Equid milk production: evaluation of Martina Franca jennies and IHDH mares by Wood’s model application
P. De Palo A , A. Maggiolino A B , P. Centoducati A , G. Calzaretti A , P. Milella A and A. Tateo A
+ Author Affiliations
- Author Affiliations
A Department of Veterinary Medicine, University ‘Aldo Moro’ of Bari, S.P. per Casamassima, Km 3, 70010 Valenzano (BA), Italy.
B Corresponding author. Email: aristide.maggiolino@uniba.it
Animal Production Science 57(10) 2110-2116 https://doi.org/10.1071/AN15551
Submitted: 30 October 2014 Accepted: 27 June 2016 Published: 21 October 2016
Abstract
The present work aims to evaluate milk production aptitude of two equid species: horse and donkey. The trial was conducted on the Italian Heavy Draught breed horse (IHDH) and on the Martina Franca breed donkey. Data were collected from 23 multiparous nursing IHDH mares aged from 6 to 10 years, with an average bodyweight (BW) (mean ± s.d.) of 822.3 ± 61.8 kg and from 28 multiparous nursing donkeys of Martina Franca breed aged from 7 to 12 years, with an average BW (mean ± s.d.) of 389.5 ± 21.2 kg. Milk yield was recorded on 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165 and 180 days in milk (DIM). At each milk yield evaluation day, a milk sample was collected and its composition was analysed. All data were normalised according metabolic weight (MBW) of animals, so to make comparable results of the two considered species. Wood’s lactation model was used to describe milk, fat, protein and lactose yield. Peak lactation was reached on DIM 69 in IHDH horse and on DIM 48 in Martina Franca donkey with a milk production of 10.693 kg/100 kg MBW (R2 = 0.9139) and 5.264 kg/100 kg MBW (R2 = 0.9428), respectively. Persistency index of milk lactation curve was higher in Martina Franca donkey then in IHDH mares (7.0338 vs 6.2672). IHDH mares showed higher fat and protein production. Lactose curves showed a similar trend in both the species although IHDH’s curve was characterised by higher values. Data reported in the present work underline that both breeds considered are characterised by good milk production aptitude. Moreover, high R2 values obtained applying Wood’s model to milk, fat, protein and lactose production, calculated on the metabolic bodyweight basis, are indices of goodness of model fit.
Additional keywords: animal production, horses, milk quality.
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