throughout lactation, and for youngstock from weaning until they are 18 months old (NRC, 2007). In many cases there are distinct advantages to feeding a nutrient dense supplement rather than traditional stud feeds, the most obvious being helping good doers to maintain a healthy weight during pregnancy, which can help to ensure a healthy birth and avoid excessive joint strain in mares and foals. Mare & Youngstock™ provides 24 essential vitamins and minerals in quantities that meet the recommended NRC (2007) requirements of breeding stock when fed a pasture and forage-based diet. Copper, Zinc and Manganese are included in chelated form to enhance mineral absoprtion and reduce negative interactions with other nutrients. Lysine, the first limiting amino acid, is also supplied to ensure optimum utilisation of the quality protein in Soya meal. The probiotic live yeast, Yea-Sacc®, is also included which is beneficial for young horses who often need support to build up a healthy population of microflora in the hindgut, as well as helping to ensure efficient digestion in mares. Mint and Peppermint powder are added as digestive tract soothers, and also to help stimulate appetite, which is especially useful when mares are near the end of their pregnancy. Rosehips provide joint support and antioxidants that help to neutralise free radicals. 

To read more about chelated minerals click here

To read more about broodmare nutrition click here 


NRC (2007). Nutrient Requirements of Horses, 6th Ed. The National Academies Press, Washington, USA.


Maize meal, Full fat soya meal, Mint, Rosehips, Monocalcium phosphate, Potassium chloride, Sodium chloride, Peppermint powder.


  Additive number per kg
BHT (Butylated hydroxytoluene) E321 0.3 g
Vitamin A (Retinyl acetate) 3a672a 208,232 iu
Vitamin D3 (Cholecalciferol) 3a671 22,906 iu
Vitamin E (all rac-α-tocopheryl acetate) 3a700 6,497 iu
Vitamin K (Menadione sodium bisulphate) 3a710 23 mg
B1 Thiamine (Thiamine hydrochloride) 3a820 191 mg
B2 Riboflavin 3a825i/3a825ii 139 mg
B6 Pyridoxine (Pyridoxine hydrochloride) 3a831 82 mg
B12 (Cyanocobalamin)   2.0 mg
Niacin 3a314 100 mg
Biotin 3a880 100 mg
Pantothenate (Calcium pantothenate) 3a841 138 mg
Folic acid 3a316 70 mg
Choline (Choline chloride) 3a890 750 mg
Trace Elements    
Iodine (Calcium iodate anhydrous) 3b202 28 mg
Selenium (Sodium selenite) 3b801 6.4 mg
Copper (Copper (II) sulphate pentahydrate) 3b405 434 mg
Copper (Copper (II) chelate of glycine hydrate) 3b413 434 mg
Manganese (Manganese (II) oxide)  3b502 1,389 mg
Manganese (Manganese chelate of glycine hydrate) 3b506 1,389 mg
Zinc (Zinc oxide) 3b603 1,389 mg
Zinc (Zinc chelate of glycine hydrate) 3b607 1,389 mg




Amino Acids



L-Lysine (L-Lysine monohydrochloride) 3c322

139 g




Digestibility Enhancers



 Yea-Sacc® live yeast (saccharomyces cerevisiae CBS 493.94) 4a1704 1.7x1010 cfu


Crude protein 19.5%
Crude oils & fats 5.5%
Crude fibre 4.1%
Crude ash 22.1%
Sodium 0.9%
Calcium 4.3%
Phosphorus 2.3%

Feeding Guide 


Amount per day


Pregnancy & Months 4-6 of Lactation

Months 1-3 of Lactation


(Weaning-18 Months)

Up to 250kg

½ scoop

1 scoop

1/3 scoop per 100kg

250kg - 400kg

1 scoop

1 ½ scoops

1/3 scoop per 100kg

400kg - 600kg

1 ½ scoops

2 scoops

1/3 scoop per 100kg

Over 600kg

2 scoops

2 ½ scoops

1/3 scoop per 100kg

1 level (150ml) scoop of Mare & Youngstock™ weighs approximately 86g. 

Aligning to nutritional recommendations that forage should form the greatest portion of the equine diet, and to the common practice of managing broodmares and youngstock at grass, Mare & Youngstock™ has been developed to balance a diet of grass and hay. 

Mare & Youngstock™ should be fed to mares in the last three months of pregnancy and throughout lactation, and to youngstock from weaning to 18 months old. Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable). 

Mare & Youngstock™ is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.