ROLIM, P. F.; http://lattes.cnpq.br/8221032683816828; ROLIM, Petrúcio Felix.
Resumen:
Efficiency compared two dairy goats genotypes on Paraiba Semiarid. The objective of this study was to evaluate milk production and
reproductive rates depending on the time of calving, genotype and birth order in a
model production system for dairy goat of the semiarid region. The experiment was
conducted in Pending Experimental Station, belonging to EMEPA-PB, in the
municipality of Soledade-PB. Production data were analyzed from 56 goats Anglo
Nubian and crossbred Alpine in three lactation stations. In station 1 23 goats were
analyzed at station 2, station 12 goats and 3, 21. We analyzed the production of milk
of goats above 100 days of lactation to the total output and partial output up to 56
goats were analyzed days of lactation. For reproductive performance reproductive
data of 138 goats were analyzed from Anglo Nubian and crossbred Alpine in six
mating stations. 34 goats were in season 1, 17 goats in season 2, 26 goats in season
3, 24 goats in the season 4, 13 goats in the season 5:24 goats in season 6. In the
analyzes were considered as sources of variation, genotype and time of parturition
(calving season). The sources of variation, when significant, were subjected to the
test medium, using the Tukey. For all statistical analyzes was admitted to the
significance level of 5% probability. Genotype and calving season influenced
(P<0.05) in milk production, as for lactation duration was not observed this behavior.
The order of birth and calving seasons had no effect (P>0.05) on milk production and
duration of lactation. The correlation between the total and partial was positive and
significant (P<0.05). The lambing seasons and genotypes affected the reproductive
efficiency. Both the production performance and reproductive were considered
satisfactory for goat milk production system for the semiarid region.