EFFECT OF WEEPING UDDER ON THE. LEVEL OF SOMATIC CELL COUNTS AND. PRODUCTION TRAITS IN ALPINE AND. SAANEN DAIRY GOATS.
EFFECT OF WEEPING UDDER ON THE LEVEL OF SOMATIC CELL COUNTS AND PRODUCTION TRAITS IN ALPINE AND SAANEN DAIRY GOATS S. BIFFANI*, G. MINOZZI, R. PICCININI, B. CASTIGLIONI, S. GRANDE, P. FRESI, P. CREMONESI, G. PAGNACCO, G. GANDINI & A. STELLA IBBA-CNR, UNIMI, AssoNaPa NMC Milano2018 - the 2018 International Bovine Mastitis Conference
WEEPING UDDER ?
Goat Udder Anatomy (Normal) NMC Milano2018 - the 2018 International Bovine Mastitis Conference
WEEPING UDDER – LIMITED INFOS
France ? YES, no data about Incidence… NMC Milano2018 - the 2018 International Bovine Mastitis Conference
• aprox 10k goats from 750 herds • defect detected NMC Milano2018 - the 2018 International Bovine Mastitis Conference
GOATS & WEEPING UDDER IN ITALY
herds with at least 1 affected goat:
• SAANEN : 1 out of 9 (13.8%)
• ALPINE : 1 out of 5 (21.6%) NMC Milano2018 - the 2018 International Bovine Mastitis Conference
GOATS & WEEPING UDDER IN ITALY
• Average Incidence
•SAANEN: 3.6 % •ALPINE: 7.5 % NMC Milano2018 - the 2018 International Bovine Mastitis Conference
WEEPING UDDER IN ITALY • On-going project • CNR + UNIMI + AssoNaPa • Genetic aspects (h2 + GWAS) • Relationship between Udder health & Weeping Teats • Relationship between goat milk microbiota & Weeping Teats NMC Milano2018 - the 2018 International Bovine Mastitis Conference
CURRENT WORK OBJECTIVE
to investigate the effect of «weeping teats» on udder health (SCS) and milk production (kg/d) in Saanen & Alpine goats NMC Milano2018 - the 2018 International Bovine Mastitis Conference
NMC Milano2018 - the 2018 International Bovine Mastitis Conference
MODEL • Very simple Repeatibility Mixed Model by breed & parity
1
Fixed
n
Random
Test-day Herd DIM (10 classes) Year-Season of calving Weeping Teats (Y/N)
Goat
NMC Milano2018 - the 2018 International Bovine Mastitis Conference
MODEL • Very simple Repeatibility Mixed Model by breed & parity
1
Fixed
n
Random
Test-day Herd DIM (10 classes) Year-Season of calving Weeping Teats (Y/N)
Goat
NMC Milano2018 - the 2018 International Bovine Mastitis Conference
RESULTS - INCIDENCE
Primiparous Pluriparous Saanen 3.5 3.9 Alpine 7.5 7.4 NMC Milano2018 - the 2018 International Bovine Mastitis Conference
RESULTS – EFFECT ON MILK
Daily milk loss (kg/day) -0.107 -0.167
Daily milk loss (kg/day) n.s. -0.046
NMC Milano2018 - the 2018 International Bovine Mastitis Conference
RESULTS – EFFECT ON SCS
Daily SCS increase n.s. +0.28
Daily SCS increase +0.26 +0.21
NMC Milano2018 - the 2018 International Bovine Mastitis Conference
CONCLUSIONS
• No data from Literature • No info from Udder Phisiology • Effects on Milk & SCS • Alpine more susceptible (SCS) • in progress • h2 • GWAS NMC Milano2018 - the 2018 International Bovine Mastitis Conference