Post-partum reproductive activity and estrus synchronization responsiveness in anglonubian x sprd fed with dried carnauba wax palm fruit (Copernicia prunifera) long term

Abstract

The present study evaluates the use of dried carnauba wax palm fruit in 28 postpartum goats fed diets containing Bermudagrass hay and either corn (WCWP) or carnauba-based (CWP) concentrated feed. Estrus synchronization was performed 90 days postpartum, and the goats were mated. In the CWP group, compared to the WCWP group, the daily dry matter intake was significantly reduced (646.48 ± 11.03 g vs. 739.29 ± 3.24 g, respectively; P < 0.01). The time to the first functional corpus luteum was similar between the groups, occurring a mean 66 days postpartum. During estrus synchronization, the CWP group had a decreased sternal subcutaneous adipose tissue thickness when compared to the WCWP group (11.93 ± 0.45 mm vs. 13.69 ± 0.57 mm, respectively; P < 0.05) and a lower pregnancy rate (86.67% vs. 46.15%, respectively; P < 0.02). The embryonic vesicle and crown-rump length growth rates, and the biparietal, thoracic, and abdominal diameters at 45 days of pregnancy were within normal range for goats in both groups. Litter size at birth was similar between the groups at a mean 1.39 ± 0.11. In conclusion, the substitution of corn with dehydrated carnauba wax palm fruit in concentrated feed for postpartum goats showed no positive effects. Reduced feed intake in the does consuming the carnauba diet caused decreased body reserves, which probably resulted in a decreased pregnancy rate in the affected does. Key words: Carnauba wax palm, goats, pregnancy rate, progesterone ResumoO presente estudo avaliou o uso do fruto da carnaubeira desidratado em 28 cabras no período pós-parto alimentadas com dieta contendo feno de Tifton e concentrado comercial a base de milho (WCWP) ou com o fruto da carnaubeira (CWP). A sincronização de estro foi realizada aos 90 dias pós-parto e todas as fêmeas foram cobertas. No grupo CWP, em relação ao grupo WCWP, o consumo de matéria seca foi significativamente menor (646,48 ± 11,03 g vs. 739,29 ± 3,24 g, respectivamente; P < 0,01). O tempo para o aparecimento do primeiro corpo lúteo funcional foi semelhante entre os grupos, ocorrendo em média aos 66 dias pós-parto. No momento da sincronização do estro, o grupo CWP apresentou uma menor espessura do tecido adiposo subcutâneo esternal quando comparado ao grupo WCWP (13,69 ± 0,57 mm vs. 11,93 ± 0,45 mm, respectivamente; P < 0,05) e uma menor taxa de gestação (86,67% vs. 46,15%, respectivamente; P < 0.02). A taxa de crescimento da vesícula embrionária e do comprimento crânio-caudal, assim como no diâmetro biparietal, torácico e abdominal aos 45 dias de gestação estavam em ambos os grupos dentro do esperado para a espécie em questão. Ao parto a prolificidade não diferiu entre os grupos, com média de 1,39 ± 0,11. Em conclusão, a substituição total do milho pelo fruto da carnaubeira no concentrado fornecido às fêmeas caprinas no período pós-parto não apresentou efeitos positivos. A redução da ingestão da dieta nas fêmeas alimentadas com carnaúba levou a uma diminuição das reservas corporais, a qual provavelmente foi a principal causa da diminuição na tax...

Physicochemical characteristics and gene expression of meat from does fed with dried carnauba wax palm fruit

“…As described by Silva et al (2015), the carnauba wax palm fruit was harvested prior to maturation, when they were predominantly colored green. The crop was harvested from April to May in Aracati, Ceará, and the fruit was transported to the experimental farm, dried outdoors, and revolved several times a day to ensure uniform dehydration.…”

“…The fruit was used to investigate antioxidant capacity and bioactive components (RUFINO et al, 2010;SILVA et al, 2005) and to verify the quality for fresh consumption and processing (RUFINO et al, 2009). Regarding its use in animal feeding, in addition to the research already cited using carnauba wax, Silva et al (2015) used the whole fruit milled for feeding does in the postpartum period. Recently, Paim et al (2017) used aqueous fruit pulp extract administered in hyperlipidemic mice reduced hypercholesterolemia, showing a potential preventive effect against cardiovascular diseases.…”

Bromatological analysis, phytochemical and antioxidant potential of carnauba (Copernicia prunifera (Mill.) H.E. Moore) fruit

“…Furthermore, the ground and roasted kernel may be used as coffee substitute (Pio Correa, 1931) or yield oil, which can also be used in food (Lorenzi, 1996). Recently, use as animal feed (Silva et al, 2015a). Besides that, carnauba leaves are noted for their elevated content of wax which has many applications in the pharmaceutical industry, food industry, cosmetics, and lubricants (Barman et al, 2011).…”