Suitability of electronic mini-boluses for early identification of lambs12
| Autor: | Marta Hernandez-Jover, C. Flores, F. Bocquier, J. J. Ghirardi, Gerardo Caja, D. Garín |
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| Rok vydání: | 2007 |
| Předmět: |
2. Zero hunger
Veterinary medicine 040301 veterinary sciences Identification device 0402 animal and dairy science 04 agricultural and veterinary sciences General Medicine Biology 040201 dairy & animal science Breed 0403 veterinary science Animal science Genetics Animal Science and Zoology Food Science |
| Zdroj: | Journal of Animal Science. 85:248-257 |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | Three types of ceramic mini-boluses, B1 [13.8 g; 10.5 x 51.0 mm (o.d. x length)], B2 (16.2 g; 12.2 x 42.2 mm), and B3 (20.1 g; 11.2 x 56.4 mm), were used to electronically identify as soon as possible after birth a total of 545 lambs of 3 breeds: Ripollesa (meat breed, n = 274), Manchega (dairy breed, n = 129), and Lacaune (dairy breed, n = 142). Boluses were administered by a trained operator using a balling gun or directly by hand. Lambs were also identified with 2 types of plastic ear tags in the left (temporary, 1.5 g) and the right (permanent, 4.1 g) ears. Lamb and identification device performances were checked during suckling (to wk 5 or 7) and fattening. At 24 kg of BW, lambs were slaughtered (n = 385) or kept for breeding (n = 144). No differences in performance were observed between the 2 dairy breeds, and their data were pooled. Minimum BW for bolus administration was lower in dairy than in meat lambs (P 4 wk; recommended BW, >10 kg), allowing a reliable traceability of dairy and meat lambs until slaughter. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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